8NDF65K1 LF Drivers 8 inchs

Notes

- 2.5 INCH COPPER VOICE COIL

- 95.9 dB/SPL SENSITIVITY

- 600 WATT PROGRAM POWER HANDING

- FEM OPTIMIZED MOTOR AND SUSPENSIONS

- OPTIMIZED COOLING SYSTEM

- RESONANCE FREE AND HEAVY DUTY BASKET DESIGN

GENERAL SPECIFICATIONS

Nominal diameter	203-213(8) mm (in.)
Nominal impedance	8 Ω
Minimum impedance	6.1 Ω
Program power (1)	600 W
AES Power rating(2)	300 W
Sensitivity (3)	95.9 dB
Frequency range	76~3500 Hz
Voice coil diameter	65(2.5) mm (in.)
Chassis material	Aluminium
Magnet material	Neodymium
Magnet dimensions (ODxIDxh)	64x10x10 mm
Coil material	CCAW
Xmax(4)	5 mm
Xmech(5)	9 mm
Gap height	8 mm
Voice coil Winding height	14 mm

SMALL SIGNAL PARAMETERS

DC resistance(Re)	5 Ω
Resonance frequency(Fs)	76.7 Hz
Moving mass(Mms)	28 g
Compliance(Cms)	0.15 mm/N
Force factor(BL)	16.1 N/A
Mechanical Q-factor(Qms)	6.7
Electrical Q-factor(Qes)	0.31
Total Q-factor(Qts)	0.29
Equivalent air volume(Vas)	13 I
Voice coil Inductance(Le)	0.21 mH
Diaphragm area(Sd)	243 cm²
Reference efficiency(Eta O)	2.2 %

SHIPPING INFORMATION

Net weight	2.1 Kg
Multipack size (1) (W x D x H)	220x220x115 mm
Multipack weight	2.5 Kg

OTHERS

(1)Program power is defined as 3 dB greater than AES Power.
(2) Tested for two hours using acontinuous, band-limited pink noise signal as per AES 2-1984 Rev. 2003. Loudspeaker testedin free air.

(3) From T/S parameters, measured with LMS DA LPM module.
(4) The Xmax iscalculated as: (Hvc - Hg)/2+ Hg/4. Hvc is the voice coil height and Hg the gap height.
(5) TheXmech 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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