Best SPL Subwoofer

The increased fierce competition is the fuel that drives innovation forward. Many of our modern technologies stemmed from competition.  In this way, car audio sound off competition drives innovation of new products including subwoofers, speakers, amps, capacitors, alternator power… Everything down to wires. Without dedication and competition, this industry wouldn’t be what it is today.

We’ve had a ton of requests to start including competition subwoofers in our reviews. We’ve done a few. We feel we have left out some of the best spl subwoofers and brands, and well, we would like to redeem that.

Best SPL Subwoofers Reviews

Are you on the lookout for the best SPL subwoofer? Well, you’ve come to the right place. We’ve got you covered with the best SPL subwoofers that can truly vibrate the soul of anyone who dares to sit inside the vehicle where these subs are mounted. Mount these speakers in your vehicle, and you’ll be heard miles away.

DS18 TM-SN18 Troublemaker SPL Competition Subwoofer

DS18 TM-SN18 ReviewThe TM-SN18 Troublemaker. Its name says it all; It’s the strongest, most badass, crazy SPL subwoofer on the market. And, assuming you’ve got enough dollars to throw around, the TM-SN18 is one of the best SPL subwoofers you can buy, all things considered.

DS18 is a brand that we haven’t discussed much on our site. While they’re a newcomer to the car audio industry, they have grown quite quickly over the past few years and have made a name for themselves in this industry. DS18 offers some of the best competition car subwoofers out there.

DS18 TM-SN18 ReviewDS18 has multiple different lines of subwoofers. So, whether you’re into SPL competition or not, DS18 subwoofers are a good choice. If I had to pick some criticisms for DS18 subs, it would be just the price. These subwoofers – particularly the Troublemaker series subs – are very expensive. If you want to go balls-to-the-wall and buy one of these bass machines, you’ll be looking at $500-$1700 price tag. However, you’ll be getting a very well-engineered subwoofer that’s designed from the ground up with quality in mind.

The TM-SN18 is one of the best SPL subwoofers that DS18 has to offer. This 18″ inch subwoofer is a beast. It can handle up to 5,000 watts on continuous basis which is quite impressive. It’s rated for 93 dB sensitivity rating.

Sundown Audio Z-15 V.4 D2 Subwoofer Review

Sundown Audio Z-15 V.4 ReviewThe fourth generation Z series woofers are the product of several years of SPL competition experience, innovation and efforts trying to come up with an exceptional combination of low distortion (aka noise) and high sound pressure level output at a reasonable price.

So, if your budget can’t stretch to the DS18 TM-SN18 competition subwoofer, the Z-15 V.4 by Sundown Audio is a great reasonably priced alternative. It costs more than half TM-SN18′ price.

The Z-15 V.4 is 15″ subwoofer rated for 2,000 RMS. It features a 3″ diameter eight layer flat aluminum coil wound on spiral cut black anodized aluminum former. you’ll also find Sundown Audio’ new spider, surround, and cone platform in use in these subs. It also features a large internal magnet shorting ring for reduced inductive distortion. It has a stiffer suspension.


Whether you’re trying to overfill your vehicle with bass or you’re building the perfect stereo system that produces high quality music, there is the right setup for you. You may be aware of “SQ” or “SPL” terms. Understanding these common buzzwords will greatly help you decide on what kind of sound you are seeking. So, What’s the difference between SQ and SPL? Read on to find out.

SPL (Sound Pressure Level)

It refers to sound pressure level (the boom in subwoofer), which basically means how loud a subwoofer can play. In regards to subwoofers,  ported enclosures are usually favorable for SPL setups, simply because ported enclosures give you boomier and louder bass. This is due mainly to the ports pushing out more air and creating more pressure. Additionally, ported enclosures are generally more efficient in regard to the amplifier power necessary to make the subwoofers perform. Mounting your subwoofer(s) in a ported enclosure(s) allows you to use a smaller amplifier than you’d need with a comparable sealed enclosure.

Bigger subwoofers such as 15″, 18″ or multiple bigger subs are more common in SPL setups, as the more cone area the subwoofer has, the more air pressure it will produce. Sound Pressure Level is measured in decibels, which means, anyone can tell how loud your stereo system plays with an SPL meter.

In a perfect SPL setup, no part is neglected or omitted. Therefore, having high quality speakers is a must. Also, consider metal tweeters with bright highs to complement the booming, heavy bass that the subwoofers produce and to prevent the bass from draining out the high frequencies.

SQ (Sound Quality)

SQ stands for sound quality. It’s much more difficult (if not impossible) to measure than SPL. It simply means that the system has an excellent sound staging and impressive tonal or musical accuracy. In SQ applications, sealed enclosures are ideal for subwoofers as they allow for tighter and more accurate bass response.

Smaller subwoofers such as 10 and 12 inch are more commonly used for SQ applications. Sound quality can not really be measured. However, a good subwoofer should be able to produce +/- 3 dB. It boils down to personal preference for the most part. So, if you’re looking for a well-balanced, accurate sound and want to hear the music as it was intended, go SQ.

Car Subwoofers – SPL or SQ? : Settling the Debate

Now that we’ve talked about both SPL and SQ systems, and the difference between the two, it’s time to decide which one is better; they both clearly have their pros and cons – and there is always going to be haters on both sides of the fence but you are the only one who can decide what’s right for you.

So, what’s the best : SPL or SQ? well, this is not an easy question to answer, as everyone has different tastes and needs. Deciding between SPL and SQ is not an easy task because there are many variables to figure into the equation including vehicle type, enclosure, amplifier, subs …etc. So, keep in mind that one is not necessarily better than the other, and it really boils down to personal preference.

So is it useful to talk about SPL versus SQ subwoofers? Yes, I can’t stress enough how important sound quality is. Who doesn’t like clarity, accuracy and well-balanced sound? Your ears will easily get tired of listening to distorted music. So, whether you are into SPL or not, Sound Quality is definitely something to consider when you’re looking for a car subwoofer.