Electro-Voice 7100

The Electro-Voice 7100 stereo power amplifier utilizes proven design concepts to provide an ultra-reliable amplifier with virtually unmatched performance characteristics. It achieves this success without increased complexity or cost, making it a real value.

Each channel delivers over 75 watts of continuous average power into 8 ohms or over 100 watts into 4 ohms over the full audio frequency range. In the bridge mode, the amplifier can deliver more than 200 watts into an 8-ohm load at less than 0.10% THD. The maximum midband output power is 100 watts per channel into 8 ohms and 145 watts per channel into 4 ohms at less than 1% THD. Four output devices are utilized for a total device power dissipation of 520 watts. Because the large heatsink area allows more than adequate dissipation, the amplifier is convection cooled and performs in total silence.

The single rackspace (1.75 in.) chassis height makes for convenient installation. Each channel is independently protected against excessive output voltage, excessive phase shift, radio-frequency interference, shorted loads and overtemperature.

The load is protected against startup and shutdown transients, DC faults, low ac voltage and subsonic signals.

A unique current-limiting circuit was designed specifically for the amplifier. It features a variable current limit which is a function of the output signal voltage. As a result, the amplifier can deliver the rated currents into rated loads, but substantially limits the current into low impedance or shorted loads (shorted output terminals). Once the short is removed, however, the amplifier will resume normal operation.

The amplifier has “protect” LEDs for each channel which illuminate if the amplifier goes into thermal protection or if an internal circuit fault develops. The amplifier has octal accessory sockets which will accommodate a variety of crossover and equalizer modules, simplifying system hookup and decreasing cost. These electronic modules are powered from a bipolar 15-volt supply in the amplifier.

The amplifier has a 31-position detented gain control and separate “clip” and “protect” LEDs for each channel.

The amplifier will operate at 120 or 240 volts 50/60 Hz. A separate model is available for 100-volt, 50/60-Hz operation.

Features:

• Space-saving, single-rackspace chassis (1.75-in. chassis height)
• Convection cooled for zero fan noise
• Front-mounted gain controls and headphone jack for easy access
• Octal sockets accept EV crossover and equalizer modules for easy system expansion
• 3-year warranty

Specifications:

• Output Type:
      * Dual Mode: Unbalanced, each channel
      * Bridge Mode: Balanced
• Output Devices (4 devices):
      * Pd max: 130 watts
      * Ic: 15 A dc
      * Vceo: 180 V dc
      * Tjmax: 150 °C
• Controls and Switches:
      * Mode switch—rear
      * Input Level Controls (two)—front
      * Power switch—front
• Front-Panel Indicators:
      * Power LED
      * Clip LEDs (2)
      * Protect LEDs (2)
• Input Connections:
      * 1/4-inch phone (two)
      * Female XLR-type connectors (two)
      * Octal accessory sockets (two)
      * (powered with ±15 volts dc at 25 mA)
• Output Connections: Five-way binding posts
• Power: 1.83 m (6 ft), three-wire, 16 GA power cord with NEMA 5-15 plug/IEC
• Fuse Type: T 4.0 A/250 V Slo-Blo® or equivalent (for 120 V ac use)
  Power Requirements:
      * 120 V ac, 50/60 Hz, 400 watts (configurable to 220/240 V ac)
• Power Consumption/Heat Produced:
      * Idle: 30 watts/0.238 kBTU/hr
      * One-Eighth Maximum Midband Power: 270 watts/1.364 kBTU/hr
      * One-Third Maximum Midband Power: 390 watts/2.047 kBTU/hr
      * Rated Output Power: 600 watts/3.070 kBTU/hr
      * Maximum Midband Power: 730 watts/3.309 kBTU/hr
• Operating Temperature Range: Up to 50 °C (122 °F) ambient
• Color: Gray and Black
• Enclosure:
      * Rack mount chassis
      * 16-GA steel
      * 3/16-inch 5052 aluminum alloy front panel
• Supplied Items:
      * Operating instructions and service manual
      * Four “U” jumper plugs for octal sockets
      * One 2-A/250-V fuse for 220/240-V ac use
• Optional Plug-In Accessory Modules:
      * APX 24-dB-per-octave Linkwitz-Riley crossover, switch selectable on ISO onethird- octave center frequencies from 50- 10,000 Hz
      * APX-2 crossover, as APX but with external nigh-pass output for other amplifiers
      * APX-200 dual-channel equalizer for FR200 speaker system
• Dimensions (H x W x D): 1.75" x 19" x 12.8" (44.4 x 482.6 x 325.1 mm)
• Weight: 18.2 lbs. (8.16 kg)