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      12-02-2017, 04:41 AM   #12
nsa100
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Drives: G31 540i & G30 540i M Sport
Join Date: Jun 2013
Location: West Yorks, UK

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Quote:
Originally Posted by sor View Post
Thanks for the tip. I’m sure it’s fine but it bugs me a little that there’s not much control over or understanding of the crossover frequency and slope for the signal being tapped into. It’s likely higher than I’d set the extra sub to anyway though.

Your box turned out great.
I have played some test tones and the signal to the Underseat Subs goes all the way down to 20Hz. The problem is the volume to the Underseat Subs gets rolled off after about 75% volume. The Audiocontrol LC2i can add this back in.

The DSP also helps a lot to tune the system. This can make night and day difference.

Of course some amplifiers also have some parametric functions, but are quite limited.

I used to have the Alpine MRD-M501 which when combined the RUX-4280 was brilliant at getting the subs tuned in because it had volume control, phase control, time alignment and a very good parametric equalizer all in one that you control from the driving seat,; which could be mounted in a small cubby hole!
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