Crown ma-1200 Guida Di Riferimento

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).

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.

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.

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.

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.