Repairing Guides

how to repair subwoofer amplifier

by Jamaal Johnson Sr. Published 1 year ago Updated 1 year ago
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Simple Procedure

  1. Watch the Video First
  2. Check Power Supply First. The subwoofer comes with a 1.5 amp DC power adapter.most of the case power adapter does not work. ...
  3. Check the Voltage With Multimeter. ...
  4. Let's Make the Power Supply
  5. Circuit Diagram
  6. Parts List
  7. Open Sub Woofer Enclosure
  8. Setup the New Power Supply
  9. Close the Enclosure and Done. ...

Part of a video titled How to Repair Rebuild a Home Theater Powered Sub for $15
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In this video I'm going to go over how to repair a home-theater subwoofer amp for about $15. So toMoreIn this video I'm going to go over how to repair a home-theater subwoofer amp for about $15. So to start with here's the original amp.

Full Answer

How do I tune a subwoofer AMP?

Tuning the amp is dependant on preference and the setup, so that is up to you to do correctly. But one thing that should not be done is to crank the Gain/volume knob on the amp all the way and assume thats the best method. Turn the Gain/volume knob to zero or all the way down. Play a song with a middle amount of bass. Not too heavy not too light.

Can you install an amp without sub woofer?

Subwoofers are designed to increase the bass frequencies, resulting in a deep, thumping sound. In most cases, they are paired with an amplifier to boost the sound. If you do not have the funds for both components, you can still hook up a subwoofer without an amplifier; it simply involves a little more know-how.

How to repair sub woofer?

  • Sound signals generated inside your computer are sent to the speaker port (usually green) on your computer.
  • You plug your speakers into that port, and the sound continues down the wire into the little amplifier built into the speakers.
  • The output of the amplifier is wired to the speakers.

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How to install a subwoofer and AMP in your car?

How to Install Subwoofers. Download Article. Explore this Article. parts. 1 Purchasing Wiring and Disconnecting the Battery. 2 Routing the Power Wire to the Engine. 3 Connecting the Subwoofers to the Stereo. 4 Securing the Ground Wire to Exposed Metal. 5 Wiring the Amplifier and Subwoofers.

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Can an amplifier be repaired?

Modern audio equipment is built using delicate components that cannot be repaired; instead, they are replaced. Your audio professional will know which ones to replace, where to get them, and how to do the job. Use a clean pencil eraser to clean cable pins on a regular basis.

How do you fix a subwoofer that stopped working?

If your sub stopped working in your car, the solution is sometimes just four simple steps....Solutions for Fixing Your Not Working Car SubwooferCheck the Speaker Wires. ... Check the Fuse and Outlets. ... Check the System and Its Settings. ... Reset the Volume and Switch on the Sub.

What causes a subwoofer to not turn on?

If the subwoofer still doesn't power on, try plugging it into a different outlet that you know works properly. As with the speaker wires, inspect the subwoofer's power cable for any damage or defects. Some subwoofers are equipped with a fuse, which may or may not require removal of a back plate.

How do you fix a blown amp?

0:2318:28Simple fix for a blown audio power amplifier - Save your $$$! - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo reset the circuit breaker plug it into a new outlet. And if it keeps tripping. And you might haveMoreSo reset the circuit breaker plug it into a new outlet. And if it keeps tripping. And you might have a problem. But that could be the issue right there. The other option is that the internal fuse.

How do I know if my sub amp is blown?

0:292:21How to Troubleshoot Dead Sub Amplifier | Car Audio - YouTubeYouTubeStart of suggested clipEnd of suggested clipYou can usually tell if it's blown because the piece in the middle is gonna be split apart if thisMoreYou can usually tell if it's blown because the piece in the middle is gonna be split apart if this fuse is blown it means either there's a problem back by the amplifier.

Can subwoofer 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.

Why is my amp not working?

To diagnose a blown car amp fuse, replace the fuse with everything turned off. If the fuse blows, there's probably a short between that fuse and the rest of the system. Next, replace the fuse again with the amplifier disconnected. If the fuse still blows, there is a short somewhere in the wiring.

How do you diagnose amplifier problems?

Test the sound by unplugging the sound cables or colored RCA wires.Hissing and crackling are often easy to fix by rearranging the wires or getting complimentary speakers.If the noise doesn't stop, then you probably have a faulty amp to replace.

