Crown MA-2402 AE Macro-Tech Anniversary Power Amp

Limited Edition, commemorative power amp.

Having recently crossed its 60th year and more than two decades of producing the industry-standard Macro-Tech Series of power amplifiers, Crown International is commemorating both milestones with a special, one-time production of the Crown MA-2402 AE Macro-Tech Anniversary Power Amp.
It features a visually striking, copper-plated front panel (including handles, knobs, buttons, etc.) and is shipped in a custom wood crate. A special brochure chronicling the history of the product from its initial concept through today will also accompany this amp. It will also include a specification sheet, detailing the actual benchmarked performance of that specific amplifier, signed and numbered by Crown Senior VP of Research Gerald Stanley, whose patented technologies and innovative design philosophies ultimately made the Macro-Tech Series a global success. A very limited quantity of the MA-2402 AE amplifiers will be produced - only 600 in total will be available worldwide.

The Crown MA-2402AE Macro Tech Anniversary Power Amp is modeled after the Macro-Tech Series of power amps, that are known to fit applications so well, that they are deemed a classic. The term is synonymous with the Crown Macro-Tech Series of power amplifiers. That product line, and its predecessor Micro-Tech, sparked innovative technologies that provided lower distortion, less thermal stress, higher output power, greater reliability, more power density and amazing audio quality. Like all Crown amps, the defining characteristic of the Macro-Tech Series is sonic accuracy. A tight, rock-solid low end, with smooth, detailed highs and a well-defined midrange. In short, one of the most accurate reproductions, of an audio signal, you've ever heard. Crown puts quality of sound above all else, so their amplifiers are some of the most coveted in the business.

Crown MA-2402 AE Macro-Tech Anniversary Power Amp Features:

Copper-plated front panel (including handles, knobs, buttons, etc.)
Shipped in a custom wood crate
Special brochure chronicling the history of the product from its initial concept through today
Specification sheet, detailing the actual benchmarked performance of that specific amplifier, signed and numbered by Crown Senior VP of Research Gerald Stanley
A very limited quantity of these amplifiers will be produced - only 600 in total will be available worldwide
2-ohm dual (per ch.): 1,050W @ 1kHz power, 850W @ 20 Hz-20 kHz power
4-ohm dual (per ch.): 800W @ 1kHz power, 750W @ 20 Hz-20 kHz power
8-ohm dual (per ch.): 520W @ 1kHz power, 505W @ 20 Hz-20 kHz power
4-ohm bridge-mono: 2,070W @ 1kHz power, 1,670W @ 20 Hz-20 kHz power
8-ohm bridge-mono: ,1585W @ 1kHz power, 1,485W @ 20 Hz-20 kHz power
Load Impedance: Safe with all types of loads. Rated for 2 to 16 ohms in Stereo, 4 to 16 ohms in Bridge-Mono and 1 to 4 ohms in Parallel-Mono mode.
Required AC Mains: 50/60 Hz; 100, 120, 220 and 240 VAC (10%) units are available. All draw 100 watts or less at idle. Current, voltage and frequency requirements are provided on the units back panel.
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: A-weighted: Better than 105 dB below rated full bandwidth power.
20 Hz to 20 kHz: Better than 100 dB below full bandwidth power.
Total Harmonic Distortion (THD) at full bandwidth power: Less than 0.05% from 20 Hz to 1 kHz increasing linearly to 0.1% at 20 kHz.
Inter-modulation Distortion (IMD): (60 Hz and 7 kHz at 4:1) Less than 0.05% from 163 mW to full bandwidth power.
Damping Factor: Greater than 1,000 from 10 Hz to 400 Hz.
Slew Rate: (Slew rates are limited to useful levels for ultrasonic/RF protection). Greater than 13 volts per microsecond.
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 1kHz power, or a 26 dB voltage gain.
Reset: 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 isolate input signal grounds from chassis ground to prevent ground loops.
Indicators
Indicators
Enable: This amber front panel indicator shows the on/off status of the low-voltage power supply.
Signal/IOC: Each channel has a green front panel indicator that flashes to show amplifier output. If a channels output waveform differs from its input by 0.05% or more, the indicator flashes brightly to show distortion. This function provides proof of dis
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. In the rare event that a channel has no reserve, its indicator will dim in proportion t
Input/Output
Input Connector: Two balanced 1/4-inch phone jacks on the back panel and two balanced three-pin female XLR connectors on the factory-installed PIP2-FXQ.
Input Impedance: Nominally 20 k ohms, balanced. Nominally 10 k ohms, unbalanced.
Input Sensitivity: Settings include 0.775 volts or 1.4volts for standard 1 kHz power, or a 26 dB voltage gain.
Output Connectors: Two sets of color-coded 5-way binding posts (for banana plugs, spade lugs or bare wire).
Output Impedance: Less than 10 milliohms in series with less than 2 microhenries.
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
Construction
Steel chassis with durable black finish, aluminum front panel with Lexan overlay, and specially designed flow-through ventilation from front to side panels.
Cooling: Internal heat sinks with forced-air cooling for rapid, uniform heat dissipation.
Dimensions: Standard 19" (48.3-cm) rack mount width (EIA RS-310-B), 3.5" (8.9-cm) height, 16" (40.6-cm) depth behind the mounting surface and 2.5" (6.3- cm) protrusion in front of the mounting surface.
Approximate Weight: Center of gravity is 6" (15.2cm) behind front mounting surface.
120 VAC, 60 Hz Units:
Macro-Tech 2402: 51lbs, 12oz (23.5kg) net; 65lbs (29.5 kg) shipping weight.
International Units:
Macro-Tech 2402: 48lbs, 15oz (22.2kg) net; 57lbs, 6oz (26.0 kg) shipping weight.