Crate Amplifiers CA60 User's Manual
Contents
1. 20 Low This serves as the vocal aux channel s primary bass control Adjust this control to get the best sounding bass response for this channel Excessive boost of the low control can cause an unnatural howling and should be avoided 21 High This serves as the vocal aux channel s primary treble control Adjust this control so the high notes and harmonic overtones are live ly but not overpowering 22 Rev eff send Use this control to adjust the amount of internal reverb and or external effect if used for the vocal aux channel The Master Section 23 Rev Return Use this control to adjust the amount of internal reverb rotate the control clockwise to increase the effect counter clockwise to decrease it 24 Level Use this control to set the overall output level of the amplifier 25 Power Switch Use this switch to apply power to the amplifier the amp is on when the top of the switch is depressed off when the bot tom of the switch is depressed This switch will illuminate when the amplifier is on On the Rear Panel 0 10 Return Send Level 0 10 Low Z Bal High Z Bal Reverb Chorus Line Outputs Tweeter Gnd Lift On Off Effects Loop Foot Switch 33 32 31 30 29 28 27 26 26 Tweeter On Off swtich This switch when depressed deactivates the CA60 s internal tweeter 27 Footswitch Connect the supplied two button footswitch here for remote on off control of the internal reverb and ch2. Off switch This switch when depressed applies the internal chorus effect to the instrument channel 13 Chorus Depth Use this control to adjust the magnitude of the chorus effect Rotating this control clockwise increases the intensity of the effect 14 Chorus Rate Use this control to adjust the rate of the chorus effect Rotating this control clockwise increases the rate at which the effect occurs The Vocal Aux channel 15 Low Z input The signal output from a low impedance microphone may be connected here by means of a shielded balanced microphone cable terminated with an XLR connector 16 Hi Z input The signal output from a high impedance microphone or a line level signal may be connected here by means of a shielded sig nal cable terminated with a 1 4 tip sleeve connector 17 Phantom Power switch This switch when depressed applies 15 volts phantom power to pins 2 and 3 of the Low Z input jack 15 for proper operation of microphones requiring phantom power Mics not needing phantom power will not be affected by this switch 18 Chorus On Off switch This switch when depressed applies the internal chorus effect to the vocal aux channel Chorus is only avail able for this channel when the instrument channel s chorus switch 12 is depressed 19 Gain This serves as the input level control for the vocal aux channel of the amplifier Adjust this control for the best mix with the signals from the instrument channel
3. channel low z input hi z input phantom power tones effects line out left right rev effect send low high tones gain effects return left master level 30w low right 30w low reverb return effects send spring reverb low z bal hi z bal level line out chorus on on chorus on high pass filter high tweeter on off To Eliminate Instrument Feedback One of the most common problems encountered when amplifying acoustic instruments especially in small environments is feedback Acoustic instruments typically have inherent qualities which cause res onant feedback at specific frequencies Instrument tone controls and sound board equalizers are helpful in getting rid of the problem but they typically operate around relatively wide frequency bands This almost always means the musician must sacrifice sound quality in his quest to do away with feedback But since Crate s feedback elimination circuit isolates only the offending frequency instrument feedback from the CA60 can be eliminated without affecting the overall sound Chances are you may not have a problem with feedback at all In that case set the CA60 s Freq and Cut controls fully counter clockwise However if you do encounter feedback while playing set the Cut control to 30dB fully clockwise and adjust the Freq control until the feedback is gone Reduce the Cut to the 12 o clock position and readjus
