$125.99 $144.99

The Tropo 15 Inch D4 is our most versatile subwoofer and is affectionately called Kickass. It has 600 watts RMS and 1200 watts MAX power that offers a significant performance advantage over the same size Bio Subwoofer. With a more potent motor, bigger voice coils, and optimized suspension, the Tropo series has become the SQ oriented driver within CT Sounds lineup and does so without sacrificing sub-bass output. It features a 4-layer copper Dual 4 Ohm voice coil. The cone is made of polypropylene composite paper, reinforced with 3% carbon fiber. The motor is a double-stacked Y30 ferrite magnet that offers tremendous motor force and weighs 91% more than the same size Bio Subwoofer. It is an excellent choice for all applications without breaking the bank. Your friends will be impressed and will be blown away with the performance at its price point.


What's in the box:

  • 1 x Tropo 15" D4 Car Subwoofer (Dual 4 ohm)


  1. It is a dual 4Ω (ohm) resistive (voice coil) subwoofer
  2. This subwoofer takes 600 (RMS) power with 1200W maximum power capacity
  3. Nice 2.5" (diameter) voice coil makes this sub truly versatile & powerful
  4. Incorporates Y35 graded double stacked ferrite magnet
  5. The sub has got strong, sturdy and stupendous basket frame
  6. SPL grade/ Competition Graded subwoofer for car audio


Product Manual


Technical Specifications:

  1. Sub power: 600W (RMS) | 1200W (MAX) 
  2. Subwoofer size: 15”
  3. Subwoofer type/ impedance: Dual 4 ohm
  4. Voice coil (diameter): 2.5" (63.5mm)
  5. FS: 36.058
  6. QTS: 0.656
  7. QES: 0.801
  8. QMS: 3.622
  9. VAS: 82.375 liters
  10. SPL: 88.7 dB (@1w/1m)
  11. Xmax: 12.5mm (Single way)
  12. Speaker connector: 12 Gauge
  13. Displacement: 0.15 ft3

Box Specifications:

  1. Sealed: 2.50 ft3
  2. Ported: 3.00~4.00 ft3

Mounting / Installation Parameters:

  1. Cutout diameter: 361mm / 14.2"
  2. Overall diameter: 391mm / 15.4"
  3. Mounting depth: 188mm / 7.4"



Customer Reviews

Based on 7 reviews
The best subs for the price !!!

Recently I purchased a pair of Tropo 15's for my Jeep Compass and couldn't be happier. The sound quality is amazing Thank You CT Sounds. Joe Pharris

Awsome subs !

Beautiful subs and great price cant go wrong !

Great Sub for the price

Subs are great for the price would recommend to anyone who wants a cheap but durable subwoofers. Running 2 dual 4 ohm parallel down to a one ohm load. Not the hardest hitting subwoofers I have ever had but for the price they are great.

Best budget 15 money can buy!

Had two

Best budget 15 money can buy!

Had two

Tropo 15 Inch D4 (600W RMS)
$125.99 $144.99

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