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JAYNO20 · 02-09-2013, 04:16 AM

I have an older Rockford Fosgate 500.2 unit (2002 model) and I had some questions about setting the gain. Everything I have read shows to take the RMS wattage X the ohm then get the square root of that. My only problem is since my amp is technically a 2 channel I am wondering how I do this with it in bridged mode.

That wouldn't normally be an issue aside from the fact that this amp also has a left and a right gain control. Now the amp is 500 RMS x 1 at 4 ohm bridged OR 125 x 2 @4ohm stereo. How would I go about using a DMM to set these gains as close to perfect as possible?

02-09-2013, 04:16 AM	#1 (permalink)
JAYNO20 Track Member Join Date: Mar 2012 Location: Pittsburgh, PA Posts: 802 Drives: 2010 370Z Nismo Rep Power: 14	Question about setting gain with a DMM I have an older Rockford Fosgate 500.2 unit (2002 model) and I had some questions about setting the gain. Everything I have read shows to take the RMS wattage X the ohm then get the square root of that. My only problem is since my amp is technically a 2 channel I am wondering how I do this with it in bridged mode. That wouldn't normally be an issue aside from the fact that this amp also has a left and a right gain control. Now the amp is 500 RMS x 1 at 4 ohm bridged OR 125 x 2 @4ohm stereo. How would I go about using a DMM to set these gains as close to perfect as possible? __________________ 2010 Solid Red NISMO #0334 - SOLD 2014 Red Hot Camaro ZL1