4. the best signal to noise ratio set this control so the Peak LED 5 flashes when playing your instrument fairly hard 5 Peak LED This LED flashes when the signal level into the preamp approaches clipping Adjust the Gain control 4 until a strong signal from your instrument causes this LED to flash 6 Low This serves as the instrument channel s primary bass control Adjust this control to get the best sounding bass response for your instrument Excessive boost of the low control can cause an unnatural howling and should be avoided 7 Mid This serves as the instrument channel s primary midrange con trol Adjust this control to get the best projection and midrange tones for your instrument 8 High This serves as the instrument channel s primary treble control Adjust this control so your high notes and harmonic overtones are lively but not overpowering 9 Freq Use this control along with the Cut control 10 to eliminate instrument feedback For information on the proper use of this con trol please read the section entitled To Eliminate Instrument Feedback 10 Cut Use this control along with the Freq control 9 to eliminate instrument feedback For information on the proper use of this con trol please read the section entitled To Eliminate Instrument Feedback 11 Rev Eff send Use this control to adjust the amount of internal reverb and or external effect if used for the instrument channel 12 Chorus On
5. D esigned for the performing artist Crate s CA60 Acoustic Amplifier gives you more of what you want More power More clarity More control And more freedom Imagine microphone quality sound without feedback And without being chained to a mic stand More power twin 30 watt RMS power amplifiers drive a pair of specially designed high fidelity 6 1 4 transducers for plenty of volume and low end punch More clarity a highly efficient Piezo tweet er provides clean crisp highs and a natural midrange blend A tweeter on off switch on the rear panel allows you to deactivate the high frequency driver if desired More control two independent channels each with its own gain and reverb effects controls The Instrument channel features an Active Piezo switch to properly match the pickups of your instrument a Shape switch for a richer sound and a three band rotary EQ An easy to use feedback elimination cir cuit with frequency select and cut controls lets you kill feedback without sacrificing sound quality Plus a footswitchable chorus with depth and rate controls The Vocal Aux channel offers both low and high impedance inputs and allows the use of a rhythm machine background tape or another mic or instrument Still more The master section features a reverb return control and the master level control A footswitch jack on the rear panel provides control for reverb and chorus Level controllable XLR a
6. IRE 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 ZUR MINIMIERUNG ELEKTRISCHER SCHLAGGEFAHR NICHT DEN DECKEL ABENHMEN INTERNE TEILE KONNEN NICHT VOM BENUTZER GEWARTET WERDEN DIE WARTUNG IS QUALIFIZIERTEM WARTUNGSPERSONAL ZU UBERLASSEN Output Power Rating 60 watts RMS total system power Internal Amp 2 x 30 watts RMS 1 THD Inst Channel Low 15dB 80Hz Mid 15dB 650Hz High 15dB 10kHz Shape 25dB 600Hz Input Impedance 25k ohm Active 2 2M ohm Piezo Input Sensitivity 22mV RMS Active 9mV RMS Piezo Sens to Eff Send Line out 70mV Max Input Signal 6v RMS 17v peak to peak Feedback Elimination Freq variable from 80Hz to 4kHz Cut variable from 0 to 30dB Voc Aux Channel Low 15dB 80Hz High 15dB 10kHz Input Impedance 3k ohm Lo Z 20k ohm Hi Z Input Sensitivity 3mV RMS Lo Z 15mV RMS Hi Z Sens to Eff Send Line out 9mV Lo Z 50mV Hi Z Max Input Signal 10v RMS 28v peak to peak Effects Loop Line Out 1v RMS Line In 1v RMS Eff Return to Line Out Sens 50mV Eff Return In Impedance 11k ohm Eff Send Out Impedance 2 2k ohm Line Out Out Impedance 220 ohm Lo Z 2 2k ohm Hi Z Internal Woofers 2 x 6 1 4 w polypropylene cones rubber surrounds 17 7oz magnet 1 voice coil 4 ohms 50w RMS 95dB 1w 1m
7. Internal Tweeter High efficiency Piezo 110dB 1w 1m Internal Crossover Passive type Power Requirements 120VAC 60Hz 60VA 100 115VAC 50 60Hz 60VA 230VAC 50 60Hz 60VA Size and Weight 13 1 2 H x 21 3 16 W x 10 1 4 D 42 lbs Technical Specifications On the Front Panel Input Mid Gain 0 10 High Low 0 15 15 Rev Eff Send 0 10 Depth 0 10 Rate 0 10 Gain 0 10 Low 0 15 15 High 0 15 15 Rev Eff Send 0 10 Level 0 10 Rev Return 0 10 Chorus Phantom Low Z Hi Z Power Freq Cut 15dB Piezo Active Shape Instrument Chorus Vocal Aux Master Peak Chorus 0 15 15 500Hz Crate Acoustic CA60 80Hz 4kHz 0 15 15 0 30dB 1 3 12 4 5 2 6 7 8 9 10 11 13 14 15 16 18 19 17 20 21 22 23 24 25 The Instrument channel 1 Input The signal output from your acoustic instrument may be con nected here by means of a shielded instrument cable 2 Active Piezo switch Use this switch to select the type of pickup on your instrument For active electronic pickups set the switch to active switch out For passive magnetic pickups set it to piezo switch depressed 3 Shape This switch when depressed serves as a mid cut control adding fullness to the sound of your instrument 4 Gain This serves as the input level control for the instrument channel of the amplifier For
