MVPA/VPA Amplifier User Manual
Page 3 of 11
21015 V1.1
1.
Specification
Power Requirements (AC / DC)
Amplifier chassis voltage requirements
230 volts AC 50/60Hz with automatic
reversion to 24VDC during AC failure
AC inrush current
(Chassis fitted with 4 x 60 Watt
PowerBlocs)
10A maximum for less than 1 second, non
repetitive (typically <7.5A)
1 x 60 Watt RMS PowerBloc
160VAC / 6.5ADC Max
2 x 60 Watt RMS PowerBloc
320VAC / 13ADC Max
3 x 60 Watt RMS PowerBloc
480VAC / 19.5ADC Max
4 x 60 Watt RMS PowerBloc
640VAC / 26ADC Max
Power Factor
0.85 at maximum power
Heat Dissipation (Watts)
240 Watt Amplifier (Full Power)
325 Watts
240 Watt Amplifier (Half Power)
300 Watts
240 Watt Amplifier (1/8
th
Power)
175 Watts
Automatic thermal shutdown
Gain reduction while heatsink exceeds
85 C
Audio / Electrical Characteristics
Input Impedance
10K ohms nominal, electronically balanced
Input Sensitivity
0dBu (775mV) for rated power
Power Bandwidth (-3dB)
100Hz – 20Khz
Distortion (THD)
Less than 1% at rated power, typically less
than 0.08% at 1Khz.
Noise
-80dB max
Fault Monitoring
Built in monitoring circuitry
(Fitted in MVPA models only)
Detection and display of individual
PowerBloc Fail, Mains Fail, Battery Fail
and Charger Fail. With general fault output
to Monitoring System (FMS).
Short circuit protection
Indefinite operation into short cct load
Mechanical
Dimensions (HxWxD)
133 (3U) x 483 x 310 (rack mount
19”frame)
Audio connections
Plug-in connectors with screw terminals
Mains connections
I.E.C. mains connector
DC supply connections
4-pin multiway connector
Amplifier Finish
Black
Reliability / Maintainability
MTBF (hours)
90,000 hours
MTTR (i.e. fit replacement amp bloc)
15 minutes
Environment
Operating temperature range ( C)
-5 C to 40 C
Relative Humidity
0 – 95%
