ND914 31/2" Aluminum Cone FullRange Driver 4 Ohm

ND914 31/2" Aluminum Cone FullRange Driver 4 Ohm
ND91­4 3­1/2" Aluminum Cone Full­Range Driver 4 Ohm
ND91­4
PARAMETERS
Impedance
Re
Le
Fs
Qms
Qes
Qts
Mms
Cms
Sd
Vd
BL
Vas
Xmax
VC Diameter
SPL
RMS Power Handling
Usable Frequency Range (Hz)
4 ohms
4.3 ohms
0.83 mH @ 1 kHz
74 Hz
4.24
0.45
0.41
4.8g
0.96 mm/N
30.4 cm²
12.2 cm³
4.59 Tm
1.4 liters
4.6mm
25 mm
85.6 dB @ 2.83V/1m
30 watts
65 ­ 17,000 Hz
IMPEDANCE/PHASE
FEATURES
Low distortion, full­range 65 Hz to 17 kHz performance
Rubber­edged black anodized aluminum alloy cone
Large excursion capability — 4.6 mm Xmax, 25 mm peak
Self­shielded Neo­Balanced motor structure with copper alloy
shorting ring
1" 4­layer underhung voice coil with polyimide former
FREQUENCY RESPONSE
Note: 1/24th octave smoothing ­ nearfield response included in graph below 450 Hz.
Black = 0°
Red = 15°
Green = 30°
Blue = 45°
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