| Frequency Response |
20 Hz to 20 kHz ±0.5 dB at 1 W |
High-Pass Filter
(70V and 100V operation only) |
-3 dB @ 80 Hz, -12 dB/octave |
| THD+N |
<0.1% at 1 kHz @ -3 dB full rated output power |
| S/N Ratio |
>103 dBA, 20 Hz to 20 kHz, balanced |
| Crosstalk |
-75 dB at 1 kHz |
| Input Sensitivity |
1.23 Vrms, +4 dBu balanced;
0.316 Vrms, -10 dBV unbalanced;
For 150 W (8 Ω), 300 W (8 Ω Bridged), 300 W (70V/100V) |
| Gain |
29 dB @ 8 Ω |
| Protection |
Over current, under voltage, over temperature, DC offset, extreme high frequency |
| Go to Sleep Time |
25 minutes with no signal present (when set to POWER SAVER) |
| Wake Time |
0.5 s typical |
| Wake Threshold |
0.44 mV typical |
| Connectors |
| CH1-CH4 |
(2) 4‑pin 5.08 mm pitch, 12A plug with screw locking retainers;
Power amplifier output;
Wire Size: Terminals accept up to
12 AWG (3.31 mm2)
NOTE: Output is direct‑coupled, not transformer isolated. |
| AUDIO IN (UNBALANCED) |
(4) RCA connectors, female;
Unbalanced line‑level audio inputs (Summing on channels 1 + 2 and channels 3 + 4);
Maximum Input Level: 2.24 Vrms, +7 dBV (+9.2 dBu) |
| AUDIO IN (BALANCED) |
(4) 3-pin 3.5 mm detachable terminal block;
Balanced line‑level audio inputs;
Channel pairs 1 - 2 and 3 - 4 can each be configured to operate as stereo channels or a downmixed mono channel;
Maximum Input Level: 7.75 Vrms, +20 dBu;
Input Impedance: 20k Ω |
| REMOTE |
(1) 2 pin 3.5 mm detachable terminal block;
Connect to dry contact closure to place amplifier in standby mode. |
| G |
(1) 6‑32 screw;
Chassis ground lug |
100‑240V~ 1.2-0.6A
50/60 Hz |
(1) IEC 60320 C14 main power inlet;
Mates with removable power cord, included |
| Controls & Indicators |
| PWR |
(1) White/Red LED;
White indicates amplifier is on and ready for use;
Red indicates amplifier is in standby |
| HI-Z |
(1) White LED;
Indicates when Hi-Z mode is enabled (70V or 100V);
Channels 1 - 2 and 3 - 4 are bridged and set to 70V or 100V operation |
| SIGNAL |
(4) White LEDs (one per input);
Indicates when an active input signal is present |
| FAULT |
(4) Red LEDs (one per input);
Indicates that the input channel is faulted or clipping |
| GAIN 1-4 |
(4) Screwdriver‑adjustable rotary controls, one per input channel;
Adjusts the input attenuation level for the corresponding input channel |
| LoZ Modes |
(2) Slide switches, one switch controlling channels 1 and 2, and one switch controlling channels 3 and 4;
Selects stereo, summed, or bridged operation
- STEREO: The input signal received on each channel is sent to its respective output for use in applications where left and right channel separation is required. The four GAIN controls are independently adjustable.
- SUM: The input signals sent to a channel pair (1 + 2 or 3 + 4) are summed and sent to their respective individual outputs. The four GAIN controls are independently adjustable.
- BRIDGE: The input signals sent to a channel pair (1 + 2 or 3 + 4) are summed and sent to a bridged output (1 + 2 or 3 + 4) for use in high-power applications. The GAIN 1 control adjusts the bridged 1 + 2 output, and the GAIN 3 control adjusts the bridged 3 + 4 output.
|
| Operations Mode |
(1) Slide switch;
Sets the amplifier for LoZ (4 or 8 Ω) or Hi-Z operation (70V or 100V) |
| Power Mode |
(1) Slide switch;
Selects "Power Saver" or "Always On" operation |
| Power |
| Main Power |
1.2-0.6A @ 100‑240VAC, 50/60 Hz |
| Power Consumption |
75 W, (4 channels driven at 1/8th output power, 4 Ω);
16 W, idle (Hi-Z mode);
0.365 W, power saver (230VAC/50 Hz) |
| Environmental |
| Temperature |
41 to 104°F (5° to 40°C) |
| Humidity |
10% to 90% RH (non‑condensing) |
| Heat Dissipation |
107 BTU/hr @ 4 Ω, all channels driven at 1/8th output power;
55 BTU/hr, all channels idle (Hi-Z mode);
1.2 BTU/hr in standby |
| Construction |
| Chassis |
Metal, convection cooled (fanless) |
| Front Panel |
Metal, black finish with polycarbonate label overlay |
| Mounting |
Freestanding, surface mount, or 1/2 width 1 RU 19 in. rack mountable;
Gangable with other Crestron modular AMP series products (adhesive feet, surface mounting, rack mounting, and ganging hardware all included) |
| Dimensions |
| Height |
1.75 in. (44 mm) without feet;
1.83 in. (46 mm) with feet |
| Width |
8.67 in. (220 mm) without mounting brackets
19.00 in. (483 mm) with mounting brackets |
| Depth |
11.04 in. (280 mm) |
| Weight |
| 5.3 lb (2.4 kg) |
| Compliance |
| ENERGY STAR, ErP (1275/2008/EC), Intertek® Listed for US and Canada, FCC Class B residential use |
