How to get deeper bass from subwoofer

Do you love to hear thrilling music? Want to add excitement and fun to your listening experience? Then it would be best if you had a deeper bass. If you want a bass that sounds deep, bass that shakes windows and wants window flex in your car, then you must know how to get deeper bass from a subwoofer.

There are different methods to achieve deeper bass; let’s check out all the ways and see which one works for you.

Subwoofer Selection

To achieve deep bass that vibrates your car to bits, you need a subwoofer with a large cone area. It is because the more significant the cone, the more air the subwoofer car pushes in your vehicle to make things vibrate and shake. The more cone area the subwoofer has, the deeper the bass will sound and feel. 

So if you are going for deep bass and have plenty of free space in the car, I would strongly recommend you to get a 12, 15, or even 18-inch subwoofer, as they move more air if compared to an 8 or 10-inch sub that has a smaller cone area.

As well as cone area, you must understand that the more subwoofers you have and the more air will drive in your car. The more subwoofers you have, the more air your vehicle will move. If you use only one subwoofer and have space for a couple more, then build a new ported enclosure that is tuned low, I say about 30Hz because having multiple subs in a soft tuned box means double or triple the cone area of having one subwoofer. 

Check Your Bass and Treble Tone Controls First

Before you spend any money on improving your bass, it’s essential to make sure that something much simpler is going on with your car radio. For instance, it’s always possible to change the tone control settings without your knowledge. If you feel like your car stereo used to have more bass than it does now, it’s likely that you changed these settings.

Tone controls may take the form of physical nobs or sliders on your car radio, or you may have to access a menu to find them. When all else fails, break out your owner’s manual.

If you find that the treble has been turned way up or the bass has been turned way down, adjusting them may yield results that satisfy your ear. In some cases, changing the fade to favor the rear speakers may also help, as they often have more enormous speaker cones. However, simply cranking up your bass tone control can only do so much without a subwoofer.

Tuning the Music System

While adding a subwoofer and an amp is instrumental in getting great bass in any car audio system, installing the components is only the first step in a longer process. That means if you already have a sub in your car, but you feel like your bass doesn’t sound that great, you can probably tweak things so that they say a lot better.

The main issue is that if you just stick a subwoofer into your car audio system without then tuning the system, you’re pretty likely to end up with distortion and muddy sound. If you take some time to adjust the system, the bass will usually sound a lot better.

The basic steps in tuning a car audio system with a subwoofer amp are:

  • Turn the subwoofer amp gain down, turn the low-pass filter up, and turn the bass boost off.
  • Turn the head unit on and set all the tone controls to their middle settings.
  • Play a piece of music you are familiar with, including high, mid-range, and shallow notes.
  • Adjust the volume on the head unit to between 25 and 75 percent of max.
  • Slowly turn up the gain on the amplifier until you hear clipping.
  • Back off the gain until the distortion goes away.
  • Slowly lower the low-pass filter until you can no longer hear any mid-and high-frequency sounds, like those from guitars and vocals, coming from the subwoofer.
  • If your amplifier has a bass boost function, and you aren’t satisfied with the level of bass at this point, go through the entire process again, from step one, with bass boost enabled.

While tuning your subwoofer amp can be instrumental in getting the best bass response possible, it’s important to note that if your audio system has any other amps, they need to be tuned separately.

Subwoofer Enclosures and Locations

In addition to properly tuning and adjusting your subwoofer amp, a few other factors can affect the quality of the bass in your sound system. For instance, moving a sub around inside your vehicle, or even turning it around, can have a considerable effect.

In some cases, you will even find that reversing the polarity of the subwoofer speaker wires results in an improvement. It means just swapping the cables’ position that connects the amp to the sub. However, you will have to re-tune the system after switching like that.

If you still aren’t satisfied with the quality of the bass in your car, then the only options left are to have a professional tune it or to upgrade to a more powerful amp and subwoofer or subwoofers. Taking it to a professional is a good idea if you aren’t comfortable with the tuning process since they will have the expertise and tools to do the job right.

Different Types of Enclosures

The type of enclosure depends on how the bass will sound and feel. There are two main types of enclosure bass boxes designs. 

Sealed type – The first one is a sealed box, it is airtight, that has no air leaks, that delivers a tight, accurate, and clean sound, as they create a proper bass response, creating a flat frequency response curve, which sucks if you’re looking after low, ground-pounding sounding and shaking bass. 

Vented type – The second one is a ported, also known as a vented type of speaker box, which has a port or a vent tuned to a specific frequency to increase spl and response in the frequency the port/vent is tuned to. Most people want to set car alarms off in parking lots and tune the port inside the box reasonably low, around 28-30 Hz, which is the advantage you gain from a sealed container. If you look at low-end bass, the lower you adjust your box, the more bass will get deeper; however, it will suck on the high notes.

Install a powered subwoofer that has speaker-level inputs

Assuming you don’t already have a car radio, or head unit, with line-level outputs, the cheapest, most straightforward way to improve the bass in your car is to install a powered subwoofer that has speaker-level inputs.

The difference between line-level and speaker-level is that the signal provided by speaker-level outputs has already been amplified by circuitry in the head unit. If you pass that signal through a regular external amplifier, you’ll introduce a bunch of distortion, and your bass definitely won’t sound good at all.

When an external amplifier has speaker-level inputs, you don’t have to worry as much about that distortion. Buying one of these units can also be less expensive than purchasing a separate amp and subwoofer, and they are also pretty easy to install.

Frequently Asked Questions

What Hz is deep bass?

It is good to know in which range we get deep bass. So it is said bass below 40 Hz gave deeper bass. This range is tough to reproduce at a level you can hear with acceptably low distortion. An upright bass with an extension goes down to C1 (32.7Hz). The lowest note on a piano is A0 (27.5 Hz).

How do I make my bass deeper?

For deep bass, you’re going to want to use a low-pass filter to cut out the higher frequencies of the bass notes and then shape it with the filter and amplitude envelopes. Using the low-pass filter cutoff, we cut the higher frequencies out. Next, I played with the filter resonance to add depth and colour.

Can You Get Better Bass in a Car Without an Amp or Subwoofer?

The truth is that you’re not going to get outstanding bass in a sound system that doesn’t include both a subwoofer and an amplifier. The issue is that even excellent car speakers aren’t big enough, and built-in car stereo amps aren’t powerful enough to reproduce deep, distortion-free bass.

Are Dedicated Subwoofer Amps Necessary for Good Bass?

While a powered sub can get the job done on a budget, finding a great amp, and pairing it with the right subwoofer, will typically yield even better results. 


The article explains the methods to get deeper bass from a subwoofer in a car, upgrading a better amplifier and subwoofer. And by adjusting the controls on your system for more balanced output.

It is up to you which method to use per your requirement and budget. If you don’t want to upgrade and replace the subwoofer of your music system, you will try other methods. Maybe these methods work for you.

Also, check out how to clean subwoofer boxes and cones; it might be helpful for you.

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