HYDRO-8 // 300 Watt RMS 8 Inch Shallow Mount Subwoofer
HYDRO-8 // 300 Watt RMS 8 Inch Shallow Mount Subwoofer
HYDRO-8 // 300 Watt RMS 8 Inch Shallow Mount Subwoofer
HYDRO-8 // 300 Watt RMS 8 Inch Shallow Mount Subwoofer
HYDRO-8 // 300 Watt RMS 8 Inch Shallow Mount Subwoofer
HYDRO-8 // 300 Watt RMS 8 Inch Shallow Mount Subwoofer

HYDRO-8 // 300 Watt RMS 8 Inch Shallow Mount Subwoofer

Regular price 25% OFF Before: $99.99 Sale pricePrice: $74.99
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$74.99
COIL CONFIGURATION
Details

CT Sounds is proud to introduce the hydro shallow mount subwoofer series after completing a rigorous R&D process spanning 2 years! Our goal was to engineer a 300-watt 8” shallow-mount subwoofer with a mounting depth below 3.5” that was suitable for both sealed & ported enclosures. To achieve this, we focused on the EBP (Efficiency Bandwidth Product). As a general rule, EBP < 50, is used only for sealed enclosures, EBP 50 - 100, is used for both, and EBP > 100, is used only for ported enclosures. EBP = FS/QES.

Quick Facts:
RMS Power: 300 Watts
MAX Power: 600 Watts
Voice Coil Configuration: Dual 2 Ohm
Use Cases: Sealed & Ported Enclosures

Our 1st prototype utilized a 50.8 mm voice coil & 30 oz magnet resulting in a high QES rating of 1.05 and low EBP of 44.1. The 2nd prototype utilized a 44.7 mm voice coil & 30 oz magnet resulting in a slightly lower QES rating of 0.843 and a slightly higher EBP of 54.8. After the 1st and 2nd prototypes, we determined a larger motor assembly was needed to provide a more controlled electrical system (lower QES). This led us to invest in a custom-tooled basket (used in the final prototype) to keep the mounting depth below 3.5”.

The 3rd and final prototype uses a 44.7 mm voice coil & 40 oz magnet resulting in a reduced QES rating of 0.577 and a balanced EBP of 80.07. In testing, we ran into mechanical noise due to the larger motor assembly and voice coil in a confined space. Therefore, we invested in a custom-tooled cone to maximize the excursion capability by creating an equal distance between the cone, spider, and bottom plate. The result is an 8” shallow-mount subwoofer that is extremely responsive in both sealed & ported enclosures.

Specs
General Specifications:
Product Type: Car Subwoofer
Subwoofer Size: 8"
Voice Coil Configuration: Dual 2 Ohm
RMS Power: 300 Watts
MAX Power: 600 Watts
Voice Coil Type: 1.75 Inch - 4 Layer High-Temperature Copper Voice Coil
Magnet Type: Y35
Bottom Plate Type: Low Carbon Iron
Surround Type: Dual White Stitched Competition Mega Foam Surround
Cone Type: Composite Paper with 3% Carbon Fiber Reinforcement
Tinsel Lead Type: Single Braided Flat Copper Tinsel Leads
Terminal Type: 12 Gauge Push Terminals
Basket Type: Stamped Steel
Spider Material: Poly-Cotton Blend
T/S Parameters:
Qes: 0.577
Qms: 6.549
Qts: 0.531
Fs: 46.20 Hz
Vas: 10.298 L
Mms: 82.895 g
Cms: 0.143 m/N
Re: 3.9 Ω
Bl: 12.751 Tm
Le: /
Sd: 227 cm²
Xmax - Single Way (mm): 8 mm
Xmax - Single Way (cm): 0.8 cm
Vd (Sd*Xmax): 181.6 cm²
SPL: 84.48 dB
Box Specs
Subwoofer Measurements:
Cutout diameter 7.51"
Overall diameter 8.77"
Mounting depth 3.26"
Box Specifications:
Displacement 0.02 ft3
Box Recommendations:
Sealed 0.35 ft3
Ported 0.875 ft3
Tuning Frequency 36 Hz
Port Area 14 in2

*Enclosure recommendations do not account for subwoofer, bracing, and port displacement.

Details

CT Sounds is proud to introduce the hydro shallow mount subwoofer series after completing a rigorous R&D process spanning 2 years! Our goal was to engineer a 300-watt 8” shallow-mount subwoofer with a mounting depth below 3.5” that was suitable for both sealed & ported enclosures. To achieve this, we focused on the EBP (Efficiency Bandwidth Product). As a general rule, EBP < 50, is used only for sealed enclosures, EBP 50 - 100, is used for both, and EBP > 100, is used only for ported enclosures. EBP = FS/QES.

