09/02
Technical Manual
ND310II
Northridge
™
Series
ACOUSTIC & ELECTRICAL SPECIFICATIONS:
• Nominal Impedance 8 ohms
• Max Amp Power 250 watts*
•Frequency Response 37Hz – 20kHz
• Sensitivity 91dB (1 watt @ 1 meter)
•Crossover Frequencies 1000Hz, 5000Hz
SYSTEM COMPONENTS:
• Enclosure ND310II (not for sale)
•Grille 337804-001
• Low-Frequency 10" (254mm) Polyplas
™
, shielded
Transducer (2) 335573-002
DC Resistance 10.8 ohms ±10%
• Mid-Frequency Transducer 4" (102) Polyplas
™
, shielded
335588-002
DC Resistance 4.4 ohms ±10%
• High-Frequency
3/4" (19mm) titanium-laminate
Transducer dome, shielded 338035-001
DC Resistance 3.0 ohms ±10%
•Crossover Network 335624-002
AURAL SWEEP TEST SPECIFICATIONS:
• System Aural Sweep Test 6.0V Input 30Hz to 20kHz
• L.F. Aural Sweep Test 6.0V Input 30Hz to 2kHz
• M.F. Aural Sweep Test 4.0V Input 500Hz to 6kHz
• H.F. Aural Sweep Test 2.83V Input 4kHz to 20kHz
PHYSICAL SPECIFICATIONS:
• Enclosure Dimensions 42" x 14-1/2" x 12"
(H x W x D) 1067mm x 368mm x 305mm
•Weight 55 lb/25kg (each)
WARRANTY:
• Refer to Warranty Statement packed with each product.
* The maximum recommended amplifier power rating will
ensure proper system headroom to allow for occasional
peaks. We do not recommend sustained operation at
these maximum power levels.
L.F.
M.F.
H.F.
