KNOWLEDGE BASE ARTICLE
CTX 3030 Audio Options

The CTX 3030 has a number of audio options to hear target signals. This knowledge base article provides
more detail about these options and the technology used.
WM 10 Wireless Module*
Choose from three wireless audio options:•Choose from three wireless audio options:•

Use the built-in speaker on the WM 10•

Connect the supplied headphones to the ¼-inch socketon the WM 10 (100 ohm)•

Connect your own favourite headphones to the ¼-inchsocket on the WM 10CTX 3030 Detector Audio
Choose from four wired audio options:•Use the built-in speaker on the detector•Connect the supplied headphones to the ¼-inch
socket on the Headphone Module (100 ohm)

•Connect your own favourite headphones to the¼-inch socket on the Headphone Module•

Connect the waterproof headphones to thewaterproof socket after removing the nonwaterproof Headphone Module

1/4-inch Headphone Module
The 1/4-inch Headphone Module attaches to the CTX 3030 control box.
The Headphone Module connects the 1/4-inch headphone socket tothe waterproof connector. There are no electronics in the Headphone
Module.
The 1/4-inch socket is compatible with standard stereo or mono
headphones. The wiring diagrams on the next page illustrate how
headphones must be wired to operate correctly with the Headphone
Module (to mute the internal speaker).

1/4-inch Headphone Module

The headphone module is not waterproof and should be removed if detecting in water.
When detecting in water, waterproof headphones with a special connector must be used.

KNOWLEDGE BASE ARTICLE | KBA 21-3

Page 1CTX 3030 1/4-inch Headphone Module Socket Wiring
Ring - audio (-)
Tip - audio (+)

Sleeve - headphone sense

Correct Headphone Wiring

Incorrect Headphone Wiring

Headphones will be sensed and the internal speaker
will be turned off

Headphones will not be sensed and the internal speaker
will not be turned off

Ring

SleeveRing

SleeveRing

Sleeve

Tip

Tip

Ring

SleeveTip

Tip

Compatible headphone wiring is required to allow the CTX 3030 electronics detect the presence of the headphones and automaticallymute the internal speaker. Therefore, headphones that do not have compatible wiring will not be detected by the CTX 3030 electronics.
This may result in either the speaker not muting and/or the volume in the headphones being low.
If this problem is encountered with a third party accessory set of headphones a 1/4-inch mono to stereo adaptor will allow theheadphones to work with the Headphone Module. This is because the mono socket will connect the ‘ring’ to the ‘sleeve’.

1/4-inch mono to stereo adaptor

The following wiring diagrams show how headphones with a mono plug should be wired for both parallel and series configurations. Monoplugs work because the ‘ring’ and ‘sleeve’ are connected and allow the detector’s electronics to detect the presence of the plug.

SleeveSleeveTip

Tip

Correct mono plug wiring - speakers in parallel

Correct mono plug wiring - speakers in series

The CTX 3030 wired headphone output will work with headphones that have an impedance of 16 to 600 ohms.

KNOWLEDGE BASE ARTICLE | KBA 21-3

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Waterproof Headphones Connector
The waterproof headphones connector is an eight-pin socket at the back of
the CTX 3030 control box. It is used to provide audio signals to the waterproof
headphones and the Headphone Module.
If the CTX 3030 is being used without the Headphone Module connected,
use the protective cap that is stored in the rear of the Headphone Module toprotect the waterproof socket from dirt and sand.
Protectiveconnector cap

This cap should always be attached to the waterproof connector when thedetector is submerged. Although the connector is waterproof, attaching
the protective cap is recommended, as it will help to prevent unnecessary
corrosion of the connector after exposure to salt-water. Rinsing your detector
with clean freshwater after the detector has been submerged is also
recommended.

Waterproof Connector Pinouts

Pin 2 - audio (+) - tip

Pin 3 - audio (–) - ringPin 4 - headphone sense - sleeve

WM 10 Wireless Audio Module
The WM 10 Wireless Audio Module allows a user to be free of cables that
normally tether them to the detector.
There are two audio options with the Wireless Module; use the internal
speaker or the 1/4-inch headphone socket.
The headphone socket on the WM 10 will work with either the supplied Koss
headphones or third party headphones. Note that the headphone socket uses
an internal mechanical switch, rather than electronically sensing headphones,
so the Wireless Module is compatible with a wider range of third party
headphones than the Headphone Module.
There are 14 frequency channels available to select from within the detector.
Change channels if there is interference, or if you are detecting near someone
else using a WM 10. Ensure that you are each using a different channel.
The WM 10 is powered by an internal Li-ion battery and is recharged via amini USB connector.
The WM 10 wired headphone output will work with headphones that have an
impedance of 16 to 600 ohms.

KNOWLEDGE BASE ARTICLE | KBA 21-3

WM 10 Wireless Audio Module

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Wi-Stream Technology
Wi-Stream wireless technology is used to communicate between a Wi-Stream compatible detector and a Wireless Audio Module.
The technology was developed originally for the CTX 3030, to provide no perceivable delay (less than 10 ms). This is important for
detector users as lags in the audio response make it difficult to locate and pinpoint targets.
Wi-Stream does not transmit audio data, like other technologies (e.g. Bluetooth). Instead packets of data are sent to the Wireless
Module and then converted to an audio signal within the Module. This increases the speed of signals and greatly reduces the effectsof electrical noise.

Wi-Stream Compatability
Wi-Stream technology is featured in a number of Minelab detectors. Note that the CTX 3030 is only compatible with the WM 10. The WM
10 cannot be used with other detectors, and will only connect to a CTX 3030.

Wi-Stream Specifications (CTX 3030)
Frequency

2.4 GHz ISM band (same band as Bluetooth)Power<2 mW - transmit from both detector control panel and WM 10Channels

14Connection typePoint-to-point - only one WM 10 can be paired with thedetector at a time

Wireless compliancestandards

ETSI EN 300 440-1: V1.6.1 (2010-08) ElectromagneticCompatibility with Radio Spectrum Matters and ETSI EN 300
440-2: V1.3.1 (2008-11) Electromagnetic Compatibility with Radio
Spectrum Matters

KNOWLEDGE BASE ARTICLE | KBA 21-3

Wi-Stream signals (likeBluetooth) cannot passthrough water.
Use waterproof headphones to produce
audio when submerging the detector.
Note: submerging just the coil will notaffect Wi-Stream audio.

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