Repairing Guides

how to repair home theater subwoofer

by Mr. Paxton Lehner Published 1 year ago Updated 1 year ago

How to fix a subwoofer with no sound for home theater

  • Examine every part of your subwoofer. You may want to look very carefully at every element of your subwoofer before you...
  • Check the volume of Home Theater. When you experience difficulties with the home theater system, checking your home...
  • Assess the Home Theater is on the Right Input. In order to find sound and...

Full Answer

How to rebuild a subwoofer?

  • a screw-driver
  • a soldering iron
  • an air compressor
  • and a multimeter (or tester)

How do you fix a blown subwoofer?

Yes, there are ways to fix a blown subwoofer, but it is not something to be taken lightly. You’ll need to detach and separate parts of the subwoofer, which requires precision and skill. The act of fixing the area of the subwoofer that has been damaged is also very challenging.

How much should you pay to install a subwoofer?

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How to fix a blown subwoofer like a pro?

Steps to fix a blown subwoofer: A complete guide

  • Step-1: Check the voice coil. Before you get started, check each and every part of the subwoofer really carefully. ...
  • Step-2: Check the speaker cone. ...
  • Step-3: Detach the speakers. ...
  • Step-4: Separate the voice coil and speaker cone. ...
  • Step-5: Fix the voice coil: It’s fixing time! ...
  • Step-6: Fix the speaker frame. ...
  • Step-7: Reassemble and fix other components. ...


Can subwoofers be repaired?

Can you fix a blown subwoofer? Yes, you can fix a blown subwoofer especially when it is partially blown sub damaged cone. However, a damaged voice coil will be difficult to replace. Depending on the extent of the problem, the best solution is to purchase a new subwoofer.

How do I fix my subwoofer not working?

You never want to connect or disconnect any cables while anything is on, lest something incurs accidental damage.Check connections and speaker wires. ... Check outlets, power cable, and fuse. ... Check system and menu settings. ... Verify connections, turn on the subwoofer, and set the volume.

How do I fix my surround sound subwoofer?

0:115:34HOW TO REPAIR A SUBWOOFER SURROUND! - YouTubeYouTubeStart of suggested clipEnd of suggested clipBut there is a nice hole. Just in the top there so I'm going to be using some all-purpose highlyMoreBut there is a nice hole. Just in the top there so I'm going to be using some all-purpose highly flexible silicon silicon sealant make sure it's highly flexible. If it's on the surround.

What causes subwoofers to stop working?

Short Circuit The most common cause of speaker failure is short-circuiting. A short circuit in the wires providing the signal will prevent the signal from ever reaching the subwoofer. A short circuit at the terminals on the subwoofer will also prevent electrical current and signal from reaching the subwoofer.

How do you diagnose a subwoofer problem?

Test the sound at a low volume to listen for whether your sub has been blown. If it is distorted, you have a partially blown subwoofer, and if there is no sound at all, it is completely blown. If the subwoofer is receiving its signal via a cable, then check the cable before rushing to conclusions.

How do I test my home theater subwoofer?

0:462:49How To Test A Subwoofer To See If It Works A Quick Test - YouTubeYouTubeStart of suggested clipEnd of suggested clipRight here so that is a quick test if you do not have your tuner hooked up for your radio. Just plugMoreRight here so that is a quick test if you do not have your tuner hooked up for your radio. Just plug in your cables. To the back of the subwoofer.

How do I know if my subwoofer is damaged?

0:142:46Car Audio : How to Tell if a Car Subwoofer Is Blown - YouTubeYouTubeStart of suggested clipEnd of suggested clipIf it won't move. Now if the subwoofer won't move at all when you push down on it then it'sMoreIf it won't move. Now if the subwoofer won't move at all when you push down on it then it's definitely bad it's frozen solid voice coils just frozen solid.

Why is my subwoofer crackling?

Speaker crackling is almost always caused by a connection problem. Someplace between your amplifier and your speaker driver, there's a bad wire which is causing the driver to move abruptly, causing interference.

Do subwoofers have fuses?

Fuses for subwoofers can be located in-line with the subwoofer wires, within the speaker enclosure, and if there is an amp dedicated to the subwoofer, the fuse could be located there. In-line fuses can have different looks.

What could be wrong with my subwoofer?

Troubleshooting. Subwoofer issues are typically caused by one of two things: improper settings or broken receivers. You can troubleshoot the lack of bass or other sound effects that decrease the quality of sound by checking and adjusting the settings of the subwoofer as well as your audio system.

How Does A Home Theatre Subwoofer Work?

Then we can go through a quick and dirty checklist, and grab some tools.

What is the center of a subwoofer?

Just inside from this is the diaphragm or cone (Normally a more rigid material in the middle). In the center is a dust cap. This protects the voice coil from dust. Most Home Theater subwoofers are enclosed in a box. They may be powered by themselves or may be connected to an external amplifier.

What does a speaker do?

All speakers do is convert electrical signals to sound. So the signal needs to get to the speaker. It’s Simple right? As for the speaker itself, it’s protected by a hard basket or frame holding it all together, Suspended just inside is a foam ring that remains pliable and able to move with the thrust of the speaker.

Why use a razor blade on a cone?

Many find that a razor blade helps to remove things nicely; one tip would be to use the razor blade at an angle to the cone you will be able to clean the old material off easier and reduce the possibility of cutting into the cone.

Why do you need a subwoofer in home theater?

Most speakers in an audio or home theater system are unable of reproducing all of the frequencies supplied to them by your audio source, therefore subwoofers are essential. If you don’t have a subwoofer, you’ll miss out on some of the sound. Low frequencies also help to create the full, rich, three-dimensional soundscapes that we love in movies and music.

What is the subwoofer connected to?

Make sure the subwoofer is linked to the audio system’s or TV’s MIX or SUB output.

How to pick a button in a symlink?

Just spin the button or click the input or source button that you want to pick.

What to do if your A/V receiver is spring loaded?

If your A/V receiver is equipped with spring-loaded clips, make sure the bare wire is fully inserted and making excellent contact with each port. This sort of connection is prone to breaking free, if wires are pulled on.

What to do if you can't hear test tones?

If you can’t hear test tones from several of your speakers, the next step is to double-check that all speaker wiring attached to the back of the receiver is correctly connected and in excellent working order.

Why won't my subwoofer turn on?

If the subwoofer won’t turn on at all, or if it does turn on but won’t play anything, it’s likely faulty and has to be replaced. And, before you go shopping, study up on your subwoofer basics so you know what would work best for you.

How to start cycling on TV?

To start cycling on the screen, tap the remote on the TV and hit the Input or Source button.

How To Repair A Subwoofer?

All you need is some tools and ingredients that almost everyone has lying around the house! Cut open your old subwoofer, and you’ll find several different parts: usually, an empty metal box, a broken piece of paper cone attached to a metal coil and some screws.

How Do I Ensure My Repairs Are As Substantial As Possible?

By making sure that the coil is fully attached to your subwoofer’s paper cone, that you remove all of the old glue from both parts before applying new glue and using a heavy object while they dry. You may also want to check out this guide for more information on how to repair speakers:

How Do I Stop A Subwoofer From Shaking?

If that’s not the case, consider placing the subwoofer on top of a coaster or another piece of soft material to dampen the vibrations.

How Do I Fix A Subwoofer That Only Makes Buzzing Noises?

You may also want to clean out your unit with compressed air and check all of the connections are tightly in place:

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