Expert: Cleggsan - 9/21/2009

Question
I was hoping you could help me out. I have (4) Rockford T112D4's with (2) fiberglass port boxes for two 12's made to their (RF's) specs. Also I have (2) T-600-2 RF Amps. What would be the best way to wire these to get the most RMS power.....I also have a RF 3Sixty.2 that I haven't yet installed.....The rest of my system consist of (6) RF T162S's running off of an RF T-400-4.

Any help would be greatly appreciated, Thanks in advance

B. Scott Ireland
R&R Tech Consulting  

Answer
The amplifier is:

Power T600-2 - 600 watt 2-channel amplifier
200x2 @ 4 Ohms, 300x2 @ 2 Ohms, 600x1 @ 4 Ohms Bridged.

The speakers are:

# T112D4 - 12" Power Stage-1 DVC (2x4 ohm) subwoofer

The object is to match the impedances between the amplifier and the speaker loads.

So, here is my suggestion (but there are other combinations that will work just fine).

ONE: Put the two amps in bridge mode.  
TWO: Put one speaker box onto one amp.
THREE: Wire the two speakers in each box for 4 ohms. Go to page 6 of the subwoofer manual at:

http://www.rockfordfosgate.com/rftech/library/2004/5_Subwoofers/1230_50082B_RF_P...

and wire according to that for two speakers @ 4 ohms.

This way each box will be getting the full 600w from the amp.

Hope this solution works for you.  Nice setup; should sound awesome.

C