🎵 Slim Fit, Big Bass — Own the Road’s Soundtrack!
The Alphasonik AS120A is a 12-inch down-firing subwoofer with a built-in 500W amplifier delivering up to 1500W peak power. Its slim, shallow mount sealed enclosure (21x7x14 inches) is designed for tight spaces in cars and trucks. Featuring a spun aluminum cone, rubber surround, and copper voice coil, it offers durable, high-quality sound. Customizable audio controls include a remote bass knob, low-pass crossover (50-200Hz), and bass boost up to +12dB, making it a versatile choice for enhancing mobile audio systems.






| ASIN | B0BWF766WN |
| Audio Driver Size | 12 Inches |
| Audio Driver Type | Dynamic Driver |
| Best Sellers Rank | #51,894 in Electronics ( See Top 100 in Electronics ) #148 in Car Component Subwoofers |
| Compatible Devices | Desktop, Laptop, MP3 Player, Projector, Smartphone, Tablet, Television |
| Control Method | Remote |
| Customer Package Type | Standard Packaging |
| Customer Reviews | 4.0 4.0 out of 5 stars (325) |
| Date First Available | February 21, 2023 |
| Global Trade Identification Number | 00810109980147 |
| Impedance | 4 Ohms |
| Included Components | 12" Active Down Fire Shallow Mount Enclosure, Mounting Brackets, Owner's Manual, Remote Bass Knob |
| Input Voltage | 12 Volts |
| Is Waterproof | False |
| Item Weight | 28 pounds |
| Item model number | AS120A |
| Manufacturer | Alphasonik |
| Material | MDF Wood |
| Model Name | Active Shallow Mount Down Fire Sealed Enclosure |
| Mounting Type | Flush Mount |
| Number Of Circuits | 1 |
| Number of Items | 1 |
| Number of Power Levels | 13 |
| Power Source | Corded Electric |
| Product Dimensions | 14"D x 21"W x 7"H |
| Recommended Uses For Product | For Mobile Audio |
| Signal-to-Noise Ratio | 90 dB |
| Speaker Size | 12 Inches |
| Speaker Type | Subwoofer |
| Special Feature | Remote Bass Knob |
| Style | 12 Inch 1500 Watt Active |
| Subwoofer Connectivity Technology | Wired |
| Subwoofer Diameter | 12 Inches |
| Surround Sound Channel Configuration | 1.0 |
| UPC | 810109980147 |
| Unit Count | 1.0 Count |
| Warranty Type | 1 Year Manufacturer |
| Water Resistance Level | Not Water Resistant |
| Woofer Diameter | 12 Inches |
D**E
Great results from a slim sub
I waited a year to write this review in order to be fair in my assessment and to also be able to speak to the durability of the product. I installed this sub in a Jeep Wrangler and powered it with a Rockford 5-channel amp that is also powering four 6.5s. I didn't want to take up a lot of space in the cargo area with a huge box and I really just wanted to round out the low end; I listen to a lot of classic rock and reggae so I was not looking to shake any windows since only about 10% of what I play falls within the rap or hip-hop genres. Initially, I was pretty underwhelmed with this sub - the first couple weeks gave me average performance at best and I did also experiment with some bass-heavy R&B just to see how it would perform. With the R&B, it produced a dull thud-like sound and with the classic rock, it really didn't sound very good when turned up loud enough to make a difference. But over the next month or so, it started to loosen up and sound more musical than noisy, and after about 3 months of moderate use, I became very happy with it. Again, I was not looking for club-quality bass, I just wanted to add some depth. That being said, it also performs very well now when I pop in some rap or hip-hop. Not a competition sub by any means, but I find myself needing to turn down the bass level for these genres. When the doors and top are off the Jeep, I'll adjust the bass knob a little higher and it is sounds great, even above the wind noise. My bottom line with this sub is that it is an excellent choice for anyone who wants to add nice tone to the lower end of the spectrum. It takes up a surprisingly small amount of space for a 10-inch, and i feel it is a bargain at this price point. The construction of the box itself is also very solid; it's had sports equipment, lawn supplies and such thrown on it, placed on it, been covered with it and a year later, it's no worse off than the day I got it. If you give it time to work itself in, you'll be happy.
