What is the subwoofer ohm on klh asw10-120b - Audio Players & Recorders

Without knowing what they're hooked up too.. SOUNDS like your uder powering them, OR over powering them. Look at the back of the speakers the wattage is what your looking for, look at your amp, example: 1000w speaker running on 50w amp = not good.

This woofer was taken from a KLH Pro-71 Series. These were the top of the KLH line from ~94-99 when it was still a real company and not just a name. The woofer is rated for 5-350 watts at 8 ohms. Source: KLH Pro Series-71 Spec Sheet.

There are a couple of them on eBay...

http://desc.shop.ebay.com/i.html?_nkw=KLH+ASW10&_sacat=0&_odkw=Harman+Kardon+AVR+55+remote&_osacat=0&_trksid=p3286.c0.m270.l1313&LH_TitleDesc=1

http://cgi.ebay.com/KLH-10-Replacement-Sub-Woofer-4-ohm-ASW10-100-/310249254559?pt=Speakers_Subwoofers&hash=item483c4bee9f

Can't find it online, but if you take it out and look it will be stamped right on it.

Did you ever find a solution for this problem? I have the exact same thing happening with my KLH subwoofer and I'd love to know how to fix it!

it's an 8 ohm driver. It need to be VERY efficient, around 90-91db @ 1w. Measure the enclosure size LxWxH then divide by 1728. That will give you your cu. ft. internal airspace of the box. Then look for a driver that will effectively work in that space. Shouldn't be too expensive, paper cone, foam surround, 8ohm impedance. Hope this helps

KLH 900B tweeter specifications: 6 ohm, 40 watts. By the way, KLH's QC for speakers could be improved. One of my 900B tweeters quit because the spacing for the voice coil was way off reasonable tolerance and the body of the speaker coil base pillar (ie: magnitized part) was off-center - and cauesd the coil to ware and short. I contacted KLH but they did not respond.

If you place an ohm meter across the capacitors, the ohms should slowly drop as the capacitor charges. You can check continuity of the coils with continuity function of the multi tester.
Madisound.com is a good source for quality components.

I'd suspect the 6800uF caps, but I don't know for sure.

If it helps, here are the schematics for the upper and lower boards:

Upper board
Lower board

I wrote to KLH to ask for them, and explicitly asked for permission to post them here.