Ev P1200 Power Amplifier 2x550 @4Ohms THX Approved 2U 37LBS

EV P1200 Details

Precision Series™ Power Amplifiers P1200

650 watts per channel at 2 ohms Compact, two-rack-space chassis Neutrik Speakon® output connectors allow use of heavy-gauge speaker wire for low-loss connections

• 370 watts per channel at 8 ohms,
• 550 watts per channel at 4 ohms,
• 650 watts per channel at 2 ohms
• Compact, two-rack-space chassis
• Neutrik Speakon® output connectors allow use of heavy-gauge speaker wire for low-loss connections
• Three-year parts-and-labor warranty

The Electro-Voice P1200 Precision SeriesTM amplifier is a very-high-quality power amplifier designed to elicit maximum performance from any speaker system. Its ultralow distortion and powerful amplifiers ensure that program material will be amplified very accurately. Each channel of the P1200 delivers more than 350 watts continuous average power into 8 ohms, 500 watts into 4 ohms and 600 watts into 2 ohms over the full audio frequency range. In the bridge mode, the amplifier can deliver more than 740 watts into 8 ohms and 1,300 watts into 4 ohms at less than 1% THD. The power supply, with its large toroidal transformer, gives the amplifier impressive headroom and current output. The P1200 contains 20 high-power output devices with 5,000 watts of dissipation capability. These devices are protected from overheating by two, three-speed, temperature-sensitive fans. The fans are quiet enough to permit use of the P1200 in noise-sensitive applications such as recording studios and houses of worship. The output devices are mounted to a massive, extruded-aluminum heat sink that is engineered to minimize thermal gradients and allow the amplifier to operate safely into low-impedance loads. The output devices have a maximum junction temperature of 200 °C (392 °F), so high operational temperatures present no problems. The output devices are mounted directly to the heat sink without mica insulators to ensure better dissipation of heat. Many electronic circuit innovations exist in the P1200. Among the most novel of these circuits is the Dual Differential Discrete TopologyTM. This circuit is part of the front end of the amplifier and uses discrete electrical components instead of integrated circuits and is fully symmetrical for both polarities. The P1200 has sophisticated protection circuits that guard it and the load from problems. Protection circuits guard against overload, overtemperature, shorted outputs, radio-frequency interference and dc faults. The output devices are protected against damage from reverse feeding of electrical energy (back EMF) and are switched on via relays to avoid transients which could damage speakers.

The P1200 has built-in limiters to protect speakers from the deleterious effects of amplifier clipping. The limiter’s action is governed by very sophisticated input/output comparators which have acoustically optimized time constants to preserve the integrity of the source. The limiter’s time constants are switchable fast/ slow, so the limiter may be matched to the application for which the amplifier is being used. The P1200 has built-in switchable high- and low-cut filters. These filters attenuate infrasonic and ultrahigh-frequency signals, preventing them from being amplified; this allows more effective use of the amplifier’s power and adds a measure of load protection. These filters are switchable on/off for use in applications utilizing frontend units (like crossovers or equalizers) which have these filters built-in. A multifunction display keeps the user informed of the operating status of the amplifier. Separate LED displays for each channel show power on, input signal, output signal, limiter on and protection active. The P1200 has electronically balanced XLRtype input and output connectors that allow easy, problem-free connections and signal routing. The P1200 has an input routing switch that allows selection of either normal dual-channel operation, or parallel mono operation, which routes an input to both channels but still allows for independent level control. The P1200 also has a constant-gain option which allows the voltage gain to be fixed. This permits different amplifiers to be used in fixed installations without rebalancing, and ensures headroom is not wasted. The P1200’s output connectors are professional Neutrik Speakon® connectors which provide a sturdy, reliable connection and allow use of heavy wire for loss-free signal transmission. There are separate output connectors for channels A and B, and for the bridge mode. The bridge-mode connector is sealed with a plastic cover to prevent connection errors. To prevent ground loops from occurring, the P1200 is equipped with a ground-lift switch. When the amplifier is operated in a rack with units of different ground potential, the switch may be adjusted to eliminate hum. Calibrated, detented potentiometers on the front panel regulate the gain of the P1200. The panel nomenclature shows the amount of attenuation accurately. The P1200 also has a constant-gain option which, with input level controls full clockwise, provides a 26-dB voltage gain that is identical to that of all Electro-Voice Precision SeriesTM amplifiers in the constant-gain option, regardless of power rating. This makes it possible to exchange amplifiers of different power ratings without upsetting delivered sound pressure levels or spectral balances. The Electro-Voice P1200 is the choice for serious, professional amplification applications which require optimum sound quality, speaker protection, and the highest level of construction quality and long-term reliability.

