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Specifications: |
Power
- Load Impedance: Safe with all types of loads, even reactive
ones. MA-3600VZ is rated for 2 to16 ohms in Stereo.
MA-5002VZ is rated for 2 to 8 ohms in Stereo. Both
amplifi ers are rated for 4 to 16 ohms in Bridge-Mono and
1 to 4 ohms in Parallel-Mono mode.
- Voltage Gain to 8 ohm load at rated output at 1 kHz,
maximum level setting:
- MA-3600VZ:
124.6:1 ±6% or 41.9 dB ±0.5 dB at 0.775 volt sensitivity.
69.2:1 ± 6% or 36.8 dB ±0.5 dB at 1.4 volt sensitivity.
20:1 ±6% or 26 dB ±0.5 dB at +26 dB sensitivity.
- MA-5002VZ:
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 (MA-3600VZ): 50/60 Hz; 100, 120, and 230VAC (±10%) units are available. 230VAC, 50/60 Hz units can be used with 220 and 240VAC. All versions draw 90 watts or less at idle. 100VAC and 120VAC units can draw up to 30 amps; 230VAC units can draw up to 15 amps. Current, voltage and frequency requirements are provided on unit’s back panel.
- Required AC Mains (MA-5002VZ): 50 or 60 Hz; 100, 120, 200, 208, 230, 240VAC (±10%). All units draw 90 watts or less at idle. Current, voltage and frequency requirements are provided on unit’s back panel.
AC Line Connector:
MA-3600VZ: NEMA TT30P.
MA-5002VZ: 10 AWG cordset with NEMA TT30P plug is provided on 120VAC, 60 Hz North American units.
Performance
- Frequency Response: ±0.1 dB from 20 Hz to 20 kHz at 1 watt.
- Phase Response: ±10 degrees from 10 Hz to 20 kHz at 1 watt.
- Signal-to-Noise Ratio: > 105 dB A-weighted or 100 dB unweighted below rated power, 20 Hz - 20 kHz.
- Total Harmonic Distortion (THD):
MA-3600VZ: At full bandwidth power, < 0.05% from 20 Hz to 1 kHz increasing linearly to < 0.1% at 20 kHz.
MA-5002VZ: 1 kHz rated power, 0.05% or less true THD.
- Intermodulation Distortion (IMD): (60 Hz and 7 kHz at 4:1)
MA-3600VZ: Less than 0.05% from 368 milliwatts to full bandwidth power.
MA-5002VZ: Less than 0.05% from rated power to 35 dB below rated power at 8 ohms.
- Damping Factor: > 1,000 from 10 Hz to 400 Hz.
- Slew Rate: (Slew rates are limited to useful levels for ultrasonic/RF protection.) > 30 volts per microsecond.
Controls
- Compressor (MA-5002VZ only): 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 milliseconds; the "slow" setting provides an attack time of 12 milliseconds and a release time of 600 milliseconds; the "off" setting defeats outputdriven compression.
- Enable: A front-panel push button used to turn the amplifier on and off.
- Input Ground Lift (MA-5002VZ only): 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 is used to control the output level.
- Loudspeaker Offset Integration (MA-5002VZ only): 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 frequencies.
- Stereo/Mono: A three-position back-panel switch used to select Stereo, Bridge-Mono or Parallel-Mono mode.
- Sensitivity: A three-position switch used to select the input sensitivity for both channels: 0.775 volts or 1.4
volts for standard 1 kHz power, or a 26 dB voltage gain. MA-3600VZ switch is inside the PIP compartment; MA-5002VZ switch is on the back panel.
- VZ Mode (MA-5002VZ only): A four-position switch for each channel inside the front-panel used to control the switching mode of the VZ power supplies.
- Reset (MA-5002VZ only): A back-panel push button for each channel used to reset the circuit breaker that protects each power supply. 100 and 120 VAC units have 15 amp circuit breakers; 230 VAC units have 7.5 amp circuit breakers.
Indicators
- Enable: An amber front-panel indicator that shows the on/off status of the low-voltage power supply.
- Signal/IOC: A green front-panel indicator 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. This function provides proof of distortion free performance. In Parallel-Mono mode, the Channel 2 light stays on.
