CT1X8 // Single 8” Kerf Port Universal Car Subwoofer Box
CT1X8 // Single 8” Kerf Port Universal Car Subwoofer Box
CT1X8 // Single 8” Kerf Port Universal Car Subwoofer Box
CT1X8 // Single 8” Kerf Port Universal Car Subwoofer Box
CT1X8 // Single 8” Kerf Port Universal Car Subwoofer Box
CT1X8 // Single 8” Kerf Port Universal Car Subwoofer Box

CT1X8 // Single 8” Kerf Port Universal Car Subwoofer Box

Regular price 23% OFF Before: $116.99 Sale pricePrice: $89.99

The CT Sounds CT1X8 is a single 8-inch empty car subwoofer box engineered for maximum bass response and low-frequency reproduction. The kerf-style port, universal fit, poly-filled lined internal walls, and 7.37” cutout diameter make this pre-fabricated 8” subwoofer enclosure compatible with a wide variety of subwoofer brands on the market. Its kerf-style port, typically only seen in custom enclosures, will “unhide” the missing bass in your system and have your subwoofer playing deeper and more accurately.

The CT1X8 subwoofer box was constructed using some of the most advanced joinery practices - dado joints connect the exterior left/right wood pieces to the exterior back/top/bottom wood pieces by a groove, and miter joints connect the corners of the box by cutting the wood at a 45-degree angle. These joinery practices ensure maximum surface contact and eliminate any concern for vibration. Additionally, the recessed side panels further enhance the air-tight, vibration-free construction design.

To finish the equation, the subwoofer box is wrapped in a premium-grade black carpet with a flush-mounted black terminal cup. The terminal cup features 8-gauge push-terminals labeled with red & black stickers identifying positive and negative connections. Internally, the subwoofer box comes with 12-gauge speaker wires that are pre-soldered to the terminal cup creating a true plug-n-play product offering.

General Specifications:
Subwoofer Box Size: Single 8"
Subwoofer Box Type: Empty Subwoofer Box
Subwoofer Box Style: Kerf Port
Wood Thickness: 3/4"
Wood Material: MDF
Cut-out Diameter: 7.37"
Mounting Depth: 10.95"
Subwoofer Box Specifications:
Gross Volume: 1.06 ft3
Tuning Frequency: 39 Hz
Port Length: 24.15"
Port Width: 1.26"
Kerf Fold Length: 3.93"
Kerf Fold Width: 2.50"
External Dimensions:
Length: 18.00"
Height: 11.00"
Depth (Bottom): 15.44"
Depth (Top): 13.50"
Fit guide
Fit Guide:
BIO-8: ✔️
TROPO-8: ✔️
MESO-8: ✔️

*When pairing these subwoofer boxes with CT Sounds Subwoofers, you can expect loud on the lows, for the low!

Customer Reviews

Based on 6 reviews
Devon W. (Sacramento, CA)

Best box I’ve bought so far

Robert G. (Knoxville, TN)

I purchased this 8 inch Meso subwoofer and I’m really pleased with it. I didn’t want a whole lot of bass that is the reason I bought the 8 and not the 10. I have had a 12s years ago and this 8 is stronger than they were. I purchased the 1500 watt mono amp with the 8. Its strong enough the blur your vision slightly when the gain is all the way up, but outside my 2023 Jeep it’s not nearly as loud as it is inside. I absolutely love it. Thank you

Wayne S. (Glens Falls, NY)
8" for AB hd8v2

Got this box for my quadcab ram for a 8" american bass HDv2 its pretty close to spec for the sub, carpet finish is super tight and smooth, wires in the terminal are nice terminal its self is great feels very durable, tune on it is id say pretty close to what they claim. Sounds fantastic with this sub although it was EXTREMELY tight fit with the big @$$ magnet on the american bass,
Only issue is the kerf port carpet wasnt glued down so its blowing in the wind (easy fix) with some fabric glue.

Matthew P. (Essex Junction, VT)
Quality materials

The box feels nice and isn't plastic feeling like other carpeted boxes on the market. The push terminals are sturdy and tight unlike others I've used in the past. Pre wired and tinned speaker wire installed, in the box is a nice touch too. Can't wait for you guys to make a triple 8 box for my future endeavors

J.M. (Guntersville, AL)
Killer box, especially at the price point

I put my troop 8 in this box running on a CT 700-1.D and it's making my single tropo 8 beat like a