Specifications
Type: High-Performance Subwoofer
Series: ESB 3 Series
Speaker Size: 10" (250 mm)
Configuration: Dual Voice Coil (4Ω + 4Ω)
Power Handling (RMS): 400 W
Power Handling (Peak): 800 W
Nominal Impedance: 4 Ω (Per Coil)
Sensitivity (1W/1m): 87 dB
Frequency Response: 28 Hz – 500 Hz
Voice Coil
• Diameter: 2" (50 mm)
• Material: Copper Winding
• Former: High-Temperature Aluminum Former
• Cooling: Vented Pole Piece and Voice Coil Airflow Ports
Cone & Suspension
• Cone Material: Pressed Paper Composite with Damping Resin
• Surround: High-Roll Rubber Surround
• Spider: Progressive Nomex® Spider with Reinforced Tinsel Leads
• Dust Cap: Low-Mass ESB Embossed Composite Cap
Motor & Basket
• Magnet: High-Density Ferrite Magnet Structure
• Basket: Heavy-Duty Cast Aluminum Frame (Anti-Resonance)
• Motor Venting: Multi-Port Backplate Venting for Thermal Stability
Terminals
• Type: Nickel-Plated Push Terminals
• Wire Capacity: Up to 10 AWG
Physical Dimensions
Mounting Depth: 5.3" (135 mm)
Cutout Diameter: 9.2" (234 mm)
Displacement: 0.08 cu ft (2.3 L)
Weight: 13.6 lbs
Warranty: 1-Year Manufacturer Warranty
Performance Specs
• Smooth, articulate bass response designed for accurate musical reproduction.
• Dual 4Ω coils allow wiring for 2Ω or 8Ω amplifier matching.
• Cast basket and high-roll surround allow controlled excursion and durability.
• Engineered to maintain clarity at high output without distortion.
Key Features
• Dual 4Ω Voice Coil Flexibility – Ideal for multiple amplifier configurations.
• Damped Paper Composite Cone – Natural tone with controlled bass character.
• Cast Aluminum Basket – Rigid design reduces resonance and mechanical coloration.
• High-Temperature Voice Coil – Built for continuous high-output operation.
• Progressive Suspension System – Maintains linear motion and reduces distortion.
• ESB Audio Sound Signature – Tight, accurate, musical low-frequency response.
Performance Integration Notes
• Ideal Amplifier Pairing: 400–500 W RMS Mono Amplifier (2Ω stable).
• Recommended Sealed Enclosure: 0.7–1.0 cu ft (19.8–28.3 L).
• Recommended Ported Enclosure: 1.25–1.5 cu ft (35.4–42.5 L) tuned @ 33 Hz.
• Application: SQ / SQ+ builds, Harley bag enclosures, trunk or rear cargo installs.
• Installation Time: ~45 minutes.
Pro Tip:
For Harley bag installs, tune low-pass around 80 Hz and apply a subsonic filter at 28–30 Hz for best clarity and cone control.
