















STRATO-15 // 1250 Watts RMS 15 Inch Car Subwoofer
You Save 24% ($80.00)
$249.99



The coveted Strato-15-D2 15 Inch Car Subwoofer provides a conservatively rated 1250 Watts RMS of sub-bass destruction. Can you handle the feeling of the Stratosphere in your car? The newest Strato-15 version utilizes a basket with increased spider landing space and was designed using competition mega foam surround, vastly improving the Xmax and excursion.
The subwoofer features a 3 inch - 4 layer high-temperature copper-clad aluminum voice coil, 170 oz double stacked Y35 grade ferrite magnet, die-cast aluminum basket, competition mega foam surround, dual round weaved copper tinsel leads, and a premium grade spider pack. Boasting a conservative rating of 1250 Watts RMS, this 15-inch subwoofer was engineered to savor the sonic euphoria that can only be achieved with a Strato Subwoofer.
Looking to fill in the lows with a little extra for show? You have come to the Stratosphere; bass around the clock because you’ll be the loudest on the block, the CT Sounds Strato 15 Inch Subwoofer adds the decibels without the added cash.
Quick Facts: | |
RMS Power: | 1250 Watts |
MAX Power: | 2500 Watts |
Voice Coil Configuration: | Dual 2 Ohm |
Push Terminal Size: | 8 Gauge |
- 15 Inch Dual 2 Ohm Coil Configuration
- RMS Power: 1250 Watts
- MAX Power: 2500 Watts
- 3 Inch - 4 Layer High-Temperature CCAW Voice Coil
- Y35 Graded Double Stacked Ferrite Magnet
- Competition Mega Foam Surround
- Composite Paper with 4% Carbon Fiber Reinforcement
- Signature Chrome Plated Low Carbon Iron Bottom Plate
- Advanced Air Cooling System
- Dual Round Weaved Copper Tinsel Leads
- 8 Gauge Push Terminals
- Fs: 28.20 Hz
- Qms: 6.67
- Qes: 0.64
- Qts: 0.58
- Vas: 62.88 L
- Cms: 0.07 mm/N
- Mms: 464 gr
- Sd: 804 cm²
- Re: 0.98
- Le: 0.76
- BI: 11.30 n/a
- Sensitivity: 87.48 dB
- Xmax: 15mm (one-way)
Subwoofer Measurements: | |
Cutout diameter | 13.90" |
Overall diameter | 15.50" |
Mounting depth | 8.11" |
Box Specifications: | |
Port Area | 50 in2 |
Displacement | 0.24 ft3 |
Flat Response Curve (SQ): | |
Sealed | 3 ft3 |
Ported | 2.50 ft3 |
Tuning Frequency | 30 Hz |
Boomer Response Curve (SPL): | |
Sealed | - |
Ported | 4 ft3 |
Tuning Frequency | 28 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.




































The coveted Strato-15-D4 15 Inch Car Subwoofer provides a conservatively rated 1250 Watts RMS of sub-bass destruction. Can you handle the feeling of the Stratosphere in your car? The newest Strato-15 version utilizes a basket with increased spider landing space and was designed using competition mega foam surround, vastly improving the Xmax and excursion.
The subwoofer features a 3 inch - 4 layer high-temperature copper-clad aluminum voice coil, 170 oz double stacked Y35 grade ferrite magnet, die-cast aluminum basket, competition mega foam surround, dual round weaved copper tinsel leads, and a premium grade spider pack. Boasting a conservative rating of 1250 Watts RMS, this 15-inch subwoofer was engineered to savor the sonic euphoria that can only be achieved with a Strato Subwoofer.
Looking to fill in the lows with a little extra for show? You have come to the Stratosphere; bass around the clock because you’ll be the loudest on the block, the CT Sounds Strato 15 Inch Subwoofer adds the decibels without the added cash.
Quick Facts: | |
RMS Power: | 1250 Watts |
MAX Power: | 2500 Watts |
Voice Coil Configuration: | Dual 4 Ohm |
Push Terminal Size: | 8 Gauge |
- 15 Inch Dual 4 Ohm Coil Configuration
- RMS Power: 1250 Watts
- MAX Power: 2500 Watts
- 3 Inch - 4 Layer High-Temperature CCAW Voice Coil
- Y35 Graded Double Stacked Ferrite Magnet
- Competition Mega Foam Surround
- Composite Paper with 4% Carbon Fiber Reinforcement
- Signature Chrome Plated Low Carbon Iron Bottom Plate
- Advanced Air Cooling System
- Dual Round Weaved Copper Tinsel Leads
- 8 Gauge Push Terminals
- Fs: 29.20 Hz
- Qms: 6.59
- Qes: 0.71
- Qts: 0.64
- Vas: 61.44 L
- Cms: 0.07 mm/N
- Mms: 442 gr
- Sd: 804 cm²
- Re: 1.63
- Le: 1.03
- BI: 13.60 n/a
- Sensitivity: 87.36 dB
- Xmax: 15mm (one-way)
Subwoofer Measurements: | |
Cutout diameter | 13.90" |
Overall diameter | 15.50" |
Mounting depth | 8.11" |
Box Specifications: | |
Port Area | 50 in2 |
Displacement | 0.24 ft3 |
Flat Response Curve (SQ): | |
Sealed | 3 ft3 |
Ported | 2.50 ft3 |
Tuning Frequency | 30 Hz |
Boomer Response Curve (SPL): | |
Sealed | - |
Ported | 4 ft3 |
Tuning Frequency | 28 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.




































Great build quality
The hardest hit subwoofers I've ever owned
I have this 15" Strato in a custom vented box tuned to 35hz; powered by a CT Sounds T1500.1... I think it's shaking my 21' Accord apart. My rear view mirror is falling off and my back panel under my rear window is coming off. My front and rear windshield is even flexing! LoL Needless to say; I am extremely happy!
I love my sub's all I can say is WOW ,Maybe the bass be with us because CT SOUND is the s..t!!!!!!!!🤪🤪🤪🤪🤪
There is nothing that even comes close to CT for the money, their products are amazing!!!