Crown Audio CTs Series (Multi-Channel) - Manual (Page 10)

Operation Manual
CTs Power Amplifiers
page 18 page 19
CTs Power Amplifiers
Operation Manual
CONDITION: No sound, even though
the amp has power.
Power LED is on
without flashing and the amp is receiving an
input signal. Signal indicator is flashing.
• Speakers not connected.
• Open circuit due to speaker failure.
CONDITION: No input signal.
(Signal indicator is not flashing even though
audio is applied and channel is ready).
POSSIBLE REASON:
• Input signal level is very low.
• Input cables have become disconnected.
• There is a short on the amplifier
output. First disconnect your speakers
from the affected channel(s) one by one
to determine if one of the loads is
shorted.
6 Troubleshooting
CONDITION: Thermal indicator is
flashing.
POSSIBLE REASON:
• The amplifier has become too hot for
safe operation. Check for loads less than
2 ohms, and for excessive input levels.
Check for proper ventilation and proper
mode-switch setting. Driving low-
impedance loads while in high-voltage
mode can cause overheating.
CONDITION: All channel thermal
indicators are flashing.
POSSIBLE REASON:
• Power supply thermal overload.
• DC or excessive low-frequency signal at
the amplifier’s output has enabled
speaker protection.
CONDITION: Bridge LED is flashing .
POSSIBLE REASON :
• The mode switch was switched while the
power was on.
7 Specifications
Channel Pairs Driven
160
200
200
175
155
185* 250
190
220
260
200
240
270
220
250
230
220
230*
400
320
200
350
310
185*
540
440
250
460
440
230*
500
380
220
Bridge-Mono Mode
8 Ohm
16 Ohm
100V (50 Ohm) at 0.1% THD
70V (25 Ohm) at 0.1% THD
8 Ohm
4 Ohm
Channels Driven
Dual Mode
1 kHz 1 kHz 1 kHz 1 kHz 20 Hz - 20 kHz
1 kHz 20 Hz - 20 kHz
20 Hz - 20 kHz
1 kHz 1 kHz 20 Hz - 20 kHz
CTs 8200: MINIMUM GUARANTEED POWER (In watts, 0.1% THD) 120VAC, 60 Hz units
8 4 2 1
4 2 1
* Constant Voltage full bandwidth power ratings support 100 Hz - 20 kHz due to automatic high-pass filters.
Channels Driven 2 4 1
2 1
1 kHz 20 Hz - 20 kHz 1 kHz 1 kHz 20 Hz - 20 kHz
4 Ohm 260 215 270 270 225
8 Ohm 180 190 210 220 210
70V (25 Ohm) at 0.1% THD 220 220* 240 250 245*
Channel Pairs Driven
1 kHz 20 Hz - 20 kHz 1 kHz 20 Hz - 20 kHz
520 430 560 450
400 380 440 420
220 220* 250 245*
8 Ohm
16 Ohm
100V (50 Ohm)
Bridge-Mono Mode
CTs 4200: MINIMUM GUARANTEED POWER (in watts, 0.1% THD) 120VAC, 60 Hz units
Dual Mode
at 0.1% THD
* Constant Voltage full bandwidth power ratings support 100 Hz - 20 kHz due to automatic high-pass filters.
Figure 7.1 CTs 4200
Power Chart
Figure 7.2 CTs 8200
Power Chart
“Off/Flashing/On” above means that
the LED can be off, or flashing, or on.