Crown Com-Tech 1610, Руководство по обслуживанию

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Com-Tech 810 and 1610 Amplifier Service Manual
]
2-8
Rev. 0
Maximum Power Specifications
Crown’s maximum power specifications represent the largest amount of output power you can expect from your amplifier
when it is driven to full output under the given conditions. These specifications can be used to prevent loudspeaker and
hearing damage.
The maximum power matrices include specifications for single cycle and 40-millisecond burst sine waves. Burst signals act
like large transient peaks that are present in common source signals. Loudspeakers can respond to a single cycle burst, so
the single cycle burst specifications should be used to help you protect your loudspeakers. In contrast, a 40 millisecond burst
represents the typical response time of the human ear. Your ear will not respond to the entire dynamic change of a burst that
lasts less than 40 milliseconds.
The burst power specifications are provided at 0.05% THD which is a practical low distortion condition. Operating the amplifier
at levels higher than 0.05% THD can result in output power levels that are higher than those listed in the maximum power
matrices.
Figure 2.8 Com-Tech 810 Maximum Power Matrix
Maximum Power Notes:
All maximum power specifica-
tions are based on 0.5% regu-
lated AC mains with THD of less
than 1.0% and an ambient
room temperature of 70° F (21°
C). Although it is an unusual
condition, your amplifier can
function well with AC mains volt-
ages up to 10% over the speci-
fied line voltage. With overvolt-
age conditions, your amplifier
may be capable of delivering
instantaneous power levels up
to 20% greater than the speci-
fications in the matrix.
1. A single cycle sine wave is
presented to the amplifier
and monitored for nonlinear
distortion. The average
power during the burst is
reported. Loudspeakers
must be able to withstand
this level if they are to be
safely used with this ampli-
fier.
2. A 40 millisecond sine wave
burst (10 percent duty
cycle) is presented to the
amplifier and monitored for
nonlinear distortion. Aver-
age power during the burst
is reported. This power
level is a measurement of
the amplifier’s maximum
transient power that can be
perceived by the human
ear.
12.5 (70V)
4
Dual
(both channels
driven)
Bridge-Mono
(balanced output)
Parallel-Mono
2
25 (140V)
8
6.25 (70V)
8
4
16
Dual
(both channels
driven)
Bridge-Mono
(balanced output)
Parallel-Mono
Com-Tech 810 – Maximum Power (Watts)
Dual/Mono
Mode
40 Millisecond Tone Burst
At 0.05% THD
(See note 2)
Single Cycle Tone Burst
At less than 0.05% THD
(See note 1)
50 Hz 1 kHz
Load in Ohms
(Constant Voltage)
20 Hz 50 Hz 1 kHz 7 kHz 7 kHz
AC Mains
120 VAC, 60 Hz
100/120 VAC, 50/60 Hz
Dual
(both channels
driven)
Bridge-Mono
(balanced output)
Parallel-Mono
220/240 VAC, 50/60 Hz
12.5 (70V)
4
2
25 (140V)
8
6.25 (70V)
8
4
16
12.5 (70V)
4
2
25 (140V)
8
6.25 (70V)
8
4
16
515
320
480
1010
640
980
1060
645
975
460
230
475
915
600
920
900
600
915
475
305
475
930
605
920
910
600
915
575
340
530
1120
680
1045
1160
685
1045
605
295
545
1195
705
1085
1195
700
1070
610
360
545
1190
705
1085
1185
710
1080
695
385
590
1405
770
1185
1390
765
1170
750
375
610
1500
810
1230
1485
805
1210
755
405
615
1530
815
1225
1475
790
1225
690
375
575
1385
755
1145
1380
755
1135
730
370
595
1480
790
1190
1450
780
1185
740
395
590
1470
785
1180
1415
770
1175
545
320
480
1060
650
960
1100
650
985
555
275
510
1110
665
990
1075
660
975
570
340
505
1095
675
980
1085
665
985
470
300
455
945
595
910
950
590
910
470
235
470
935
600
910
920
600
905
485
305
475
945
605
910
920
595
910
495
310
475
995
620
955
985
615
945
490
245
490
980
630
955
960
625
945
500
320
490
985
635
945
955
620
940