- ODEP: Each channel has an amber front panel indicator that shows thermal-dynamic energy reserve. Normally, each ODEP indicator is lit to show available reserve energy. The indicator will dim proportionally as the energy reserve for its channel descreases. In the rare event that a channel has no reserve, its indicator will turn off and the ODEP circuitry will limit the channel’s output drive.
- ILoad/ILimit (MA-5002VZ only): A two-color (green/ red) LED for each channel that shows load current and limit current. They glow green to indicate load current fl owing out the amplifier, and they turn red when maximum current is being delivered to the load.
Input/Output
- Input Connector: Two balanced 1/4 inch TRS (6.35-mm) phone jacks on the back panel and two balanced three-pin female XLR connectors on the factory- installed PIP-FX (MA-3600VZ) or PIP-FXQ (MA- 5002VZ) module.
- Input Impedance:
MA-3600VZ: Nominally 20 k ohms, balanced. Nominally 10 k ohms, unbalanced.
MA-5002VZ: Greater than 10 kohms, balanced. Greater than 5 kohms, unbalanced.
- Maximum Input Level: 13 volts peak.
- Input Sensitivity: 0.775 volt for standard 1 kHz power, 1.4 volts for standard 1 kHz power, or a 26 dB voltage
gain.
- Output Connectors (MA-3600VZ): Two sets of colorcoded 5-way binding posts (for banana plugs, spade lugs or bare wire).
- Output Connectors (MA-5002VZ): 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 microhenries (MA-3600VZ) or 2.5 microhenries (MA-5002VZ).
- DC Output Offset: (Shorted input) ±10 millivolts.
Output Signal
- Stereo: Unbalanced, two-channel.
- Bridge-Mono: Balanced, single-channel. Channel 1 controls are active; Channel 2 should not be used.
- Parallel-Mono: Unbalanced, single-channel. Channel 1 controls are active; Channel 2 controls are bypassed.
Protection
- Macro-Tech amplifiers are protected against shorted, open or mismatched loads; overloaded power supplies; excessive temperature; chain destruction phenomena; input overload damage; and high-frequency blowups. They also protect loudspeakers from input/output DC and turn-on/turn-off transients. If unreasonable operating conditions occur, the patented ODEP circuitry will proportionally limit the drive level to protect the output transistor stages, particularly in the case of elevated temperature. Transformer overheating will result in a temporary shutdown of the affected channel; when it has cooled to a safe temperature, the transformer will automatically reset itself. Controlled slew-rate voltage amplifiers prevent RF burnouts, and input overload protection is provided by current-limiting resistance at the input
- Turn On: Four-second delay with no dangerous transients. Delay time can be changed in the MA-3600VZ (contact Crown’s Technical Support Group). MA-5002VZ also has "soft start" to avoid tripping the AC circuit breaker by gradually bringing the supplies up to full voltage.
Accessories
- Crown PIP modules (MA-3600VZ) and PIP2 modules (MA-5002VZ) including IQ-PIP modules.
Construction
- Steel chassis with durable black power-coat finish, aluminum front panel with Lexan overlay, and specially designed flow-through ventilation from front to side (Ma-3600VZ) or back (MA-5002VZ) panels.
- Cooling: Internal heat sinks with forced-air cooling (MA-3600VZ) or on-demand, proportional cooling (MA-5002VZ), custom heat diffusers, and patented circuitry for rapid, uniform heat dissipation.
- Dimensions: EIA Standard 19-inch (48.3-cm) rack mount width (EIA RS-310-B), 3.5 inches (8.9 cm) (MA-3600VZ) or 5.2 inches (13.3 cm) high, 16 inches (40.6 cm) (MA-3600VZ) or 15.875 inches (40.3 cm) (MA-5002VZ) deep behind the mounting surface and 2.5-inch (6.3-cm) protrusion in front of the mounting surface.
- Center of Gravity: Approximately 6 inches (15.2 cm) behind front mounting surface.
- Weight:
MA-3600VZ (shipping weight):
120VAC, 60 Hz Units: 63 lb, 10 oz (28.9 kg).
100VAC International Units: 63 lb, 0.5 oz (28.6 kg).
120VAC International Units: 63 lb, 10 oz (28.9 kg).
230VAC International Units: 61 lb, 15 oz (28.1 kg).
MA-5002VZ: 77 lb, 9 oz (35.2 kg) net; 88 lb, 10 oz (40.2 kg) shipping weight.
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