Crate Amplifiers owner manual BT-350ThunderBass Amplifier Congratulations, Contents

BT-350ThunderBass Amplifier

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 .

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

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.

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.

SOUND LEVEL dBA	DURATION PER DAY	SOUND LEVEL dBA	DURATION PER DAY
SLOW RESPONSE	IN HOURS	SLOW RESPONSE	IN HOURS
90	8	102	1-1/2
92	6	105	1
95	4	110	1/2
97	3	115	1/4 or less
100	2

ACCORDING TO OSHA, ANY EXPOSURE IN EXCESS OF THOSE LISTED ABOVE COULD RESULT IN SOME HEARING LOSS.

EXPLANATION OF	"DANGEROUS VOLTAGE"
	= "DANGER HAUTE TENSION"
GRAPHICAL SYMBOLS:
	"GEFAHLICHE SPANNUNG"

"IT IS NECESSARY FOR THE USER TO REFER TO THE INSTRUCTION MANUAL"

="REFERREZ-VOUS AU MANUAL D'UTILISATION"

"UNBEDINGT IN DER BEDIENUNGSANLEITUNG NACHSCHLAGEN"

2