I**A
Decent bass response!
Was able to fit this under the drivers seat of my 2016 Wrangler with a little bit of ingenuity. Sounds great for the price.
D**S
Looks and sounds great!
It was easy to connect, my car was prewired from a previous system, yet it went smoothly and sounds great, the low profile is perfect for my jeep and makes loading supplies much easier.
F**Z
Good but it got better!
This review is more so for the box. As my speaker arrived damaged. Bought this for use in my 2007 Mazda MX-5 Miata. Actually mine was a warehouse deal. Original box and hardware was there. The problem was the sub. It sounded okay at low volume but once I got 1/4 past volume, you could tell that something was wrong (more on that in a bit) Before I returned it. I had an idea.... So I put it on my bench. Removed the screws. Took the sub out. Box was pretty dirty inside but nothing a some compressed air couldn’t take care of. Examining the sub, it had a dragging sound when the cone was pushed. Chances are the previous owner blew the sub and returned it. Yeah..... but the box is what I really wanted. So I did some homework and put in a different woofer. Enter the kicker compRT. It fits nicely with room to spare! I also added some polyfil inside the box. Now this little 8 comes alive in the foot well. Keep in mind that even from the stock set up, this is not going to rattle windows or annoy neighbors. It does a good job of being small and filling in the low end void of dash/door speakers. Running this now at 2 ohms with a sound ordnance m350.1. Once gains and crossover were set, this box and sub combo is very tight and accurate. Box is small enough to fit in many applications.
I**N
Blew after a week and the smell bad
This speaker is supposed to be rated at 1500 watts. I have an amplifier that was dyno'd at 700 watts and it blew this sub in under a week. There's no way this is a 1500 watt speaker. Update: I got the blown speaker replaced and ordered a second one so they would be able to handle the power. Much better and they sound great. The bad: THESE ENCLOSURES SMELL SO BAD! They make my whole car smell like a fart combined with B.O. I've used TWO bottles of Fabreze on these enclosures and they still reek. I may have to replace the enclosures! Holy glob they smell bad!
R**O
Amazing Bass
Amazing Bass
C**H
Faulty product
I had horrible experiences with these subs. I was initially satisfied with my purchase but the sub blew after only about a week and I had to return it. I opted to just exchange it for a new one and the exchange was very quick, which I appreciated. When I got the replacement I took it to be installed, and have the amp tuned by a professional, thinking it was possible that I could have blown the first one myself by tuning it incorrectly. This one was blown straight out of the box. I was hopeful that this would be a good budget option, but I would bump up into the next price range if you’re looking for a decent, yet small and affordable sub. That’s what I will be doing.
R**Z
Nice tight bass for my non Bose 2019 Chevy Silverado
I like how compact and powerful this 10” powered subwoofer is . I felt that my non Bose stereo on my 2019 Chevy Silverado needed a little more bass and this helped it so much . Very happy with my purchase , well made and very easy install with the t harness and lots of YouTube videos on how to install. I recommend it to anyone who is looking for a nice powerful sub to enhance your stock stereo!!!
D**N
Really good crips sound. Packs a punch for sure. Deep bass The shop I had install the box was surprised at the sound for its size Definitely worth the money. I’d recommend 100%
T**E
For single sub actually has fairly decent sound
B**R
Bass is crisp and deep. Box is of solid construction however the both ends "legs" need to be extended. Have to turn the enclosure sub facing up as the cone was contacting the floor mat. Paired with a Kenwood 1000w amp and Clarion eq the sound quality is good overall. Not earth shattering deep but much better than what comes with the alpine system in ram trucks at least!
C**R
It did not perform at all like it was supose to it barely lasted a week on the recommended Amp wattage it said it wud handle
E**K
Bought it more for the box to mount a jl audio in it cause box fits behind the seat in my truck but sub that's in it ant to bad wouldnt compared it to alpine or anything but for the price it has some bump just don't over power it and give it time to breake it and it'll hit hard got a 400watt mono on it and it pushes it more then enough
Trustpilot
1 month ago
3 weeks ago