Patent Description:
This disclosure generally relates to systems and methods for a power distribution system providing improved usage of three phase power in sound system applications.

<CIT>, <CIT> and <CIT> disclose prior art systems and methods that constitute background to the present invention.

The present invention relates to a method for power distribution and a power distribution system according to the independent claims of the appended claim set. Advantageous embodiments are set forth in dependent claims of the appended claim set.

In one aspect, a power distribution system according to claim <NUM> is provided.

In another aspect, a method for power distribution according to claim <NUM> is provided.

Other features and advantages will be apparent from the description and the claims.

Also, the drawings are not necessarily to scale, emphasis instead generally being placed upon illustrating the principles of the various examples.

The following description is useful for illustrating the invention, which is solely defined in the appended claims.

This disclosure generally relates to systems and methods for a power distribution system providing improved usage of three phase power in sound system applications. Professional touring and stadium performances require significant electrical power. For these applications three-phase power is more economical than two-phase (<NUM> VAC) or single-phase (<NUM> VAC). The three-phase power is most efficient when the loads on the three phases are balanced. Current powered speaker or amplifier distribution networks handle this by applying one load (such as a speaker or amplifier) to each phase. Accordingly, three loads are required to balance the three-phases (one load on each phase). However, due to constraints regarding speaker size and shipping capacity, many speaker systems are configured to be stacked and installed in groups of four. In many cases, four stacks are utilized in a venue, requiring power for sixteen speakers total. These groups of four do not balance well utilizing the method described above, leading to an un-balance of up to <NUM>%.

This un-balance can be significantly reduced using a power distribution block and a wiring pass-through power scheme on each speaker. The power distribution block has a main three-phase power input with a main power breaker rated to sufficiently handle the requirements of the total system. The power distribution block includes a plurality of three-phase power outputs. Each output may be a power breaker rated for that individual stack of four speakers. Each individual speaker may be configured with a three-phase power input and output. Each of the power outputs on the power distribution block and each output on the powered speakers has the phases of the power shifted by <NUM> degrees. Accordingly, the phase shift configuration requires a custom connector to be used to prevent any confusion or mis-wiring of the phases to a different application or load.

In one aspect, and with reference to <FIG>, a power distribution system <NUM> is provided. As described above, the power distribution system <NUM> is configured to more efficiently distribute power to multiple powered speakers. The power distribution system <NUM> may include a first powered audio speaker <NUM>. A portion of the components first powered audio speaker <NUM> are shown in <FIG>. The first powered audio speaker <NUM> may be configured to be stackable. In one example, the first powered audio speaker <NUM> may be configured to stack in groups of four. In a further example, four groups of four speakers (sixteen speakers total) are used. In an even further example, the system <NUM> may include up to six groups of four speakers (twenty-four speakers total). The first powered audio speaker <NUM> may generate sound pressure sufficient to, either individually or in combination with other powered audio speakers, to provide sufficient sound in an arena, stadium, theater, auditorium, performance hall, religious venue, or any other indoor or outdoor setting requiring amplified audio. Other powered audio speakers of the power distribution system <NUM> may be similarly configured as the first <NUM>.

The first powered audio speaker <NUM> may include a first input power port <NUM>. The first input power port <NUM> may be configured to receive a first distributed power signal <NUM>. The first input power port <NUM>, and any other input and/or output ports described herein, may include one or more connectors or adapters suitable to mate with a cable transmitting a power signal. The distributed power signals may be sourced from a power distribution block <NUM>. Alternatively, the distributed power signals may be source directly from a three-phase power system of the venue or by a three-phase generator. The first distributed power signal <NUM> may have a first phase <NUM>.

The first powered audio speaker <NUM> may further include a second input power port <NUM>. The second input power port <NUM> may be configured to receive a second distributed power signal <NUM>. The second distributed power signal <NUM> may have a second phase <NUM>. The second phase <NUM> may be shifted <NUM> degrees from the first phase <NUM>. For example, if the first phase <NUM> is <NUM> degrees, the second phase <NUM> may be <NUM> degrees.

The first powered audio speaker <NUM> may include a third input power port <NUM>. The third input power port <NUM> may be configured to receive a third distributed power signal <NUM>. The third distributed power signal <NUM> may have a third phase <NUM>. The third phase <NUM> may be shifted <NUM> degrees from both the first phase <NUM> and the second phase <NUM>. For example, if the first phase <NUM> is <NUM> degrees, and the second phase <NUM> is <NUM> degrees, the third phase <NUM> may be <NUM> degrees.

