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      03-18-2012, 06:41 PM   #39
Technic
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Drives: 2012 E92 M3, 2014 528i
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Quote:
Originally Posted by VP Electricity View Post
After you mentioned this, I asked them if there had been any changes to the design, and Tech Support did not know of any.
The only difference that I know of is that the HD900/5 was a Marine version, the HD600/4 (one brand new and the other used) were not.

I asked the customer to swap 600/4 to see if anything changes.

It sounds to me quite decent, until attention is paid to the imbalance in sound level between the front and rears (fronts are the EPS 4ohms, rears are the rear/sides in parallel =2ohms). I have not found such an imbalance with any of my 2 PDX installs with the exact same OEM EPS speakers in the same exact configuration.
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