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Owner’s Manual
Owner’s Manual
Acoustic Section
Free-Field Frequency Response:
±1.5 dB, 49 Hz to 20 kHz
Lower cutoff frequency: –3 dB @ 45 Hz
Upper cutoff frequency: –3 dB @ 22 kHz
Sound Pressure Level at 1 meter,
–7.5 dBu into balanced input: 100 dB SPL @ 1m
Maximum peak SPL per pair: 115 dB SPL @ 1m
Maximum short term SPL on axis,
half space 80 Hz to 2.5 kHz: 106 dB SPL @ 1m
Residual noise (maximum gain, 600Ω source,
20 Hz-20 kHz bandwidth): < 8 dB SPL @ 1m
Rated Line Input Voltage and Power:
Power consumption:
Standby mode: 12 watts
Quiescent (idle): 20 watts
Musical Program, Loud mix: 105 watts
Both channels driven into
resistive loading to 1% clipping
(LF 86W/4Ω, HF 38W/8Ω): 255 watts
US: 120 VAC, 60 Hz
Europe: 240 VAC, 50 Hz
Korea (AC Power Selector at 240 V):
220 VAC, 60 Hz
Japan (AC Power Selector at 120 V):
100 V, 50-60 Hz
Rated Power
(For UL-6500, CSA-E65-94, EN-60065):
130 watts
Physical Properties
Height: 13.1 in/33.3 cm
Width: 8.6 in/21.9 cm
Depth Enclosure: 10.3 in/26.2 cm
Depth Overall: 12.6 in/31.9 cm
Internal Volume: 0.29 cubic feet (8.2 liters)
Weight: 23.4 lb/10.6 kg
LOUD Technologies is always striving to improve our products
by incorporating new and improved materials, components and
manufacturing methods. Therefore, we reserve the right to change
these specifications at any time without notice.
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HR624 Acoustic Space Filter Response
dBu
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HR624 High Frequency EQ Filter Response
dBu
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HR624 Low Frequency Filter Response
dBu
Graphs
10.3" (26.2 cm)
12.6" (31.9 cm)
13.1"
(33.3 cm)
HR624 MK2
WEIGHT
23.4 lb
(10.6 kg)
8.6" (21.9 cm)