HD1501 Specifications
Acoustic Performance
Frequency Response (–10 dB):
36 Hz – 145 Hz
Frequency Response (–3 dB):
43 Hz – 92 Hz
Max peak SPL (calculated)
1
:
131 dB
Max peak SPL (measured)
2
:
126 dB
Transducer
Diameter:
15.0 in / 381 mm
Voice Coil Diameter:
3.0 in / 76 mm
Diaphragm Material:
Paper
Magnet
Material:
Ferrite
Power Amplifier
Rated Power:
600 watts rms
1200
watts
peak
THD:
<
0.03%
Design:
Class
D
Cooling:
Active, twin thermally controlled vari-speed fans
Input/Output
Input Type:
Female XLR Balanced differential (stereo left/right)
Input Impedance:
20 k
Full Range Output:
Male XLR Balanced
(parallel
with
input)
High Pass Output:
Male XLR Balanced
Output Impedance:
300
Level Control:
–6 dB to +6 dB
Electronic Crossover
Crossover Type:
24 dB/oct.
Symmetrical
Linkwitz-Riley
Crossover Frequency:
100 Hz
1 Calculated from peak driver sensitivity and amplifier power, half space.
2 Measured with swept sine at 1 W within operating range, scaled for max power, half space.
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HD1501 SERVICE MANUAL
Page 4 of 40
Specifications
Summary of Contents for HD1501
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