Question about KLH ASW10-120 Subwoofer

6 Answers

KLH ASW10-120B subwoofer

Aquired this unit from a friend as a non-working unit. I can read electronics schematics, I worked in electronics for 30 years. Where can I buy a schematic for this subwoofer? It has some fairly high power resistors that are pretty cooked, but I don't know the value.

Posted by on

  • 3 more comments 
  • monky Jan 29, 2008

    same problem exact electronics cook resistors

  • wb4005 Apr 14, 2008

    KLH ASW10-120B subwoofer problem, risiters fried, where is a dealer in maryland, and where do i get parts

  • Anonymous Apr 29, 2008

    Exact same problem. It fried the power resistors!!

  • edw928 Jun 18, 2008

    A crook sold me one saying that it works and since he had it with him at work and can't demo, and at $25, I took it home to try and it had crackling sound at any volume. The driver checked out OK, so it's the amp. Can the supposedly burnt resistor be found in Radio Shack?

  • Anonymous Jun 20, 2008

    i second the notion for a schematic. my power resistors look fine but two of the zener diodes look fried and i would love to be able to test them if i knew their rating.



6 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Master
  • 547 Answers

I realize that this is an old problem, but folks are still finding it on searches, so here goes.

Here are the two pages of schematics from KLH. I wrote to their tech department and explicitly asked for permission to share them here.

Here's the lower board, which has the power supply:
KLH ASW 10-120 subwoofer schematic - lower board

Here's the upper board:

KLH ASW 10-120 subwoofer schematic - upper board

Posted on Sep 25, 2009

  • Level 1:

    An expert who has achieved level 1.


    An expert that has over 10 points.


    An expert whose answer got voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 9 Answers

I had a simular problem with the woofer making a loud crackling sound when turned on. It was the main caps that had blown. They were replaced but blew again. So, I decided to fix it myself. The problem was, after testing all the resistors, that 6 of them were bad. The main caps are going to be hard to find because they are so big. You can goto Mouser Electronics (an electronics distributer) and get all the stuff you need there. The problem I'm having is that there was a jumper wire going from a resistor on the high/low level input board to the transformer board. On the transformer side the wire broke and I do not know where it was connected. I need to find out.

Posted on Mar 21, 2009

  • Level 1:

    An expert who has achieved level 1.


    An expert that has over 10 points.


    An expert whose answer got voted for 2 times.

  • Contributor
  • 4 Answers

This amp has a design flaw. They all fail rather quickly and then send 60 Hz HUMMMM tohe speaker, toasting it. The problem in my two sw10-120s is identical, both are rather new, and both failed at low volume after maybe a few hours of play. I see obviously blown power transistors or resistors. The heat detecting overload circuit doesnt do its job. The hmmmm occurrs when the unit is on, off, or on auto. Only unplugging it makes it stop. Chuck this amp and use the box as a passive 10 sub. What a piece of ****.

Posted on Sep 01, 2009

  • Elton John
    Elton John Oct 19, 2014

    Had the same problem - completely agree - What a piece of ****


  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

I removed the upper board by cutting all the wires from it to the lower board. I then isolated the line input for the amp (lower board) wired in a 1/4 inch female and removed the speaker. Put in a 100 watt Speaker and now use it as an amp for my keyboard. This is the only use for the crappy KLH circuitry. Shame on them, they should know better.

Posted on Mar 21, 2011

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Same amp fried after a year. Good bass, poor reliability. Trying to get it fixed/replaced right now (amp), but seems to be a lossed cause. Wish I could help more (with your issue), but once it burns...well, it burns:(

Posted on Mar 20, 2008

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Hello, I have the same unit and even though I havn't had any problems with it, i do have the instruction booklet plus some other "techie" type material that may help. My friends an engineer and had some I am completley new to this site and don't know how to get ahold of people directly

Posted on Feb 04, 2008

1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer


Do you know anything about wiring and newer door units? If you stay with your year, you could probably get power windows. If you want it all. You need schematics or your year and the year going in, you will also need a BCM for the year going in. and most of all You WILL need patience. Lots of wires to power up and cut and splice into. You buy the schematics years and BCM and post them, I will help you threw it. If you don't know, I wouldn't recommend doing this for your first time. You can waste a lot of money and still have a non working doors.

