Specifications
TOURING
35
System Solutions: Accepts most PIP modules. Can accept
IQ-PIP LITE module when paired with the IQ-PIP USP2
Adapter Kit (some functionality will be limited).
Specifications
The following applies to units in Stereo mode with 8-ohm loads and rated input sensitivity
unless otherwise specified.
Performance
Frequency Response (at 1 watt) 20 Hz to 20 kHz: ±0.1 dB.
Phase Response (at 1 watt, 10 Hz to 20 kHz): ±10 degrees.
Signal-to-Noise Ratio (below rated full bandwidth power), A-weighted:
> 105 dB.
Total Harmonic Distortion (THD) (at rated power),
20 Hz to 1 kHz: < 0.05%
At 20 kHz: < 0.1%.
Intermodulation Distortion (IMD) (60 Hz and 7 kHz at 4:1) from 163 mil-
liwatts to full bandwidth power: < 0.05%.
Damping Factor (8 ohm) 10 Hz to 400 Hz: >1000.
Crosstalk (below rated power), 20 Hz to 1 kHz: > 85 dB.
Voltage Gain (at maximum level setting, ±6%)
MA-602: 35-dB gain at 0.775-volt sensitivity; 30-dB gain at 1.4-volt
sensitivity.
MA-1202: 36-dB gain at 0.775-volt sensitivity; 31-dB gain at 1.4-volt
sensitivity.
MA-2402: 38-dB gain at 0.775-volt sensitivity; 33-dB gain at 1.4-volt
sensitivity.
Controlled Slew Rate: >13 volts/microsecond.
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.
Required AC Mains (±10%, –15%): 50 /60Hz, 100-240VAC.
Power Draw at Idle: 100 watts or less.
Controls
Enable: A front panel push button used to turn the amplifier on and off.
Level: A front panel rotary control for each channel with 31 detents used
to control the output level.
Stereo/Mono: A three-position back panel switch used to select Stereo,
Bridge-Mono or Parallel-Mono mode.
Sensitivity: A three-position switch inside the PIP compartment 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.
Reset (Macro-Tech 2402 only): A back-panel push button for each
channel, used to reset the circuit breaker that protects each power
supply.
Input Ground Lift: This switch on the PIP2-FXQ is used to isloate input
signal grounds from chassis grond to prevent ground loops.
Indicators
(all located on front panel)
Enable: This amber indicator shows the on/off status of the low-voltage
power supply.
Signal/IOC: Each channel has a green indicator 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 indicator 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. An ODEP indicator
may also turn off under other conditions.
Input/Output
Input Connectors: Factory-installed PIP2-FXQ provides one 3-pin female
XLR connector for each channel in parallel with one 1/4-inch phone
jack connector for each channel.
Input Impedance: (nominally balanced, nominally unbalanced): 20 k
ohms, 10 k ohms.
Output Connectors: Two sets of 5-way, color-coded binding posts for
banana plugs, spade lugs or bare wire (European models do not
accept banana plugs).
DC Output Offset (shorted input): ±10 millivolts.
Output Signal: Stereo, unbalanced, two-channel.
Protection
Macro-Tech amplifiers are protected against shorted, open or mismatched
loads; overloaded power supplies; excessive temperature, chain destruc-
tion phenomena, input overload damage and high-frequency blowups.
They also protect loudspeakers from input/output DC and turn-on/turn-off
transients.
Construction
Ventilation: Flow-through ventilation from front to side panels.
Cooling: Internal heat sinks with forced-air cooling for rapid, uniform heat
dissipation.
Dimensions: EIA Standard 19-inch (48.3-cm) rack mount width (EIA RS-
310-B), 3.5-inch (8.9-cm) height and 16-inch (40.6-cm) depth behind
the mounting surface.
Weight
Net Weight,
MA-602: 39 lbs. 9 oz. (17.9 kg);
MA-1202: 44 lbs. 1 oz. (20.0 kg);
MA-2402: 51 lbs. 12 oz. (23.5 kg).
Shipping Weight,
MA-602: 44 lbs. (19.9 kg);
MA-1202: 47 lbs. (21.3 kg);
MA-2402: 65 lbs. (29.5 kg).
Accessories: Cooling fan option, level control shaft lock.
Other Applications:
®
Regulatory Certifications:
R
The Macro-Tech
®
02 Series amplifiers deliver superior sonic
accuracy and enormous amounts of power from a low-profile
design—perfect for touring and fixed installations. Crown’s
patented ODEP
®
(Output Device Emulation Protection) and
Grounded Bridge™ output circuitry enhance reliability and vir-
tually eliminate distortion. Dual, Bridge-Mono or Parallel-Mono
modes allow you to optimize power to your loads, while IOC
(Input/Output Comparator) circuitry acts as a supersensitive
distortion meter, giving proof of distortion-free performance.