- 5 INCH COPPER VOICE COIL
 
- 97 dB/SPL SENSITIVITY
 
- 3600 WATT PROGRAM POWER HANDING
 
- FEM OPTIMIZED MOTOR AND SUSPENSIONS
 
- 46mm PEAK TO PEAK MAXIMUM EXCURSION
 
- OPTIMIZED COOLING SYSTEM
 
- DOUBLE SPIDER
 
- RESONANCE FREE AND HEAVY DUTY BASKET DESIGN
 
- TRIPLE ROLL SURROUND

Nominal diameter	545(21) mm (in.)
Nominal impedance	4 Ω
Minimum impedance	4 Ω
Program power (1)	3600 W
AES Power rating(2)	1800 W
Sensitivity (3)	97 dB
Frequency range	30 ~ 1000 Hz
Voice coil diameter	125(5) mm (in.)
Chassis material	Aluminium
Magnet material	Ferrite
Magnet dimensions (ODxIDxh)	280 x 140 x 25 mm
Coil material	SV
Former material	Glass Fiber
Xmax(4)	14.5 mm
Xmech(5)	23 mm
Gap height	14 mm
Voice coil Winding height	36 mm

DC resistance(Re)	3.6 Ω
Resonance frequency(Fs)	30 Hz
Moving mass(Mms)	325 g
Compliance(Cms)	0.08 mm/N
Force factor(BL)	26.1 N/A
Mechanical Q-factor(Qms)	10.6
Electrical Q-factor(Qes)	0.34
Total Q-factor(Qts)	0.33
Equivalent air volume(Vas)	380 I
Voice coil Inductance(Le)	3.8 mH
Diaphragm area(Sd)	1750 cm2
Reference efficiency(Eta O)	3.1 %

Net weight	22.1 Kg
Multipack size (1) (W x D x H)	570 x 570 x 270 mm
Multipack weight	24.6 Kg

(1)Program power is defined as 3 dB greater than AES Power.
(2) Tested for two hours using a continuous, band-limited pink noise signal as per AES 2-1984 Rev. 2003. Loudspeaker tested in free air.
(3) From T/S parameters, measured with LMS DA LPM module.
(4) The Xmax is calculated as: (Hvc - Hg)/2+ Hg/4. Hvc is the voice coil height and Hg the gap height.
(5) The Xmech is calculated as: (Hvc - Hg)/2 +(Hg-2). Hvc is the voice coil height and Hg the gap height.
(6) Thiele-Small parameters are measured after preconditioning: a) at 20°C- 22°C, 50% humidity for 2 hours; b) by LMS LSI measurement.