Electro-Voice 7200 User manual

7200
Two-Channel
Power Amplifier
• Low-profile, two-rack-space
chassis (3.5-in. chassis
height)
• Convection cooled for zero
fan noise
• Front-mounted gain
controls, clip and protect
LEDs and rack handles for
easy access
• Octal sockets accept EV
crossover and equalizer
modules for easy system
expansion
• 3-year warranty
SPECIFICATIONS
Conditions:
1. 0 dBu = 0.775 V rms
2. Dual-mode ratings are for each channel
3. Both channels operating at rated output
power unless noted
4. 120-volt ac line input voltage maintained
for all tests unless noted
Continuous Rated Output Power
(20-20,000 Hz at less than 0.1% THD,
both channels driven per EIA RS-490),
Dual Mode, 4 Ohms:
200 watts
Bridge Mode, 8 Ohms:
400 watts
Dual Mode, 8 Ohms:
125 watts
Bridge Mode, 16 Ohms:
250 watts
Continuous Rated Output Power to
Subwoofer (20-20,000 Hz at less than
0.1% THD, both channels driven per
EIA RS-490),),
Dual Mode, 4 Ohms:
215 watts
Bridge Mode, 8 Ohms:
435 watts
Dual Mode, 8 Ohms:
130 watts
Bridge Mode, 16 Ohms:
265 watts
Continuous Rated Output Power
(1 kHz, 1% THD, both channels driven per
EIA RS-490),
120 volts ac Line Voltage,
Dual Mode, 4 Ohms: > 230 watts
Bridge Mode, 8 Ohms: > 465 watts
Dual Mode, 8 Ohms: > 140 watts
Bridge Mode, 16 Ohms: > 285 watts
108 volts ac (10% sag),
Dual Mode, 4 Ohms: > 185 watts
Bridge Mode, 8 Ohms: > 370 watts
Dual Mode, 8 Ohms: > 110 watts
Bridge Mode, 16 Ohms: > 220 watts
100 volts ac (17% sag),
Dual Mode, 4 Ohms: > 155 watts
Bridge Mode, 8 Ohms: > 310 watts
Dual Mode, 8 Ohms: > 95 watts
Bridge Mode, 16 Ohms: > 190 watts
Headroom, Single Channel Mode
(before clip, at 1 kHz, 1% THD):
> 1 dB
Power Bandwidth (at 1 kHz, +0/–1 dBr,
where dBr equals rated output power in
any mode):
20-20,000 Hz
Frequency Response (at 1 kHz, 1 watt
output, +0/–3 dB):
10-50,000 Hz
Voltage Gain (at 1 kHz),
Dual Mode, 4 Ohms:
31 dB
Dual Mode, 8 Ohms:
32 dB
Bridge Mode, 8 Ohms:
37 dB
Bridge Mode, 16 Ohms:
38 dB
Input Sensitivity for Rated Output Power
(at 1 kHz, ±0.5 dB),
Dual Mode, 4 Ohms:
0 dBu (0.78 V rms)
Bridge Mode, 8 Ohms:
–0.25 dBu (0.78 V rms)
Dual Mode, 8 Ohms:
+0.5 dBu (0.89 V rms)
Bridge Mode, 16 Ohms:
+0.5 dBu (0.89 V rms)
Maximum Input Level (reference 1 kHz):
+20 dBu (7.75 V rms)
Input Impedance (reference 1 kHz),
Balanced:
> 30 kilohms
Unbalanced:
> 15 kilohms
Phase Response (at rated output power,
any mode),
at 20 Hz:
< +30°
at 20,000 Hz:
> –30°
THD (any mode, 30 kHz measurement
bandwidth):
< 0.1% (Typ. < 0.05%)
IMD [SMPTE 4:1] (Any mode):
< 0.1% (Typ. < 0.01%)
Slew Rate (at rated output power),
Dual Mode, 4 or 8 Ohms:
> 20 V/ µ sec
Bridge Mode, 8 or 16 Ohms:
> 25 V/ µ sec
Damping Factor, Dual Mode, 8 Ohms,
1 kHz:
> 100
Noise (below rated output power,
A-weighting filter, any mode,
50/60-Hz ac line frequency):
> 100 dB
Amplifier Protection:
Shortened output terminals
Over temperature
rf inteference
Load Protection:
Startup/shutdown transients
DC faults
Infrasonic signals
Cooling:
Convection (thermally equalized 3/16-inch
black anodized aluminum heatsink)
Output Topology:
True complementary symmetry

