Flash Sale

TROPO-8 // 400 Watts RMS 8 Inch Car Subwoofer (Used - Working)

$55.29 Regular price $69.99 Sale price

You Save 21% ($14.70)

$69.99
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 The item was tested and 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.


Built to bring you the bass you need without breaking the bank you love, the CT Sounds Tropo 8 Inch 400W RMS Car Subwoofer allows you to peer into the atmospheric pressure CT Sounds subwoofers are capable of. Whether you want to fill in the lows in your stereo or drive the neighbors up a wall; the CT Sounds Tropo 8 is the perfect match.

The subwoofer features a 2 inch - 4 layer high-temperature copper voice coil, double slug Y30 grade optimized motor, stamped steel basket, flexible high foam surround, dual round weaved copper tinsel leads, and a premium grade spider pack. Boasting a conservative rating of 400 Watts RMS, this 8-inch subwoofer was engineered to be a harmonious combination of price and performance without a compromise on quality.

Looking to show your friends what real bass sounds like? You have come to the Troposphere; bass yourself seven miles up in the atmosphere with explosive sound pressure, the CT Sounds Tropo 8 Inch Subwoofer fills in the bass missing from your current stereo.

Quick Facts:
RMS Power: 400 Watts
MAX Power: 800 Watts
Voice Coil Configuration: Dual 2 Ohm
Push Terminal Size: 12 Gauge
  • 8 Inch Dual 2 Ohm Coil Configuration
  • RMS Power: 400 Watts
  • MAX Power: 800 Watts
  • 2 Inch - 4 Layer High-Temperature Copper Voice Coil
  • Y30 Graded Double Stacked Ferrite Magnet
  • Flexible High Foam Surround
  • Composite Paper with 3% Carbon Fiber Reinforcement
  • Signature Chrome Plated Low Carbon Iron Bottom Plate
  • Advanced Air Cooling System
  • Dual Round Weaved Copper Tinsel Leads
  • 12 Gauge Push Terminals
  • Fs: 45.02 Hz
  • Qms: 3.37
  • Qes: 0.53
  • Qts: 0.46
  • Vas: 6.96 L
  • Cms: 0.138 mm/N
  • Mms: 90.46 gr
  • Sd: 188.69 cm²
  • Re: 4
  • Le: 3.761
  • BI: 13.89 n/a
  • Sensitivity: 84.7 dB
  • Xmax: 9mm (one-way)
Subwoofer Measurements:
Cutout diameter 7.2"
Overall diameter 8.46"
Mounting depth 4.8"
Box Specifications:
Port Area 12 in2
Displacement 0.07 ft3
Flat Response Curve (SQ):
Sealed 0.3 ft3
Ported 0.4 ft3
Tuning Frequency 38 Hz
Boomer Response Curve (SPL):
Sealed  -
Ported 0.7 ft3
Tuning Frequency 42 Hz

*Flat response curve (SQ) is geared towards people looking for responsiveness. This style box is loud on all frequencies, generates little impedance loss, and can utilize an amplifier rated at the same RMS as the subwoofer.

*Boomer response curve (SPL) is geared towards people looking for maximum loudness. This style box will be louder than the flat response curve at some frequencies, has a high impedance rise, and can utilize an amplifier rated at a slightly higher RMS than the subwoofer.

*Enclosure recommendations do not account for subwoofer, bracing, and port displacement.

Subwoofer Quantity     
Voice Coil Impedance  

Built to bring you the bass you need without breaking the bank you love, the CT Sounds Tropo 8 Inch 400W RMS Car Subwoofer allows you to peer into the atmospheric pressure CT Sounds subwoofers are capable of. Whether you want to fill in the lows in your stereo or drive the neighbors up a wall; the CT Sounds Tropo 8 is the perfect match.

The subwoofer features a 2 inch - 4 layer high-temperature copper voice coil, double slug Y30 grade optimized motor, stamped steel basket, flexible high foam surround, dual round weaved copper tinsel leads, and a premium grade spider pack. Boasting a conservative rating of 400 Watts RMS, this 8-inch subwoofer was engineered to be a harmonious combination of price and performance without a compromise on quality.

Looking to show your friends what real bass sounds like? You have come to the Troposphere; bass yourself seven miles up in the atmosphere with explosive sound pressure, the CT Sounds Tropo 8 Inch Subwoofer fills in the bass missing from your current stereo.

Quick Facts:
RMS Power: 400 Watts
MAX Power: 800 Watts
Voice Coil Configuration: Dual 4 Ohm
Push Terminal Size: 12 Gauge
  • 8 Inch Dual 4 Ohm Coil Configuration
  • RMS Power: 400 Watts
  • MAX Power: 800 Watts
  • 2 Inch - 4 Layer High-Temperature Copper Voice Coil
  • Y30 Graded Double Stacked Ferrite Magnet
  • Flexible High Foam Surround
  • Composite Paper with 3% Carbon Fiber Reinforcement
  • Signature Chrome Plated Low Carbon Iron Bottom Plate
  • Advanced Air Cooling System
  • Dual Round Weaved Copper Tinsel Leads
  • 12 Gauge Push Terminals
  • Fs: 42.61 Hz
  • Qms: 3.47
  • Qes: 0.58
  • Qts: 0.49
  • Vas: 8.18 L
  • Cms: 0.16 mm/N
  • Mms: 86.27 gr
  • Sd: 188.69 cm²
  • Re: 6.4
  • Le: 4.69
  • BI: 15.93 n/a
  • Sensitivity: 84.2 dB
  • Xmax: 9mm (one-way)
Subwoofer Measurements:
Cutout diameter 7.2"
Overall diameter 8.46"
Mounting depth 4.8"
Box Specifications:
Port Area 12 in2
Displacement 0.07 ft3
Flat Response Curve (SQ):
Sealed 0.3 ft3
Ported 0.4 ft3
Tuning Frequency 38 Hz
Boomer Response Curve (SPL):
Sealed  -
Ported 0.7 ft3
Tuning Frequency 42 Hz

*Flat response curve (SQ) is geared towards people looking for responsiveness. This style box is loud on all frequencies, generates little impedance loss, and can utilize an amplifier rated at the same RMS as the subwoofer.

*Boomer response curve (SPL) is geared towards people looking for maximum loudness. This style box will be louder than the flat response curve at some frequencies, has a high impedance rise, and can utilize an amplifier rated at a slightly higher RMS than the subwoofer.

*Enclosure recommendations do not account for subwoofer, bracing, and port displacement.

Subwoofer Quantity     
Voice Coil Impedance  

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