About: CT Sounds BIO-12 12" 400W RMS Car Subwoofer 

CT Sounds is proud to introduce the Bio 12” Car Subwoofer; our latest entry-level car audio subwoofer line designed to kickstart your journey into the world of car audio. The Bio 12” boasts a conservatively rated 400-watt rms power rating and delivers impressive performance while remaining budget-friendly.

The Bio 12” subwoofer comes equipped with a 2.4 inch - 4 layer high-temperature copper voice coil and a high narrow foam surround, providing precise and clear bass reproduction. Its advanced air cooling system will keep things running smoothly even during extended listening sessions, ensuring reliable performance when you need it most.

Designed to seamlessly pair with our pre-fabricated subwoofer enclosures, the Bio 12” Subwoofer offers a hassle-free solution for those who prefer not to build their own subwoofer box. When combined with our subwoofer enclosures, customers can expect deep bass on the lows, delivering an immersive audio experience that's sure to impress.

Product Highlights: 

• RMS Power: 400 Watts
• MAX Power: 800 Watts
• Voice Coil Configuration: Dual 2 Ohm (D2) or Dual 4 Ohm (D4) 
• Push Terminal Size: 12 Gauge 

Features: 

• Product Type: Car Subwoofer

• Subwoofer Size: 12"
• Voice Coil Configuration: Dual 2 Ohm (D2) or Dual 4 Ohm (D4)
• RMS Power: 400 Watts
• MAX Power: 800 Watts
• Voice Coil Type: 2.4 Inch - 4 Layer High-Temperature Copper Voice Coil
• Magnet Type: Single Stacked Y25 Ferrite Magnet
• Bottom Plate Type: Signature White Zinc Low Carbon Iron Bottom Plate
• Surround Type: High Narrow Foam Surround
• Cone Type: Pressed Composite Paper
• Tinsel Lead Type: Single Round Copper Tinsel Leads with 2% Silver
• Terminal Type: 12 Gauge Push Terminals
• Basket Type: Stamped Steel
• Spider Material: 7" Single-Layer Poly-Cotton Spider Suspension

Specifications: 

• Qes: 0.73 (D2) | 0.842 (D4) 

• Qms: 5.392 (D2) | 6.557 (D4) 
• Qts: 0.644 (D2) | 0.746 (D4) 
• Fs: 33.06 Hz (D2) | 35.227 Hz (D4) 
• Vas: 51.68 L (D2) | 49.20 L (D4) 
• Mms: 155.78 g (D2) | 144.10 g (D4) 
• Cms: 0.149 m/N (D2) | 0.142 m/N (D4) 
• Re: 3.8 Ω (D2) | 7.4 Ω (D4) 
• Bl: 12.971 Tm (D2) | 16.745 Tm (D4) 
• Sd: 499 cm²   
• Xmax - Single Way (mm): 7.5 mm (0.75 cm) 
• Vd (Sd*Xmax): 374.25 cm³ 
• SPL: 86.10 dB (D2) | 86.10 dB (D4) 

Subwoofer Measurements: 

• Mounting Depth: 5.35"

• Cutout Diameter: 11.02"
• Overall Diameter: 12.44"

Box Specifications: 

• Flat Response Curve (SQ):
• Sealed: 0.75 ft³
• Ported: 1 ft³
• Tuning Frequency: 32 Hz
• Port Area: 12 in²
• Boomer Response Curve (SPL):
• Sealed: N/A 
  
• Ported: 1.5 ft³
• Tuning Frequency: 32 Hz
• Port Area: 24 in²

Notes: 

• Flat response curve (SQ) is geared towards people looking for responsiveness. This style box is loud on all frequencies, generates little impedance loss, and can utilize an amplifier rated at the same RMS as the subwoofer.
• Boomer response curve (SPL) is geared towards people looking for maximum loudness. This style box will be louder than the flat response curve at some frequencies, has a high impedance rise, and can utilize an amplifier rated at a slightly higher RMS than the subwoofer.
• Enclosure recommendations do not account for subwoofer, bracing, and port displacement.