Crate Amplifiers bt25-bt50 User Manual

BT25/BT50

BASS AMPLIFIER

USER’S GUIDE

IMPORTANT SAFETY INSTRUCTIONS

• READ, FOLLOW, HEED, AND KEEP ALL INSTRUCTIONS AND WARNINGS.

• DO NOT OPERATE NEAR ANY HEAT SOURCE AND DO NOT BLOCK ANY VENTILATION OPENINGS ON THIS APPARATUS. FOR

PROPER OPERATION, THIS UNITREQUIRES 3” (75mm) OF WELL VENTILATED SPACE AROUND HEATSINKS AND OTHER AIR
FLOW PROVISIONS IN THE CABINET.

• DO NOT USE THIS APPARATUS NEAR SPLASHING, FALLING, SPRAYING, OR STANDING LIQUIDS.

• CLEAN ONLY WITH LINT-FREE DAMP CLOTH AND DO NOT USE CLEANING AGENTS.

• ONLY CONNECT POWER CORD TO A POLARIZED, SAFETY GROUNDED OUTLET WIRED TO CURRENT ELECTRICAL CODES AND

COMPATIBLE WITH VOLTAGE, POWER, AND FREQUENCY REQUIREMENTS STATED ON THE REAR PANEL OF THE APPARATUS.

• PROTECT THE POWER CORD FROM DAMAGE DUE TO BEING WALKED ON, PINCHED, OR STRAINED.

• UNPLUG THE APPARATUS DURING LIGHTNING STORMS OR WHEN UNUSED FOR LONG PERIODS OF TIME.

• ONLY USE ATTACHMENTS, ACCESSORIES, STANDS, OR BRACKETS SPECIFIED BY THE MANUFACTURER FOR

SAFE OPERATION AND TO AVOID INJURY.

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

• SERVICE MUST BE PERFORMED BY QUALIFIED PERSONNEL.

• 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

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

EXPLANATION OF GRAPHICAL SYMBOLS:
EXPLICACION DE SIMBOLOS GRAFICOS:
EXPLICATION DES SYMBÔLESGRAPHIQUES:

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

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PRECAUCION

RIESGO DE CORRIENTAZO

NO ABRA

PRECAUCION: PARA REDUCIR EL RIESGO DE INCENDIOS O DESCARGAS
ELECTRICAS, NO PERMITA QUE ESTE APARATO QUEDE EXPUESTO A LA
LLUVIA O LA HUMEDAD. 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: PROTÉGEZ CET APPAREIL DE LA PLUIE ET DE L'HUMIDITÉ
AFIN D'ÉVITER TOUT RISQUE D'INCENDIE OU D'ÉLECTROCUTION. 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.

BT25/BT50

Bass Amplifier

Table Of Contents:

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

The Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . .4,5

Some Suggested Settings . . . . . . . . . . . . . . . . . . . . . .6

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

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

2

3

Congratulations!

You are now the proud owner of the compact but powerful Crate
BT25/BT50 Bass Amplifier. The BT25/BT50 features two different chan­nels: a distortion channel, featuring Crate’s exclusive Shape control for
quick and easy access to the tone you need, and a clean channel with
a four-band rotary EQ. Another unique and valuable feature of this
amplifier is the Octave control. This feature electronically creates a sec­ond signal that is one octave lower than the original signal. An active
electronic tuner, conveniently located on top of the amplifier, allows you
to get in tune and stay in tune “on the fly.” Front panel jacks are provid­ed for connecting a CD player and a pair of headphones, thereby opti­mizing your practice time.

Like all Crate products, your BT25/BT50 is designed by musicians
and built using only the best components. Extensive testing at the hands
(and ears) of skilled technicians and musicians insures you that this
amplifier is the absolute best it can be.

In order to get the most out of your new bass amp, we urge you to
check out the information in this manual before you begin playing.

And thank you

for choosing Crate.

Declaration Of Conformity

#28, Effective 01-01-2001

Manufacturer’s Name: SLM Electronics

Production Facility: 1901 Congressional Drive, St. Louis, MO 63146, USA
Production Facility: 700 Hwy 202 W, Yellville, AR 72687, USA
Shipping Facility: 1400 Ferguson Ave., St. Louis, MO 63133, USA
Office Facility: 1400 Ferguson Ave., St. Louis, MO 63133, USA

Product Type: Audio Amplifier
Complies with the following Standards:

Safety: EN60065, E60065, C22.2, UL6500 and/or UL813
EMC: Directive 89/336/EEC, EN55103, EN55013, EN61000,

and/or FCC 47CFR 15B clA

Supplementary information provided by:

SLM Electronics - R & D Engineering

1901 Congressional Drive, St Louis, MO 63146, USA

Tel.: [phone], Fax: [phone]

BT25/BT50

Bass Amplifier