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 ONLY TO 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 REC-
OMMENDED IF UNIT IS OPERATED AT HIGH VOLUME.THE CHART BELOW SHOWS THE U.S. GOVERNMENT OCCUPATIONAL SAFETY AND
HEALTH ADMINISTRATION (OSHA) REGULATIONS WHICH WERE IN EFFECT AT THE TIME OF THIS PUBLICATION FOR PERMISSIBLE NOISE
EXPOSURE, PER 29CRF1910, TABLE G-16.
ACCORDING TO OSHA, ANY EXPOSURE IN EXCESS OF THOSE LISTED ABOVE COULD RESULT IN SOME HEARING LOSS.
Congratulations!
You are now the proud owner of one of the most advanced bass guitar amplifiers available, the Crate BT-350
ThunderBass amp. This flexible and compact unit combines a tube preamp, 7-band graphic equalizer, chorus, bi-
amp capabilities and 350 watts of power in a rugged and attractive package that can be rack-mounted in only three
spaces. A wide array of front-panel controls along with footswitch options allow you to “tailor” the sound to best
suit your personal needs.
Like all Crate products, your BT-350 ThunderBass amp is Musician Made in the U.S.A., using only the best
components. Extensive testing at many stages in its production, including a final “audition” by a skilled musician,
insures you that your BT-350 ThunderBass amp is the best it can be.
In order to get the best possible performance, please read this manual before you use the amplifier.
And
thank you
for choosing
.
2
2
BT-350
BT-350
ThunderBass Amplifier
SOUND LEVEL dBA
DURATION PER DAY
SLOW RESPONSE
IN HOURS
90
8
92
6
95
4
97
3
100
2
SOUND LEVEL dBA
DURATION PER DAY
SLOW RESPONSE
IN HOURS
102
1-1/2
105
1
110
1/2
115
1/4 or less
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.
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.
"IT IS NECESSARY FOR THE USER TO REFER TO THE INSTRUCTION MANUAL"
"REFERREZ-VOUS AU MANUAL D'UTILISATION"
"UNBEDINGT IN DER BEDIENUNGSANLEITUNG NACHSCHLAGEN"
EXPLANATION OF
GRAPHICAL SYMBOLS:
"DANGEROUS VOLTAGE"
"DANGER HAUTE TENSION"
"GEFAHLICHE SPANNUNG"
=
=
Contents:
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
The Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4, 5
The Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
System Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Using the Biamp Capabilities . . . . . . . . . . . . . . . . . . . . . .8, 9
Some Suggested Settings . . . . . . . . . . . . . . . . . . . . . .10, 11
Technical Specifications . . . . . . . . . . . . . . . . . . . .back cover
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