7200 SPECIFICATION GRAPHICS
FIGURE 1 — 7200 Dimensions
FIGURE 2 — Front and Back Panel

FIGURE 3 — 7200 Typical Input Connections FIGURE 4 — 7200 Typical Output Connections
DESCRIPTION
The Electro-Voice 7200 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 125 watts of con-
tinuous average power into 8 ohms or over
200 watts into 4 ohms over the full audio fre-
quencyrange.Inthebridgemode,theamplifier
can deliver more than 400 watts into an 8-ohm
load at less than 0.10% THD. The maximum
midbandoutputpoweris145wattsperchannel
into 8 ohms and 230 watts per channel into
4 ohms at less than 1% THD.
Eight output devices are utilized for a total
device power dissipation of 1,200 watts. Be-
causethelargeheatsinkareaallowsmorethan
adequate dissipation, the amplifier is convec-
tion cooled and performs in total silence.
Eachchannelisindependentlyprotectedagainst
excessiveoutputvoltage,excessivephaseshift,
radio-frequencyinterference,shortedloadsand
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-
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.
Theamplifierhas“protect”LEDsforeachchan-
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.
Power Cable Power
AWG DCR/ft Loss/ft Cross-Sectional DCR/meter Loss/meter
(GA) (W/ft) (watts/ft) area (mm2) (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 — 7200 Power Losses in Two-Wire Speaker Cable
Idle:
70 watts/0.238 kBTU/hr
One-Eighth Maximum Midband Power:
400 watts/1.364 kBTU/hr
One-Third Maximum Midband Power:
600 watts/2.047 kBTU/hr
Rated Output Power:
900 watts/3.070 kBTU/hr
Maximum Midband Power:
970 watts/3.309 kBTU/hr
Operating Temperature Range:
Up to 50 °C (122 °F) ambient
Dimensions,
Height: 88.9 mm (3.5 in.)
Width: 482.6 mm (19.0 in.)
Depth: 406.5 mm (16.6 in.)
Color:
Gray and black
Enclosure:
Rack mount chassis
16-GA steel
3/16-inch 5052 aluminum alloy front panel
Shipping Weight:
19.5 kg (43 lb)
Net Weight:
16.8 kg (37 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.
Output Type,
Dual Mode: Unbalanced, each channel
Bridge Mode: Balanced
Output Devices (8 devices),
Pdmax: 150 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 (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:
4-A/250-V (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),

ELECTRO-VOICE a MARK IV company 600 Cecil Street, Buchanan, Michigan 49107
MANUFACTURING PLANTS AT BUCHANAN, MI NEWPORT, TN SEVIERVILLE, TN OKLAHOMA CITY, OK GANANOQUE, ONT.
© Electro-Voice, Inc. 1995 Litho in U.S.A. Part Number 532233—9511
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 ex-
cessive output phase shift. The load shall simi-
larly be protected against infrasonic signals,
startup/shutdown transients, low ac line volt-
age, and dc.
Rear-mounted panel controls shall include a
two-positionmodeswitchforselectingbetween
thedualmonophonicmodeorthebridgedmono-
phonicmode.Input connectionsforeach 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-
natedpoweron/off indicator,individuallyillumi-
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:
7.75Vrms.Inputvoltageforratedoutputpower
into 4 ohms: 0.775 V rms. Rated output power
perchannel:greaterthan200wattsinto4ohms
from 20 Hz to 20 kHz at less than 0.10% THD;
greaterthan 125watts perchannel into 8ohms
from 20 Hz to 20 kHz at less than 0.05% THD;
greater than 400 watts into an 8-ohm bridged
load from 20 Hz to 20 kHz at less than 0.10%
THDwithchannel#1driven. Voltageamplifica-
tion in dual mode: 31 dB (bridged mode). Hum
and noise: greater than 100 dB (A weighted)
belowratedoutputpower.Frequencyresponse:
10 Hz to 50 kHz, +0/–3 dB at any output power
up to rated output power. Damping factor:
greater than 100 at any frequency up to 1 kHz
in dual mode with 8-ohm load.
Intermodulation distortion (SMPTE): less than
0.1% in any mode into 8 ohms. Crosstalk: less
than 70 dB below rated output power. Operat-
ing temperature: up to 50 °C (122 °F) ambient.
Dimensions (H x W x D): 3.5 in. x 19 in. x 16
in.(8.89cmx48.26cmx40.64cm).Netweight:
37 lbs (16.8 kg). Color: gray front panel with
black top, bottom, sides and rear with white
nomenclature.
The power amplifier shall be the Electro-Voice
7200.
UNIFORM LIMITED WARRANTY
Electro-Voiceproductsareguaranteed against
malfunctionduetodefectsinmaterialsorwork-
manship for a specified period, as noted in the
individualproduct-linestatement(s)below,orin
the individual product data sheet or owner’s
manual, beginning with the date of original
purchase.Ifsuchmalfunctionoccursduringthe
specifiedperiod, the product will be repaired or
replaced (at our option) without charge. The
product will be returned to the customer pre-
paid. Exclusions and Limitations: The Lim-
ited Warranty does not apply to: (a) exterior
finish or appearance; (b) certain specific items
described in the individual product-line
statement(s)below, or in the individual product
data sheet or owner’s manual; (c) malfunction
resulting from use or operation of the product
other than as specified in the product data
sheet or owner’s manual; (d) malfunction re-
sulting from misuse or abuse of the product; or
(e) malfunction occurring at any time after re-
pairshavebeenmadetotheproductbyanyone
otherthanElectro-Voiceoranyofitsauthorized
service representatives. Obtaining Warranty
Service: To obtain warranty service, a cus-
tomer must deliver the product, prepaid, to
Electro-Voice or any of its authorized service
representativestogetherwithproofofpurchase
of the product in the form of a bill of sale or
receipted invoice. A list of authorized service
representativesis availablefrom Electro-Voice
at 600 Cecil Street, Buchanan, MI 49107 (616/
695-6831 or 800/234-6831). Incidental and
Consequential Damages Excluded: Product
repair or replacement and return to the cus-
tomer are the only remedies provided to the
customer. Electro-Voice shall not be liable for
any incidental or consequential damages in-
cluding, without limitation, injury to persons or
property or loss of use. Some states do not
allow the exclusion or limitation of incidental or
consequentialdamagessotheabovelimitation
orexclusionmaynotapplytoyou.OtherRights:
This warranty gives you specific legal rights,
and you may also have other rights which vary
from state to state.
Electro-Voice Electronics are guaranteed
against malfunction due to defects in materials
or workmanship for a period of three (3) years
from the date of original purchase. Additional
details are included in the Uniform Limited
Warranty statement.
Service and repair address for this product:
Electro-Voice,Inc.,600CecilStreet,Buchanan,
Michigan 49107 (616/695-6831 or 800/234-
6831).
Specifications subject to change without no-
tice.