Search  for anything...

CT Sounds Hydro 8” Dual 4-Ohm 600-Watt Shallow Mount Car Subwoofer

  • Based on 124 reviews
Condition: New
Checking for product changes

Buy Now, Pay Later


As low as $15.00 / mo
  • – 6-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: 16 left in stock
Fulfilled by Amazon

Arrives Monday, May 12
Order within 18 hours and 56 minutes
Available payment plans shown during checkout

Size: 8"


Style: Dual 4 Ohm


Features

  • 8" Dual 4-Ohm Shallow-Mount Car Subwoofer
  • RMS Power: 300 Watt | Max Power: 600 Watt
  • Mounting Depth: 3.27" | Cutout Diameter: 7.52"
  • FS: 46.20 Hz | QES: 0.577 | EBP: 80.07
  • Extremely Responsive In Both Ported & Sealed Enclosures

Brand: CT Sounds


Speaker Maximum Output Power: 600 Watts


Connectivity Technology: Coaxial


Mounting Type: Flush Mount


Model Name: Hydro


Speaker Type: Subwoofer


Special Feature: Hi Res Audio


Recommended Uses For Product: For Surround Sound Systems


Compatible Devices: Projector, Laptop, MP3 Player, Television, Desktop, Tablet, Smartphone


Subwoofer Diameter: 8 Inches


Unit Count: 1.0 Count


Controller Type: Voice control


Color: black


Included Components: CT Sounds HYDRO-8-D4 8" Dual 4-Ohm Shallow-Mount Car Subwoofer


Product Dimensions: 8.78"D x 8.78"W x 3.94"H


Impedance: 4 Ohm


Is Waterproof: FALSE


Number of Items: 1


Speaker Size: 8 Inches


Power Source: Corded Electric


Woofer Diameter: 8 Inches


Audio Driver Type: Dynamic Driver


Audio Driver Size: 8 Inches


UPC: 850044969302


Style: Dual 4 Ohm


Manufacturer: CT Sounds


Item Weight: 8.47 pounds


Item model number: HYDRO-8-D4


Date First Available: January 8, 2024


Country of Origin: China


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, May 12

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Amazing Subwoofer Upgrade for My BMW X6!
Size: 10" Style: Dual 4 Ohm
The CT Sounds Hydro 10” Dual 4-Ohm Subwoofer fit perfectly in my 2012 BMW X6 with its shallow mount design. Even though it’s a shallow sub, the bass it produces is incredibly deep and powerful. Installation was smooth, and the dual 4-ohm setup gave me flexibility for wiring to my amp. The sound quality is very clean, with tight bass hits that enhance all types of music. I’m impressed by how much punch it delivers without taking up too much space. The subwoofer feels well-built and handles high power without any distortion. Highly recommend it to anyone looking for a big sound in a tight space! ... show more
Reviewed in the United States on April 28, 2025 by Jonah Kim

  • Great build quality and sound!
Size: 10" Style: Dual 2 Ohm
Great build quality and sound for a shallow mount 10in. I’m sure this thing really has a lot of potential in the right box but I had to use the smallest box I could find since I installed this in a Kenworth dump truck. I’ve owned multiple subs and never noticed a difference after a break in but this thing continues to get better with time. I listen to it pounding all day 10-12hrs a day powered by a ct sounds 400.1d compact amp with no issues. Will definitely buy agin for future projects. ... show more
Reviewed in the United States on April 25, 2025 by Tyler Hagner Tyler Hagner

  • Maxima calidad
Size: 10" Style: Dual 2 Ohm
Un subwoofer de calidad excepcional y más
Reviewed in the United States on April 26, 2025 by Jose R. Acosta Irizarry

  • Great Sub
Size: 10" Style: Dual 4 Ohm
These subs bang! Put a 1000 watt ct sounds d mono block and they handle them very well. Super happy with the CT brand.
Reviewed in the United States on April 14, 2025 by Chris Ramos

  • Sounds good
Size: 10" Style: Dual 2 Ohm
Good sub but it's sensitive to power
Reviewed in the United States on April 12, 2025 by Marlon Jefferson

  • Best subwoofers on Amazon!!
Size: 12" Style: Dual 4 Ohm
Had installed since January/Februaryish, absolutely does not disappoint. Would absolutely buy again without a doubt, quality is good, and it sounds amazing in a good box.
Reviewed in the United States on April 11, 2025 by David Mendoza

  • Super happy
Size: 10" Style: Dual 2 Ohm
Heavy duty speaker! Don’t have it turned all the way up just yet because my installer said to let it break in a bit. Sounds really nice!
Reviewed in the United States on April 6, 2025 by Rafael

  • I’m impressed
Size: 10" Style: Dual 2 Ohm
This sub kicks butt. It sounds every bit as good as my friends sundowns. Connecting everything up was stupid simple. 10/10 recommend. Good price too.
Reviewed in the United States on April 5, 2025 by J

Can't find a product?

Find it on Amazon first, then paste the link below.