User manual ELECTRO-VOICE P1200 EDS

[. . . ] Continuous Rated Output Power (2020, 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 kHz, typical, at rated power; see Figure 2): <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 __________________ 1. Configured for constant-gain option, all Precision SeriesTM amplifiers, regardless of power rating, have a maximum voltage gain of 26 dB. 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 P1200 SPECIFICATION GRAPHICS FIGURE 1 -- P1200 Dimensions FIGURE 2 -- P1200 Intermodulation Distortion (SMPTE 60 Hz/7, 000 Hz) vs. Power FIGURE 3 -- P1200 Front and Rear Panel Power Consumption (both channels operating in dual mode, 1/8 power), 4 Ohms: 550 VA Dimensions, (See Figure 1) 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) DESCRIPTION The Electro-Voice P1200 Precision SeriesTM amplifier is a very-high-quality power amplifier designed to elicit maximum performance from any speaker system. [. . . ] 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. [. . . ] Dimensions shall be 88. 1 mm (3. 5 in. ) x 483 mm (19. 0 in. ) x 426 mm 16. 8 in. ) hwd. The power amplifier shall be the Electro-Voice P1200. UNIFORM LIMITED WARRANTY Electro-Voice products are guaranteed against malfunction due to defects in materials or workmanship for a specified period, as noted in the individual product-line statement(s) below, or in the individual product data sheet or owner's manual, beginning with the date of original purchase. If such malfunction occurs during the specified period, the product will be repaired or replaced (at our option) without charge. [. . . ]