8. R 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 RECOMMENDED IF UNIT IS OPERATED AT HIGH VOLUME 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 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 UNBEDINGT IN DER BEDIENUNGSANLEITUNG NACHSCHLAGEN EXPLANATION OF GRAPHICAL SYMBOLS DANGEROUS VOLTAGE VOLTAJE PELIGROSO DANGER HAUTE TENSION GEFAHLICHE SPANNUNG ATTENTION RISQUE D ELECTROCUTION NE PAS OUVRIR VORSICHT ELEKTRISCHE SCHLAGGEFAHR NICHT OFFENEN ATTENTION POUR REDU
9. nd 1 4 balanced line outs allow you to patch into house sound boards or recording consoles plus an effects loop line in line out setup allows connection of external effects The CA60 was designed evaluated tweaked and redesigned by musicians and music loving engineers Highly sophisticated computer driven assembly machines and highly skilled assemblers use only the finest components to produce each amp Every cabi net is hand built and hand covered by trained craftsmen The final assembled product is tested and played by skilled musician technicians It is only after the amplifier has passed this barrage of picky people that it gets packed up and shipped out The CA60 Acoustic Amplifier Designed to be its best so you can sound your best About the Crate Acoustic CA60 NES Crate Acoustic amplifiers are Made With Pride in the U S A To get this amplifier to sound its best read this owner s guide prior to its use To keep this amplifier looking its best avoid abrasive cleansers Wipe the cab inet clean using a slightly dampened cloth Never use brass cleaners on the hardware since they could damage their protective coatings Crate continually develops new products as well as improves existing ones For this reason the specifications and information in this manual are subject to change without notice THIS EQUIPMENT HAS BEEN DESIGNED AND ENGINEERED TO PROVIDE SAFE AND RELIABLE OPERATION IN ORDE
10. orus When connect ed the footswitch overrides the front panel chorus on off switch Note This is a STEREO jack tip controls the chorus ring controls the reverb sleeve is ground Use only a footswitch equipped with a stereo 1 4 plug 28 Effects Loop Send When using an external signal processor connect this jack to the input of the effect by means of a shielded signal cable 29 Effects Loop Return When using an external signal processor connect this jack to the output of the effect by means of a shielded signal cable 30 Ground Lift This switch when depressed electronically disconnects the low Z balanced output jack s chassis ground connection If you expe rience excessive noise when using the low Z balanced output jack depress this switch 31 High Z Bal Use this jack to connect a high impedance line level signal to a house sound board a recording console or an external power ampli fier by means of an 1 4 stereo plug terminated cable Ring is signal tip is signal and sleeve is ground 32 Low Z Bal Use this jack to connect a low impedance line level signal to a house sound board a recording console or an external power amplifi er by means of an XLR terminated cable Pin 1 is ground pin 2 is signal and pin 3 is signal CA60 Block Diagram instrument channel input active piezo freq cut filter gain low mid high peak shape depth rate chorus rev effect send vocal aux
11. t the Freq control as needed Continue reducing the Cut control and readjusting the Freq control until there is no more feedback with the Cut control as far counter clockwise as possible This approach effectively eliminates instrument feedback without sacrificing the quality of your sound 33 Line Out Level Use this control to adjust the output level of the line out signal This control works independently from the amplifier s master level control Not Shown Power cord Connect the end of this cord to a suitable source of line volt age Refer to the voltage information on the back of the amplifier for its voltage and current requirements Note This is a grounded plug To avoid the possibility of electric shock DO NOT defeat the ground connection in any way www crateamps com 1999 SLM Electronics A Division of St Louis Music Co 1400 Ferguson Avenue St Louis MO 63133 P N 47 941 01 09 99
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