The first powered audio speaker <NUM> may include a first output power port <NUM>. As shown in <FIG>, the first output power port <NUM> may be electrically coupled to the third input power port <NUM>. The first output power port <NUM> may be configured to transmit the third distributed power signal <NUM>. This transmission is designated by power signal path L3 in between the first <NUM> and second <NUM> powered audio speakers. L3 corresponds to the signal received by the third input power port <NUM> of the first powered audio speaker <NUM>.

The first powered audio speaker <NUM> may include a second output power port <NUM>. As shown in the <FIG>, the second output power port <NUM> may be electrically coupled to the first input power port <NUM>. The second output power port <NUM> may be configured to transmit the first distributed power signal <NUM>. This transmission is designated by power signal path L1 in between the first <NUM> and second <NUM> powered audio speakers. L1 corresponds to the signal received by the first input power port <NUM> of the first powered audio speaker <NUM>.

The first powered audio speaker <NUM> may include a third output power port <NUM>. As shown in <FIG>, the third output power port <NUM> may be electrically coupled to the second input power port <NUM>. The third output power port <NUM> may be configured to transmit the second distributed power signal <NUM>. This transmission is designated by power signal path L2 in between the first <NUM> and second <NUM> powered audio speakers. L2 corresponds to the signal received by the second input power port <NUM> of the first powered audio speaker <NUM>.

The first powered audio speaker <NUM> may include a first load <NUM>. The first load <NUM> may be electrically coupled to the first input power port <NUM> and the second input power port <NUM>. In this configuration, the first load <NUM> is arranged in a three-phase delta configuration across the first <NUM> and second <NUM> distributed power signals. Alternatively, the first load <NUM>, and other speaker loads described herein, may be arranged in three-phase Wye configuration across one of the distributed power signals and a neutral path. The three-phase Wye configuration of loads is described in more detail below, and is shown in <FIG> and <FIG>. In a typical implementation under United States standards, the delta configuration will provide <NUM> VAC across each load. By contrast, the Wye configuration will provide <NUM> VAC across each load. Further, the delta configuration is simpler than the Wye configuration, as the delta configuration does not require a neutral path. Like the power signals, the neutral path may be similarly distributed to the powered audio speakers of the system <NUM>, but without phase shifting due to safety concerns.

According to an example, the first load <NUM>, or any other load of the system <NUM>, may be an audio transducer. The audio transducers may be configured to convert audio signals received by the load into audible sound pressure. The loads may be any audio transducer practical for use in a speaker system <NUM> used in the environments described above. In other examples, one or more of the loads may be amplifiers. The amplifiers may be configured to increase the amplitude of audio signals received by the speakers.

The power distribution system <NUM> may further include a second powered audio speaker <NUM>. The second powered audio speaker <NUM> may include a first input power port <NUM>. The first input power port <NUM> may be electrically coupled to the first output power port <NUM> of the first powered audio speaker <NUM>. The first input power port <NUM> may be configured to receive the third distributed power signal <NUM>.

The second powered audio speaker <NUM> may include a second input power port <NUM>. The second input power port <NUM> may be electrically coupled to the second output power port <NUM> of the first powered audio speaker <NUM>. The second input power port <NUM> may be configured to receive the first distributed power signal <NUM>.

The second powered audio speaker <NUM> may include a third input power port <NUM>. The third input power port <NUM> may be electrically coupled to the third output power port <NUM> of the first powered audio speaker <NUM>. The third input power port <NUM> may be configured to receive the second distributed power signal <NUM>.

The second powered audio speaker <NUM> may include a second load <NUM>. The second load <NUM> may be electrically coupled to the first input power port <NUM> and the second input power port <NUM>. In this configuration, the second load <NUM> is arranged in a three-phase delta configuration across the third <NUM> and first <NUM> distributed power signals, thus shifting the power supplied to the second load <NUM> relative to the power supplied to the first load <NUM>. As will be described in further detail below, and as can be seen in <FIG> and <FIG>, the system <NUM> will cycle through three shifts of the power supplied to the loads of the speakers.

According to an example, the second powered audio speaker <NUM> may further include a first output power port <NUM>. The first output power port <NUM> may be electrically coupled to the third input power port <NUM>. The first output power port <NUM> may be configured to transmit the second distributed power signal <NUM>. This transmission is designated by power signal path L2 in between the second <NUM> and third <NUM> powered audio speakers. L2 corresponds to the signal received by the second input power port <NUM> of the first powered audio speaker <NUM>.