EV P1200 Specs

SPECIFICATIONS
Conditions:
1. 0 dBu = 0.775 V rms.
2. Dual-mode ratings are for each channel, both operating, unless noted.
3. 120-volt ac line voltage maintained throughout testing. Continuous Rated Output Power (20- 20,000 Hz at less than 0.1% THD, both channels driven per EIA RS-490), Dual Mode,
2 Ohms: 600 watts Bridged Mode,
4 Ohms: 1,200 watts Dual Mode,
4 Ohms: 500 watts Bridged Mode, 8 Ohms: 1,000 watts
Dual Mode, 8 Ohms: 350 watts
Continuous Rated Output Power (1 kHz, 1% THD, both channels driven per EIA RS-490),
Dual Mode, 2 Ohms: 650 watts Bridged Mode, 4 Ohms: 1,300 watts Dual Mode, 4 Ohms: 550 watts Bridged Mode, 8 Ohms: 1,100 watts
Dual Mode, 8 Ohms: 370 watts Power Bandwidth (+0/–1 dB, reference 1 kHz), Dual Mode, 4 Ohms: 20-20,000 Hz Bridged Mode, 8 Ohms: 20-20,000 Hz
Dual Mode, 8 Ohms: 20-20,000 Hz Frequency Response (–1 dB, reference 1 kHz/1 watt): 10-30,000 Hz
Voltage Gain, 1 kHz, Input Level Controls Full Clockwise, Constant-Gain Option:1 26 dB
Input Sensitivity, 1 kHz, Dual Mode for 550 Watts into 4 Ohms: 0 dBu (775 mV)
Maximum Input Level (reference 1 kHz): +20 dBu (7.75 V)
Input Impedance (per channel, 20-20,000 Hz), Balanced: 20 kilohms
Phase Response (at rated power, any mode, 10-30,000 Hz): ±22.5 degrees
THD Plus Noise at 1 kHz (at rated power, measurement bandwidth 80 kHz): <0.01%
IMD (SMPTE) (60 Hz/7 ): <0.01%
Rise Time (10% to 90% at rated power, any mode): <2.5 microseconds Slew Rate, Any Mode: >30 V/microsecond Damping Factor, Any Mode: >300
Amplifier Protection: Excessive output voltage; shorted loads; excessive phase shift; rf interference; overtemperature; excessive back EMF; In-rush current limiter
Load Protection: Start-up/shutdown transients; dc fault; infrasonic signals; low ac line voltage; nonlinear signal limiter
Output Topology: True complementary symmetry with ungrounded collectors (no mica insulators means better heat transfer) Output Devices,
Total Number: 20 devices Pd(max) Rating: 250 watts Ic (collector current): 16 amps dc Tj(max): 200 °C (392 °F) Controls and Switches,
Rear: Hi-Lo-Cut Filter(On/Off); Bridged Mode switch (Bridged/Normal); Limiter mode (Fast/Slow); Circuit ^ To Chassis Switch (Grounded/Ungrounded); Input Routing (Parallel Mono or Dual Stereo)
Front: Two calibrated input level controls; power switch
Front-Panel Indicators: Five LED’s per channel (10 total) for power on, input signal; output signal; limiter on and protect on Connections,
Input:
3-pin female XLR-type connectors for each channel in parallel with a 3-pin male XLR-type output connector for easy signal routing; the XLR connectors are wired according to the IEC 268 standard: pin 1 shield, pin 2 positive, pin 3 negative
Output: Neutrik Speakon® NL4MP for channels A, B and for bridged mode
Power: 14-gauge, 3-wire, permanently attached power cable;
Operating Voltage: 120 V, 60 Hz ac __________________
1. Configured for constant-gain option, all Precision SeriesTM amplifiers, regardless of power rating, have a maximum voltage gain of 26 dB.

Power Consumption (both channels operating in dual mode, 1/8 power),
4 Ohms: 550 VA
Dimensions,
Height: 88.1 mm (3.5 in.)
Width: 483 mm (19.0 in.)
Depth: 426 mm (16.8 in.)
Color: Gray
Net Weight: 16 kg (36 lb)
Shipping Weight: 17 kg (37.5 lb)

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EV P1200 Power Amplifier 2x550 @4Ohms