Crown Audio CSL 1400 - Manual (Page 12)

1400 CSL Power Amplifier
Page 13 Reference Manual
1,075 watts into 16 ohms.
Parallel-Mono mode:
1,515 watts into 2 ohms.
1,050 watts into 4 ohms.
Load Impedance: Safe with all types of loads. Rated
for 4 to 8 ohms in Stereo, 8 to 16 ohms in Bridge-Mono
and 2 to 4 ohms in Parallel-Mono mode.
Required AC Mains: 50 to 60 Hz; 100, 120, 220, 230
and 240 VAC (±10%) units are available. All draw
90 watts or less at idle. Current, frequency and voltage
requirements are provided on each unit’s back panel.
100 and 120 VAC units draw up to 15 amps of current;
220 and 240 VAC units draw up to 7 amps.
Sufficient AC power must be provided to the amplifier.
Amplifiers cannot create energy—they require proper
voltage and current to deliver the power you expect.
Low-Voltage Power Supply: A ±24 VDC fanformer
supply (fan motor winding) regulated to ±15 VDC.
AC Connector: An appropriate AC line cord and plug
are provided. North American units have a standard
3-wire, 15 amp grounded connector (NEMA 5-15P).
Controls
Enable: A front panel rocker switch used to turn the
amplifier on and off.
Level: A back panel rotary potentiometer for each chan-
nel used to control the output level.
Stereo/Mono: A three-position back panel switch used
to select Stereo, Bridge-Mono or Parallel-Mono mode.
Sensitivity: A three-position switch inside the back
cover plate used to select the input sensitivity for both
channels: 0.775 volts or 1.4 volts for standard 1-kHz
power, or 26-dB voltage gain (see Section 2.3).
Ground Lift: A two-position back panel switch used to
isolate the phone jack input ground from the AC ground.
Reset: A back panel push button used to reset the circuit
breaker that protects the power supplies.
Indicators
Enable: This amber indicator shows the on/off status
of the low-voltage power supply.
Input/Output
Input Connector: Two balanced ¼-inch phone jacks.
See Section 5 for XLR and barrier block accessories.
Input Impedance: Nominally 20 k ohms, balanced; 10 k
4 Specifications
The following applies to units in Stereo mode with 8-ohm loads and
an input sensitivity of 26 dB unless otherwise specified.
Standard 1 kHz Power: refers to maximum average power in watts
at 1 kHz with 0.1% THD.
Full Bandwidth Power: refers to maximum average power in watts
from 20 Hz to 20 kHz with 0.1% THD.
120 VAC, 60 Hz Units: refers to amplifiers with dedicated trans-
formers for 120 VAC, 60 Hz power mains.
International Units: refers to amplifiers with special multi-tap trans-
formers that make them configurable for several AC mains voltages
and line frequencies.
Performance
Frequency Response: ±0.1 dB from 20 Hz to 20 kHz
at 1 watt.
Phase Response: ±10 degrees from 10 Hz to 20 kHz
at 1 watt.
Signal-to-Noise Ratio: A-weighted, better than 105 dB
below full bandwidth power. No weighting, better than
100 dB below full bandwidth power.
Total Harmonic Distortion (THD): Less than 0.05% at
full bandwidth power from 20 Hz to 1 kHz increasing
linearly to 0.1% at 20 kHz.
Intermodulation Distortion (IMD): (60 Hz and 7 kHz)
Less than 0.05% from less than 158 milliwatts to full
bandwidth power.
Damping Factor: Greater than 1,000 from 10 Hz to
400 Hz.
Crosstalk: Greater than 90 dB below full bandwidth power
from 50 Hz to 4 kHz, rising linearly to greater than 70 dB at
20 kHz.
Slew Rate: Greater than 13 volts per microsecond.
Voltage Gain: 20:1 ±3% or 26 dB ±0.25 dB at the maxi-
mum level setting; 83:1 ±12% or 38.4 dB ±1 dB at 0.775
volt sensitivity; 46:1 ±12% or 33.3 dB ±1 dB at 1.4 volt
sensitivity.
Power
Output Power: The following specifications are guar-
anteed minimums for standard 1 kHz power from 120
VAC, 60 Hz North American units. For additional infor-
mation and power specifications for international units,
see the power matrices on the pages that follow.
Stereo mode (both channels driven):
700 watts into 4 ohms.
500 watts into 8 ohms.
Bridge-Mono mode:
1,500 watts into 8 ohms.