Aug 17, 2015 | 1994 Chevrolet C1500

2 Answers

Vizio sv320xvt mainboard not sending +5 to t-con

The missing +5 seems to me to be a real clue--try to follow it back to mainboard etc---it can be a open or just a processor is not switching it on---impossible to really get a component schematic with voltages etc as they do not want to sell and do not sell discrete parts--if you find it is there Google the internet for that board--seen some on ebay from dropped or junked sets and others elsewhere.

I do not like "replace the board either" but in some cases (which is what the maker wants it is the way the repair work is done now.

over 30 years here in experience from tube type sets to current junk.

Nov 06, 2012 | Vizio SV320XVT 32 in. TV

1 Answer

This is getting old. I may be able to get #1 replaced - am persuing that. As far as technical help or schematics, we are getting nowhere. At this point I do not feel I have received my money's worth...

If Hunter provided a wiring schematic for their dehumidifiers, you would had a response well before now. All they do provide is the Owner's Manual and a list of replaceable parts for your unit. Just in case you have misplaced yours.

Certainly, if you call their Tech Service Dept 1-888-830-1326, they may furnish one to you via email with an attachment, as well as sell you any parts you may need. If your unit is not still under the Five Year Limited Warranty.

Good luck and hope this helps you get the schematic you need.

Jun 21, 2011 | Hunter 34357 Humidifier

1 Answer

Monitor keeps going blank - when im on internet it will suddenly go extra bright for a half second, the blank. if I switch it off using the button on the side and switch it on again, it just goes blank...

loricaney, Do some research first. Go here: I just read a comment that some guy wrote. He stated that he aquired 30 Vs17 non-working units from a high school, and that 25 of them had bad (swollen or leaky) filter capacitors. The other 5 had cracked lcd panels. maybe $6 in new capacitors will restore unit for you. Do some reading in my fixya profile and "budmrtn" and "buddymc" fixya profiles. let me know if you want to do a DIY repair after you do research and visit YOUTUBE for video clips of owners doing typical capacitor removal and installation. 12fixlouie

Aug 09, 2010 | HP Vs17 17" LCD Flat Panel Monitor

3 Answers

Intermittent beeping

I contacted customer support... they tell me the FAQ information on their own website is incorrect. The opposite is true, therefore the following is correct:
  • If it does not beep, the powerboard needs to be replaced
  • If the unit continues to beep, the keypad needs to be replaced
Here in Canada, they will send you a new one within 3-5 days free of charge. Call customer support:

Canada: 800-501-9471
US: 800-677-LOCK

The woman was very friendly. Great customer support!


Dec 09, 2008 | Kwikset UltraMax Powerbolt 1000

1 Answer

Looking for schematic diagram for Dell MMS 5650

you will never find a schematic for a dell.

you can purchase this whole unit for the price of those ic's
the going rate is 30 to 70.00
I fix these only if they have frayed wire, otherwise junk pile.
sad but its the times we live in.

Apr 26, 2008 | Dell 5650 Computer Speakers

1 Answer

Schematic or solution for Mr Christmas light controller

Cold, possibly? Try putting the unit under a plastic container (like a large rubbermaid tub) with about a 100 watt bulb (work light) this should generate enough heat to keep it warm. My bet is moisture, rain, snow, cover it with a garbage bag when you put it out at xmas, also makes the unit some what invisible to thieves. just a thought

Dec 04, 2007 | Video Game Consoles & Games

1 Answer


try this site - should have manuals for your unit

Sep 24, 2007 | Sharp CD-BA300 CD Shelf System

1 Answer

Lens focusing ixus 30

With friends like this who needs enemy's [assuming the camera was like it when he /she gave it to you] A lens malfunction of any type is a costly repair In some cases a non repair because it would be cheaper to buy a new camera. Sorry to be harbinger of sad news

Aug 09, 2007 | Canon PowerShot S400 / IXUS 400 Digital...

1 Answer

RCA Projection TV MM52110 Won't Power Up

Being able to read a schematic and understanding how a TV works are two different things. These chassis that RCA used in these sets can be somewhat complex to troubleshoot. I would geuess that unless the power light comes on at all then you have a dead power supply in the TV.

Apr 14, 2007 | RCA MM52110 52" Rear Projection HDTV-Ready...

Not finding what you are looking for?
KLH ASW10-120 Subwoofer Logo

3,445 people viewed this question

Ask a Question

Usually answered in minutes!

Top KLH Audio Players & Recorders Experts


Level 3 Expert

5391 Answers

The Knight
The Knight

Level 3 Expert

75304 Answers

Vito Vacirca Jr.

Level 2 Expert

140 Answers

Are you a KLH Audio Player and Recorder Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides