Specifications 2-1
130446-1 Rev. A
MA-5002VZ Service Manual
©2000 Crown International, Inc.
Specifications
The following applies to 120-VAC, 60-Hz units in Stereo mode with 8-ohm loads and an
input sensitivity of 26-dB gain unless otherwise specified. Specifications for units
supplied outside the U.S.A. may vary slightly at different AC voltages and frequencies.
Power
Output Power
Load Impedance: Safe with all types of loads. Rated for 2 to 8
ohms in Stereo, 4 to 16 ohms in Bridge-Mono and 1 to 4 ohms in
Parallel-Mono mode.
Voltage Gain to 1-kHz, 8-ohm rated output:
132:1 ±12% or 42 dB ±1 dB gain at 0.775 volt sensitivity;
71:1 ±12% or 37 dB ±1 dB gain at 1.4-volt sensitivity;
20:1 ±3% or 26 dB ±0.25 dB gain at the maximum level setting.
Required AC Mains: 50 or 60 Hz; 100-, 120-, 200-, 208-, 230-,
240- VAC (±10%).
AC Line Current,
Current, voltage and frequency requirements are provided on the
unit’s back panel.
At Idle: All units draw 90 watts or less.
AC Line Connector: 10 AWG cordset with NEMA TT30P plug is
provided on 120-VAC, 60-Hz North American units.
Performance
Frequency Response: ±0.1 dB from 20 Hz to 20 kHz at 1 watt (see
Figure 2.3).
Phase Response: ±10 degrees from 10 Hz to 20 kHz at 1 watt (see
Figure 2.2).
Signal-to-Noise Ratio,A-weighted:
Better than 105 dB below rated 1-kHz power.
Total Harmonic Distortion (THD): 1-kHz rated power, 0.05% or
less true THD.
Intermodulation Distortion (IMD): (60 Hz and 7 kHz at 4:1) Less
than 0.05% from rated power to 35 dB below rated power at 8
ohms.
Damping Factor: Greater than 1,000 from 10 Hz to 400 Hz (see
Figure 2.4).
Controlled Slew Rate: (Slew rates are limited to useful levels for
ultrasonic/RF protection.) Greater than 30 volts per microsecond.
Controls
Compressor: A three-position back-panel switch is used to control
each channel’s input compressor. The “fast” setting provides an
attack time of 4 milliseconds and a release time of 300 millisec-
onds; the “slow” setting provides an attack time of 12 milliseconds
and a release time of 600 milliseconds; the “off” setting defeats
output-driven compression.
Enable: A front-panel push button used to turn the amplifier on and
off.
Input Ground Lift: A two-position back-panel switch located on the
PIP2-FXQ used to isolate the input audio signal grounds from the
AC (chassis) ground.
Level: A front-panel rotary potentiometer for each channel with 31
detents used to control the output level.
Loudspeaker Offset Integration: A two-position back-panel switch
for each channel used to turn the loudspeaker protection circuitry
on and off. The circuitry protects against DC, off-center woofer
cone movement, and unwanted subsonic and ultrasonic frequen-
cies.
Sensitivity: A three-position back-panel switch for each channel
used to select input sensitivity: 0.775 volts or 1.4 volts for
standard 1-kHz power, or a 26 dB voltage gain.
Stereo/Mono: A three-position back-panel switch used to select
Stereo, Bridge-Mono or Parallel-Mono mode.
VZ Mode: A four-position switch for each channel inside the front-
panel used to control the switching mode of the VZ power supplies.
Indicators
Enable: An amber front-panel LED that shows the on/off status of
the low-voltage power supply.
Signal/IOC: A green front-panel LED for each channel that flashes
to show amplifier output. If a channel’s output waveform differs
from its input by 0.05% or more, the indicator flashes brightly to
show distortion.
ODEP: An amber front-panel LED for each channel that shows
thermal-dynamic energy reserve. Normally, each ODEP indicator is
lit to show available reserve energy. In the rare event that a channel
has no reserve, its indicator will dim in proportion to ODEP
limiting.
ILoad/ILimit: A two-color (green/red) LED for each channel that
shows load current and limit current. They glow green to indicate
load current flowing out the amplifier, and they turn red when
maximum current is being delivered to the load.
Input/Output
Input Connectors: Balanced three-pin XLR and balanced ¼-inch
(6.35-mm) TRS connectors are provided on the factory-installed
PIP2-FXQ module.
Input Impedance: Greater than 10 ohms, balanced. Greater than 5
ohms, unbalanced.
Input Sensitivity: Settings include 0.775 volts or 1.4 volts for
standard 1 kHz power, or a 26-dB voltage gain.
Output Connectors: A multifunction, high-current output block is
provided. Crown output blocks include three pairs of connectors
for each channel (a total of 12 connectors). This allows multiple
loudspeakers to be easily connected to each channel. High current
screw terminals and banana jacks are provided which accept spade
lugs, banana plugs or bare wire.
Output Impedance: Less than 10 milliohms in series with less than
2.5 microhenries(see Figure 2.5).
2-ohm Dual (per ch.)
1 kHz
Power
2,500W
2,000W
1,300W
5,000W
4,000W
2,155W
1,775W
1,090W
3,670W
8-ohm Bridge-Mono
4-ohm Bridge-Mono
8-ohm Dual (per ch.)
4-ohm Dual (per ch.)
*1 kHz Power: refers to maximum average power in watts
at 1 kHz with 0.1% THD.
**20 Hz– 20 kHz Power: refers to maximum average power
in watts from 20 Hz to 20 kHz with 0.1% THD.
MA-5002VZ
*
20 Hz– 20 kHz
Power
**
2 Specifications
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