Combining one set of amp controls to control two amps?

DICEPD · 25th June 2010, 04:47 PM

Hey guys,

I recently purchased two Rockford Fosgate P200.2 amplifier circuit boards to power my PA speakers.

I run the 12v amplifiers off a AC/DC inverter 15v/60a and plan on combining the amplifiers into one box, I have some extra amplifier heatsinks and four 12v fans to help with heat dissipation.

Here is a pic of one of the amps

I assume I can just undo the solder on the controls of one amp and wire some into the other one? If anyone has some thoughts please advise

irishlyrucked · 25th June 2010, 11:43 PM

i'm assuming you meant the potentiometers. If so, you would not want to combine them on to one potentiometer unless you replaced two single pots with a dual pot.

DICEPD · 26th June 2010, 12:03 AM

What do you mean the pots?

Minion · 26th June 2010, 05:54 PM

Pots are Potentiometers ,you know , the things you turn you controll the Volume , tone ect ?

DICEPD · 26th June 2010, 07:44 PM

Yeah I understand that, I mean what is a dual pot? I assume two separate inputs but separated completely and the same knob controls the two circuits?

irishlyrucked · 27th June 2010, 03:38 PM

a dual pot is basically two potentiometers that are controlled by one knob.

Th3 uN1Qu3 · 27th June 2010, 05:53 PM

Dual pots are what you want. Also make sure you get logarithmic (log) pots otherwise with a linear pot the volume will be low for 80% of the pot travel then increase rapidly, something which you don't want.

firechief · 28th June 2010, 10:07 PM

Wow - what is up with those little boards that are attached to the output devices? So those get removed and the transistors attached to the heatsink? I have a hard time beliving that they would make an acceptable heat transfer medium. Are these surpluss boards? where did you get them.
Intresting plan, keep us informed

25th June 2010, 04:47 PM	#1
DICEPD diyAudio Member Join Date: Jun 2010	Combining one set of amp controls to control two amps? Hey guys, I recently purchased two Rockford Fosgate P200.2 amplifier circuit boards to power my PA speakers. I run the 12v amplifiers off a AC/DC inverter 15v/60a and plan on combining the amplifiers into one box, I have some extra amplifier heatsinks and four 12v fans to help with heat dissipation. Here is a pic of one of the amps I assume I can just undo the solder on the controls of one amp and wire some into the other one? If anyone has some thoughts please advise

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25th June 2010, 11:43 PM	#2
irishlyrucked diyAudio Member Join Date: Feb 2010	i'm assuming you meant the potentiometers. If so, you would not want to combine them on to one potentiometer unless you replaced two single pots with a dual pot.

26th June 2010, 12:03 AM	#3
DICEPD diyAudio Member Join Date: Jun 2010	What do you mean the pots?

26th June 2010, 05:54 PM	#4
Minion diyAudio Member Join Date: May 2006	Pots are Potentiometers ,you know , the things you turn you controll the Volume , tone ect ?

26th June 2010, 07:44 PM	#5
DICEPD diyAudio Member Join Date: Jun 2010	Yeah I understand that, I mean what is a dual pot? I assume two separate inputs but separated completely and the same knob controls the two circuits?

27th June 2010, 03:38 PM	#6
irishlyrucked diyAudio Member Join Date: Feb 2010	a dual pot is basically two potentiometers that are controlled by one knob.

27th June 2010, 05:53 PM	#7
Th3 uN1Qu3 diyAudio Member Join Date: Feb 2010 Location: Bucharest	Dual pots are what you want. Also make sure you get logarithmic (log) pots otherwise with a linear pot the volume will be low for 80% of the pot travel then increase rapidly, something which you don't want.

28th June 2010, 10:07 PM	#8
firechief diyAudio Member Join Date: Sep 2008 Location: Near Seattle Wa	Wow - what is up with those little boards that are attached to the output devices? So those get removed and the transistors attached to the heatsink? I have a hard time beliving that they would make an acceptable heat transfer medium. Are these surpluss boards? where did you get them. Intresting plan, keep us informed

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