| MPA 181T |
|
| Audio |
|---|
| Frequency response | |
| 8 ohm direct output | 20 Hz to 20 kHz, ±1.5 dB |
| 70 V output | 110 Hz to 20 kHz, +0.5/-3 dB |
| THD + Noise | 0.1% @ 1 kHz at nominal level (1 watt, 8 ohm load, or 70 V output) |
| S/N | >72 dB @ 20 Hz to 20 kHz at maximum output (unweighted) |
| CMRR | >80 dB @ 1 kHz, >70 dB @ 20 kHz |
| Bass adjustment | ±10 dB @ 100 Hz (reference) to 1 kHz (2 dB tolerance) |
| Treble adjustment | ±10 dB @ 10 kHz (reference) to 1 kHz (2 dB tolerance) |
|
| Audio input |
|---|
| Number/signal type | 1 stereo/mono, balanced/unbalanced input
2 stereo/mono, unbalanced inputs
(The three inputs are individually buffered and mixed together. Stereo signals are actively summed into a mono signal.) |
| Connectors | (1) 3.5 mm captive screw connector, 5 pole (main input)
(1) 3.5 mm mini audio jack (tip, ring, sleeve)
1 pair RCA |
| Impedance | >18k ohms unbalanced, >24k ohms balanced, DC coupled |
| Nominal level | +4 dBu (1.23 Vrms) balanced or -10 dBV (316 mVrms) unbalanced |
| Maximum level | |
| Level pot. at 11 o'clock | +6 dBV (unbalanced), +16 dBu (balanced) at 1% THD+N |
| Level pot. at 9 o'clock | +16 dBV (unbalanced), +23 dBu (balanced) at 1% THD+N |
| Input level sensitivity | -16 dBV (158 mV) from unbalanced input for maximum output (18 watts at 70 V output and with the level set to maximum) before clipping |
| NOTE | 0 dBu = 0.775 Vrms, 0 dBV = 1 Vrms, 0 dBV ≈ 2 dBu |
|
|
| Audio output |
|---|
| Number/signal type | 1 single channel (mono) 70 V output or 1 direct 4- or 8-ohm speaker output |
| Connectors | (1) 5 mm captive screw connector, 4 pole |
| Minimum load impedance | 2 ohms |
| Amplifier type | Class D |
| Continuous power with a full load and 1% THD |
| 70 V system | 18 watts (rms) |
| At 4 ohms | 14 watts (rms) |
| At 8 ohms | 8 watts (rms) |
| Damping factor | >30 (with a 4 ohm load) |
|
| Control/remote — amplifier |
|---|
| Control port | (1) 3.5 mm captive screw connector, 5 pole |
| Pin configuration | Pin 1 = +10 VDC, pin 2 = volume/mute control (variable voltage), pin 3 = GND |
| Volume control voltage range | 0 V (mute) to 10 V (maximum volume) |
|
| General |
|---|
| External Power supply | 100 VAC to 240 VAC, 50/60 Hz, external; to 12 VDC, 3 A (max.), regulated |
| Power input requirements | 12 VDC, up to 3 A |
| Ambient temperature/humidity | Storage: -40 to +158 °F (-40 to +70 °C) / 10% to 90%, noncondensing
Operating: +32 to +122 °F (0 to +50 °C) / 10% to 90%, noncondensing |
| Cooling | Convection, vents on top and sides |
| Mounting | |
| Rack mount | Yes, with optional 1U, 9.5" deep rack shelf (RSU 129, #60-190-01, or RSB 129, 60-604-01); or 1U, 6" deep rack shelf (RSU 126, #60-190-10 or RSB 126, 60-604-10) |
| Furniture mount | Yes, with optional MBU 125 mini under-desk mounting kit, part #70-077-01 |
| Pole mount | Yes, with optional mounting kits PMK 350, #70-563-02/-03, or PMK 450, #70-618-03 |
| Enclosure type | Metal |
| Enclosure dimensions | 1.7" H x 4.3" W x 6.0" D (1U high, quarter rack wide)
(4.3 cm H x 10.9 cm W x 15.2 cm D)
(Depth excludes connectors.) |
| Product weight | 1.2 lbs (0.5 kg) |
| Shipping weight | 6 lbs (3 kg) |
| Vibration | ISTA 1A in carton (International Safe Transit Association) |
| Regulatory compliance | |
| Safety | CE, CUL, UL
UL rated for use in plenum airspaces: meets UL 2043 for heat and smoke release, excluding the power supply; meets UL 60950 and UL 60065 for safety. |
| EMI/EMC | CE, C-tick, FCC Class A, ICES, VCCI |
| Product warranty | 3 years parts and labor |
| NOTE | All nominal levels are at ±10% |
|
| NOTE | Specifications are subject to change without notice. |
|
| (7.6-110508-D11) |