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How To Tune The Amplifier For Speaker And Subwoofer?

How To Tune The Amplifier For Speaker And Subwoofer?

People buy an amplifier to add power to speakers or their subwoofers. The most difficult task face by people is the tuning of amplifiers as you need to reach the full potential of amplifiers. People usually buy amplifier from car amplifier manufacturer directly, as they provide the amplifiers according to the need and it’s potential. There are some basic and common feature and functions which you need to know to understand the process of tuning amplifiers.

Some common terms:

Peak vs. RMS power:

Peak power and RMS power are very simple to understand. RMS power is a measure of the continuous power of the amplifier. This power is a realistic amount that the amplifier is rated for. It is more than the wattage output average over a set amount of time. Another term is peak power which is the amount of power emits by the amplifier continuously. These power ratings are marketed by speaker and amplifier manufacturers to attract customers.


The input sensitivity adjustment which is necessary is gain, used to match the input of the amplifier to the output of the receiver. An adjusted gain reduces background sound, distortion, and prevents the damage of the speaker.

Low-pass and high-pass filters:

The low-pass and high-pass are two filters of amplifiers that pass signals with lower and higher frequencies respectively than maximum and minimum frequencies certainly. If the amplifier is on a high-pass filter, then the corresponding frequency dial sets the minimum frequency that the amplifier sends to the connected subwoofers or speakers and vice versa.


Frequency is simply the pitch of the amplifier at which the speakers or subwoofers emit sound. You should know the range of them to properly tune your amplifier.

Steps to tune your amplifier:


You need to turn off the stereo first and disconnect the RCA cables use to run to amps. Then you need to turn on the system, turn on the volume of the receiver to the maximum without any music on them. Make sure that the speakers are disconnect before turning on the receiver to prevent speaker damages. After finding the maximum volume, set the volume at 80% and set the equalizer of the receiver to flat. Then turn the gain of the amplifier and bass boost to zero. Turn the amplifier’s crossover filters to full or off. Play the music and turn the gain up until you hear distortion in speakers, then adjust accordingly.

Step 2:

Now you need to focus on built-in cross overs and filters that are built into the amplifier. Select the low-pass filter for subwoofers and select the high-pass filter for speakers. Go for the full or off position if you use an amplifier to power mid-sized speakers, use to cover the full range of frequencies.

Step 3:

Bass boost is the best way to increase or adjust the loudness of bass. It is very tricky to use, otherwise, it’s very risky. Make sure that you turn the gain down when your bass boost turns up. Each speaker and subwoofers are different, so find the perfect combination of bass boost and gain.

Step 4:

The last step is to reconnect all the amplifiers ad turn your radio or receiver down to zero. Then gradually ramp the volume up until 80% or any distortion. Always remember that different genres of music may need different tuning to maximize speaker output.

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