Question about KEF Audio HTB2 Subwoofer

Open Question

Kef htb2 subwoofer buzzing

The buzzing sound is proportional to the volume level rather than a constant humming consistent with a grounding issue. The active and passive drivers have not experienced any trauma...

Posted by on

6 Suggested Answers

6ya6ya
  • 2 Answers

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

Hi,
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.
goodluck!

Posted on Jan 02, 2017

  • 1 Answer

SOURCE: Kef Kit 100 Subwoofer Buzz

i got the same buzz problem

Posted on Dec 19, 2007

  • 39 Answers

SOURCE: kef kit 100 subwoofer buzzing

if you have still the problem, I got the solution from Kef USA. It is somewhat involved in taking the unit apart and replacing a resistor and capacitor. With the instructions supplied any electronic techician or TV repair man can do it in less then 1 hour. email me and I forward the instruction in PDF: Xxel_g@mail.coX . Replace the first X with a and last X with m in my email address.

Posted on Mar 22, 2008

  • 39 Answers

SOURCE: KEF KIT 100 Sub woofer continuously buzzing

send me a request to my email address axel_g@mail.com and I send you a fix, Axel

Posted on Aug 10, 2008

  • 75 Answers

SOURCE: kef subwoofer kht 2005:2

check for the connection og the main wire is cut.. or check the supply..

Posted on Dec 08, 2008

  • 1 Answer

SOURCE: KEF Subwoofer AV1 and KEF Activator. Need specifications

Unit is now 12 years old min. and no longer state of the art.... i offer $400

Posted on Jan 28, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

4 Answers

Klh powered subwoofer model ASW10-120B... when you plug in to power... it makes a loud buzzing/humming noise


I would check the caps on the power supply. They are rather large electrolytic capacitors that will look like they burst and/or leaking. When these die, the caps ground and the sub will make a loud buzzing sound. If you are handy with a soldering iron you can replace them yourself. Replace them with the same voltage or a little bigger and same with the size.

If the cap. says 16v 4700pF on it, for example, a 20v 5300pF or a 16v 6200mF cap. will work for this application.

when-plug-in-power-makes-loud-buzzing-lgqxs5x4gp2eri5a2qchwtne-5-0.jpg

when-plug-in-power-makes-loud-buzzing-lgqxs5x4gp2eri5a2qchwtne-5-1.jpg

when-plug-in-power-makes-loud-buzzing-lgqxs5x4gp2eri5a2qchwtne-5-3.jpg

Jan 05, 2016 | Audio Players & Recorders

1 Answer

Loud buzz in sub woofer, soundbar sounds fine


How to Stop a Subwoofer Hum - HowStuffWorks

electronics.howstuffworks.com/how-to-stop-subwoofer-hum.htm
Would you like to learn how to stop your subwoofer from making a consistent low-frequent hum or buzz? Read this article to learn how to stop a subwoofer hum.

Aug 03, 2015 | Audio Players & Recorders

1 Answer

Subwoofer is hummig what is this noise


Hum is a constant low-frequency buzz, usually at about 60 Hz or 120 Hz, which results from voltage differences between true "ground" (what you'd get shoving a copper pipe into the ground) and the electrical "ground" of your receiver's chassis When this voltage differential exists, it's called a "ground loop," and the hum it produces is darned annoying. You'll hear the hum mainly from the subwoofer because it's a low-frequency noise, you will need a ground loop insulator they are about $20 at any electronic store

Dec 28, 2013 | Vizio 2.1 ch. Sound Bar with Wireless...

1 Answer

How do I open up a Kef egg speaker


9aa4f771-e31b-4b6e-a152-d7f1795ba2f6.jpgRemove the rubber ring around the speaker, by pull gently outwards. then remove the speakers or resonator. if necessary remove the other side as well

Jan 26, 2012 | KEF Audio HTB2 Subwoofer

2 Answers

I have a Boston Acoustics VR-500 Subwoofer with a problem. As soon as anything is plugged into the line level RCA jacks, the subwoofer produces a loud buzz/hum. I have tried connecting it to the subwoofer...


I'm thinking you have an open shield ground on the RCA input side. Connecting speaker inputs possibly restores the ground. Try connecting the high level inputs then disconnect the remote end of the cables (floating the grounds).

