How to Install a Capacitor to an Amp

How to Install a Capacitor to an Amp
4 min read


- The purpose of the Power Capacitor

A capacitor is a storage for electric voltage or power. That's why they're often known as power capacitors, or simply power caps. Additionally, they serve as a reliable method to accomplish the decoupling task that is intended to lower the noise level of the power supply. This is why they are commonly used in audio equipment or accessories, such as an amplifier.

- Why use capacitors in Amp Circuits?

Within an amp circuit diagram, it is evident that a power cap serves the power storage role in general, just like it does in a different circuit. It is superior to lead-acid batteries because of its low resistance inside that permits the battery to be charged and supply energy at a fast speed. In a car stereo system which is thought to have power-hungry components, there will be a significant amount of demand for current is expected in addition to if you're heavy metal or hard-rock music lover, instruments such as bass and drums can increase the usual demand in a flash.

When is it time to replace the Capacitor in Amp Circuits?

Insofar as the power capacitor is involved, it's rarely the case that something is wrong when a capacitor is qualified. The electrolytic capacitors can decline as time passes. In reality, it can take more than ten years to develop, and that's much longer than what most people are likely to own an amp. The power cap may be required to be replaced if you discover that your audio device struggles to function normally (i.e. an audible buzz or hum coming emanating from your amp).

According to some audiophiles, the power capacitor isn't essential. They'd rather have the huge three upgrade that involves the amp and the cycle battery.

install capacitor to an Amp

How do you connect an Amp to a Capacitor?

Let's now take the car audio system as an example of exactly how to connect an amp with a capacitor.

Materials and Tools You will require

  • Capacitor(s)

Easybom Easybomwould suggests a 1-watt resistor to charge the capacitor. A lower-watt resistor could be too hot to handle. It is also possible to use the test light bulb, which is a traditional method.

  • Wire

Make sure to use the same size of the circuit the capacitor is meant to be placed on.

  • Wire stripping tool
  • Adhesive eyelet connectors that heat shrink
  • Heat shrink connector butt for terminals
  • Wrenches
  • Memory saver

Step by Step Instructions

Step 1. The capacitor must be discharged to be utilized. Place your car in a dry and quiet area where you aren't interrupted by other drivers. Connect the ground terminal of the battery.

Step 2: Disconnect the fuse and replace it with a resistor. Set up the memory save. Follow your instructions from the manufacturer for the device.

Step 3: Unplug the battery cable from its negative end.

Step 4: Locate which power supply circuit you are in. This is the place you'll need to replace or place the capacitor.

Step 5: Use the wire stripping tool to cut the positive feed wire into the circuit. Trim off the insulation at both ends of the wire that you just cut.


Step 6: Put an eyelet to one of the wire ends.

Step 7: Connect the feeding wire on the positive terminal of the capacitor that powers it.

Step 8: Put the capacitor as you can as possible to the amp to minimize the noise. This is also a requirement of the instructions of the manufacturer.

Step 9: Complete the remaining section of wire as per this diagram. Be sure to use a wrench to secure each terminal nut.

How to Install a Capacitor to an Amp

Step 10: Ground the wire, then connect the negative battery cable.

Step 11: Remove your memory saver.

Step 12: Turn on your vehicle and the capacitor should be charged, and you will be ready to go.


Be sure to remove the capacitor before performing any other procedures. Also, seek help from an experienced mechanic if uncertain about the issue.

In case you have found a mistake in the text, please send a message to the author by selecting the mistake and pressing Ctrl-Enter.
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