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12RS550 { 12" - 500 W - 93 dB - 8 Ohm }
Available Impedance: 8 Ohm
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Nominal Specifications
Nominal Diameter 300 mm (12 in)
Overall Diameter 316 mm (12.44 in)
Bolt Circle Diameter 298.5 mm (11.75 in)
Baffle Cutout Diameter 282 mm (11.10 in)
Depth 145.1 mm (5.71 in)
Flange and Gasket Thickness 17.1 mm (0.67 in)
Net Weight 8.1 kg (17.9 lb)
Shipping Box
(Single Carton Box)		 350 x 346 x 216 mm
(13.8 x 13.6 x 8.5 in)
Shipping Weight 8.8 kg (19.4 lb)


Technical Parameters
Nominal Impedance 8 Ohm
Minimum Impedance 6.3 Ohm
AES Power Handling (1) 500 W
Maximum Power Handling (2) 1000 W
Sensitivity (1W/1m) 93 dB
Frequency Range 45÷2500 Hz
Voice Coil Diameter 77 mm (3 in)
Winding Material Cu
Former Material Glass Fiber
Winding Depth 22 mm (0.87 in)
Magnetic Gap Depth 10.5 mm (0.41 in)
Flux Density 1.2 T
Magnet Ferrite Ring
Basket Material Aluminum
Demodulation No
Cone Surround (3) Half Roll
NET Air Volume filled by Loudspeaker 2.9 dm^3 (0.102 ft^3)
Spider Profile 1x variable height waves
Thiele and small parameters
Fs 42 Hz
Re 5.1 Ohm
Qes 0.39
Qms 6.9
Qts 0.37
Vas 45.4 dm^3 (1.60 ft^3)
Sd 528 cm^2 (81.84 in^2)
Xmax (4) 9.25 mm
Xdamage (5) 20 mm
Mms 123 g
Bl 20.5 N/A
Le 1.5 mH
Mmd 109.3 g
Cms 0.12 mm/N
Rms 4.7 kg/s
Eta Zero 0.83 %
EBP 108 Hz


PART NUMBER (P/N)
Push Terminals - 8 Ohm Version 03004260



Notes:
(1) 2 Hours Test According to AES 2-1984 Rev. 2003
(2) Maximum power is defined as 3dB greater than nominal power.
(3) NBR (Rubber)
(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 6.3 Ohm
AES Power Handling (1) 500 W
Sensitivity (1W/1m) 93 dB
Frequency Range 45÷2500 Hz
Flux Density 1.2 T
Magnet Ferrite Ring
Demodulation No
Fs 42 Hz
Re 5.1 Ohm
Qes 0.39
Qms 6.9
Qts 0.37
Vas 45.4 dm^3 (1.60 ft^3)
Sd 528 cm^2 (81.84 in^2)
Xmax (2) 9.25 mm
Xdamage (3) 20 mm
Mms 123 g
Bl 20.5 N/A
Le 1.5 mH
Mmd 109.3 g
Cms 0.12 mm/N
Rms 4.7 kg/s
Eta Zero 0.83 %
EBP 108 Hz



Note:
(1) 2 Hours Test According to AES 2-1984 Rev. 2003
(2) Xmax= [(winding depth - magnetic gap depth)/2] + (magnetic gap depth/3)
(3) Maximum excursion before permanent damage
Quick mechanical specs
Nominal Diameter 300 mm (12 in)
Overall Diameter 316 mm (12.44 in)
Bolt Circle Diameter 298.5 mm (11.75 in)
Baffle Cutout Diameter 282 mm (11.10 in)
Depth 145.1 mm (5.71 in)
Flange and Gasket Thickness 17.1 mm (0.67 in)
Net Weight 8.1 kg (17.9 lb)
Shipping Box
(Single Carton Box)		 350 x 346 x 216 mm
(13.8 x 13.6 x 8.5 in)
Shipping Weight 8.8 kg (19.4 lb)