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18HP1020 { 18" - 1000 W - 99 dB - 8 Ohm }
Available Impedance: 8 Ohm
Nominal Specifications
Nominal Diameter 460 mm (18 in)
Overall Diameter 460 mm (18.11 in)
Bolt Circle Diameter 440 mm (17.32 in)
Baffle Cutout Diameter 424 mm (16.69 in)
Depth 202 mm (7.95 in)
Flange and Gasket Thickness 13.9 mm (0.55 in)
Net Weight 6.5 Kg (14.2 lb)
Shipping Box
(Single Carton Box)
503 x 500 x 258 mm
(19.8 x 19.7 x 10.2 in)
Shipping Weight 7.8 Kg (17.2 lb)


Technical Parameters
Nominal Impedance 8 Ohm
Minimum Impedance 6.6 Ohm
AES Power Handling (1) 1000 W
Maximum Power Handling (2) 2000 W
Sensitivity (1W/1m) 99 dB
Frequency Range 35÷1600 Hz
Voice Coil Diameter 100 mm (4 in)
Winding Material Cu
Former Material Glass Fiber
Winding Depth 23 mm (0.91 in)
Magnetic Gap Depth 12 mm (0.47 in)
Flux Density 1.3 T
Magnet Neodymium Slug
Basket Material Aluminum
Demodulation No
Cone Surround (3) Triple Roll
NET Air Volume filled by Loudspeaker 6.2 dm^3 (0.219 ft^3)
Spider Profile 2x non-adjacent symmetrical constant height waves
Thiele and small parameters
Fs 35 Hz
Re 5.4 Ohm
Qes 0.28
Qms 9.74
Qts 0.27
Vas 207.2 dm^3 (7.32 ft^3)
Sd 1134 cm^2 (175.77 in^2)
Xmax (4) 9.50 mm
Xdamage (5) 17.5 mm
Mms 182.0 g
Bl 28 N/A
Le 1.7 mH
Mmd 159.5 g
Cms 0.11 mm/N
Rms 4.1 Kg/s
Eta Zero 3.10 %
EBP 125 Hz



Notes:
PATENTED IT 2006/000327
(1) 2 Hours Test According to AES 2-1984 Rev. 2003
(2) Maximum power is defined as 3dB greater than nominal power.
(3) Treated Polycotton
(4) Xmax= [(winding depth - magnetic gap depth)/2] + (magnetic gap depth/3)
(5) Maximum excursion before permanent damage
Quick acoustic specs
Nominal Impedance 8 Ohm
Minimum Impedance 6.6 Ohm
AES Power Handling (1) 1000 W
Sensitivity (1W/1m) 99 dB
Frequency Range 35÷1600 Hz
Flux Density 1.3 T
Magnet Neodymium Slug
Demodulation No
Cone Surround (2) Triple Roll
Fs 35 Hz
Re 5.4 Ohm
Qes 0.28
Qms 9.74
Qts 0.27
Vas 207.2 dm^3 (7.32 ft^3)
Sd 1134 cm^2 (175.77 in^2)
Xmax (3) 9.50 mm
Xdamage (4) 17.5 mm
Mms 182.0 g
Bl 28 N/A
Le 1.7 mH
Mmd 159.5 g
Cms 0.11 mm/N
Rms 4.1 Kg/s
Eta Zero 3.10 %
EBP 125 Hz



Note:
PATENTED IT 2006/000327
(1) 2 Hours Test According to AES 2-1984 Rev. 2003
(2) Treated Polycotton
(3) Xmax= [(winding depth - magnetic gap depth)/2] + (magnetic gap depth/3)
(4) Maximum excursion before permanent damage
Quick mechanical specs
Nominal Diameter 460 mm (18 in)
Overall Diameter 460 mm (18.11 in)
Bolt Circle Diameter 440 mm (17.32 in)
Baffle Cutout Diameter 424 mm (16.69 in)
Depth 202 mm (7.95 in)
Flange and Gasket Thickness 13.9 mm (0.55 in)
Net Weight 6.5 Kg (14.2 lb)
Shipping Box
(Single Carton Box)
503 x 500 x 258 mm
(19.8 x 19.7 x 10.2 in)
Shipping Weight 7.8 Kg (17.2 lb)