Specifications - Crown Macro-Tech MA-1200 Reference Manual

Macro-Tech 600/1200/2400 Power Amplifiers

6 Specifications

The following applies to units in Stereo mode with 8-ohm loads and
an input sensitivity of 26 dB gain 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
transformers that are configurable for several AC mains voltages
and line frequencies (some are labeled 601, 1201 and 2401).
Performance
Frequency Response: ±0.1 dB from 20 Hz to 20 kHz at 1
watt (see Figure 6.7).
Phase Response: ±10 degrees from 10 Hz to 20 kHz at 1
watt (see Figure 6.10).
Signal-to-Noise Ratio: 20 Hz to 20 kHz: Better than
100 dB below full bandwidth power. A-weighted: Better
than 105 dB below full bandwidth power.
Total Harmonic Distortion (THD): Less than 0.05% at
full bandwidth power from 20 Hz to 1 kHz increasing lin-
early to 0.1% at 20 kHz.
Intermodulation Distortion (IMD): (60 Hz, 7 kHz) Less
than 0.05% from 163 milliwatts to full bandwidth power.
Damping Factor: Greater than 1,000 from 10 Hz to 400
Hz (see Figure 6.8).
Crosstalk: See Figures 6.11, 6.12 and 6.13.
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 (also see Section 4.4).
Macro-Tech 600 : 54:1 ±12% or 35 dB ±0.5 dB at 0.775 volt
sensitivity; 30:1 ±12% or 30 dB ±0.5 dB at 1.4 volt sensitivity.
Macro-Tech 1200 : 64:1 ±12% or 36 dB ±0.5 dB at 0.775 volt
sensitivity; 36:1 ±12% or 31 dB ±0.5 dB at 1.4 volt sensitivity.
Macro-Tech 2400 : 83:1 ±12% or 38 dB ±0.5 dB at 0.775 volt
sensitivity; 46:1 ±12% or 33 dB ±0.5 dB at 1.4 volt sensitivity.
Power
Output Power: The following are guaranteed minimums
for standard 1 kHz power from 120 VAC, 60 Hz North
American units. For more information or specs on interna-
tional units, see the power matrices that follow.
Macro-Tech 600
Stereo mode (both channels driven):
400 watts into 2 ohms.
325 watts into 4 ohms.
220 watts into 8 ohms.
Reference Manual
Bridge-Mono mode:
750 watts into 4 ohms.
655 watts into 8 ohms.
450 watts into 16 ohms.
Parallel-Mono mode:
700 watts into 1 ohm.
665 watts into 2 ohms.
450 watts into 4 ohms.
Macro-Tech 1200
Stereo mode (both channels driven):
675 watts into 2 ohms.
480 watts into 4 ohms.
310 watts into 8 ohms.
Bridge-Mono mode:
1300 watts into 4 ohms.
970 watts into 8 ohms.
620 watts into 16 ohms.
Parallel-Mono mode:
1300 watts into 1 ohm.
965 watts into 2 ohms.
620 watts into 4 ohms.
Macro-Tech 2400
Stereo mode (both channels driven):
1050 watts into 2 ohms.
800 watts into 4 ohms.
520 watts into 8 ohms.
Bridge-Mono mode:
2070 watts into 4 ohms.
1585 watts into 8 ohms.
1035 watts into 16 ohms.
Parallel-Mono mode:
2080 watts into 1 ohm.
1605 watts into 2 ohms.
1035 watts into 4 ohms.
Load Impedance: Safe with all types of loads. Rated for 2 to
16 ohms in Stereo, 4 to 16 ohms in Bridge-Mono and 1 to 4
ohms in Parallel-Mono mode.
Required AC Mains: 50/60 Hz; 100, 120, 220, 230 and 240
VAC (±10%) units are available. All draw 100 watts or less at
idle. Current, voltage and frequency requirements are pro-
vided on the unit's back panel (also see Section 7).
Amplifiers don't create energy. The AC mains voltage and
current must be sufficient to deliver the power you expect.
Controls
Enable: A front panel push button used to turn the amplifier
on and off.
Level: A front panel rotary control for each channel with 31
detents used to control the output level.
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