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Owner’s Manual
Owner’s Manual
Acoustic Section
Free-Field Frequency Response:
±1.5 dB, 37 Hz to 20 kHz
Lower cutoff frequency: –3 dB @ 35 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: 120 dB SPL @ 1m
Maximum short term SPL on axis,
half space 80 Hz to 2.5 kHz: 111 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: 8 watts
Quiescent (idle): 18 watts
Musical Program, Loud mix: 135 watts
Rated Power
(For UL-6500, CSA-E65-94, EN-60065):
150 watts
US: 120 VAC, 60 Hz
Europe: 240 VAC, 50 Hz
Korea: 220 VAC, 60 Hz
Japan: 100 V, 50-60 Hz
Note: The HR824 MK2 does not support multiple voltage
configurations. Make sure the voltage rating for your particular
model (as indicated on the rear panel near the IEC socket) cor-
responds with your local AC mains voltage.
Physical Properties
Height: 16.8 in/42.5 cm
Width: 10.8 in/27.3 cm
Depth Enclosure: 11.4 in/29.0 cm
Depth Overall: 13.8 in/35.1 cm
Weight: 34.6 lb/15.7 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.
Graphs
11.4" (29.0 cm)
13.8" (35.1 cm)
16.8"
(42.5 cm)
HR824 MK2
WEIGHT
34.6 lb
(15.7 kg)
10.8" (27.3 cm)
HR824 Acoustic Space Filter Response
-15
+5
-14
-13
-12
-11
-10
-9
-8
-7
-6
-5
-4
-3
-2
-1
-0
+1
+2
+3
+4
d
B
u
10 20k20 50 100 200 500 1k 2k 5k 10k
Hz
®
HR824 High Frequency EQ Filter Response
-15
+5
-14
-13
-12
-11
-10
-9
-8
-7
-6
-5
-4
-3
-2
-1
-0
+1
+2
+3
+4
d
B
u
10 20k20 50 100 200 500 1k 2k 5k 10k
Hz
®
HR824 Low Frequency Filter Response
-45
+5
-43
-41
-39
-37
-35
-33
-31
-29
-27
-25
-23
-21
-19
-17
-15
-13
-11
-9
-7
-5
-3
-1
+1
+3
d
B
u
10 20020 30 40 50 60 70 80 90 100
Hz
®