Crate Amplifiers VC-120H User's Manual
Contents
1. CRATE VC 120H Vintage Club Amplifier OWNER S MANUAL VC 120H Amplifier Congratulations You are now the proud owner of one of the newest and most versatile tube amplifiers available for the guitar The CRATE VC 120H offers flexibilty and portability with two sep arate channels for a uniquely rich palette of tonal variety and simplicity of control over your sound Your CRATE Vintage Club Series amplifier is musician made in the U S A using the finest components available Each unit is rigorously tested by skilled technicians and musi cians to ensure that your amplifier is the best it can be In order to get the most out of your new amplifier we strongly urge you to go over the information contained in this manual before you begin playing And thank you for choosing C E ETE CAUTION ATTENTION VORSICHT DO NOT OPEN NE PAS OUVRIR NICHT OFFENEN CAUTION TO REDUCE THE RISK OF ELECTRIC SHOCK ATTENTION POUR REDUIRE D ELECTROCUTION NE PAS VORSICHT ZUR MINIMIERUNG ELEKTRISCHER SCHLAGGEFAHR NICHT DO NOT REMOVE COVER ENLEVER LE COUVERCLE AUCUNE PIECE INTERNE N EST REPRABLE DEN DECKEL ABENHMEN INTERNE TEILE KONNEN NICHT VOM NO USER SERVICEABLE PARTS INSID PAR L UTILISATEUR POUR TOUTE REPARATION S ADRESSER A UN BENUTZER GEWARTET WERDEN DIE WARTUNG IS QUALIFIZIERTEM REFER SERVICING TO QUALIFIED SERVICE SE TECHNICIEN QUALIFIE WARTUNGSPERSONAL ZU UBERLASSEN THIS EQUIPMENT HAS BEEN DESIGNED AND ENGINEERED TO PR2. BOOST BOOST P p EFFECTS TRBL MID BASS EFEO TONE END ARR LOW GAIN PACA x 2 KE A gt A STAGE STAGE moe EFFECTS Aven MID BRIGHT BOOST b A R A ee J OUTPUT OUTPUT STAGE TRANSFORMER DRIVER a MAIN i SPEAKER p QU a gt Y EXTENSION me BEG y SPEAKER V V V V REVERB PRESENCE LEVELS VC 120H Amplifier TECHNICAL SPECIFICATIONS Output Power Rating Input Impedance Maximum Signal Accepted Gain Channel A Channel B Tone Control Range Channel A Channel B Both Channels Effects Send Tube Type Power Requirements Size and Weight 120W RMS 5 THD 16 ohm load 120 VAC 1 M ohm OdB 1 5V peak to peak 6dB 2 8V peak to peak 68dB 100dB Treble 16dB 5kHz Mid 8dB 700Hz Bass 10dB 50Hz Mid Boost 12dB 800Hz Low Boost 13dB 100Hz Treble 16dB 2 5kHz Mid 6dB 800Hz Bass 22dB 150Hz Bright 10dB 3kHz Mid Boost 8dB 800Hz Presence 4dB 10kHz 2 1V RMS full power output Preamp 1 12AU7 4 12AX7 Power Amp 4 6L6GC EL34 120VAC 60Hz 400VA 100 115VAC 50 60Hz 400VA 230VAC 50 60Hz 400VA 12 1 2 H x 27 W x 9 1 2 D 47 Ibs The VC 120H is covered with a durable black Tolex material To keep the cabinet in top condition wipe it clean with a damp lint free cloth to remove dirt and road film Never spray cleaning agents directly onto the cabinet and stay away from abrasive cleansers which could damage the finish Crat
3. Effects Level control 20 acts as an extra volume boost which can be activated by the footswitch For the best sig nal to noise ratio when NOT using the effects loop keep the Effects Level control 20 set to 0 EFFECTS LOOP RETURN JACK Connection from an external effects device is made via this jack Connect a shielded instrument patch cord from the output jack of the effect to the return jack The return jack also doubles as a power amp in jack to feed a line level signal directly into the internal power amp This is useful when slaving two amplifiers together When using in this mode slaving make sure the front panel Master volume controls are all the way down at 0 EFFECTS LEVEL CONTROL Use this knob to set the input level of the signal from the Effects Loop Return jack 19 The Effects Loop Send level is adjusted by the Master volume controls 6 SPEAKER JACKS Connect the amplifier to your soeaker cabinet s via these jacks using heavy duty speaker cables not instrument patch cords Use cabinets rated at 8 ohms or higher in combinations which never create a load lower than 8 ohms Make sure the Impedance switch 22 is properly set Always use the MAIN speaker jack first then connect to the EXTENSION jack if using more than one cabinet 22 23 24 25 23 24 25 IMPEDANCE SWITCH For the best performance and least strain on the amp you MUST match the amp s imped ance to that of your
4. speaker cabinet s Set the selector switch to the 8 or 16 ohm position depending on the total impedance of your cabinets The chart below can help you determine that impedance based on the following combi nations of speakers connected in parallel CAB IMP it OF CABS TOTAL IMP 16 ohms 2 8 ohms 32 ohms 2 16 ohms 32 ohms 4 8 ohms BIAS ADJUST BIAS TEST POINT For qualified Service Personnel only All others please just ignore these internal Bias adjustment potentiometers FUSE This fuse protects the amplifier against damages caused by overload conditions in the unit If the fuse blows replace it only with the same size and type as indicated on the rear panel If the fuse blows continually the line voltage may be incorrect or the amp may need servicing AC LINE IN Firmly plug the female end of the supplied power cord into this socket pushing it in until it is fully seat ed Plug the male end of the cord into a properly grounded AC outlet of the correct voltage DO NOT DEFEAT THE GROUND PIN OF THE AC PLUG Use only the supplied power cord If the amplifier is to be used outside of the United States see your authorized Crate dealer for infor mation about alternate line cords and power converters if needed Presence e 6 Gain 8 Boost Presence Reverb Master i Treble y 6 y 6 Off On VC 120H Amplifier System Block Diagram TRBL MID BASS GAIN Z AAA A HI MID LOW CH A MSTR CH AQ