The second powered audio speaker <NUM> may include a second output power port <NUM>. The second output power port <NUM> may be electrically coupled to the first input power port <NUM>. The second output power port <NUM> may be configured to transmit the third distributed power signal <NUM>. This transmission is designated by power signal path L3 in between the second <NUM> and third <NUM> powered audio speakers. L3 corresponds to the signal received by the third input power port <NUM> of the first powered audio speaker <NUM>.

The second powered audio speaker <NUM> may include a third output power port <NUM>. The third output power port <NUM> may be electrically coupled to the second input power port <NUM>. The third output power port <NUM> may be configured to transmit the first distributed power signal <NUM>. This transmission is designated by power signal path L1 in between the second <NUM> and third <NUM> powered audio speakers. L1 corresponds to the signal received by the first input power port <NUM> of the first powered audio speaker <NUM>.

According to an example, and with reference to <FIG>, the power distribution system <NUM> may include a third powered audio speaker <NUM>. The third powered audio speaker <NUM> may include a first input power port <NUM>. The first input power port <NUM> may be electrically coupled to the first output power port <NUM> of the second powered audio speaker <NUM>. The first input power port <NUM> may be configured to receive the second distributed power signal <NUM>.

The third powered audio speaker <NUM> may include a second input power port <NUM>. The second input power port <NUM> may be electrically coupled to the second output power port <NUM> of the second powered audio speaker <NUM>. The second input power port <NUM> may be configured to receive the third distributed power signal <NUM>.

The third powered audio speaker <NUM> may include a third input power port <NUM>. The third input power port <NUM> may be electrically coupled to the third output power port <NUM> of the second powered audio speaker <NUM>. The third input power port <NUM> may be configured to receive the first distributed power signal <NUM>.

The third powered audio speaker <NUM> may include a third load <NUM>. The third load <NUM> may be electrically coupled to the first input power port <NUM> and the second input power port <NUM>. In this configuration, the third load <NUM> is arranged in a three-phase delta configuration across the second <NUM> and third <NUM> distributed power signals, thus shifting the power supplied to the third load <NUM> relative to the power supplied to the first load <NUM> and the second load <NUM>.

According to an example, the third powered audio speaker <NUM> may include a first output power port <NUM>. The first output power port <NUM> may be electrically coupled to the third input power port <NUM>. The first output power port <NUM> may be configured to transmit the first distributed power signal <NUM>. This transmission is designated by power signal path L1 in between the third <NUM> and fourth <NUM> powered audio speakers. L1 corresponds to the signal received by the first input power port <NUM> of the first powered audio speaker <NUM>.

The third powered audio speaker <NUM> may include a second output power port <NUM>. The second output power port <NUM> may be electrically coupled to the first input power port <NUM>. The second output power port <NUM> may be configured to transmit the second distributed power signal <NUM>. This transmission is designated by power signal path L2 in between the third <NUM> and fourth <NUM> powered audio speakers. L2 corresponds to the signal received by the second input power port <NUM> of the first powered audio speaker <NUM>.

The third powered audio speaker <NUM> may include a third output power port <NUM>. The third output power port <NUM> may be electrically coupled to the second input power port <NUM>. The third output power port <NUM> may be configured to transmit the third distributed power signal <NUM>. This transmission is designated by power signal path L3 in between the third <NUM> and fourth <NUM> powered audio speakers. L3 corresponds to the signal received by the third input power port <NUM> of the first powered audio speaker <NUM>.

According to an example, and with reference to <FIG>, the power distribution system <NUM> may include a fourth powered audio speaker <NUM>. The fourth powered audio speaker <NUM> may include a first input power port <NUM>. The first input power port <NUM> may be electrically coupled to the first output power port <NUM> of the third powered audio speaker <NUM>. The first input power port <NUM> may be configured to receive the first distributed power signal <NUM>.

The fourth powered audio speaker <NUM> may include a second input power port <NUM>. The second input power port <NUM> may be electrically coupled to the second output power port <NUM> of the third powered audio speaker <NUM>. The second input power port <NUM> may be configured to receive the second distributed power signal <NUM>.

The fourth powered audio speaker <NUM> may include a third input power port <NUM>. The third input power port <NUM> may be electrically coupled to the third output power port <NUM> of the third powered audio speaker <NUM>. The third input power port <NUM> may be configured to receive the third distributed power signal <NUM>.

