Crown Audio CTs 2-Channel - Manual (Page 47)

T O U R I N G
• 47
www.crownaudio.com
O ur patented variable impedance (VZ ® ) technology permits the Macro-Tech ® 3600VZ and the Macro-
Tech 5002VZ to dynamically adapt to both signal and load requirements, providing the best power
match to the widest range of loads. These models pack large amounts of power into a compact package
while achieving ultra-low distortion and without generating excessive heat. Detented controls, PIP™
expandability and comprehensive status indicators are included. The Macro-Tech 5002VZ’s universal
power supply adapts to available voltages around the world.
SPECIFICATIONS
Performance
Load Impedance: Safe with all types of loads, even reac-
tive 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.
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 mil-
liseconds; 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
amplifi er 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 fl ashes to show amplifi er output. If a
channel’s output waveform differs from its input by
0.05% or more, the indicator fl ashes 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 cur-
rent fl owing out the amplifi er, 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 (Nominal):
MA-3600VZ: 20 k ohms, balanced. 10 k ohms,
unbalanced.
MA-5002VZ: Greater than 10 k ohms, balanced.
Greater than 5 k ohms, 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 color-
coded binding posts.
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 color coded binding
posts.
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 amplifi ers 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 pat-
ented 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 tem-
perature, the transformer will automatically reset itself.
Controlled slew-rate voltage amplifi ers prevent RF
burnouts, and input overload protection is provided by
current-limiting resistance at the input.
Turn On: Four-second delay with no dangerous tran-
sients. Delay time can be changed in the
MA-3600VZ (contact Crown’s Technical Support
Group). MA-5002VZ also has “soft start” to avoide
tripping the AC circuit breaker by gradually bringing the
supplies up to full voltage.
Accessories
MA-5002VZ accepts Crown PIP2 modules. MA-3600VZ
accepts only the PIP-Lite module when fi tted with the
IQ-PIP-USP2 Adapter, available in limited quantity from
Crown’s Parts Department.
Construction
Steel chassis with durable black power-coat fi nish,
aluminum front panel with Lexan overlay, and specially
designed fl ow-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.
Regulatory Certifications
Other Applications
.
MA-3600VZ
only
MA-5002VZ
only
6/06 136707-1C