How to Adjust Car Amp for Best Sound?

I think you want to know how to adjust car amp for best sound?


You just purchased and fit the wicked new amplifier in the stereo system of your car. However, when you fired this up, this does not appear to do anything.

Do not rage at this time, and there is nothing incorrect with the brand-new amplifier, this is simply not appropriately tuned so far. You have to tune then adjust a vehicle amplifier to utilize the speakers of the car.

You have to do a little alteration until you obtain the best sound quality for the listening enjoyment. Do not worry, to turn a vehicle subwoofer or an amplifier is not as difficult as the sounds.  

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This Is the Terminology of an Amplifier of Car

You may experience a few technical terms in our article, therefore you must familiarize with them, therefore, you will not get lost. 


It is setting which adjusts the amplifier’s sensitivity, which means this sets power that comes out from the amplifier for a specific level which can be handled easily through the speakers. Only speaking, you should adjust its setting to decrease the distortion originating from speakers


The frequency is the pitch of sound which produces by the speakers. To find out the speakers’ frequency is very simple as they are normally clearly mentioned on the external casing of speakers.

If not, then you will be able to find frequency numbers at the backside of every speaker. You should find these numbers since you will require tuning an amplifier properly.

High-pass/Low-pass Filters     

These are fitted frequency filters that, as turned on will just let a minimum/maximum frequencies range pass by output jacks. Such as, if you utilize little speakers, similar to the tweeters, for handling high-frequencies, you should turn HPF on relating output channels.

Additionally, if you utilize every medium-sized speaker without subwoofers and tweeter, you should adjust the filter to the “full”, which means output channels let out the full frequencies range (highs, mids, and lows). 

Step By Step Instructions to Tune an Amplifier

First step – Gain Control and Volume Adjustments 

You should turn off everything, unplug RCA wires attached to the amplifier, and then turn on your stereo system again. Without music playing, increase volume on the head unit as far as the way up, take note the displayed number on the head unit. 

At this time you know the highest volume of the system this down to approximately 80%, and afterwards set equalizer settings of the stereo to “Flat”. Return to the amplifier and adjust the Bass and Gain Boost to the zero and adjust its crossover filter to the full/off.

Then plug back the entirety of RCA wires into speaker channels which you desire to tune. Now, you play your desired song on the radio and gradually enhance its gain setting until hearing a little distortion originating from your speakers.

Gradually decrease its gain until don’t hear distortion, it will be setting of base gain which you will utilize to tune various frequencies. 

Second step – tuning the frequencies individually

Now you have the settings of base gain, it is an ideal opportunity to switch crossovers plus filter back on. Additionally, if you want to tune the sub-woofer, pick a low-pass filter, and utilize high-pass filter for further speakers. 

If you want to utilize medium-sized speakers for covering every frequency (which means you do not have the sub-woofer box fitted) you should dismiss this step as well as simply leave the filters and crossover on the full or off position.  

If you want to tune the sub-woofers, then check the greatest rating of the sub-woofer then adjust frequency dial to a similar number. Alternatively, if you want to tune the rest of the speaker system, try to discover out the lower frequency and adjust the setting according to the number. 

Third Step – Bringing Bass     

If you like the window-rattling bass and chest-thumping coming from the sound system of the car then you have to increase the setting of a bass boost of the amplifier. It can be very tricky and place a ton of stress on the sub-woofer. 

For turning up its bass boost, then you have to adjust gain down. And you have to adjust 2 settings simultaneously, here is a goal to get the maximum bass output with no getting distortion. It may take some time since you need to adjust 2 settings simultaneously, however, do not worry, this will all value at long last.        

Forth step – Back to Gains

Now the entirety of speaker bass and frequencies boost are set up, then you can return for setting the gain. For turning on the radio plus adjust volume back to the 80 per cent of highest, and turn to gain up gradually until you listen to the distortion originating from speakers and slowly dial down its settings until distortion depart.

Fifth step – fine-tuning

Reconnect every amplifier and afterwards turn the volume of stereo right down to the zero. At this time slowly increase its volume until you arrive at 80% score or until listening to the distortion.

If everything you turned properly, you will be able to hit 80 percent volume with no listen to any distortion at all. Alternately, you listen to any distortion and find out that which kind of speakers are culprits and turn down the settings of gain until do not distort anymore. 

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