The fourth powered audio speaker <NUM> may include a fourth load <NUM>. The fourth load <NUM> may be electrically coupled to the first input power port <NUM> and the second input power port <NUM>. In this configuration, the fourth load <NUM>, like the first load <NUM> of the first powered audio speaker <NUM>, is arranged in a three-phase delta configuration across the first <NUM> and second <NUM> distributed power signals. This demonstrates that the first <NUM> and fourth <NUM> powered audio speakers will receive and transmit the power signals <NUM>, <NUM>, <NUM> in the same arrangement due to the cyclical nature of the power shifting scheme.

In a further example, the loads <NUM>, <NUM>, <NUM>, <NUM>, may each be coupled to the second and third input power ports of their respective powered speakers to achieve phase shifting.

Further configuration of the inputs and outputs of the powered audio speakers may be possible to achieve phase shifting. For example, the first input power port may be coupled to the third output power port, the second input power port may be coupled to the first output power port, and the third input power port may be coupled to the second output power port.

According to an example, and with reference to <FIG>, the first powered audio speaker <NUM> may include an input audio port <NUM>. The input audio port <NUM> may be configured to receive an audio signal <NUM>. The first load <NUM> may transduce the audio <NUM> into audible sound pressure. The first load <NUM> may be configured to amplify the amplitude of the audio signal <NUM>. The audio signal <NUM> may be provided by the power distribution block <NUM>. The audio signal <NUM> may be digital or analog. The first powered audio speaker <NUM> may further include an output audio port <NUM>. The output audio port <NUM> may be configured to transmit the audio signal <NUM>. The audio signals and input and/or output audio ports recited herein may conform with the Audio Engineering Society/European Broadcasting Union (AES/EBU) standards. For example, the input and/or output audio ports may include XLR or BNC connectors.

According to an example, the second powered audio speaker <NUM> may include an input audio port <NUM>. The input audio port <NUM> may be coupled to the output audio port <NUM> of the first powered audio speaker <NUM>. The input audio port <NUM> may be configured to receive the audio signal <NUM>. The second powered audio speaker <NUM> may include an output audio port <NUM>. The output audio port <NUM> may be configured to transmit the audio signal <NUM>.

According to an example, the third powered audio speaker <NUM> may include an input audio port <NUM>. The input audio port <NUM> may be coupled to the output audio port <NUM> of the second powered audio speaker <NUM>. The input audio port <NUM> may be configured to receive the audio signal <NUM>. The third powered audio speaker <NUM> may include an output audio port <NUM> configured to transmit the audio signal <NUM>.

According to an example, the fourth powered audio speaker <NUM> may include an input audio port <NUM>. The input audio port <NUM> may be coupled to the output audio port <NUM> of the third powered audio speaker <NUM>. The input audio port <NUM> may be configured to receive the audio signal <NUM>. The audio signal <NUM> may be provided to additional powered audio speakers in a similar manner. Further, and as shown in <FIG>, a control signal may be distributed to the powered audio speakers in a similar manner as the audio signal. In an even further example, the audio signal <NUM> may include networked audio compatible with a DANTE, MILAN, or AVB system.

According to an example, and with respect to <FIG>, the first powered audio speaker <NUM> may include an input ground port <NUM>. The input ground port <NUM> may be configured to receive a ground signal <NUM>. The ground signal <NUM> may be provided by the power distribution block <NUM>. The first powered audio speaker <NUM> may further comprise an output ground port <NUM> configured to transmit the ground signal <NUM>.

According to an example, the second powered audio speaker <NUM> may include an input ground port <NUM>. The input ground port <NUM> may be coupled to the output ground port <NUM> of the first powered audio speaker <NUM>. The input ground port <NUM> may be configured to receive the ground signal <NUM>. The second powered audio speaker <NUM> may include an output ground port <NUM>. The output ground port <NUM> may be configured to transmit the ground signal <NUM>.

According to an example, and with reference to <FIG>, the power distribution system <NUM> may include a power distribution block <NUM>. The power distribution block <NUM> may be configured to connect to the main three-phase power of the venue or generator, and distribute the power to individual stacks of speakers. The power distribution block <NUM> may be configured to produce the first <NUM>, second <NUM>, and third <NUM> distributed power signals.

The power distribution block <NUM> may include a first main input power port <NUM>. The first main input power port <NUM> may be configured to receive a first main power signal <NUM>. The first main power signal <NUM> may have a first phase <NUM>.

The power distribution block <NUM> may include a second main input power port <NUM>. The second main input power port <NUM> may be configured to receive a second main power signal <NUM>. The second main power signal <NUM> may have a second phase <NUM>. The second phase <NUM> may be shifted <NUM> degrees from the first phase <NUM>. For example, if the first phase <NUM> is <NUM> degrees, the second phase <NUM> may be <NUM> degrees.

