BFX25
BFX50
BASS AMPLIFIER
WITH
DIGITAL SIGNAL
PROCESSING
BFX50
DSP
OWNER’S MANUAL
Congratulations!
You are now the proud owner of the compact but powerful Crate BFX25/50 Bass
Amplifier with Digital Signal Processing. This offers you a wide selection of digital
effects designed especially for the bass guitar, each of which are easily accessed
with a simple turn of a control knob. (No programmers degree required!) A four-band
rotary EQ combined with Crate’s variable Contour gives you complete control over a
wide variety of sounds. In addition, the front panel headphone and extension speak-
er jacks make this amplifier equally suited for private practicing as well as perform-
ing in intimate surroundings.
Like all Crate products, your BFX25/50 is designed by musicians and built using
only the best components. Extensive testing at the hands (and ears) of skilled tech-
nicians 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 recommend that you read
this manual before you begin playing.
And thank you for choosing
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BFX25/50 Bass Amplifier
Suggested Starting Tone Settings:
ROCK:
CONTOUR
CONTOUR
CONTOUR
CONTOUR
EQUALIZATION
EQUALIZATION
EQUALIZATION
EQUALIZATION
MASTER
MASTER
MASTER
MASTER
OUT
ACTIVE
JAZZ:
IN
ACTIVE
COUNTRY:
FUNK:
IN
ACTIVE
IN
ACTIVE
System Block Diagram:
CONTOUR
INPUT
EQ
LIMITER
EXT.
SPEAKER
POWER
AMP
GAIN
MASTER
VOLUME
DSP
ON/
OFF
SHAPE
LO LO HI HI
MID MID
HEAD
PHONES
LEVEL
MODE
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BFX25/50 Bass Amplifier
BFX25/50 TECHNICAL SPECIFICATIONS:
BFX25
BFX50
Output Power Rating
Gain
Tone Range
25W RMS 1%THD, 4Ω, 20Vrms
42dB, tones at “5” @ 1kHz
19dB range @ 60Hz
25dB range @ 200Hz
19dB range @ 1kHz
38dB range @ 10kHz
75dB
50W RMS 1%THD, 8Ω 20Vrms
48dB, tones at “5” @ 1kHz
19dB range @ 60Hz
25dB range @ 200Hz
19dB range @ 1kHz
38dB range @ 10kHz
75dB
Low
Low Mid
High Mid
High
Signal to Noise Ratio
Input Impedance
220k ohms
220k ohm
Maximum Signal Accepted
Power Requirements
15 volts, peak-to-peak
110VAC, 60Hz, 45VA
100/110VAC, 50/60Hz, 45VA
230VAC, 50/60Hz, 45VA
10”
15 volts, peak-to-peak
110VAC, 60Hz, 85VA
100/110VAC, 50/60Hz, 85VA
230VAC, 50/60Hz, 85VA
12”
Internal Speaker
Size
Type
Crate Custom
Crate Custom
Magnet
Voice Coil
30 oz
1.0”
30 oz
1.5”
RMS Rating
Impedance
30 watts
4 ohms
50 watts
8 ohms
Size
Weight
17” H x 15.75” W x 12” D
39 lbs (17.7kg)
20.62” H x 17” W x 13.5” D
47 lbs (21.3kg)
Specifications subject to change without notice.
CAUTION
PRECAUCION
ATTENTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
RIESGO DE CORRIENTAZO
NO ABRA
RISQUE D'ELECTROCUTION
NE PAS OUVRIR
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC
SHOCK, DO NOT EXPOSE THIS APPARATUS TO RAIN OR MOIS-
TURE. TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT
REMOVE COVER. NO USER-SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
PRECAUCION: PARA REDUCIR EL RIESGO DE INCENDIOS
O
DESCARGAS
LA
LA HUMEDAD. PARA DISMINUOIR EL RIESGO DE CORRIENTAZO.
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.
ELECTRICAS, NO PERMITA QUE ESTE APARATO QUEDE EXPUESTO
A
LLUVIA
O
NO ABRA LA CUBIERTA. NO HAY PIEZAS ADENTRO QUE EL USARIO PUEDO
REPARAR DEJE TODO MANTENIMIENTO A LOS TECHNICOS CALIFICADOS.
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 UNIT REQUIRES 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 OPERA-
TION AND TO AVOID INJURY.
• THIS APPARATUS DOES NOT OPERATE NORMALLY AND 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 PRO-
TECTION IS RECOMMENDED IF UNIT IS OPERATED AT HIGH VOLUME.
EXPLANATION OF GRAPHICAL SYMBOLS:
EXPLICACION DE SIMBOLOS GRAFICOS:
EXPLICATION DES SYMBÔLES GRAPHIQUES:
"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"
"DANGEROUS VOLTAGE"
“VOLTAJE PELIGROSO”
"DANGER HAUTE TENSION"
=
=
The BFX25/50 is covered with a durable black Tolex material: wipe it clean with a lint-free cloth. Never spray
cleaning agents onto the cabinet. Avoid abrasive cleansers which would damage the finish.
©2001 SLM ELECTRONICS, A DIVISION OF ST. LOUIS MUSIC, 1400 FERGUSON, ST. LOUIS, MO. 63133
P/N 47-356-01 • 07/01
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