The article showed a compatibility issue when it comes to using different wired stereo headsets with different communications devices, whether they be computers, smartphones or games controllers.
How are the headsets wired?
There are two ways of wiring a stereo headset’s plug where both of them use a 4-conductor 3.5mm phone plug. The tip and first ring in both wirings are for the stereo sound to the headset speakers but how the second ring and the sleeve are wired differ between the wirings.
The CTIA wiring that Apple, Samsung and Sony uses for their phones and a great majority of headsets implement wires the second ring as the common or ground and the sleeve for the microphone. Conversely the OMTP wiring that Microsoft uses for their XBox One controllers and manufacturers like Nokia and a few Android handset builders has the second ring used for the microphone and the sleeve for the common or ground.
This problem can cause headsets that observe one of these wirings not to work properly with phones or other devices that observe the other wiring, such as with excessive noise or the microphone not working.
There are some ways to work around the problem. Firstly, you could purchase an OMTP / CTIA headset adaptor which is a plug-in jack adaptor that reverses the wiring so that an OMTP headset can be compatible with a CTIA device and vice versa. This can extend to having the headset’s plug wiring modified by a knowledgeable electronics technician to suit your device, something that could be done for “beer money”. If you have headphones that come with a headset cable, you could purchase another headset cable and have that modified to work with another device.
When I review headsets, I have raised this issue when it comes to headset connectivity and have suggested that headset manufacturers either supply a CTIA/OMTP adaptor plug or integrate a changeover switch for the affected connections into their headset or microphone pod designs. Similarly, device manufacturers could design their devices to work with both CTIA and OMTP headset wirings, something that can be facilitated at software level such as through a setup-menu option or auto-detect routine; or on a hardware level through a changeover switch on the device. The recent Lumia Windows smartphones have answered this problem by implementing a “universal headset jack” design.
There were other compatibility issues raised between headsets targeted at Apple devices and headsets targeted for other devices even if they were wired to CTIA specifications. This came in the form of the microphone’s impedance or how the buttons on the microphone pod send control signals to the host device. But most of the other device manufacturers are answering this problem through the use of microphone-input circuitry that adjusts itself to the needs of the microphone that is connected to it. Similarly, the headsets are being required to effectively have their main control button short the microphone and ground (common) connections to signal the device for call-flow or media play-pause control.
Dealing with your XBox One’s controller
The headset jack on the XBox One’s controllers happens to be wired for OMTP which is also a common wiring method for regular computers, especially laptops. But, as highlighted in the OSX Today article, the Apple headset was wired up to CTIA standards.
But the author recommended a workaround to this problem by disabling microphone monitoring through the XBox One’s configuration menu. This is to reduce the buzzing associated with an electret-condenser microphone wired the wrong way, but may limit the headset’s functionality as a chat device when you play an online game for example.
Here, you have to enter the XBox One’s setup menu by double-clicking the XBox button on the controller, then select the “gear” icon to access the “Settings” menu. Then you have to turn the “Headset Mic” setting off and turn the “Mic Monitoring setting down to zero” to achieve this goal.
Personally, I would look towards purchasing a CTIA/OMTP adaptor online or through an electronics store and use this with the XBox One’s controllers so you can use the microphone on your Apple or other CTIA-compliant headset when you game online.