Crate Amplifiers BT220H Musical Instrument Amplifier User Manual
Contents
1. BI220H BASS AMPLIFIER oad i Lae fa g i i CRATE lt lt 4 lt lt 9 USER S GUIDE B 220 Bass Amplifier Table Of Contents MOCO ay ds ft aces Geshe a eat es nck 3 ENG ate ech 4 Le Rea FaN hiers ganre deed Os 5 Some Suggested Settings 6 System Block Diagram 7 Technical Specifications back cover 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 MOIS TURE SHOCK DO NOT REMOVE COVE R SERVICEABLE PARTS INSIDE REFER SERVICING QUALIFIED SERVICE PERSONNEL PRECAUCION RIESGO DE CORRIE2. cr ATE 7 220 Bass Amplifier CLEAN MASTER HIMID HIGH OCTAVE MASTER The Rear Panel 20 AC LINE CORD not shown The grounded power cord should only be plugged into a grounded power outlet 94 that meets all applicable electrical codes and is compatible with the volt 22 PREAMP POWER AMP age power and frequency require OUT IN ments stated on the rear panel Do not BALANCED mae OUT attempt to defeat the safety ground connection EFFECTS LOOP 21 PREAMP OUT Use this jack to Pa send a line level signal to an external 23 amplifier mixing board recording con GND sole or external effects device VOLUME 22 POWER IN Use this jack to connect a line level signal from an exter EXTERNAL SPEAKERS nal preamp or external effects device into the power amp The internal pre amp is deactivated when this jack is 0 used 40 MINIMUM LOAD 23 EFFECTS LOOP SEND Use this FOOTSWITC jack to connect an external signal processor to the amplifier by means of a 5 96 27 28 29 30 shielded signal cable Connect the other end of this cable to the input jack of the external processor 24 EFFECTS LOOP RETURN Use this jack to connect an external signal processor to the amplifier by means of a shield ed signal cable Connect the other end of this cable to the output jack of the ext
3. 15B Supplementary information provided by SLM Electronics R amp D Engineering 1901 Congressional Drive St Louis MO 63146 USA Tel 314 569 0141 Fax 314 569 0175 220 Bass Amplifier The Front Panel 220 PISTORTION ATTE GAIN SHAPE LEVEL BC D EF 4 CLEAN EL DISTORTION 1 2 3 4 5 6 7 8 9 1 ELECTRONIC TUNER This active electronic tuner is on whenever the amplifier is turned on allowing you constant real time tuning The tuner is fully chromatic use the flat and sharp indicators until the LED between them illuminates indi cating proper tuning 2 INPUT Use this 1 4 jack to connect your bass to the amplifier by means of a shielded instrument cable 3 15dB 0dB Use this switch to match the output signal level of your instrument to the amplifier If your instrument has stan dard pickups setting the switch to the 09 position switch in the out position should yield the best results If your bass has active electronics or high output pickups set the switch to the 15dB position switch depressed 4 MUTE This switch when depressed interrupts the signal prior to the power amplifier allowing you to tune your instru ment in silence 5 GAIN Use this control to adjust the amount of distortion for the Distortion channel As you rotate the control clockwise the amount of distortion increases NOTE The BT220H employs an internal noise gat
4. 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 EXPLANATION OF GRAPHICAL SYMBOLS EXPLICACION DE SIMBOLOS GRAFICOS EXPLICATION DES SYMBOLES GRAPHIQUES A DANGEROUS VOLTAGE VOLTAJE PELIGROSO DANGER HAUTE TENSION A WARNING REDUCE THE RISK OF ELECTRIC SHOCK OR FIRE DO NOT EXPOSE THIS UNIT OR MOISTURE E e 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 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 220 Bass Amplifier Congratulations You now the proud owner of the Crate BT220H Bass Amplifier The BT220H 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 creat