The power distribution block <NUM> may include a third main input power port <NUM>. The third main input power port <NUM> may be configured to receive a third main power signal <NUM>. The third main power signal <NUM> may have a third phase <NUM>. The third phase <NUM> may be shifted <NUM> degrees from both the first phase <NUM> and the second phase <NUM>. For example, if the first phase <NUM> is <NUM> degrees, and the second phase <NUM> is <NUM> degrees, the third phase <NUM> may be <NUM> degrees.

The power distribution block <NUM> may include a first distributed output power port <NUM>. As shown in <FIG>, the first distributed output power port <NUM> may be electrically coupled to the first main input power port <NUM>. The first distributed output power port <NUM> may be configured to transmit the first distributed power signal <NUM> to the first input power port <NUM> of the first powered audio speaker <NUM>.

The power distribution block <NUM> may include a second distributed output power port <NUM>. As shown in <FIG>, the second distributed output power port <NUM> may be electrically coupled to the second main input power port <NUM>. The second distributed output power port <NUM> may be configured to transmit the second distributed power signal <NUM> to the second input power port <NUM> of the first powered audio speaker <NUM>.

The power distribution block <NUM> may include a third distributed output power port <NUM>. As shown in <FIG>, the third distributed output power port <NUM> may be electrically coupled to the third main input power port <NUM>. The third distributed output power port <NUM> may be configured to transmit the third distributed power signal <NUM> to the third input power port <NUM> of the first powered audio speaker <NUM>.

According to an example, the power distribution block <NUM> may include a fourth distributed output power port <NUM>. As shown in <FIG>, the fourth distributed output power port <NUM> may be electrically coupled to the third main input power port <NUM>. The fourth distributed output power port <NUM> may be configured to transmit the third distributed power signal <NUM> to a first input power port <NUM> of a fifth powered audio speaker <NUM>.

The power distribution block <NUM> may further include a fifth distributed output power port <NUM>. The fifth distributed output power port <NUM> may be electrically coupled to the first main input power port <NUM>. The fifth distributed output power port may be configured to transmit the first <NUM> distributed power signal to a second input power port <NUM> of the fifth powered audio speaker <NUM>.

The power distribution block <NUM> may further include a sixth distributed output power port <NUM>. The sixth distributed output power port <NUM> may be electrically coupled to the second main input power port <NUM>. The sixth distributed output power port <NUM> may be configured to transmit the second distributed power signal <NUM> to a third input power port <NUM> of the fifth powered audio speaker <NUM>. Accordingly, each successive output grouping of the power distribution block <NUM> is phase shifted from the previous grouping in a manner analogous to the speakers.

According to an example, and as shown in <FIG>, the power distribution block <NUM> may include a main power circuit breaker <NUM>. The main power circuit breaker <NUM> may be electrically coupled to at least one of the first <NUM>, second <NUM>, or third <NUM> main input power ports. The main power circuit breaker <NUM> may be arranged to prevent damage to the block <NUM> and downstream devices, such as speakers, in the event of a power surge. The main power circuit breaker <NUM> may be rated for <NUM> A.

According to an example, and as shown in <FIG>, the power distribution block <NUM> may include a distributed power circuit breaker <NUM>. The distributed power circuit breaker <NUM> may be electrically coupled to at least one of the first <NUM>, second <NUM>, or third <NUM> distributed output power ports. The distributed power circuit breaker <NUM> may be arranged to prevent damage to the downstream devices, such as speakers, in the event of a power surge. The distributed power circuit breaker <NUM> may be rated for <NUM> A. Additional distributed power circuit breakers <NUM> may be implemented throughout the block <NUM>.

According to an example, a main signal current of the first <NUM>, second <NUM>, and third <NUM> main power signals may be greater than a distributed signal current of the first <NUM>, second <NUM>, or third <NUM> distributed power signals. This relationship may be dictated by the number of distributed power output ports connected to speakers. This relationship may further be reflected by the difference in current ratings of the main power circuit breaker <NUM>, such as <NUM> A, and the distributed power circuit breaker <NUM>, such as <NUM> A.

In another aspect, and with references to <FIG> and <FIG>, a power distribution system <NUM> is provided. This power distribution system <NUM> may be configured to supply loads in a Wye configuration. The power distribution system <NUM> may include a first powered audio speaker <NUM>. The first powered audio speaker <NUM> may include a first input power port <NUM>. The first input power port <NUM> may be configured to receive a first distributed power signal <NUM>. The first distributed power <NUM> signal has a first phase <NUM>.

