Crate Amplifiers KX-220 User Manual

User’s Guide

for the

CRATE

KX-220

Stereo Keyboard Amplifier

Please read this user’s

guide before using your

new amplifier!

2

THIS EQUIPMENT HAS BEEN DESIGNED AND
ENGINEERED TO PROVIDE SAFE AND RELIABLE
OPERATION. IN ORDER TO PROLONG THE LIFE
OF THE UNIT AND PREVENT ACCIDENTAL DAM­AGES OR INJURY , PLEASE FOLLOW THESE PRE­CAUTIONARY GUIDELINES:

CAUTION: TO REDUCE THE RISK OF ELECTRIC

SHOCK, DO NOT OPEN CHASSIS; DO NOT
DEFEAT OR REMOVE THE GROUND PIN OF THE
POWER CORD; CONNECT ONLYTO A PROPERLY
GROUNDED AC POWER OUTLET.

WARNING: TO REDUCE THE RISK OF FIRE OR
ELECTRIC SHOCK, DO NOT EXPOSE THIS EQUIP­MENT TO RAIN OR MOISTURE.

CAUTION: NO USER-SERVICEABLE PARTS
INSIDE. REFER SERVICING TO QUALIFIED SER­VICE PERSONNEL.

CAUTION: OUR AMPLIFIERS ARE CAPABLE OF
PRODUCING HIGH SOUND PRESSURE LEVELS.
CONTINUED EXPOSURE TO HIGH SOUND PRES­SURE LEVELS CAN CAUSE PERMANENT HEAR­ING IMPAIRMENT OR LOSS. USER CAUTION IS
ADVISED AND EAR PROTECTION IS RECOM­MENDED IF UNIT IS OPERATED AT HIGH VOLUME.

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK,

DO NOT REMOVE COVER.

NO USER-SERVICEABLE PARTS INSIDE.

REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

"IT IS NECESSARY FOR THE USER TO REFER TO THE INSTRUCTION MANUAL"
“ES NECESARIO QUE EL USUARIO SE REFIERA AL MANUAL DE INSTRUCCIONES.”
"REFERREZ-VOUS AU MANUAL D'UTILISATION"
"UNBEDINGT IN DER BEDIENUNGSANLEITUNG NACHSCHLAGEN"

EXPLANATION OF GRAPHICAL SYMBOLS:
EXPLICACION DE SIMBOLOS GRAFICOS:

"DANGEROUS VOLTAGE"
“VOLTAJE PELIGROSO”
"DANGER HAUTE TENSION"
"GEFAHLICHE SPANNUNG"

=

=

PRECAUCION

RIESGO DE CORRIENTAZO

NO ABRA

PRECAUCION PARA DISMINUOIR EL RIESGO DE CORRIENTAZO

NO ABRA LA CUBIERTA

NO HAY PIEZAS ADENTRO QUE EL USARIO PUEDO REPARAR

DEJE TODO MANTENIMIENTO A LOS TECHNICOS CALIFICADOS

ATTENTION

RISQUE D'ELECTROCUTION

NE PAS OUVRIR

ATTENTION: POUR REDUIRE D'ELECTROCUTION NE PAS

ENLEVER LE COUVERCLE. AUCUNE PIECE INTERNE N'EST REPRABLE

PAR L'UTILISATEUR. POUR TOUTE REPARATION, S'ADRESSER A UN

TECHNICIEN QUALIFIE.

VORSICHT

ELEKTRISCHE SCHLAGGEFAHR

NICHT OFFENEN

VORSICHT: ZUR MINIMIERUNG ELEKTRISCHER SCHLAGGEFAHR NICHT

DEN DECKEL ABENHMEN. INTERNE TEILE KONNEN NICHT VOM

BENUTZER GEWARTET WERDEN. DIE WARTUNG IS QUALIFIZIERTEM

WARTUNGSPERSONAL ZU UBERLASSEN.

ESTE APARATO HA SIDO DISENADO Y CON­STRUIDO PARAPROVEER ANOS DE OPERACION
SEGURA Y CONFIABLE. PARA PROLONGAR LA
VIDA DE ESTA UNIDAD E IMPEDIR DANOS ACCI­DENTALES POR FAVOR SIGA ESTAS INSTRUC­CIONES PREVENTIVAS:

PRECAUCION: PARA DISMINUIR EL RIESGO DE

DESCARGAS ELÉLECTRICAS: (1) NO ABRA LA
CUBIERTA, (2) NO ES RECOMENDABLE
REMOVER O DESACTIVAR LA PATA DEL POLO A
TIERRA DEL CABLE DE CORRIENTE, CONECTE
CORRECTAMENTE A UNA TOMA DE CORRIENTE
A TIERRA.