5. OVIDE 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 THIS UNIT IS 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 RECOMMENDED IF UNIT IS OPERATED AT HIGH VOLUME THE CHART BELOW SHOWS THE U S GOVERNMENT S OCCUPATIONAL SAFETY AND HEALTH ADMINIS TRATION OSHA REGULATIONS WHICH WERE IN EFFECT AT THE TIME OF THIS PUBLICATION FOR PERMISSIBLE NOISE EXPOSURE PER 29CFR1910 95 TABLE G 16 SOUND LEVEL DBA DURATION PER DAY SOUND LEVEL DBA DURATION PER DAY SLOW RESPONSE IN HOURS SLOW RESPONSE IN HOURS 8 1 11 2 6 1 4 3 2 1 2 1 4 or less ACCORDING TO OSHA ANY EXPOSURE IN EXCESS TO THESE AMOUNTS LISTED ABOVE COULD RESULT IN SOME HEARING LOSS EXPLANATION OF DANGEROUS VOLTAGE IT IS NECESSARY FOR THE USER TO REFER TO THE INSTRUCTION MANUAL DANGER HAUTE TENSION REFERREZ VOUS AU MANUAL D UTILISATION GRAPHICAL
6. SYMBOLS GEFAHLICHE SPANNUNG UNBEDINGT IN DER BEDIENUNGSANLEITUNG NACHSCHLAGEN VC 120H Amplifier TABLE OF CONTENTS Features The Front Panel Controls and Their Use The Rear Panel Some Suggested Settings System Block Diagram Technical Specifications Features e All tube operation e Two completely independent channels with individual gain and tone controls e Channel switching from the front panel or footswitch supplied e Individual reverb return controls for each channel e Effects Loop for virtually noise free connection of your favorite effect s controllable by a footswitch supplied e Specially designed paper bobbin output transformer for a true vintage sound e Durable tolex covering and special cosmetic treatments for a unique stage appearance The Front Panel Controls and Their Use 1 POWER SWITCH Toggle this switch to the ON position to turn on the amplifier NOTE Always turn the power switch ON FIRST OFF LAST Use the Standby switch toggled to the Standby position when first turning the amp on as well as during breaks 2 STANDBY SWITCH Toggle this switch to the ON position to acti vate the amplifier once the power switch 1 has been on for at least 30 seconds This allows the tubes to come up to a safe operating temperature before use The amp should be set in the Standby mode switch down during extended breaks to help pro mote longer tube life 3 POWER LAMP
7. This dual color jewel lamp glows when the amp is turned on an amber color indicates Channel A a red color indi cates Channel B 4 PRESENCE CONTROLS These controls govern the upper high frequencies for each channel allowing an enhancement to the sound beyond the Treble and Mid controls 5 REVERB CONTROLS These controls govern the amount of reverb applied to each channel 6 MASTER CONTROLS These controls govern the output volume levels of each channel 7 BASS CONTROLS These controls adjust the low end levels for each channel 8 LOW BOOST SWITCH Toggle this switch to the ON position to boost the low end response of Channel A 10 11 12 13 14 15 16 7 89 10 11 121314 15 16 MID BOOST SWITCH Toggle this switch to the ON position to boost the midrange response of Channel B MID CONTROLS These controls adjust the midrange levels for each channel TREBLE CONTROLS These controls adjust the high frequency levels for each channel MID BOOST SWITCH Toggle this switch to the ON position to boost the midrange response of Channel A BRIGHT SWITCH Toggle this switch to the ON position to boost the upper register of Channel B GAIN CONTROLS These controls govern the amount of signal going to the output stage of the amplifier Channel A Gain offers a range of sounds from clean to a bluesy crunch Channel B from a slight crunch to full tilt screaming distortion CHANNEL SWITCH Toggle this swi
8. e 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 1998 SLM ELECTRONICS A division of St Louis Music 1400 Ferguson Avenue St Louis Mo 63133 P N 47 271 02 08 98
9. tch to the desired channel up for Channel A down for Channel B A footswitch also may be used to select channels in which case this switch is bypassed see 17 rear panel INPUT JACKS The High input is a direct connection for stan dard electric guitars The Low input is padded 6dB and is best Suited for guitars with hot pickups or on board active electronics Use a high quality shielded instrument cable VC 120H Amplifier EFFECTS LOOP SPEAKERS 120 WATTS RMS IMPEDANCE FOOTSWITCH SEND ELECTOR RETURN EFFECTS LEVEL O O a SIKOJE NS NY ae BA OG MLR ASD o 10 17 18 19 20 21 22 The Rear Panel 17 18 19 20 21 FOOTSWITCH JACK Connect the supplied two button footswitch for control of channel switching and the effects loop on off The tip of the jack is for channel switching the ring is for effects When a footswitch is connected here the front panel channel select switch is disabled EFFECTS LOOP SEND JACK Connection to an external effects device is made via this jack Connect a shielded instrument patch cord from the send jack to the input jack of the effect The send jack also doubles as a preamp out jack to feed a post eq signal to a mixing board recording console or external amplifier NOTE Effects loop operation is parallel with the signal path Mix controls on the effects should be set to 100 full wet If no effects are connected to the Effects Loop the
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