BMW 3-Series (E90 E92) Forum - View Single Post

dtm_latshaw · 07-29-2024, 02:47 PM

Hello all, new here. Have been trolling the encyclopedic posts for the

stereo system in this car. I have read maybe 1% of the posts here looking for answers, and have found a lot!

Bought this for our daughter as her first car from our mechanic. Runs great, looks great, price was great, and the interior even smells great. But the LCD readout on the Professional HU was dead, so I thought how hard can it be?

Also wanted to get a backup camera for her.

I think I have the Top Hifi / Logic 7 option 677. Here are my clues: No Nav or iDrive, speakers in all 4 doors. Speakers on the rear deck, and subs under each front seat. Some posts here indicate a center speaker in the dash but I do not see one, maybe it's hidden? There are fiber connections on the HU harness, as well as speaker wire connections. There is an amp in the trunk just in front of the tail light.

So do I have the Logic 7? Follow up question, if there is an optical amp, why do I also have speaker wires? Is the amp only for the subs, rear deck, and dash speaker?

If I do have the Logic 7 is there a magic black box to keep the optical amp? I believe the amp is working, I have light in the fiber connection.

Here is the list of components I have so far:

Kenwood DMX4707S
PAC RP4.2-BM21 Wiring Interface
Connects2 CT51-BM07 Amplifier interface
American International Dash Kits
Boyo VTL17ir Backup cam

We had everything wired up with the Kenwood attached to the PAC and Connects2 but didn't have sound. Called Crutchfield and did some testing. He called PAC tech support and they said the Connects Amp interface would not work with our car and this equipment so they sent me a refund.

During testing I plugged the RCA connections from the PAC into the Kenwood and got audio on the front speakers! I think I can get all 4 door speakers working with my current equipment, as well as the backup cam.

My current plan is to use the Kenwood and PAC to get sound through the doors and get everything mounted up so she can drive the car again.

TLDR:

Will I cause any problems or hurt anything by not having the optical amp connected?

Is there an adapter for the Optical Amp?

Thanks so much!

PS: I miss the days of installing a Pioneer tape deck and connecting it to some 6x9's!

07-29-2024, 02:47 PM	#1
dtm_latshaw New Member 0 Rep 11 Posts Drives: 2006 BMW 330XI Join Date: Jul 2024 Location: York, PA iTrader: (0)	2006 330xi Sound system questions. Hello all, new here. Have been trolling the encyclopedic posts for the stereo system in this car. I have read maybe 1% of the posts here looking for answers, and have found a lot! Bought this for our daughter as her first car from our mechanic. Runs great, looks great, price was great, and the interior even smells great. But the LCD readout on the Professional HU was dead, so I thought how hard can it be? Also wanted to get a backup camera for her. I think I have the Top Hifi / Logic 7 option 677. Here are my clues: No Nav or iDrive, speakers in all 4 doors. Speakers on the rear deck, and subs under each front seat. Some posts here indicate a center speaker in the dash but I do not see one, maybe it's hidden? There are fiber connections on the HU harness, as well as speaker wire connections. There is an amp in the trunk just in front of the tail light. So do I have the Logic 7? Follow up question, if there is an optical amp, why do I also have speaker wires? Is the amp only for the subs, rear deck, and dash speaker? If I do have the Logic 7 is there a magic black box to keep the optical amp? I believe the amp is working, I have light in the fiber connection. Here is the list of components I have so far: Kenwood DMX4707S PAC RP4.2-BM21 Wiring Interface Connects2 CT51-BM07 Amplifier interface American International Dash Kits Boyo VTL17ir Backup cam We had everything wired up with the Kenwood attached to the PAC and Connects2 but didn't have sound. Called Crutchfield and did some testing. He called PAC tech support and they said the Connects Amp interface would not work with our car and this equipment so they sent me a refund. During testing I plugged the RCA connections from the PAC into the Kenwood and got audio on the front speakers! I think I can get all 4 door speakers working with my current equipment, as well as the backup cam. My current plan is to use the Kenwood and PAC to get sound through the doors and get everything mounted up so she can drive the car again. TLDR: Will I cause any problems or hurt anything by not having the optical amp connected? Is there an adapter for the Optical Amp? Thanks so much! PS: I miss the days of installing a Pioneer tape deck and connecting it to some 6x9's!
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