You are a beast brother, I cannot thank you enough for doing this video. What a great job and your hard work is much appreciated! I want to bypass all factory crap and feed my speakers with a new aftermarket amp fed with a aftermarket bluetooth head unit.
I have the same amp in my E64, but both the subwoofers wouldn't work and there was no bass at all. Everything else was worked, just no bass at all. For me (after tremendous blood sweat and tears), it turned out to be the negitive output for both left and right subs from the amp that are at fault. I used the center channels negative wire and replaced it with the subs negative lead, and suddenly I have bass. I did the same for the other side, and still used the center channels negative lead to the amp (but continued using the subs own positive wire). Nutshell: Bypass the negative wires for the subs, and instead tap in to a different speakers negative wire. To prevent any further strain on this already failing amp, i decided to use the positives from the L7 amp for the subs, and the negitve from the center channel to feed into a high level (speaker line, as opposed to RCA) into a second cheap amp to drive the subs. Working nicely so far. Sorry for the long comment, I just hope this spares someone the pain I had to go through to figure this out. I really did not want to spend £350 for a second hand ebay one (which could well fail after a month). Apperently bmw will sell u a reconditioned L7 amp, but i never investigated that route. I still do not know what exactly failed in the amp to cause the no bass issue, but i know this workaround is going strong for me.
Whats up Pat, my E92 sounds just went out. I tried capping the Fiber Optic loops but neither the TCU, or AMP, is looping back sounds to determine which device is the issue. I was thinking this is a good time to replace the whole system. My question is, once the wires are determined, do I simply replace the head unit with an after market unit, then get any amp and plug those wires into the new amp and would that allow me to no longer be dependent on the fiber optic? I would appreciate your feedback on this. I don't know much about sound systems but just want to know how I can bypass the Fiber Optic, head unit, and Logic 7 amp all together since I have an aftermarket navigation screen that does CARPLAY but I cant get the sound to output anymore eversince my sound crapped out on me. I am having the hardest time isolating which module has gone bad so I want to get rid of all of it.
Fall I did was really remove everything including the app and then spliced into the wires at the app for the speakers and the power were the handed it was I didn't go as far as to mess with any fibre optics. I just unplug those
@@ProjectsPat sorry i dont understand. my amp is fried. when put a cd in the ccc where are the outputs coming from, so can add them to my new JL amp or alpine amp . sorry i know people are say to get signal off woofer cables , so sounds comes from ccc to woofers then amp or ??
PrOjEcTs Pat I just want to add an aftermarket amp to power the Bavsound upgraded speakers that I have installed. You can email me at juneharris526@yahoo.com, thanks.
@@bagramfacilities gotcha. I I dont really have time to do any side work. Just adding a sub th shouldn't be too hard. There are low level lines there you can connect rca jacks to.