The first powered audio speaker <NUM> may include a second input power port <NUM>. The second input power port <NUM> may be configured to receive a second distributed power signal <NUM>. The second distributed power signal <NUM> may have a second phase <NUM>. The second phase <NUM> may be shifted <NUM> degrees from the first phase <NUM>.

The first powered audio speaker <NUM> may include a third input power port <NUM>. The third input power port <NUM> may be configured to receive a third distributed power signal <NUM>. The third distributed power signal <NUM> may have a third phase <NUM>. The third phase <NUM> may be shifted <NUM> degrees from both the first phase <NUM> and the second phase <NUM>.

The first powered audio speaker <NUM> may include an input neutral port <NUM>. The input neutral port <NUM> may be configured to receive a neutral signal <NUM>.

The first powered audio speaker <NUM> may include a first output power port <NUM>. The first output power port <NUM> may be electrically coupled to the third input power port <NUM>. The first output power port <NUM> may be configured to transmit the third distributed power signal <NUM>.

The first powered audio speaker <NUM> may include a second output power port <NUM>. The second output power port <NUM> may be electrically coupled to the first input power port <NUM>. The second output power port <NUM> may be configured to transmit the first distributed power signal <NUM>.

The first powered audio speaker <NUM> may include a third output power port <NUM>. The third output power port <NUM> may be electrically coupled to the second input power port <NUM>. The third output power port <NUM> may be configured to transmit the second distributed power signal <NUM>.

The first powered audio speaker <NUM> may include an output neutral port <NUM>. The output neutral port <NUM> may be configured to transmit the neutral signal <NUM>.

The first powered audio speaker <NUM> may include a first load <NUM>. The first load <NUM> may be electrically coupled to the first input power port <NUM> and the input neutral port <NUM>. In one example, the first load <NUM>, or any other load in the system <NUM>, may be an audio transducer. In another example, the first load <NUM>, or any other load in the system <NUM>, may include one or more amplifiers. <FIG> shows the first load <NUM> as two amplifiers, AMP1 and AMP2.

The power distribution system <NUM> may include a second powered audio speaker <NUM>. The second powered audio speaker <NUM> may include a first input power port <NUM>. The first input power port <NUM> may be electrically coupled to the first output power port <NUM> of the first powered audio speaker <NUM>. The first input power port <NUM> may be configured to receive the third distributed power signal <NUM>.

The second powered audio speaker <NUM> may include an input neutral port <NUM>. The input neutral port <NUM> may be electrically coupled to the output neutral port <NUM> of the first powered audio speaker <NUM>. The input neutral port <NUM> may be configured to receive the neutral signal <NUM>.

The second powered audio speaker <NUM> may include a second load <NUM>. The second load <NUM> may be electrically coupled to the first input power port <NUM> and the input neutral port <NUM>. As shown in <FIG>, the second load <NUM> may include two amplifiers, AMP1 and AMP2. As will be described in further detail below, and as can be seen in <FIG> and <FIG>, the system <NUM> will cycle through three shifts of the power supplied to the loads of the speakers.

The second powered audio speaker <NUM> may include a first output power port <NUM>. The first output power port <NUM> may be electrically coupled to the third input power port <NUM>. The first output power port <NUM> may be configured to transmit the second distributed power signal <NUM>.

The second powered audio speaker <NUM> may include a second output power port <NUM>. The second output power port <NUM> may be electrically coupled to the first input power port <NUM>. The second output power port <NUM> may be configured to transmit the third distributed power signal <NUM>.

The second powered audio speaker <NUM> may include a third output power port <NUM>. The third output power port <NUM> may be electrically coupled to the second input power port <NUM>. The third output power port <NUM> may be configured to transmit the first distributed power signal <NUM>.

The second powered audio speaker <NUM> may include an output neutral port <NUM> configured to transmit the neutral signal <NUM>.

According to an example, the power distribution system <NUM> may further include a third powered audio speaker <NUM>. The third powered audio speaker <NUM> may include a first input power port <NUM>. The first input power port <NUM> may be electrically coupled to the first output power port <NUM> of the second powered audio speaker <NUM>. The first input power port <NUM> may be configured to receive the second distributed power signal <NUM>.

The third powered audio speaker <NUM> may include an input neutral port <NUM>. The input neutral port <NUM> may be electrically coupled to the output neutral port <NUM> of the second powered audio speaker <NUM>. The input neutral port <NUM> may be configured to receive the neutral signal <NUM>.

