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      06-22-2016, 10:01 AM   #34
Viffermike's Avatar

Drives: '18 black-n-blue 718 Cayman
Join Date: Jan 2015
Location: Big D

iTrader: (0)

Originally Posted by quikM2 View Post
If you replace all the speakers and amp and sub do you need to pair it with an aftermarket HU or does the oem screen work?
The HU is separate from the amp (it's technically part of the iDrive system), so all functions should work.

That said, both the DSP and the ASD are in the amp module/assembly. By swapping out the amp, you lose the DSP but don't gain any additional tone or output controls beyond what the HU (Bass/Treble/Balance/Fader) or your replacement amp provide. The tradeoff, however, is worth it since the sound is much more even across the audible spectrum.

It's important to note that BMWs require amps with differential balanced speaker inputs, which narrows your available aftermarket choices considerably. Also, an aftermarket amp will increase the static volume of the ASD; choosing a model with gain adjustment for each channel (specifically, the rears) is important to keep it under control if you want to retain ASD.

What many 2Addicts have done is use TechnicPnP's plug-and-play harness to make installation -- and returning to OEM -- much easier. It's not required, but it keeps you from having to splice at least a dozen wires from the OEM harness.
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