12NDF75M1 LF Drivers 12 inchs

Notes

- 3 INCH COPPER VOICE COIL

- 97.1 dB/SPL SENSITIVITY

- 800 WATT PROGRAM POWER HANDING

- FEM OPTIMIZED MOTOR AND SUSPENSIONS

- OPTIMIZED COOLING SYSTEM

- RESONANCE FREE AND HEAVY DUTY BASKET DESIGN

GENERAL SPECIFICATIONS

Nominal diameter	302-320 (12) mm (in.)
Nominal impedance	8 Ω
Minimum impedance	5.7 Ω
Program power (1)	800 W
AES Power rating(2)	400 W
Sensitivity (3)	97.1 dB
Frequency range	51~3200 Hz
Voice coil diameter	75(3) mm (in.)
Chassis material	Aluminium
Magnet material	Neodymium
Magnet dimensions (ODxIDxh)	74x15x10 1pc mm
Coil material	CCAW
Former material	Glass Fiber
Xmax(4)	5 mm
Xmech(5)	10.5 mm
Gap height	10 mm
Voice coil Winding height	15 mm

SMALL SIGNAL PARAMETERS

DC resistance(Re)	4.5 Ω
Resonance frequency(Fs)	51 Hz
Moving mass(Mms)	50 g
Compliance(Cms)	0.21 mm/N
Force factor(BL)	17.3 N/A
Mechanical Q-factor(Qms)	5.3
Electrical Q-factor(Qes)	0.34
Total Q-factor(Qts)	0.32
Equivalent air volume(Vas)	107 I
Voice coil Inductance(Le)	0.87 mH
Diaphragm area(Sd)	581 cm²
Reference efficiency(Eta O)	3.3 %

SHIPPING INFORMATION

Net weight	3.7 Kg
Multipack size (1) (W x D x H)	330 X 330 X 180 mm
Multipack weight	4.1 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.

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