Crown ct-1610 Guía De Referencia
Page 32
Com-Tech Power Amplifiers
Reference Manual
6 Specifications
The following specifications apply to all models in Dual
mode with 8-ohm loads and an input sensitivity of 26 dB un-
less otherwise specified.
mode with 8-ohm loads and an input sensitivity of 26 dB un-
less otherwise specified.
MAP at 1 kHz: This term refers to maximum average power
in watts at 1 kHz with 0.1% THD.
in watts at 1 kHz with 0.1% THD.
Full Bandwidth Power: This term refers to maximum aver-
age power in watts from 20 Hz to 20 kHz with 0.1% THD.
age power in watts from 20 Hz to 20 kHz with 0.1% THD.
120 VAC, 60 Hz Units: These North American units have
dedicated transformers for 120 VAC, 60 Hz power mains.
dedicated transformers for 120 VAC, 60 Hz power mains.
100/120 VAC Units: These units have two-tap transformers
that accept a 50- or 60-Hz AC line, and can be configured
for 100- or 120-VAC mains.
that accept a 50- or 60-Hz AC line, and can be configured
for 100- or 120-VAC mains.
220/240 VAC Units: These units have two-tap transformers
that accept a 50- or 60-Hz AC line, and can be configured
for 220 or 240 VAC.
that accept a 50- or 60-Hz AC line, and can be configured
for 220 or 240 VAC.
Performance
Frequency Response: ±0.1 dB from 20 Hz to 20 kHz
at 1 watt (see Figure 6.9).
at 1 watt (see Figure 6.9).
Phase Response: ±10 degrees from 10 Hz to 20 kHz
at 1 watt (see Figure 6.12).
at 1 watt (see Figure 6.12).
Hum and Noise: A-weighted, 105 dB below full band-
width power; No weighting, 100 dB below full band-
width power.
width power; No weighting, 100 dB below full band-
width power.
Total Harmonic Distortion (THD): Less than 0.05% at
full power from 20 Hz to 1 kHz increasing linearly to
less than 0.1% at 20 kHz.
full power from 20 Hz to 1 kHz increasing linearly to
less than 0.1% at 20 kHz.
Intermodulation Distortion (IMD): (60 Hz and 7 kHz
4:1) Less than 0.05% from -35 dB to full power band-
width.
4:1) Less than 0.05% from -35 dB to full power band-
width.
Damping Factor: Greater than 1000 from 10 Hz to
400 Hz (see Figure 6.10).
400 Hz (see Figure 6.10).
Crosstalk: See Figure 6.13.
Common Mode Rejection Ratio (CMRR): Better than
70 dB.
70 dB.
Slew Rate: Greater than 17 volts per microsecond.
Voltage Gain: (At the maximum level setting) 20:1 ±6%
or 26 dB ±0.5 dB. 90:1 ±6% or 39 dB ±0.5 dB with the
input sensitivity set to 0.775 volts for 70 volt output. The
following voltage gain specifications are for units with
the input sensitivity set to 0.775 volts for 8/4 ohm output:
or 26 dB ±0.5 dB. 90:1 ±6% or 39 dB ±0.5 dB with the
input sensitivity set to 0.775 volts for 70 volt output. The
following voltage gain specifications are for units with
the input sensitivity set to 0.775 volts for 8/4 ohm output:
Com-Tech 210: 38:1 ±6% or 32 dB ±0.5 dB.
Com-Tech 410: 55:1 ±6% or 35 dB ±0.5 dB.
Com-Tech 810: 64:1 ±6% or 36 dB ±0.5 dB.
Com-Tech 1610: 85:1 ±6% or 39 dB ±0.5 dB.
Com-Tech 410: 55:1 ±6% or 35 dB ±0.5 dB.
Com-Tech 810: 64:1 ±6% or 36 dB ±0.5 dB.
Com-Tech 1610: 85:1 ±6% or 39 dB ±0.5 dB.
Power
Output Power: See the Minimum Guaranteed Power
tables in Figures 6.1-4 for the output power specifica-
tions under a variety of conditions.
tables in Figures 6.1-4 for the output power specifica-
tions under a variety of conditions.
It is extremely important to supply the amplifier with ad-
equate AC power. Power amplifiers cannot add
power—they need the required voltage and current to
deliver the undistorted rated wattages you expect.
equate AC power. Power amplifiers cannot add
power—they need the required voltage and current to
deliver the undistorted rated wattages you expect.
Load Impedance: Safe with all types of loads. With 8/4
ohm output, all Com-Techs
ohm output, all Com-Techs
are rated for 4 to 8 ohms in
Dual mode, 8 to 16 ohms in Bridge-Mono mode, and 2
to 4 ohms in Parallel-Mono mode. With 70 volt output,
rated loads vary among the different models for each
dual/mono mode (see the power matrices that follow).
to 4 ohms in Parallel-Mono mode. With 70 volt output,
rated loads vary among the different models for each
dual/mono mode (see the power matrices that follow).
AC Power Requirements: All units require less than
90 watts at idle. See Section 7 for detailed information
on AC power requirements and thermal dissipation.
90 watts at idle. See Section 7 for detailed information
on AC power requirements and thermal dissipation.
Low-Voltage Power Supply: ±15 VDC regulated sup-
plies are provided by a winding on the power trans-
former.
plies are provided by a winding on the power trans-
former.
Power Cord: An appropriate AC line cord is provided
with a nominal cable length of 3 feet (see Section 2).
with a nominal cable length of 3 feet (see Section 2).
Controls
Enable: A front panel rocker switch used to turn the
amplifier on and off, and enable the remote feature.
amplifier on and off, and enable the remote feature.
Input Attenuation: A detented 21-position back panel
Input Attenuation control for each channel.
Input Attenuation control for each channel.
Output Mode: A back panel switch for each channel
used to select 8/4-ohm or 70-volt output.
used to select 8/4-ohm or 70-volt output.
Dual/Mono: A 3-position back panel switch used to
select Dual, Bridge-Mono or Parallel-Mono operation.
select Dual, Bridge-Mono or Parallel-Mono operation.
Reset: A back panel push button used to reset the
amplifier’s AC mains breaker.
amplifier’s AC mains breaker.
Input Sensitivity: A three-position switch inside the PIP
compartment used to select an input sensitivity for both
channels: 0.775 volts for MAP at 1 kHz in 8/4-ohm mode,
0.775 volts for MAP at 1 kHz in 70-volt mode, or a voltage
gain of 26 dB (Section 4.4).
compartment used to select an input sensitivity for both
channels: 0.775 volts for MAP at 1 kHz in 8/4-ohm mode,
0.775 volts for MAP at 1 kHz in 70-volt mode, or a voltage
gain of 26 dB (Section 4.4).