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st0nge · 07-09-2023, 05:16 PM

In the process of installing the Alpha One amp by Bimmertech. since I have a 2011 with base stereo, I have no amp currently and have to run the supplied harness from trunk to factory HU. Got that done, hooked up and installed the power/ground and figured I’d test it before I run wires to the factory woofers. Reconnect battery, and there’s a weird static sound coming from speakers, and noticed the USB option from input is gone (BMW Professional unit, no iDrive). Usually connect phone to Bluetooth using the AUX/USB port using an adapter, and it says connected but no audio coming out, only from FM/AM radio, and the on/off static. Swapped back harnesses to factory setup and same thing, no sound on AUX and staticky 🙄

Any help?

07-09-2023, 05:16 PM	#1
st0nge New Member 0 Rep 25 Posts Drives: 135i Join Date: Oct 2018 Location: CT iTrader: (0)	Bimmertech Alpha One- static- help! In the process of installing the Alpha One amp by Bimmertech. since I have a 2011 with base stereo, I have no amp currently and have to run the supplied harness from trunk to factory HU. Got that done, hooked up and installed the power/ground and figured I’d test it before I run wires to the factory woofers. Reconnect battery, and there’s a weird static sound coming from speakers, and noticed the USB option from input is gone (BMW Professional unit, no iDrive). Usually connect phone to Bluetooth using the AUX/USB port using an adapter, and it says connected but no audio coming out, only from FM/AM radio, and the on/off static. Swapped back harnesses to factory setup and same thing, no sound on AUX and staticky 🙄 Any help?
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