BishopSound 18" Subwoofer Driver Cast Alloy 1000w RMS With Faston Terminals Woofer - BDP18 4 ohm

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Description:

The BishopSound BDP18 was our first ferrite 18″ subwoofer featured in many single and twin 18″ plywood subwoofers. The BDP18 delivers punch due to our unique British-designed motor structure. The 21mm high, 4” (100mm) diameter copper, wire voice coil, is combined with a laminated double silicone spider, water-resistant curvilinear cone, and triple roll surround for even more excursion and linearity.

This subwoofer is available is also available in 8 ohm and is suitable for numerous applications, including compact vented enclosures as small as 120 litres.

4000w peak power capacity
100 mm (4 in) copper voice coil
35 – 1000 Hz response
97 dB sensitivity Xmax 11.3mm
Customers tell us this driver outperforms other branded German and Italian drivers but costs 50% less, which chimes with our ethos of delivering quality, reliable, durable woofers at affordable prices.

Specifications:

Size: 18"
Power: 1000 W
Sensitivity: 97 dB
Impedance: 4 Ohm
Packaging: Single Carton Box (19.7 x 19.7 x 9.45 in)
Shipping Weight: 18 kg
Components & Materials:

Former Material: Glass Fiber
Magnet: Ferrite Ring
Basket Material: Aluminum
Demodulation: Aluminum Ring
Cone Surround: Treated Polycotton (Triple Roll)
Terminals: Push Terminals - 4 Ohm Version
Technical Parameters:

Winding Depth: 21 mm (0.551 in)
Flux Density: 1.1 T
Magnetic Gap Depth: 11 mm (0.4 in)
Nominal Diameter: 460 mm (18 in)
Overall Diameter: 460 mm (18.11 in)
Bolt Circle Diameter: 440 mm (17.32 in)
Baffle Cutout Diameter: 8x7 mm (0.276 in)
Depth: 202 mm (7.95 in)
Flange & Gasket Thickness: 12.0 mm (0.472 in)
Net Weight: 17 kg
Shipping Box Dimensions: 500 x 500 x 240 mm
Voice Coil Diameter: 100 mm (4 in)
Winding Material: Copper
Performance Specifications:

Power Handling:AES Power Handling (2 Hours Test According to AES 2-1984 Rev. 2003): 1000 W
Maximum Power Handling (Defined as 3 dB greater than nominal power): 2000 W
Frequency Range: 35 - 1000 Hz
Sensitivity: 97 dB (1W/1m)
Minimum Impedance: 2.6 Ohm
Nominal Impedance: 4 Ohm
Thiele & Small Parameters:

Fs (Resonant Frequency): 35 Hz
Re (DC Resistance): 5.1 Ohm
Qes: 0.25
Qms: 5.2
Qts: 0.24
Vas: 297.50 liters
Sd (Effective Diaphragm Area): 1210 cm²
Xmax (Maximum Linear Excursion): 11.3 mm
Xdamage (Maximum Excursion before Permanent Damage): 18 mm
Mms (Mechanical Mass of Diaphragm): 170.80 g
Mmd: 75 g
Cms: 0.09 mm/N
Rms: 4.3 kg/s
Eta Zero: 3.1 %
EBP (Efficiency Bandwidth Product): 90 Hz
NET Air Volume Filled by Loudspeaker: 297 dm³ (0.230 ft³)
Spider Profile:
2x non-adjacent symmetrical constant height wave