Klipsch Promedia 2.1 sub mod... HELP!!

ibanman555 · 24th January 2012

Hey everyone, So I have a speaker system that doesn't work right for some reason but that's neither here nor there... basically what I would like to do is input audio signal to this powered sub right to the actual sub preamp circuit. I just am not sure where to input the mono signal into the circuitry... but I have the schematics here...

Klipsch Promedia V2.1 Amplifier Repair

I have the ability to control the volume via the Presonus Central Station I have here. Any ideas? I just don't know schematics well, but I can surely put it together with a little guidance!

Bill@WelcomeHome · 24th January 2012

well, I'm not a tech either but the sub board has a connection point marked "LF In" and "Ground". I'd probably start there.

ibanman555 · 25th January 2012

Just tapped a 1/4 inch tip connection into the LF In and it worked like a charm! Just had to study the schematics a little closer! Thanks!

24th January 2012	#1
ibanman555 Gear interested Joined: Feb 2011 Posts: 7 Thread Starter	Klipsch Promedia 2.1 sub mod... HELP!! Hey everyone, So I have a speaker system that doesn't work right for some reason but that's neither here nor there... basically what I would like to do is input audio signal to this powered sub right to the actual sub preamp circuit. I just am not sure where to input the mono signal into the circuitry... but I have the schematics here... Klipsch Promedia V2.1 Amplifier Repair I have the ability to control the volume via the Presonus Central Station I have here. Any ideas? I just don't know schematics well, but I can surely put it together with a little guidance!

24th January 2012	#2
Bill@WelcomeHome Lives for gear Joined: Feb 2010 Posts: 4,185	well, I'm not a tech either but the sub board has a connection point marked "LF In" and "Ground". I'd probably start there. __________________ "We have a situation where somebody has learned that 'tape' sounds good. Tape doesn't sound good. Tape sounds like crap. But sometimes good stuff gets put on tape." "Putting crap to tape...sounds like crap." Show business: we're all here because we're not all there. Resistance is not futile. It is voltage divided by current. "I do not think that the wireless waves I have discovered will have any practical application,..." Heinrich Rudolf Hertz

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25th January 2012	#3
ibanman555 Gear interested Joined: Feb 2011 Posts: 7 Thread Starter	Just tapped a 1/4 inch tip connection into the LF In and it worked like a charm! Just had to study the schematics a little closer! Thanks!