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KICKER 48TRTP122 12" Thin Down-Firing Subwoofer w/Passive Radiator Enclosure, 2-Ohm

  • Based on 372 reviews
Condition: New
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Arrives Monday, Mar 9
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Product grade: New


Features

  • Extremely Compact Design with Drivers Hidden, Becoming a Part of the Vehicles Makeup
  • New CompRT Features Forced-Air Cooling - 20% Cooler for Increased Reliability
  • High-Output ReFLEX Passive Woofer Intensifies Bass Output
  • Internally Braced Enclosure Provides Ultimate Protection
  • Easily Mounts in Cargo Area, with No Space Issues

Specs & Other Info

SpecificationDetails
BrandKICKER
Model48TRTP122
TypeSubwoofer
ConnectivityCoaxial
Unique FeatureBass Boost Technology
Dimensions27.5 x 14.63 x 6.13 inches
Weight31 lbs
Model NumberTRTP122 (48TRTP122)
Current StatusContinuing
Release DateNovember 13, 2020
Produced byKicker
Max Output1000 Watts
Quantity Included1

Frequently asked questions

The KICKER 48TRTP122, with its 12-inch thin down-firing design, is versatile enough to fit in a variety of vehicles, from compact cars to larger SUVs and trucks. Its compact size makes it ideal for fitting under seats or in tight spaces where traditional subwoofers might not fit.

Yes, the KICKER 48TRTP122 can be used with a variety of amplifiers, but it's best matched with an amplifier that supports a 2-Ohm load. Ensure your amplifier can handle the subwoofer's power requirements for optimal performance.

The passive radiator in the KICKER 48TRTP122 helps enhance bass response without the need for additional air space or a larger enclosure. It allows the subwoofer to produce deeper, more powerful bass compared to traditional sealed or ported boxes in a compact form factor.

Installing the KICKER 48TRTP122 involves connecting it to your vehicle's audio system's amplifier, ensuring proper wiring for the 2-Ohm impedance, and securely mounting the enclosure to prevent movement. It's recommended to follow the manufacturer's instructions or consult a professional installer for the best results.

Top Amazon Reviews

🚀 Abunda's Overview

This is our summary and key points to consider based on customer reviews.


The product demonstrates strong performance over time, with many users stating that it continues to function at high quality after their ‘break-in’ period. Versatility is another key advantage; the product can cater to a variety of vehicles, no matter the size. That said, one user did mention their disappointment with the sub's low end bass capacity.

Pros

  • 🌟 High durability: users seem happy with the product's performance over time
  • 🚗 Versatility: Fits well in many different vehicles, including small cars and trucks
  • 🔊 Sound quality: Most users praised the sound quality—especially the deep bass
  • 💼 Space saving: Great for people who need their trunk to still be usable

Cons

  • 🔈 Low end bass: Disappointment reported by one user about the bass
  • 🚫 Defects: A user received a defective product but did not specify what was wrong

Should I Buy It?

Yes. Despite a couple of minor issues, the vast majority of users praised the product for its versatility, durability, and quality of sound. It's well-suited to anyone in need of a space-saving subwoofer solution.


  • I love it!
I love it! Not earth shattering but it does shake my mirrors. Good, loud, clean bass that does stand out. Really good for shallow mount. Running ALPINE S-A60 monoblock at 400w or 600w (I forget) 2ohms. Doesn't rattle one bit. If you get any rattling it's not the sub. Check for loose things in the car and adjust your acoustic treatment. Treatment really does make a huge difference. Also, I sat the unit on top of some small pieces of 3 inch thick acoustic foam. Not only did that stop the rattling but the extra height between the cone and cargo bay floor in my SUV gives this the perfect amount of room to breathe and I get a much deeper, richer bass as a result. ... show more
Reviewed in the United States on August 28, 2025 by Patrice Perez

  • Finally makes a "premium" audio system sound premium.
I recently bought a 2023 Mazda 3 hatchback and specifically paid extra to get the trim level with the "premium" Bose audio system, but I was immediately let down by the bass. The little 4" Bose subwoofer just wasn't cutting it, even with the bass EQ turned to +10 and treble turned to -10. I have it powered by a Kicker Key 500.1 monoamp, which is being fed the signal that originally went to the Bose subwoofer. And let me say, it is PERFECT now. I have the bass and treble EQs back to 0 and it all hits exactly like it should. It doesn't shake the mirrors or body panels off, but it could totally get it to rattle if you really wanted it to and you tuned your amp right. I love that it fits the back of my Mazda so perfectly and I can throw stuff on top of it. To hold it in place, I've actually just screwed some square pieces of ABS plastic into the "feet" of the enclosure, which I've stuck some velcro onto. And then I have the opposite side stuck onto the trunk liner I have back there, and that holds it in place perfectly. ... show more
Reviewed in the United States on May 4, 2024 by Amazon Customer Amazon Customer

  • True BANG for the buck
This bass box is magnificent. Sound quality is fierce and the design is perfect for small enclosures. The passive radiator makes all the difference in getting those low frequencies. I had a 12” Memphis Audio sub in a non ported box and this one sounds way way better and has a smaller footprint. Best money ever spent for this unit. ... show more
Reviewed in the United States on July 17, 2025 by Edward L

  • Very good
Clear crisp BASS
Reviewed in the United States on December 27, 2025 by Michael

  • Less than 2 months and already blown
Have had it for a couple months hooked up to 500 w rockville with matching ohm..... 2 weeks ago started sounding funny now sounds like a blown speaker. This was my first speaker based on recommendations from Friends on a kicker and I am not very impressed my Rockville is still sounding really really good. ... show more
Reviewed in the United States on June 6, 2025 by candie christine manson

  • So good
Amazing sound, they put out a lot of base !
Reviewed in the United States on March 2, 2026 by Dakota

  • Clear Quality Bass
I started off with a 15-inch ported subwoofer from Skar Audio but it took up too much room so I needed to replace it eventually. So I bought this kicker subwoofer to still get my bass fix. Right away I noticed I needed to tune my equalizers, crossovers, and timings as it wasn't really blending that well with my 500w 6.5" front speakers. I spent about a week tweaking it while I went to work until I finally hit the sweet spot for my crossovers. I let my front speakers cut off at around 65-70hz and the subwoofer do all the work from 32hz to 63hz. It's recommended that the packaged is tuned to 35hz for clarity sake. My old ported box had some like 25hz tuning. Anyways, I noticed I was missing that deep bass that my old subwoofer would give me. Of course, that's the trade off for going with a smaller box and one that was closed for space convenience. Once everything was setup, it took me awhile to adjust to the sound clarity of an enclosed subwoofer. Kick drums are so responsive and clear that it made my tweeter sound a bit harsher. So My old spl set up used to round out those high frequencies. Now those high frequencies are more pronounced so I had to adjust them to be a bit lower and cut down on some of the higher frequencies on my equalizers. That seem to do the job and my music sounds so much more natural and super clear! I am starting to hear things in music I never heard before. Quite impressive. This subwoofer really does its best to emulate deep bass with great accuracy. 4/5 stars imo ... show more
Reviewed in the United States on March 27, 2024 by Sentarry

  • good for light use only
i brought this as a space saver sub i blew out with a 800 watt kicker amp. pros: great space saver good sound cons: cannot with hold amperage blows easily
Reviewed in the United States on December 19, 2025 by Rejelio Arnold

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