User guide

OPERATION MANUAL
5
20 SERIES GRAPHIC EQUALIZERS
2215-dualchannel15bandgraphicequalizer
Power Cord Receptacle: Connects AC power to the equalizer.
Power Switch: Switches the power on and off. Always make audio connections with the power switch in the OFF
position.
Input Connectors: Threetypesofinputconnectorsareprovidedforinputconnections:femalelockingXLRtype
connectors,1/4”tip-ring-sleevephonejackconnectors,andabarrierstrip.Themaximuminputlevelthattheequal-
izercanacceptis+22dBu(ref:0.775Vrms).
Output Connectors:Threetypesofoutputconnectorsareprovidedforoutputconnections:maleXLRtypecon-
nectors,1/4”tip-ring-sleevephonejackconnectorsandabarrierstrip.
Byremovingthejumperconnectingthetwoscrewsonthebarrierstrip,thechassis
groundisseparatedfromthecircuitgroundoftheequalizer.Thisissometimesnecessarytoprevent“groundloops”
inasoundsystem.Whenliftingthegroundstrap,youmustmakeaconnectionfromthecircuitground(
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+
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+
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Without Jumper in Place With Jumper in Place
jumper
optional
circuit
ground
chassis
ground
circuit
ground
chassis
ground
to system
ground
optional
WIRING CONNECTIONS WITH GROUND
Input
Cable
Output
Cable
Input
Cable
Output
Cable
) terminal
to some other ground point in your audio system in order for the equalizer to function properly.
installation Considerations
Hookups and Cabling: The20SeriesEqualizersaredesignedfornominal+4dBulevels.Theequalizerscanbe
usedwitheitherbalancedorunbalancedsources,andtheoutputscanbeusedwitheitherbalancedorunbalanced
loads,providedthepropercablingisused.
A balanced line is defined as two-conductor shielded cable with the two center conductors carrying the same signal
but of opposite polarity when referenced to ground. An unbalanced line is generally a single-conductor shielded
cable with the center conductor carrying the signal and the shield at ground potential.
Theequalizerhasaninputimpedanceof40kΩ balanced and 20kΩ unbalanced. This
makes the 20 Series Equalizers’ audio inputs suitable for use with virtually any low source impedance (under 2kΩ).
Theequalizer’soutputiscapableofdrivinga600Ωloadto+18dBu.Formaximum
humrejectionwithabalancedsource,avoidcommongroundingattheequalizer’sinputsandoutputs.Mostbal-
anced (3-conductor) cables have the shield connected at both ends. This can result in ground loops which cause
hum.Ifhumpersiststrydisconnectingtheshieldononeormoreofthecablesinthesystem,preferablyattheinput
ofadevice,notattheoutput.
5
#85-2563-P2 2215 REAR ART (12-17-96) buyoff
OUTPUT
- +
INPUT
- +
OUTPUT INPUT
PHONE:
TIP
RING
SLEEVE
XLR:
PIN 1
PIN 2
PIN 3
CONNECTOR POLARITY
INPUTOUTPUT
OUTPUT
- +
INPUT
- +
OUTPUT INPUT
INPUTOUTPUT
PROFESSIONAL PRODUCTS
A HARMAN INTERNATIONAL
COMPANY
SALT LAKE CITY, UTAH
MADE IN USA
MODEL 2215
EQUALIZER/LIMITER WITH
TYPE III NOISE REDUCTION
MANUFACTURED UNDER ONE OR MORE OF THE FOLLOWING
U.S. PATENTS: 4,234,804 4,316,107 4,329,598 4,331,931 4,403,199
4,409,500 4,425,551 4,434,380 4,454,433 4,471,324 4,473,793
OTHER PATENTS PENDING
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC
SHOCK DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE
RISK OF ELECTRIC SHOCK
DO NOT OPEN
ATTENTION: RISQUE DE CHOC ELECTRIQUE - NE PAS OUVRIR
CAUTION: TO REDUCE
THE RISK OF FIRE REPLACE
ONLY WITH SAME TYPE FUSE.
ATTENTION: UTILISER
UN FUSIBLE DE RECHANGE DE
MEME TYPE.
28 WATTS
POWER
100V 50/60Hz
120V 60Hz
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+
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+
++
Without Jumper in Place With Jumper in Place
jumper
optional
circuit
ground
chassis
ground
circuit
ground
chassis
ground
to system
ground
optional
WIRING CONNECTIONS WITH GROUND
Input
Cable
Output
Cable
Input
Cable
Output
Cable
Wiring Connections With Ground