Crate Amplifiers TXB50 User Manual
CONGRATULATIONS!
You are now the proud owner of the Crate TXB50 battery powered amplifier
with Digital Signal Processing. At last, you can take your music with you and
have great tone on the road. Not only is the TXB50 compact and portable, it also
features a four band rotary eq, a switchable contour control and the incredible
sound that has made Crate a household name among musicians. The high tech
polymer enclosure makes the amplifier lighter and even more portable!
Like all Crate products, your TXB50 is designed by musicians and built using
the finest components available. Each unit is rigorously tested by skilled
technicians and musicians to ensure that your amplifier is the best it can be!
In order to get the most out of your new amplifier, we strongly urge you to go
over the information contained in this manual before you begin playing.
Thanks for choosing
CRATE.
CONTENTS:
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
About the Power Supply . . . . . . . . . . . . . . .4,5
The Front Panel . . . . . . . . . . . . . . . . . . . . . .6,7
The Rear Panel . . . . . . . . . . . . . . . . . . . . . . .8
About the Insert Jack . . . . . . . . . . . . . . . . . . .8
Suggested Setups . . . . . . . . . . . . . . . . . . .9,10
System Block Diagram . . . . . . . . . . . . . . . . . .11
Technical Specifications . . . . . . . . .back cover
IMPORTANT SAFETY INSTRUCTIONS
• READ, FOLLOW, HEED, AND KEEPALL 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 APOLARIZED, 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 OPERA-
TION AND TO AVOID INJURY.
• THIS APPARATUS DOES NOT OPERATE NORMALLYAND REQUIRES SERVICE WITH ANY PHYSICAL DAMAGE FROM IMPACT OR
ANY EXPOSURE TO 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 SYMBÔLES GRAPHIQUES:
"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.
FEATURES:
• Four band rotary equalizer
• Switchable Contour control
• Crate’s Digital Signal Processing (DSP)
• Insert jack for connecting external effects
• CD Inputs for connecting background music
• Headphones jack for silent operation
• Internal rechargeable power supply for at least 8 hours of normal
playing time, 2 hours at full output – fully recharges within 6 hours
(when battery is fully discharged; shorter if partially charged)
• Two-color battery status LED – red indicates low battery, yellow indicates battery okay
• Can also be powered by an AC wall adapter or by a 12 volt automotive
adapter (see page 5)
• Tuned port cabinet for extended bass response
• Durable black molded polymer enclosure
• Rubber feet on three sides – for positioning as a low angle monitor, a
high angle monitor or as an upright speaker (see below)
• Provisions for 1-1/2” diameter stand mounting (installation kit not
included)
LOW ANGLE MONITOR HIGH ANGLE MONITOR
UPRIGHT SPEAKER STAND MOUNTED SPEAKER
3
4
ABOUT
THE POWER SUPPLY:
The TXB50 uses a sealed lead-acid 12-volt battery as its internal power
source. Unlike ni-cad batteries, this battery has no “memory” – it can
be fully recharged at any time, without damage to the battery.
When fully charged, the LED next to the power switch will illuminate
yellow with the switch at the on position. The LED will change to red
when the battery is low and needs recharging. When this happens, turn
the amp off, connect the 15-volt charger to the charger jack and plug it
in to an AC outlet. The LED near the charger jack will illuminate red
while the amp is charging and goes out when the amp is fully charged.
The battery fully recharges within 6 hours, providing up to 8 hours of
use at low levels, about 4 hours of use at moderate levels, and about 2
hours of use at continuous full power (sine wave). The battery is rated
for up to 1000 charging cycles. (The charger can also function as an AC
power supply.)
The battery inside the TXB50 must be fully charged before operating
the amplifier for the first time. The amplifier leaves our factory with a
fully charged battery. However, the battery may lose some of its charge
in transit.
NOTE: If the battery is drained too low, the Power LED will go out. This
indicates an exhausted battery – one which may not take a charge. If
this happens, turn the amp off, connect the 15-volt charger to the
charger jack and plug it in. If the Charger LED (see #17, page 8) doesn’t
illuminate, the battery might be beyond recharging. (The TXB50 uses a
“smart” charging circuit and will not allow you to charge a defective
battery.) If the battery is serviceable, the LED will illuminate once the
battery reaches 10 volts – leave the charger plugged in and let the battery fully recharge. If the LED never illuminates, the battery may need
replacing. Contact Crate’s service department:
SLM Electronics
1901 Congressional Drive
St. Louis, MO 63146
1-800-738-PARTS (7563)
To avoid damaging the amplifier, do not connect the 15VAC charger to
the amplifier’s 12VDC Cigarette Lighter Adapter jack.
CAUTION! The TXB50 contains a sealed, rechargeable,
lead-acid battery. Dispose of battery properly. Improper
disposal of the battery or replacement with any other
type may cause leakage, explosion, and/or injury. Refer
also to the warranty card.
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