8NDF55T1 MID Drivers 8 inchs

Notes

- 2.16 INCH EDGEWOUND CCA VOICE COIL

- 97 dB/SPL SENSITIVITY

- 400 WATT PROGRAM POWER HANDING

- IDEAL FOR DIRECT RADIATION AND HORN

-LOADED MIDRANFE APPLICATION

GENERAL SPECIFICATIONS

Nominal diameter	200-229(8) mm (in.)
Nominal impedance	8 Ω
Minimum impedance	7.2 Ω
Program power (1)	400 W
AES Power rating(2)	200 W
Sensitivity (3)	97 dB
Frequency range	108~4500 Hz
Voice coil diameter	55(2.15) mm (in.)
Chassis material	Aluminium
Magnet material	Neodymium
Magnet dimensions (ODxIDxh)	100X60X6 mm
Coil material	CCAR
Former material	Glass Fiber
Xmax(4)	3.5 mm
Xmech(5)	6 mm
Gap height	6 mm
Voice coil Winding height	10 mm

SMALL SIGNAL PARAMETERS

DC resistance(Re)	5.6 Ω
Resonance frequency(Fs)	108.6 Hz
Moving mass(Mms)	21.5 g
Compliance(Cms)	0.13 mm/N
Force factor(BL)	15.3 N/A
Mechanical Q-factor(Qms)	17.8
Electrical Q-factor(Qes)	0.39
Total Q-factor(Qts)	0.38
Equivalent air volume(Vas)	8.5 I
Voice coil Inductance(Le)	0.31 mH
Diaphragm area(Sd)	243 cm²
Reference efficiency(Eta O)	2.09 %

SHIPPING INFORMATION

Net weight	1.46 Kg
Multipack size (1) (W x D x H)	420x365x230 (8) mm
Multipack weight	12.7 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) 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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