DSP systems have the sub in the right rear corner. That's an easy way to tell.

Think what you want, but any X5 owner buying a CleanSweep is wasting not only money, but precious space.

The Clean Sweep can be defined in a block diagram as a speaker level and balanced-line LOC, a digital EQ that auto-adjusts to make the input as flat as possible, an aux in, and a line driver with a volume knob.

The volume knob is intended to be used with systems (like the VW Monsoon system or the Acura TL) which actively change their equalization drastically with volume (in that case, taking all the bass out). The BMW systems don't do that in the HU... they might do it in the amp, but if you are bypassing the amp, you don't need it.

It seems ungracious to keep complaining about the forum, frankly. There are many forums out there and their strengths are different. The Audio and Electronics forums on bimmerfest and bimmerforums are VERY different, for example.

The biggest difference I notice on this forum is that there aren't a lot of stickies, so you need to search for what you're looking for. I don't get that you've done that yet.

At my shop, we had an X5 owner for a customer a while back, and I found everything I needed about doing a very clean high-fidelity upgrade using the OEM HU here on xoutpost.com.

I just had to look.

You can bypass the OEM amp, get 4 channels of full-range un-equalized sound, and run those into any balanced-capable amp or into various other means of going single ended (my personal favorite is the Iso-Max CI-2RR).

It's not that hard.

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