5. 0 FERGUSON ST LOUIS MO 63133 47 462 01 111703
6. CTAVE MASTER GO lt MASTER OCTAVE MASTER LL A LL A LL O As Needed System Block Diagram 7220H Bass Amplifier OCTAVE LEVEL FOOT SWITCHING SWITCH CIRCUITR BUFFER neur gt a CHANNEL LOW HIGH SWITCH DISTORTION SHARE LEVEL GAIN EFFECTS LOOP SEND RETURN N INPUT BALANCED PRE LINE OUT BALANCED POST LINE OUT VOLUME SPEAKER POWER AMP EXTERNAL POWER SPEAKER AMP IN ATTENUATOR PREAMP p HEAD OUT PHONES 7220H Bass Amplifier BT220H Technical Specifications Output Power Rating 220W RMS 2 THD 4Q 120 VAC Gain Distortion Channel 106dB Clean Channel 614 CD Inputs 36dB Tone Range Low 20dB 50Hz Lo Mid 24dB 150Hz Hi Mid 1848 1kHz High 34dB 10kHz Signal to Noise Ratio 65dB below full power tones flat gain and level 10 Input Impedance 220k ohms Maximum Input Signal Level Accepted 15 volts peak to peak Balanced Line Out Jack 2 volts peak to peak full rated power w 600 ohm load Inout Power Requirements 120 VAC 60Hz 250VA 100 115VAC 50 60Hz 250VA 230VAC 50 60Hz 250VA Size 8 1 2 x 24 1 2 W x 13 3 4 Weight 38 lbs Specifications subject to change without notice www crateamps com 2003 ST LOUIS MUSIC 140
7. NTAZO NO ABRA PRECAUCION PARA REDUCIR EL aN DE INCENDIOS DESCARGAS ELECTRICAS NO PERMITA QUE ESTE APARATO QUEDE EXPUESTO A LA LLUVIA O LA HUMEDAD PARA DISHINUOIR EL DE CORRIENTAZO NO ABRA LA CUBIERTA NO HAY PIEZAS ADENTRO QUE EL USARIO PUEDO REPARAR DEJE TODO MANTENIMIENTO A LOS TECHNICOS CALIFICADOS RISQUE D ELECTROCUTION NE PAS OUVRIR ATTENTION PROTEGEZ CET APPAREIL DE LA PLUIE ET DE L HUMIDITE AFIN D EVITER TOUT RISQUE D INCENDIE OU D ELECTROCUTION 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 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
8. PE LEVEL A V DISTORTION mm Funk DISTORTION GAIN SHAPE LEVEL A V n DISTORTION ma CLEAN Solo Fuzz DISTORTION GAIN SHAPE LEVEL A Vn DISTORTION CLEAN Super Fat Fuzz DISTORTION GAIN SHAPE LEVEL A V oh 0 GSO DISTORTION m CLEAN EL Starting Settings x lt lt iy 15 LOW LOW 1 EEGS lt LOW LOW LOW LOW T 220H Bass Amplifier CLEAN LO MID HIMID HIGH CLEAN HIMID HIGH IER CLEAN LO MID HIMID HIGH LL LL LL CLEAN HIMID HIGH CLEAN LO MID HIMID HIGH CLEAN HIMID HIGH 7 06 x lt is MASTER OCTAVE MASTER LL LL LL LL OOOO PO 66 D hl hol hol a 9 MASTER OCTAVE MASTER MASTER OCTAVE MASTER Os NO MASTER OCTAVE MASTER LL 1 G6 lt lt ih 2 x MASTER O
9. e on the Distortion channel to keep residual noise to a minimum The Clean channel s Level control 9 must be turned up above 0 in order for the noise gate to trigger properly The Gain con trol 5 and input signal level also affect the noise gate 6 SHAPE Use this control to adjust the tone of the Distortion channel from studio V shaped tone to a more more present sound 7 LEVEL Use this control to adjust the output level of the Distortion channel 8 CHANNEL SWITCH Use this switch to select either channel With the switch in the out position the Clean channel is selected When the switch is depressed the Distortion channel is selected The adjacent LED illuminates when the Distortion channel is selected NOTE When using the footswitch 27 when this switch is depressed the footswitch switch es between the Distortion channel and the Clean channel when this button is in the out position the Clean channel is always active and the footswitch turns the Distortion channel on and off allowing you a blend of both channels 9 LEVEL Use this control to adjust the output level of the Clean channel and as part of the Octave level control see 14 10 LOW Use this control to adjust the low frequency output of the Clean channel 11 LOW MID Use this control to adjust the lower midrange frequency output of the Clean channel 12 HIGH MID Use this control to adjust the upper midrange frequency output of the Clea
