Black Diamond 18" High Excursion Subwoofer with Carbon Fiber Cone | 3500W RMS / 7000W Peak | Dual 1-Ohm Voice Coil
NEW ARRIVAL
Black Diamond 18" High Excursion Subwoofer with Carbon Fiber Cone | 3500W RMS / 7000W Peak | Dual 1-Ohm Voice Coil
NEW ARRIVAL
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Key Features
- Carbon Fiber Cone
- Carbon Fiber Dust Cap
- SPL-Competition
- High Excursion
- Aluminum Basket
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Technical Data - Manual
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Product Overview
Product Overview
18" High Excursion Subwoofer with Carbon Fiber Cone | 1-Ohm
The DIA-CARBON18.1D delivers earth-shaking bass with 3500W RMS and a peak of 7000W. This 18-inch sub moves massive air for SPL competitions and serious audio enthusiasts.
Lightweight Carbon Fiber
Its ultra-rigid carbon fiber cone and dust cap reduce distortion and improve responsiveness, delivering clear, tight lows even at extreme volumes.
True High-Excursion Design
With an impressive 22.5mm Xmax, the DIA-CARBON18.1D provides deeper cone travel for louder output and immersive, chest-thumping bass.
Engineered to Stay Cool Under Pressure
Massive 3.5" dual aluminum CCAR voice coils and pro-grade motor structure with advanced heat dissipation keep your subwoofer running strong through long, loud sessions without thermal shutdown.
Built Tough for High Performance
Featuring a 425 oz ferrite magnet, sandblasted aluminum basket, foam surround, and heavy-duty 4GA push terminals, this subwoofer is engineered for reliability and powerful SPL builds.
Versatile Enclosure Recommendations
Optimal performance in sealed (3.2 ft³) or ported (7.5 ft³ with 4"x18"x20" port) boxes, allows you to build the way you prefer.
Dominate any venue with Black Diamond’s DIA-CARBON18.1D!
FREE SHIPPING ORDERS +$35 
30-DAY RETURNS 
2 YEAR WARRANTY 
SECURE PAYMENT Hey {Recipient's Name},
{Your Name} wanted to help you out with some gift ideas ;)
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Cheers,
DS18
Black Diamond 18" High Excursion Subwoofer with Carbon Fiber Cone | 3500W RMS / 7000W Peak | Dual 1-Ohm Voice Coil
Let customers speak for us
100% would recommend👍
Sound is loud and clear
Let me tell yall, I purchased the 20 inches for my 2019 polaris slingshot inclousers sub boxes, and these things are the bomb dignity, I mean I love them the bass hit is deep and bold, I get lots of compliments on the way they sounds. So guys go out and get a pair and you want be disappointed
The Pro CF 6x9 is a well built beautifully looking and sounding speaker! Very happy with DS18 and the product they sell!
Thank you DS18!
i love them i got them to complete my 6 speaker rack and now everyone looks at me when driving
This amp has been nothing short of amazing. I have it powering the DS18 shallow mount 10 and it’s very powerful.
YESSAH BOY I GON RUN DIS ON MY 80A STOCK TAHOE ALTERNATOR AND STOCK ELECTRICAL BECUZ DIS GON TURN ALL THE CHICKS HEADS DAS ALL DAT MATTERS
Shetty horns my stunt wall better with QF and JN bc i like to hop on trends
I heard quinns setup with these while i was cruising in my clapped out corolla and now i cant hear out of my left ear
The DS18 PRO-DKH4 is absolutely worth it if you’re chasing serious volume, clarity, and pro-audio level performance. This driver uses a massive 4-inch titanium voice coil and a heavy-duty bolt-on horn that delivers extremely loud, crisp highs without breaking a sweat. With high sensitivity and real power-handling capability, it cuts through road noise, crowds, and outdoor environments effortlessly. The build quality is on another level — the materials and weight alone show it’s made for competition setups, big systems, and anyone who needs their mids and highs to stay clean even at extreme volumes. It’s not meant for casual stock upgrades or soft, warm sound; this is a driver built for people who want aggressive, high-output vocals and instruments that project like a concert speaker. If your system is designed for loud, clean performance and you want a top-tier horn driver that can keep up with big amps and big bass, the PRO-DKH4 is worth every dollar.
made ears bleed bought 5 of them for my churro
These scream, must buy never buying another horn.
I thought my Walmart tweeters was crisp until I ordered these they took my sound to another level
if you are having someone install this for you its the best you can get for this price. im very very happy with the product.
however i was thinking the install would be a lot more plug and play as far as mounting the door speakers and tweeters. other than that no issues at all
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