Then get out an ohmmeter and find that open circuitor or bad solder joint between RCA ground and real ground in the speaker's amplifier. Or.... if speaker ground kills the hum and you want to use RCA Line Level input to the sub, just connect one minus speaker output on your source amp to one minus on the sub's amp.

Mar 01, 2011 | Audio Players & Recorders

2 Answers

The amp on my kef sub woofer amp is making a consent buzzing noise it sounds like a kettle boiling. Help


Ok so no guarantees this will work, but it did for me and I knows it's very late but hopefully it will help someone else with a similar problem.

I had the same problem and as clmrt5000 said a very long time ago there could be an issue with a ground loop, although this is likely to give a high pitched buzzing sound.

This can easily be fixed by adding a switch to disconnect the mains earth from the back plate, or you can just unscrew the earth and tape it up, this fixed my ground loop, (some models already have a ground lift switch)

As for the "boiling" sound I also got a saw tooth wave sound (like a strange squeak or beep that changed frequency) this is caused by faulty components, and thanks to Frank Johnson (http://lug.demon.co.uk/kefrepair/?p=60) who suggested that you can simply and easily replace 3 capacitors on the main amplifier board (c58 - 47uF 63v or 100v) + (c52 & c53 - 220uF 25v) but stand them away from the board on the length of the capacitor leads to prevent them from absorbing heat from surrounding hot components (with heat shrink tubing to prevent shorting)

Now my sub works as good as new, apparently these 3 capacitors can cause all kinds of problems it's a common fault, so if you are handy with a soldering iron, or know someone who is you could save yourself a lot of money by repairing you faulty KEF sub.

p.s. if you have ANY of the KEF PSW subwoofers they all have similar issues, you can find a guide to fixing them at the link above, Frank is a brilliant and very helpful man.

Jan 07, 2011 | KEF Audio PSW 1000 Subwoofer

2 Answers

Buzzing/hum website say it's a ground loop or amp issue. Whats the difference and how can I easily fix it?


Hello,the most common solution is to simply replace the subwoofer cable itself. the ground on this cable is the outside of the connector and not the pin in the center and they do fail. You can use any rca cable as a quick test to confirm if the cable is at fault.

Sep 13, 2010 | Energry Speakers Energy Speakers S8.3...

1 Answer

Humming sound coming from subwoofer what is that?


Sounds like a ground loop to me. Try throwing a ground lift (adapter that goes from 3 prongs to 2) on your sub's IEC cable. Hope this helps!

Dec 19, 2009 | KEF Audio KIT100 System

2 Answers

LOUD BUZZING/HUMMING SOUND- CAN HEAR OVER AUDIO


have someone check speaker ground to the TV chassis. Your speakers are picking up reverb from the Video Signal.

Aug 19, 2009 | Vizio L37 Television

3 Answers

Kube 2 subwoofer hum


The Kube Sub-woofer is earthed via its 3 pin plug. The Onkyo and other components I have in my system are not (they are double insulated). During normal operation, a difference in electrical potential can exist between these components in the system. I found that this potential was finding a path to earth via the audio cable and on through the subwoofer's earth. The path was via the earth portion of the audio cable and so gave the hum irrespective of volume levels set either on the Onkyo or the sub.

The fix is to ground the Onkyo to the sub. I used a length of electrical cable between a panel mounting screw on the back of the sub and a screw on the casing at the rear of the Onkyo. Try it out with a piece of cable manually touching screws with the bare ends of the cable until you find ones that give continuity( the hum will go immediately). I then crimped a small fork end electrical fitting onto each end of the cable which can be slid under the slighly loosened screw head and resecured. All I hear now is the fan on the Blu-Ray player!

Jan 31, 2009 | Onkyo TX-SR606 Receiver

Not finding what you are looking for?
KEF Audio HTB2 Subwoofer Logo

Related Topics:

67 people viewed this question

Ask a Question

Usually answered in minutes!

Top KEF Audio Audio Players & Recorders Experts

 Grubhead
Grubhead

Level 3 Expert

5020 Answers

Steve

Level 3 Expert

3287 Answers

Greg Cann
Greg Cann

Level 3 Expert

1114 Answers

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

Answer questions

Manuals & User Guides

Loading...