Bimmertech Alpha One- static- help!

[st0nge]

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?

[zx10guy]

Have you submitted a support request on their website? They're pretty responsive.

[st0nge]

Originally Posted by zx10guy

Have you submitted a support request on their website? They're pretty responsive.

Yes only sales support was available yesterday. No tech support.

I found another thread where somebody had a similar issues and had to do some coding to get rid of it. The HU is looking for “MOST” and the red light inside blinks associated with popping coming from the speakers

[SchwarzN52]

Originally Posted by st0nge

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?

I have the alpha one amp, no static issues. What system did your car come with originally?

[st0nge]

Originally Posted by SchwarzN52

I have the alpha one amp, no static issues. What system did your car come with originally?

Major face palm on my end. I was testing it without the drivers side kick panel installed due to all the wiring I had to run up the dash. In doing this, there was an unplugged POST wire that goes into that lower panel that completes the loop. Plugged it in, and all good. Sound is amazing paired with HK speakers coming from a totally base package.