Factory Rear Channel Filters?

[l'Ingegnere]

Is there any way of finding out if the rear deck channels have any type of high/low pass filtering on them and what the frequency bands are? Has anyone already done this?

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[brandonc]

Is there any way of finding out if the rear deck channels have any type of high/low pass filtering on them and what the frequency bands are? Has anyone already done this?

would like to know the same

 

[brandonc]

want to know the same

 

[kratch]

I am also curious. I have been searching for a way to correct the abysmal audio performance in my 2015 GT 400A. I replaced the rear speakers with a pair of Pioneer TS-A1684R 6.5" 4-way speakers and general audio quality improved significantly but front still sounds 'muddy'. It does sound like there is some kind of low pass filter for the rear speakers, which would make sense given the 6.5" factory woofers in the doors - but I don't have anything but my opinion at this point. I have VCMII on the way and I'm going to start fiddling with ACM and DSP HEX strings soon, maybe there is a way to disable low pass (if it is present) with some FORScan tweaks.

As-Built ACM and DSP settings for my car (2015 GT Premium, Group 400A with MFT/Nav, no factory sub) below:

ACM 727-01-01 1850 F800 44D4
ACM 727-01-02 0200 33
ACM 727-02-01 2E5F
ACM 727-03-01 285A
ACM 727-04-01 0001 0155 53DD

DSP 783-01-01 0000 8C
DSP 783-02-01 018E

 

[kratch]

Evidently, this question has already been asked:

https://www.mustang6g.com/forums/showthread.php?t=81913

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