15NRF75U1 LF Drivers 15 inchs

Notes

3 INCH ALUMINIUM VOICE COIL
 
98 dB/SPL SENSITIVITY
 
800 WATT PROGRAM POWER HANDING
 
FEM OPTIMIZED MOTOR AND SUSPENSIONS
 
OPTIMIZED COOLING SYSTEM
 
RESONANCE FREE AND HEAVY DUTY BASKET DESIGN
 
ALUMINIUM DEMODULATING RING

GENERAL SPECIFICATIONS

Nominal diameter 390(15) mm (in.)
Nominal impedance 8 Ω
Minimum impedance 6.4 Ω
Program power (1) 800 W
AES Power rating(2) 400 W
Sensitivity (3) 98 dB
Frequency range 38 ~ 3000 Hz
Voice coil diameter 75(3) mm (in.)
Chassis material Aluminium
Magnet material Neodymium
Magnet dimensions (ODxIDxh) 74 x 15 x 10 mm
Coil material ALR
Former material Glass Fiber
Xmax(4) 6.2 mm
Xmech(5) 11.7 mm
Gap height 10 mm
Voice coil Winding height 17.5 mm

SMALL SIGNAL PARAMETERS

DC resistance(Re) 5.1 Ω
Resonance frequency(Fs) 38 Hz
Moving mass(Mms) 78 g
Compliance(Cms) 0.23 mm/N
Force factor(BL) 15.60 N/A
Mechanical Q-factor(Qms) 5.5
Electrical Q-factor(Qes) 0.4
Total Q-factor(Qts) 0.37
Equivalent air volume(Vas) 152 I
Voice coil Inductance(Le) 0.80 mH
Diaphragm area(Sd) 880 cm2
Reference efficiency(Eta O) 3 %

SHIPPING INFORMATION

Net weight 4.5 Kg
Multipack size (1) (W x D x H) 410 x 410 x 194 mm
Multipack weight 5.4 Kg

OTHERS

(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.