Hi Willie:
We do not recommend split the speaker wire coming out of the master speaker. One channel is directed to the internal speaker (right channel) and the output is connected to the Left channel. And you know two lefts don't make it right. The system would become unbalanced and would put a strain on the internal amplifier. It needs to be an 8-ohm load so it cannot be expanded. You should check out the BOM 4.1 which was created to solve the problem that two stereo speakers will not provide enough coverage. And unless you have a high-end smartphone where you can connect to two Bluetooth Receivers at once. The BOM4.1 not only feature the connection between two pairs of speakers but you can mix two different pairs or styles. You might pick out a pair of the AP525 and pair it with an RS670 pair of rock speakers. Add to that you have 100 watts 8" subwoofer complimenting the system.
TL/4978