ADVERTENCIA: PARA EVITAR DESCARGAS
ELECTRICAS O PELIGRO DE INCENDIO, NO DEJE
ESTE APARATO EXPUESTO A LA LLUVIA O
HUMEDAD.

PRECAUCION: NO HAY PIEZAS ADENTRO QUE
ELUSUARIO PUEDE REP ARAR. DEJE T ODO MAN­TENIMIENTO A LOS TÉCNICOS CALIFICADOS.

PRECAUCION: NUESTROS AMPLIFICADORES
PUEDEN PRODUCIR NIVELES DE PRESION DE
SONIDO ALTO. EXPOSICION CONTINUADA A LOS
NIVELES DE PRESION DE SONIDO ALTO PUEDE
CAUSA DANO PERMANENTE A SU OIDO. ES
ACONSEJADO QUE USE PRECAUCION AL
USUARIO Y ES RECOMENDADO PROTECCION
PARA LOS OIDOS SI LA UNIDAD ES OPERADA A
VOLUMEN ALTO.

THE CHART BELOW SHOWS THE U.S. GOVERNMENT’S OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION (OSHA) REGULATIONS WHICH WERE IN EFFECT ATTHE TIME OF THIS PUB­LICATION FOR PERMISSIBLE NOISE EXPOSURE, PER 29CFR1910.95, TABLE G-16:

ACCORDING TO OSHA, ANYEXPOSURE IN EXCESS TO THESE AMOUNTS LISTED ABOVE COULD RESULT IN SOME HEARING LOSS.

SOUND LEVEL DBA, DURATION PER DAY SOUND LEVEL DBA, DURATION PER DAY SOUND LEVEL DBA, DURATION PER DAY

SLOW RESPONSE IN HOURS SLOW RESPONSE IN HOURS SLOW RESPONSE IN HOURS

90 8 97 3 105 1
92 6 100 2 110 1/2
95 4 102 1 - 1 1/2 115 1/4 or less

Congratulations!

You are now the proud owner of one of the most versatile keyboard amplifiers available, the Crate KX-220
Four Channel Stereo Keyboard Amplifier. This incredible unit features Crate’s legendary performance and high
quality construction in a rugged and easy to operate package.

Your KX-220 is proudly made in America, using only the best components. Extensive testing and Crate’s
Five-Year Warranty assure you that your new amplifier is the absolute best it can be. In order to get the most
out of it, we strongly urge you to read this manual before using the amplifier.

And thank you

for choosing

Table of Contents:

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

The Top Panel . . . . . . . . . . . . . . . . . . . . . . . . .4

The Back Panel . . . . . . . . . . . . . . . . . . . . . . . .5

Sample Hookup Diagram . . . . . . . . . . . . . . . . .6

System Block Diagram . . . . . . . . . . . . . . . . . . .7

Technical Specifications . . . . . . . . . . .back cover

KX-220 Stereo Keyboard Amplifier

3

KX-220 Stereo Keyboard Amplifier

Features:

Below are some of the outstanding features which set the KX-220 in a class by itself. Additional information on

these features can be found throughout the remainder of this manual.

•Complete stereo circuitry all the way to the internal power amplifier

•Four separate input channels, each with its own level, pan and
reverb/effect send controls

•Three stereo line level channels, each with 1/4” left and right/mono
input jacks

•One “dual mono” channel, with a 1/4” instrument and an XLR
microphone input jack, plus a two band EQ

•Line out select switches (channels 3 and 4) – keeps those channels
out of the external mix if desired

•Eight band stereo graphic EQ for total tone control

•Master level, effects return, reverb return, and line out level controls

•Internal spring reverb

•Stereo effects loop for external effects

•Stereo line out jacks for connecting to a mixing board, recording
unit, or PA system

•Stereo preamp out jacks for connecting to additional amplifiers

•Power amp in jack (use two KX-220’s for total stereo performance)

• Built in power amp limiter for clean sound at full output

• Rugged construction and easily accessed controls

• Removable casters for greater mobility

• Crate’s exclusive Five Year Warranty (where applicable)