The third powered audio speaker <NUM> may include a third load <NUM>. The third load <NUM> may be electrically coupled to the first input power port <NUM> and the input neutral port <NUM>. As shown in <FIG>, the third load <NUM> may include two amplifiers, AMP1 and AMP2.

The third powered audio speaker <NUM> may include a first output power port <NUM>. The first output power port <NUM> may be electrically coupled to the third input power port <NUM>. The first output power <NUM> port may be configured to transmit the first distributed power signal <NUM>.

The third powered audio speaker <NUM> may include a second output power port <NUM>. The second output power port <NUM> may be electrically coupled to the first input power port <NUM>. The second output power port <NUM> may be configured to transmit the second distributed power signal <NUM>.

The third powered audio speaker <NUM> may include a third output power port <NUM>. The third output power port <NUM> may be electrically coupled to the second input power port <NUM>. The third output power port <NUM> may be configured to transmit the third distributed power signal <NUM>.

The third powered audio speaker <NUM> may include an output neutral port <NUM>. The output neutral port <NUM> may be configured to transmit the neutral signal <NUM>.

According to an example, the power distribution system <NUM> may further include a fourth powered audio speaker <NUM>. The fourth powered audio speaker <NUM> may include a first input power port <NUM>. The first input power <NUM> port may be electrically coupled to the first output power port <NUM> of the third powered audio speaker <NUM>. The first input power port <NUM> may be configured to receive the first distributed power signal <NUM>.

The fourth powered audio speaker <NUM> may include an input neutral port <NUM>. The input neutral port <NUM> may be electrically coupled to the output neutral port <NUM> of the third powered audio speaker <NUM>. The input neutral port <NUM> may be configured to receive the neutral signal <NUM>.

The fourth powered audio speaker <NUM> may include a fourth load <NUM>. The fourth load <NUM> may be electrically coupled to the first input power port <NUM> and the input neutral port <NUM>. As shown in <FIG>, the fourth load <NUM> may include two amplifiers, AMP1 and AMP2.

In another aspect, and with reference to <FIG>, a method <NUM> for power distribution is provided. The method <NUM> may include receiving <NUM>, by a first input power port of a first powered audio speaker, a first distributed power signal. The first distributed power signal may have a first phase. The method <NUM> may include receiving <NUM>, by a second input power port of the first powered audio speaker, a second distributed power signal. The second distributed power signal may have a second phase shifted <NUM> degrees from the first phase. The method <NUM> may further include receiving <NUM>, by a third input power port of the first powered audio speaker, a third distributed power signal. The third distributed power signal may have a third phase shifted <NUM> degrees from both the first phase and the second phase.

The method <NUM> may further include transmitting <NUM>, by a first output power port of the first powered audio speaker, the third distributed power signal. The method <NUM> may further include transmitting <NUM>, by a second output power of the first powered audio speaker, the first distributed power signal. The method <NUM> may further include transmitting <NUM>, by a third output power port of the first powered audio speaker, the second distributed power signal. A first load may be coupled to the first and second input power ports of the first powered audio speaker.

The method <NUM> may further include receiving <NUM>, by a first input power port of the second powered audio speaker, the third distributed power signal. The method <NUM> may further include receiving <NUM>, by a second input power port of the second powered audio speaker, the first distributed power signal. The method <NUM> may further include receiving <NUM>, by a third input power port of the second powered audio speaker, the second distributed power signal. A second load may be coupled to the first and second input power ports of the first powered audio speaker.

According to an example, the method <NUM> may further include transmitting <NUM>, by a first output power port of the second powered audio speaker, the second distributed power signal. The method <NUM> may further include transmitting <NUM>, by a second output power of the second powered audio speaker, the third distributed power signal. The method <NUM> may further include transmitting <NUM>, by a third output power port of the second powered audio speaker, the first distributed power signal.

The method <NUM> may further include receiving <NUM>, by a first input power port of a third powered audio speaker, the second distributed power signal. The method <NUM> may further include receiving <NUM>, by a second input power port of the third powered audio speaker, the third distributed power signal. The method <NUM> may further include receiving <NUM>, by a third input power port of the third powered audio speaker, the first distributed power signal. A third load may be coupled to the first and second input power ports of the third powered audio speaker.

According to an example, the method <NUM> may further include receiving <NUM>, by a first main input power port of a power distribution block a first main power signal. The first main power signal may have a first phase. The method <NUM> may further include receiving <NUM>, by a second main input power port of the power distribution block, a second main power signal. The second main power signal may have a second phase shifted <NUM> degrees from the first phase. The method <NUM> may further include receiving <NUM>, by a third main input power port of the power distribution block, a third distributed power signal. The third distributed power signal may have a third phase shifted <NUM> degrees from both the first phase and the second phase.