Quick Facts:
RMS Power: 300 Watts
MAX Power: 600 Watts
Coil Configuration: Dual 4 Ohm
Use Cases: Sealed & Ported Enclosures

Our 1st prototype utilized a 50.8 mm voice coil & 30 oz magnet resulting in a high QES rating of 1.21 and low EBP of 39.23. The 2nd prototype utilized a 44.7 mm voice coil & 30 oz magnet resulting in a slightly lower QES rating of 0.976 and a slightly higher EBP of 48.64. After the 1st and 2nd prototypes, we determined a larger motor assembly was needed to provide a more controlled electrical system (lower QES). This led us to invest in a custom-tooled basket (used in the final prototype) to keep the mounting depth below 3.5”.

The 3rd and final prototype uses a 44.7 mm voice coil & 40 oz magnet resulting in a reduced QES rating of 0.668 and a balanced EBP of 71.06. In testing, we ran into mechanical noise due to the larger motor assembly and voice coil in a confined space. Therefore, we invested in a custom-tooled cone to maximize the excursion capability by creating an equal distance between the cone, spider, and bottom plate. The result is an 8” shallow-mount subwoofer that is extremely responsive in both sealed & ported enclosures.

Specs
General Specifications:
Product Type: Car Subwoofer
Subwoofer Size: 8"
Voice Coil Configuration: Dual 4 Ohm
RMS Power: 300 Watts
MAX Power: 600 Watts
Voice Coil Type: 1.75 Inch - 4 Layer High-Temperature Copper Voice Coil
Magnet Type: Y35
Bottom Plate Type: Low Carbon Iron
Surround Type: Dual White Stitched Competition Mega Foam Surround
Cone Type: Composite Paper with 3% Carbon Fiber Reinforcement
Tinsel Lead Type: Single Braided Flat Copper Tinsel Leads
Terminal Type: 12 Gauge Push Terminals
Basket Type: Stamped Steel
Spider Material: Poly-Cotton Blend
T/S Parameters:
Qes: 0.668
Qms: 6.083
Qts: 0.602
Fs: 47.47 Hz
Vas: 10.427 L
Mms: 77.535 g
Cms: 0.145 m/N
Re: 6.4 Ω
Bl: 14.880 Tm
Le: /
Sd: 227 cm²
Xmax - Single Way (mm): 8 mm
Xmax - Single Way (cm): 0.8 cm
Vd (Sd*Xmax): 181.6 cm²
SPL: 84.48 dB
Box Specs
Subwoofer Measurements:
Cutout diameter 7.51"
Overall diameter 8.77"
Mounting depth 3.26"
Box Specifications:
Displacement 0.02 ft3
Box Recommendations:
Sealed 0.35 ft3
Ported 0.875 ft3
Tuning Frequency 36 Hz
Port Area 14 in2

*Enclosure recommendations do not account for subwoofer, bracing, and port displacement.

Wiring Calc.
Subwoofer Quantity     
Voice Coil Impedance  

Customer Reviews

Based on 19 reviews
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Brandon M. (Louisville, KY)
Super Impressed with the Hydro 8 and customer service

Replaced OEM sub in Explorer Platinum, using OEM enclosure. Wasn't quite as loud but sounded much better (OEM was .6 ohm vs 1.0 ohm for the Hydro, so it wasn't getting as much power). Added a new amp, dialed to the right power, and MAN this little dude gets it! I have years of past professional experience in car audio, and I know what a good amp and woofer can do, but this is better than expected. Especially around the 30-50hz range, it's not afraid to get low.
Early on I had an issue with the subwoofer, and customer service helped me troubleshoot. Ended up being the enclosure and how it mounts, not the woofer, but the help was quick and thorough. I'll absolutely be back for future upgrades.

K
Keith F. (Caldwell, ID)
CT Sounds is the best

You can’t beat anything they sell for the money. You just can’t. Some of their stuff is better than “name brands” that cost 3-10x as much. The Hydro 8” fit perfectly in the factory enclosure of my 02 SVT Focus.

T
T.H. (Dallas, TX)
Awesome for the Old 2005 F-150

I’ve been fixing up the old 2005 F-150 Lariat for my son, and have had a crackle with the factory sub. Took it apart and found it was dry rotting and falling apart. Had to dremmel the opening just a bit to make it fit, but it looks factory, and sounds even better than before. Highly recommend.

M
Marshall (Smyrna, TN)
Hydro 8 works great!

My vehicle had a factory sub, but it didn’t sound that great. I was looking for something better. Space was tight, so I needed a shallow mount. The Hydro 8 delivered. Sound quality was much better than I expected. If I had know the difference it would make, I would have done it sooner. I’ve never used CT Sounds before, but I’ll be using them again. Very satisfied, wish I had done it sooner.

K
Keith L. (Springfield, LA)
Very impressive subwoofer for it’s size

Let me start with WOW!!
So I decided to build my own stealth box in my center console for my 95 Dodge Ram. The box needed to be small and sealed which the volume came out to be 0.35. Started researching shallow subs and the CT Sounds Hydro specs matched perfectly for what I was looking and with only needing 3.27 inch mounting depth.
I didn’t need a big subwoofer just a little bass but when I fired this thing up I was floored. A lot of people probably won’t believe this but it actually shakes the truck but it’s all about the setup.
I’ve been an audiophile for many years and the CT Sounds Hydro is on the top of my list. Very Very Impressive.