Electro voice 7100 brochure
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7100 SPECIFICATION GRAPHICS FIGURE 1 - 7100 Dimensions FIGURE 2 - Front and Back Panels FIGURE 3 - 7100 Typical Input Connections FIGURE 4 - 7100 Typical Output Connections
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able 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, how- ever, the amplifier will resume normal opera- tion. The amplifier has protect LEDs for each chan- nel 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. ARCHITECTS AND ENGINEERS SPECIFICATIONS The power amplifier shall be a dual-channel model of solid-state design employing true complementary-symmetry output circuitry and capable of operating from a 100/120/200/220/ 240-V, 50/60-Hz ac line. The amplifier shall contain sensing circuitry to provide protection for the output transistors against over- temperature, excessive output voltage, radio- frequency interference, shorted loads and excessive output phase shift. The load shall similarly be protected against infrasonic sig- nals, startup/shutdown transients, low ac line voltage, and dc. Rear-mounted panel controls shall include a two-position mode switch for selecting between the dual monophonic mode or the bridged mono- phonic mode. Input connections for each chan- nel shall include an octal socket for use with optional electronic accessory modules, a 3-pin female XLR-type connector and 1/4-inch phone jack. Output connectors shall be 5-way binding posts. Front panel indicators shall include an illumi- nated power on/off indicator, individually illumi- nated protection-circuit-activation indicators (Protect) and clipping indicators (Clip). Front panel controls shall include a 31-detent gain control for each channel and an on/off switch. The power amplifier shall meet the following performance criteria: Maximum input voltage: 7.75 V rms. Input voltage for rated output power into 4 ohms: 0.775 rms. Rated output power per channel: greater than 100 watts into 4 ohms from 20 Hz to 20 kHz at less than 0.10% THD; greater than 75 watts per channel into 8 ohms from 20 Hz to 20 kHz at less than 0.05% THD; greater than 200 watts into an 8-ohm bridged load from 20 Hz to 20 kHz at less than 0.10% THD with one channel driven. Voltage amplifi- cation in dual mode: 28 dB. Hum and noise: greater than 100 dB (A weighted) below rated output power. Frequency response: 10 Hz to 50 kHz, +0/–3 dB at any output power up to rated Power Cable Power AWG DCR/ft Loss/ft Cross-Sectional DCR/meter Loss/meter (GA) (W/ft) (watts/ft) area (mm 2) (W/m) (watts/m) 6 0.00081 0.0126 13.30 0.00264 0.0412 8 0.00121 0.0189 8.36 0.00421 0.0657 10 0.00204 0.0318 5.26 0.00669 0.1044 12 0.00324 0.0506 3.31 0.01063 0.1658 14 0.00515 0.0804 2.08 0.01691 0.2636 16 0.00819 0.1278 1.31 0.02685 0.4181 18 0.01302 0.2031 0.82 0.04289 0.6665 20 0.02070 0.3226 0.52 0.06764 1.0480 22 0.03292 0.5122 0.33 0.10658 1.6434 TABLE 1 - 7100 Power Losses in Two-Wire Speaker Cable Enclosure: Rack mount chassis 16-GA steel 3/16-inch 5052 aluminum alloy front panel Shipping Weight: 9.97 kg (22.0 lb) Net Weight: 8.16 kg (18.2 lb) 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 one- third-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. DESCRIPTION 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 continu- ous average power into 8 ohms or over 100 watts into 4 ohms over the full audio fre- quency 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 dissi- pation, the amplifier is convection cooled and performs in total silence. The single rackspace (1.75 in.) chassis height makes for convenient installation. Each chan- nel is independently protected against exces- sive output voltage, excessive phase shift, radio-frequency interference, shorted loads and overtemperature. The load is protected against startup and shut- down transients, DC faults, low ac voltage and subsonic signals. A unique current-limiting circuit was designed specifically for the amplifier. It features a vari- 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 Tj max: 150 °C Controls and Switches: Mode switch-rear Input Level Controls (two)-front Power switch-front Front-Panel Indicators: Power LED Clip LEDs (two) Protect LEDs (two) Connections, Input: 1/4-inch phone (two) Female XLR-type connectors (two) Octal accessory sockets (two) (powered with ±15 volts dc at 25 mA) Output: 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) 100 V ac, 50/60 Hz model available Power Consumption/Heat Produced (both channels operating, dual mode, with 1 kHz sinewave input signal at stated output power into 4 ohm loads), 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 Dimensions, Height: 44.4 mm (1.75 in.) Width: 482.6 mm (19.0 in.) Depth: 325.1 mm (12.8 in.) Color: Gray and black