The method <NUM> may further include transmitting <NUM>, by a first distributed output power port of the power distribution block, the first distributed power signal to the first input power port of the first powered audio speaker. The method <NUM> may further include transmitting <NUM>, by a second distributed output power port of the power distribution block, the second distributed power signal to the first input power port of the first powered audio speaker. The method <NUM> may further include transmitting <NUM>, by a third distributed output power port of the power distribution block, the third distributed power signal to the third input power port of the first powered audio speaker. The method <NUM> may further include transmitting <NUM>, by a fourth distributed output power port of the power distribution block, the third distributed power signal to the first input power port of a fourth powered audio speaker. The method <NUM> may further include transmitting <NUM>, by a fifth distributed output power port of the power distribution block, the first distributed power signal to the first input power port of a fourth powered audio speaker. The method <NUM> may further include transmitting <NUM>, by a sixth distributed output power port of the power distribution block, the second distributed power signal to the third input power port of a fourth powered audio speaker.

The above-described examples of the described subject matter can be implemented in any of numerous ways. For example, some aspects may be implemented using hardware, software or a combination thereof. When any aspect is implemented at least in part in software, the software code can be executed on any suitable processor or collection of processors, whether provided in a single device or computer or distributed among multiple devices/computers.

The present disclosure may be implemented as a system, a method, and/or a computer program product at any possible technical detail level of integration.

Computer readable program instructions for carrying out operations of the present disclosure may be assembler instructions, instruction-set-architecture (ISA) instructions, machine instructions, machine dependent instructions, microcode, firmware instructions, state-setting data, configuration data for integrated circuitry, or either source code or object code written in any combination of one or more programming languages, including an object oriented programming language such as Smalltalk, C++, or the like, and procedural programming languages, such as the "C" programming language or similar programming languages. In some examples, electronic circuitry including, for example, programmable logic circuitry, field-programmable gate arrays (FPGA), or programmable logic arrays (PLA) may execute the computer readable program instructions by utilizing state information of the computer readable program instructions to personalize the electronic circuitry, in order to perform aspects of the present disclosure.

Aspects of the present disclosure are described herein with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to examples of the disclosure.

The computer readable program instructions may be provided to a processor of a, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions/acts specified in the flowchart and/or block diagram block or blocks. These computer readable program instructions may also be stored in a computer readable storage medium that can direct a computer, a programmable data processing apparatus, and/or other devices to function in a particular manner, such that the computer readable storage medium having instructions stored therein comprises an article of manufacture including instructions which implement aspects of the function/act specified in the flowchart and/or block diagram or blocks.

The flowchart and block diagrams in the Figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various examples of the present disclosure.

Claim 1:
A method (<NUM>) for power distribution, comprising:
receiving (<NUM>), by a first input power port (<NUM>) of a first powered audio speaker (<NUM>), a first distributed power signal (<NUM>), wherein the first distributed power signal has a first phase;
receiving (<NUM>), by a second input power port (<NUM>) of the first powered audio speaker, a second distributed power signal (<NUM>), wherein the second distributed power signal has a second phase shifted <NUM> degrees from the first phase;
receiving (<NUM>), by a third input power port (<NUM>) of the first powered audio speaker, a third distributed power signal (<NUM>), wherein the third distributed power signal has a third phase shifted <NUM> degrees from both the first phase and the second phase;
transmitting (<NUM>), by a first output power port (<NUM>) of the first powered audio speaker, the third distributed power signal;
transmitting (<NUM>), by a second output power port (<NUM>) of the first powered audio speaker, the first distributed power signal;
transmitting (<NUM>), by a third output power port (<NUM>) of the first powered audio speaker, the second distributed power signal, wherein a first load (<NUM>) is coupled to the first and second input power ports of the first powered audio speaker;
receiving (<NUM>), by a first input power port (<NUM>) of a second powered audio speaker (<NUM>), the third distributed power signal transmitted by the first output power port of the first powered audio speaker;
receiving (<NUM>), by a second input power port (<NUM>) of the second powered audio speaker, the first distributed power signal transmitted by the second output power port of the first powered audio speaker; and
receiving (<NUM>), by a third input power port (<NUM>) of the second powered audio speaker, the second distributed power signal transmitted by the third output power port of the first powered audio speaker, wherein a second load (<NUM>) is coupled to the first and second input power ports of the second powered audio speaker.