Power Stereo (per channel) : 1,800w @ 2ohm, 1,560w @ 4ohm, 1,120w @ 8ohm, Bridge-Mono 3,505w @ 4ohm, 3,140w @ 8ohm.
Output Power: The following are guaranteed minimums for standard 1-kHz power from 120 VAC, 60 Hz North American units. Maximum average watts per channel (unless in Mono mode) at 1 kHz with 0.1% or less THD.
Stereo mode with both channels driven:
1800 watts into 2 ohms.
1565 watts into 4 ohms.
1120 watts into 8 ohms.
3505 watts into 4 ohms.
3140 watts into 8 ohms.
3555 watts into 1 ohm.
3190 watts into 2 ohms.
Load Impedance: Rated for 16, 8, 4, and 2 ohm use only. Safe with all types of loads, even reactive ones.
AC Power Requirements: 100 VAC, 50/60 Hz; 120 VAC, 50/60 Hz; and 230 VAC, 50/60 Hz units are available. 230 VAC, 50/60 Hz units can be used with 220 and 240 VAC. All versions draw 90 watts or less at idle. 100 and 120 VAC units can draw up to 30 amps of current; 230 VAC units can draw up to 15 amps.
Enable: This amber indicator is on when the amplifier is switched on to show that the low voltage power supply is operating.
Signal / IOC: Two green indicators flash with medium intensity in sync with the amplifier’s outputs to show signal presence. In the unlikely event the output waveform differs from that of the input by 0.05% or more, they flash brightly to indicate distortion. As sensitive distortion indicators they provide proof of performance. Note: It is normal for the Channel 2 IOC indicator to remain on in Parallel-Mono mode.
ODEP: Each channel has a multifunction LED (light emitting diode) indicator that shows the channels energy reserve status. Normally, the LEDs are brightly lit to show that reserve energy is available. In the rare event that a channel has little reserve, its indicator dims in proportion to ODEP limiting. An ODEP indicator may also turn off under other, more unusual circumstances.
Stereo: Unbalanced, two-channel.
Bridge-Mono: Balanced, single-channel. Channel 1 controls are active; Channel 2 controls are inactive and not removed from operation.
Parallel-Mono: Unbalanced, single-channel. Channel 1 controls are active; Channel 2 controls are inactive but not removed from operation.
Macro-Tech amplifiers are protected against shorted, open or mismatched loads; overloaded power supplies; excessive temperature, chain destruction phenomena, input overload damage and high-frequency blow-ups. They also protect loudspeakers from input/output DC and turn-on/turn-off transients.
If unreasonable operating conditions occur, the patented ODEP circuitry proportionally limits the drive level to protect the output devices, particularly in the case of elevated temperature. Transformer overheating results in a temporary shutdown of the offending channel. When it has cooled to a safe temperature, the transformer automatically resets itself. Controlled slew rate voltage amplifiers protect against RF burnouts, and input overload protection is provided by current-limiting resistance at the input.
Turn On: The four second turn-on delay prevents dangerous turn-on transients. Turn-on occurs at zero crossing of the AC waveform, so power sequencers are rarely needed with multiple units. Note: The turn-on delay time may be changed. Contact Crowns Technical Support Group for details.
Circuit Breaker: Circuit breaker current ratings vary based on the AC operating power.
Durable black powder coated steel chassis and aluminum front panel with Lexan overlay; specially designed flow-through ventilation from front to side panels.
Cooling: Forced-air with custom heat diffusers and patented circuitry to promote uniform dissipation.
Dimensions: 19 inch (48.3 cm) standard rack mount (EIA Std. RS-310-B), 3.5 inch (8.9 cm) height, 16 inch (40.6 cm) depth behind mounting surface and 2.5 inches (6.4 cm) in front of mounting surface.
Weight: Center of gravity is 6 inches (15.2 cm) behind the front mounting surface.