Tropo 8 Inch D4 (400W RMS) (Old Model - Used - Working)

$55.99 Regular price $79.99 Sale price

You Save 30% ($24.00)


The item was tested and it is working. There may be cosmetic damage, small scratches, dents, and/or damage to the gift box. If for some reason the item is not working, you have 30 days from the date of purchase to notify us. We will ask you to return the item (with the packaging received) back to us. Once we verify it is the item and it is not working, we will issue you a store credit only. If we discover the item is working, we will not issue a refund and will offer to return the item to your address at your cost. 

The Tropo 8 Inch D4 is our most versatile subwoofer and is affectionately called Kickass. It has 400 watts RMS and 800 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 8" D4 Car Subwoofer (Dual 4 ohm)


  1. It is a dual 4Ω (ohm) resistive (voice coil) subwoofer
  2. This is a 400W (RMS) subwoofer with maximum 800W power
  3. 2" (diameter) voice coil makes this subwoofer versatile irrespective of its size, dimensions and power consumption
  4. It incorporates with Y35 graded ferrite magnet, which is one of the kings in the magnet world! The magnet is inside a durable and sturdy and robust casing that is attached to the sub basket.
  5. Strong and sturdy basket frame capable of handling high-powered audio-frequency production without any harm to the product!


Product Manual


Technical Specifications:

  1. Sub power: 400W (RMS) | 800W (MAX) 
  2. Subwoofer size: 8"
  3. Subwoofer type/ impedance: Dual 4 ohm
  4. Voice coil (diameter): 2" (50.4mm)
  5. FS: 50.205Hz
  6. QTS: 0.629
  7. QES: 0.762
  8. QMS: 3.582
  9. VAS: 6.598 liters
  10. SPL: 82.3 dB (@1w/1m)

Box Specifications:

  1. Sealed: 0.30 ft3
  2. Ported: 0.35 ~ 0.70 ft3

Mounting / Installation Parameters:

  1. Cutout diameter: 183mm / 7.2"
  2. Overall diameter: 213mm / 8.4"
  3. Mounting depth: 120mm/ 4.7"



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