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 2 reviews
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R
Rachichas (Rio Rancho, NM)
Powerfull subwoofer

Sounds better than alpine, pioneer, for less money!

L
Loren D. (Oklahoma City, OK)
Hydro 8's!

Installed 2 of these in the rear deck ib 350 watts @ 4ohms & they slam!