10. ernal processor 25 EXTERNAL SPEAKERS Use these parallel 1 4 jacks to connect the amplifier to your speaker cabinet s The mini mum acceptable impedance for your speaker cabinet s is four ohms 26 BALANCED LINE OUT Use this XLR jack to send a balanced line level signal to an external power amplifier mixing board or recording console 27 FOOTSWITCH Connect a two button footswitch such as the Crate CFS 2 here for remote control of the channel selection blend see 8 and octave on off When the Channel Switch 8 is depressed the footswitch switches between the Clean channel and the Distortion channel when the switch is in the out position the Clean channel is always active and the footswitch turns the Distortion channel on and off allowing you a blend of both channels 28 GROUND LIFT This switch when depressed lifts the ground connection at the Balanced Line Out jack 26 This may help reduce hum in the Balanced Line Out signal if necessary 29 PRE POST Use this switch to determine whether the Balanced Line Out signal is Post EQ switch depressed or Pre EQ switch in the out position 30 VOLUME Use this control to adjust the signal level at the Balanced Line Out jack 26 DISTORTION GAIN SHAPE LEVEL LEVEL DISTORTION m CLEAN Jazz DISTORTION GAIN SHAPE LEVEL Cm DISTORTION LEVEL DISTORTION GAIN SHA
11. es a second signal that is one octave lower than the original signal An active electronic tuner conveniently located on the front panel allows you to get in tune and stay in tune on the fly The Mute switch allows you to tune in silence without changing the channel Level controls A built in Limiter Keeps your sound clean even at full output power levels and front panel jacks are provided for connecting a CD player and a pair of head phones thereby optimizing your practice time Like all Crate products your 220 1 designed by musicians and built using only the best components Extensive testing at the hands and ears of skilled technicians and musi cians 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 infor mation in this manual before you begin playing And thank you for choosing Crate Declaration Of Conformity 30 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 55103 EN55013 EN61000 and or FCC 47CFR
12. n channel 13 HIGH Use this control to adjust the high frequency output of the Clean channel 14 OCTAVE The BT220H features internal circuitry which creates a second signal which is one octave lower than the input signal Use this control in conjunction with the Clean channel s Level control 9 to adjust the level of the octave signal 15 MASTER Use this control to adjust the overall output level of the amplifier 16 LIMIT LED This LED illuminates when the internal limiting circuit is active Occasional flashing during playing is normal lf the Limit LED remains illuminated reduce the output level of the amplifier until the LED flashes 17 CD INPUT Use these RCA jacks to connect the line level or headphones output of a CD player tape deck or rhythm machine to the amplifier The signal level from these jacks is adjusted by the Master control 15 If the signal from the source connected to these jacks is too strong use the output level control on the source to adjust the signal to obtain the proper level for a good mix 18 HEADPHONES Use this jack to listen to the amplifier through a pair of stereo headphones The external speakers are disconnected when the headphones jack is used To avoid possible damage to your hearing do not use headphones for extended periods of time at extremely loud listening levels 19 POWER Use this switch to turn the amplifier on and off The adjacent LED illuminates when the amplifier is turned on 4
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