18
English
LED indicators
Power: front panel
AC power consumption
120V~AC, 50/60Hz, 200W max
220-240V~AC, 50/60Hz, 200W max
Operating temperature range
(passively cooled, top and
bottom vents)
12º F to 120º F (-10º C to +50º C)
Special features
Remote volume control
Turn on/off muting
Clip detection and limiter
Short circuit protection
DC offset protection
Thermal limiting
Stable into reactive loads
RFI protection
International safety approvals under
UL-6500, CSA-E65, IEC-65
EMC CE compliance
Option card accessories
EQ cards: (Model 8 loudspeaker,
Model 25 loudspeaker, Model 32
loudspeaker, Model 1B Acoustimass
®
module)
Terminations
Inputs and outputs are quick connect
terminal blocks
Size
17"W x 10"D x 3
3
⁄4"H
(43.2 x 25.4 x 9.5 cm)
(desk mount)
19"W x 10"D x 3
3
⁄4"H
(48.3 x 25.4 x 9.5 cm)
(rack mount, chassis supported)
Weight
20 lb (9.1 kg)
Associated equipment
Rack mount kit
Power output
70V mono: 50W into 98Ω
100V mono: 50W into 196Ω
4Ω mode: 70W into 4Ω
Input sensitivity
315mV required to drive both channels
to full power in any mode
Input attenuation
0dB to -∞
Input/Output configurations
1. Mono into 4Ω load
2. Mono into 70/100V load
3. As an extension to the
AmPlus 100 amplifier
Input impedance
32kΩ balanced
11kΩ unbalanced
Line output impedance
600Ω
Line output distortion
≤0.1%
Frequency response
(active EQ bypassed)
4Ω outputs: 40Hz – 16kHz, ±1dB
70/100V outputs: 60Hz – 16kHz, ±1dB
THD @ rated power
4Ω outputs: ≤1% THD (40Hz – 16kHz)
70/100V outputs: ≤1% THD
(60Hz – 16kHz)
Hum and noise
Power amplifier outputs: 80dB below
maximum output with 4Ω load
Controls
Inputs 1 and 2, input attenuation, remote
volume, bass adjust effects bandwidth of
50Hz – 150Hz by 0 – 10dB.
Amplifier mode switch.
Front panel power switch.
AmPlus™ 50 Amplifier Specifications
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