Problems with bass in one of my Klipsch KG4's

[Max Gardner]

First time poster here.

I recently came into a pair of Klipsch KG4's. I paid $0, as some local dude was just looking to clear out a storage locker as fast as possible. I'm not sure he knew what he had on his hands to be honest. In any event, the KG4's looked super clean to my eyes, apart from a few cosmetic issues. All the drivers are intact. I did have to pop out of a few of the cones, but that worked beautifully.

The only weird thing I noticed is that the speaker terminal plate actually says Heresy II on it! Now I know I'm dealing with KG4's because of the huge 12" woofers in the back of the speakers, so somebody must have just repurposed the terminal plate from a pair of Heresy's? No clue. Anyways, that was only sign I had that the KG4's were any less than pristine.

Anyways, after a couple months of listening, I realized that one of the speakers just wasn't putting out as much volume as the other, particularly in the low end. I swapped em out, plugged the L speaker into the R channel, and vice versa, and determined that the problem has to be the speaker, not the amp or the speaker cable. Did a blind test with a buddy to make sure I wasn't making it up, but correctly ID'd the lame speaker.

Any idea what my problem might be or how to start figuring that out?

 

[fredcohiba]

First step. Get the inner cardboard tube of a paper towel roll. Put one end at your ear and carefully - using safe volume levels, listen to each of the three speakers on the front baffle. Do they all emit sound?

 

[Roadrash]

I noticed the same thing with one of my Allison Twos. I took a digital multimeter and checked the impedance of each speaker. The suspected bad one was no where close to the 8ohm spec(if i recall it was way low), so I suspected maybe a voice coil was open. I removed one of the woofers and found that one was disconnected. Maybe you could just pop a woofer out of the suspected bad speaker and check all the wiring. If everything is hooked up you could have a fried voice coil in a woofer, or maybe something not hooked up right. I hope it's something easy. Welcome to AK!

 

[Max Gardner]

Welp, that was much easier than I feared. I identified the weak speaker, pulled it out and voila! One of the the connections had completely disconnected. Re-attached and we're good to go. Thanks all.

 

[Roadrash]

Welp, that was much easier than I feared. I identified the weak speaker, pulled it out and voila! One of the the connections had completely disconnected. Re-attached and we're good to go. Thanks all.

I love an easy fix! Happy listening!

 

[toxcrusadr]

So far so good. But are we sure the crossover is what it should be for a Kg4? It's usually mounted on the back of that terminal plate, so if someone replaced the plate, maybe the crossover is not correct. Why not pull one out and get some pics of the components.

 

[toxcrusadr]

http://audiokarma.org/forums/index.php?threads/recap-kg4-x-overs-or-crites.548323/

This thread has pics and a discussion of the apparently two versions of the Kg4 crossover. See if yours matches.

 

[classic carl]

Now I know I'm dealing with KG4's because of the huge 12" woofers in the back of the speakers,

Good for you on fixing the speakers, and welcome to AK.

You do know that is a passive radiator in the back, not a woofer, right? While you were inside, you should have noticed that there were no wires to the passive radiator. If you push on the passive, you should notice the woofers reacting in the opposite direction, and vice versa.