How do you service an amplifier?

1:114:08Amplifier Service & Maintenance | LECTRICare® Music ElectronicsYouTubeStart of suggested clipEnd of suggested clipRemove applicator tube and lightly coat all circuitry to protect against harmful environmental.MoreRemove applicator tube and lightly coat all circuitry to protect against harmful environmental. Threats. Wipe off excess remove tubes always wearing gloves to keep finger oil from getting onto. Tubes.

How do you test an amplifier?

How To Test An AmplifierAttach the wires for power (red) and ground (black). ... Touching the amplifier's electricity wire to the car's battery positive post and the ground to the negative battery post is one of the easiest things. ... Link the amplifier with a mic. ... Check all accessible fuses and use one fuse in the amplifier.More items...

Why did my bass stop working?

The output jack connection (where you plug the lead into the bass) is notorious for coming loose. This could mean you hear nothing or you may occasionally hear something but it keeps cutting in and out. Whilst the cable is plugged in and the amp is on. Try moving the cable jack around inside the guitar.

How do you test if my subwoofer is working?

0:462:49How To Test A Subwoofer To See If It Works A Quick Test - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnd I can hear the vibrations. Right here so that is a quick test if you do not have your tunerMoreAnd I can hear the vibrations. Right 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.

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 to do if your subwoofer doesn't turn on?

If the subwoofer still doesn't power on, try plugging it into a different outlet that you know works properly . As with the speaker wires, inspect the subwoofer's power cable for any damage or defects. Some subwoofers are equipped with a fuse, which may or may not require removal of a back plate.

What to do if your subwoofer is not lit?

If it's not lit, check that the subwoofer is securely plugged into a wall socket, surge protector, or power strip. If a plug's prongs slip out halfway—it's often enough to prevent the flow of power— gently bend them so the cable will stay connected after you let go.

How to check if subwoofer is working?

Check the volume level on the subwoofer and receiver or amplifier before sending any audio input. Start the volume low and gradually increase it to determine if the subwoofer is working correctly . Choose music test tracks that feature low-end bass content so there is no question one way or another.

How to make sure subwoofer doesn't receive signal?

If the input device offers speaker size settings, choose the smallest option first; sometimes setting the speaker size to something larger makes it so that the subwoofer doesn't receive a signal.

Where is the input on a subwoofer?

The inputs on the back of the subwoofer generally plug into the subwoofer output on the back of receivers or amplifiers. If the subwoofer connects to speaker outputs on the receiver or amplifier, inspect the entire length of wire connections for defects.

Do subwoofers need a fuse?

Some subwoofers are equipped with a fuse, which may or may not require removal of a back plate. If the fuse is a feature, and if you're comfortable tinkering with electronics, check to see if it needs replacing. Otherwise, consult the manufacturer or local repair shop first. Check system and menu settings.

What is a subwoofer?

From Wikipedia: A subwoofer (or sub) is a woofer, or a complete loudspeaker, which is dedicated to the reproduction of low-pitched audio frequencies known as bass.

What is a passive subwoofer?

Passive subwoofers have a subwoofer driver and enclosure and they are powered by an external amplifier. Active subwoofers include a built-in amplifier. The first subwoofers were developed in the 1960s to add bass response to home stereo systems.

When did subwoofers become popular?

During the 1990s, subwoofers also became increasingly popular in home stereo systems, custom car audio installations, and in PA systems. By the 2000s, subwoofers became almost universal in sound reinforcement systems in nightclubs and concert venues.

How to clean an amplifier?

If you need to open up the amplifier for cleaning or to replace a fuse or electrical cord , here’s what you’ll need: 1 Phillips screwdrivers 2 Soldering iron and solder 3 Electrical contact cleaner spray or can of compressed air

What is an amplifier?

An amplifier is an electronic device that magnifies and controls audio signal sources from a built-in AM-FM receiver as well as an external CD player, tape player, or other audio home-entertainment device. The output signal is fed to audio speakers.

Why is my receiver not working?

One of the most common causes of receiver problems is oxidation of electrical contacts and jacks. A jack is the connector used to mate a wire or plug to a circuit. A jack or plug that has gunk on it won’t conduct electricity, so the next device in line doesn’t get the signal.

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