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

  • Based on 238 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon

Arrives Sunday, Oct 18
Order within 1 hour and 40 minutes
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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


Frequency Response: 46.2 hertz


Connectivity Technology: Coaxial


Audio Output Mode: Surround


Audio Output Mode: Surround


Mounting Type: Shallow Mount


Enclosure Material: copper


Speaker Type: Subwoofer


Additional Features: Hi Res Audio


Antenna Location: For Surround Sound Systems


Subwoofer Diameter: 8 inches


Color: black


Is Waterproof: FALSE


Warranty Type: Limited


Control Method: Voice


Speaker Size: 8 inches


Woofer Diameter: 8 inches


Tweeter Diameter: 1 inches


Specific Uses For Product: Car Audio Systems


Controller Type: Voice control


Unit Count: 1 Count


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


Item Weight: 3.76 kg


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


Power Source: Corded Electric


Brand: CT Sounds


Model Number: HYDRO-8-D4


Model Name: Hydro


Built-In Media: CT Sounds HYDRO-8-D4 8" Dual 4-Ohm Shallow-Mount Car Subwoofer


Warranty Description: 1 year manufacturer


Number of Items: 1


UPC: 850044969302


Manufacturer: CT Sounds


Age Range Description: Adult


Speaker Maximum Output Power: 600 watts


Frequency Response: 46.2 hertz


Number of Audio Channels: 1


Impedance: 4 ohm


Connectivity Technology: Coaxial


Wireless Technology: No wireless communication technology


Connectivity Protocol: Coaxial


Audio Driver Type: Dynamic Driver


Audio Driver Size: 8 inches


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Oct 18

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.

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Leasing options through Acima may also be available during checkout.

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Top Amazon Reviews


  • Better than JL AUDIO AND SUNDOWN for shallow mount!!
Size: 12" Style: Dual 4 Ohm
I have the 10's and the 12's in two different trucks and both are very impressive for the price especially. I had JL audio and Sundown audio shallow mount top tier, for shallow, and the CT's actually drop lower and pound just as hand as both or harder! It is very impressive. No lie, I did blow up 2 of the tens due to having them at one ohm running the CT sounds 1200 RMS amp to the 2 tens and they swapped them out for me overnight delivery! I have my mids and highs, amps, and subs in my Sema build, and I blow peoples minds with how clear and hard they smash. Highly Recommend CT Sounds! ... show more
Reviewed in the United States on August 12, 2026 by Derrick

  • Worth every penny
Size: 10" Style: Dual 4 Ohm
I ordered 2 of these bad boys and they hit hard I put them in a custom made box just for them I’m more then happy with them fast delivery next day they showed up.
Reviewed in the United States on September 11, 2026 by Anthony lamarra

  • Well pleased
Size: 10" Style: Dual 4 Ohm
I acquired two of these with the Ct sounds 1000-watt amp for my Tacoma. Initially, I intended to purchase a small-powered subwoofer to discreetly conceal it, but I realized I would require more. It’s been over two decades since I’ve had anything other than factory audio, and I was astounded by the quality of these sounds. ... show more
Reviewed in the United States on July 29, 2026 by FOSJosh

  • I would buy a game from him
Size: 10" Style: Dual 4 Ohm
It's a great speaker
Reviewed in the United States on September 13, 2026 by Andrew

  • Bass as heck
Size: 8" Style: Dual 4 Ohm
Sounds awesome
Reviewed in the United States on August 24, 2026 by Jonathan

  • Nice sounding speakers in the correct box !
Size: 12" Style: Dual 4 Ohm
I have 2 of these. Nice sounding speakers in the correct box ! Tried a sealed box and wasn't happy. Decided to try a ported box, 1.5 cubic ft of airspace per sub and they sound like different speakers !! Ported box is the way to go !
Reviewed in the United States on March 22, 2026 by Ellis Case

  • Warranty
Size: 10" Style: Dual 4 Ohm
Fantastic product support. Speaker quit working and was replaced by warranty
Reviewed in the United States on February 11, 2026 by Alex

  • Not to get these
Size: 10" Style: Dual 4 Ohm
I bought 2 of these subs and it didn't last 3 months and I only have a 1000w amp so it not even the max power and it broke. Going to try to contact the people to try get a replacement. I would not recommend to not get these.
Reviewed in the United States on September 11, 2026 by Don

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