Crate Amplifiers GT-500H User's Manual
Contents
1. LEVEL The overall volume level of Channel B is controlled with this knob When set at 2 o clock the power amp begins to be overdriven for true power amp distortion CHANNEL A REVERB LEVEL This control adjusts the amount of reverb on Channel A CHANNEL B REVERB LEVEL This control adjusts the amount of reverb on Channel B FOOTSWITCH JACK Use the supplied single button footswitch Crate model CFP 1 or an equivalent to achieve silent remote channel switching Plugging in the footswitch deactivates the front panel channel switch 5 STANDBY SWITCH This switch should remain turned off when the unit is first turned on in order to allow the tubes to warm up properly before high voltage is applied to them The Standby switch should also be turned off dur ing extended breaks in playing when the amp is left on This will help ensure longer tube life POWER SWITCH This switch applies power to the unit when switched to the on up position The Standby and Power switches light up when on CRATE ET 500H Amplifier SPEAKERS 50 WATTS RMS CRATE O Ox SPEAKER IMPEDANCE 8 16 EXT MAIN 43 MODEL GT 500H USE FIRST 18 19 Rear Panel 17 AC LINE CORD not shown Connect the male end of this heavy duty power cord to a properly grounded AC power outlet of the correct voltage DO NOT attempt to defeat the ground pin of the power cord If your amplifier was pur chased outside the United States se2. CRATE 61 30U0H GUITAR AMPLIFIER OWNER S MANUAL CRATE ET 500H Amplifier Congratulations You are now the proud owner of one of the newest and most versatile tube amplifiers available for the guitar the GT 500H This remarkable amplifier offers tremendous flexibil ity and power with two separate channels and silent switching for a uniquely rich palette of tonal variety and simplicity of control over your sound Your GT 500H amplifier is musician made in the U S A using the finest components available Each unit is rigorously tested by skilled technicians and musicians 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 CRATE 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 ONE TECHNICIEN QUALIFIE WARTUNGSPERSONAL ZU UBERLASSEN THIS EQUIPMENT HAS BEEN DESIGNED AND E
3. E TREB MID BASS LEVEL FOOTSWITCH ii _ em _ _ __ __ REVERB PEVERB E INSERT P 2 MAIN SPEAKER PHASE POWER SPLITTER AMP EXTENSION SPEAKER CRATE ET 500H Amplifier TECHNICAL SPECIFICATIONS Output Power Rating 50W RMS 10 THD 8 ohm load 120 VAC Input Impedance 1M ohm Maximum Signal Accepted 2 8V peak to peak Signal To Noise Ratio Channel B 52dB Channel A 58dB Gain Channel B 75dB Channel A 68dB Tone Control Range Channel B Bass 12dB 60Hz Mid 10dB 600Hz Treble 7dB 4kHz Channel A Bass 20dB 70Hz Treble 16 2kHz Line Out Level 375mV RMS full power output Tube Type Preamp 4 12AX7 Power Amp 4 EL84 6BQ5 Power Requirements 120VAC 60Hz 110VA 100 115 50 60Hz 110VA 230VAC 50 60Hz 110VA Size and Weight 11 H x 21 25 W x 11 25 D 35 lbs The GT 500H 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 Crate continually develops new products as well as improves existing ones For this reason the specifications and information in this publication are subject to change without notice CRATE 1998 SLM ELECTRONICS A division of St Louis Music 1400 Ferguson Avenue St Louis Mo 63133 P N 47 547 12 02 98
4. ION GRAPHICAL SYMBOLS GEFAHLICHE SPANNUNG UNBEDINGT IN DER BEDIENUNGSANLEITUNG NACHSCHLAGEN LEZ CRATE ET 500H Amplifier TABLE OF CONTENTS Features The Front Panel Controls and Their Use The Rear Panel Connecting to the Insert Jack Some Suggested Settings System Block Diagram Technical Specifications Features All tube operation for classic vintage growl and howl as you want it when you want it e Two completely independent channels with individual gain and tone controls Quick silent channel switching from the front panel or with footswitch provided e Individual reverb return controls for each channel Buffered insert jack use a stereo to mono Y cord to patch in your favorite effect s Specially designed paper bobbin output transformer for a true vintage sound Drives 8 and 16 ohm speaker cabinets with no problem and delivers lots of true vintage tone tone tone Durable tolex covering and special cosmetic treatments for a unique stage appearance CRATE ET 500H Amplifier CHANNEL A The Front Panel Controls and Their Use 1 INPUT This jack accepts a high impedance signal from a guitar bass keyboard etc CHANNEL A VOLUME This control sets the level of Channel A The sound is brighter at lower settings and can be cranked up for a crunchy rhythm sound CHANNEL A TREBLE This control adjusts the level of high frequency response on Channel A CHANNE
5. L A BASS This control adjusts the level of low frequency response on Channel A When playing at extreme volume levels you might want to back this control down just a Dit CHANNEL SELECT Silent channel switching is achieved with this button When the footswitch is plugged in this but ton is deactivated INSERT JACK This jack provides a line level access point between the preamp and the power amp The output is buffered by a single transistor lt is out of the circuit com pletely when nothing is plugged into it Use a Crate Model CYC6MS mono to stereo Y cord or a Y adapter with extenders For more details refer to the section Connecting to the Insert Jack on the following page CHANNEL B GAIN Use this control to achieve sounds ranging from bluesy crunch to full tilt hard rock rhythm Experimenting with a combination of the gain and volume controls on the amp along with your guitar s volume con trols can produce a wide variety of useable sounds CHANNEL B TREBLE This control adjusts the level of the high frequency response on Channel B CHANNEL _GT 500H 5 4 6 a Y j 8 M J i 3 LEVEL LEVEL A LEVEL B FOOTSWITCH STANDBY POWER 9 CHANNEL B MID This control adjusts the amount of 10 11 12 13 14 15 16 midrange frequency response on Channel B CHANNEL B BASS This control adjusts the level of low frequency response on Channel B CHANNEL B
6. NGINEERED 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 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 1 1 2 1 4 or less 6 4 3 2 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 UTILISAT
7. e the rear panel serial number label for voltage and current information 18 IMPEDANCE SWITCH For the best performance and least strain on the amp you MUST match the amp s impedance to that of your 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 follow ing combinations of speakers connected in parallel CAB IMP OF CABS TOTAL IMP 16 ohms 2 8 ohms 32 ohms 2 16 ohms 32 ohms 4 8 ohms 19 SPEAKER JACKS Connect the amplifier to your speak er 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 18 is properly set Always use the MAIN speaker jack first then connect to the EXTENSION jack if using more than one cabinet YA Connecting to the Insert Jack The front panel Insert jack 6 lets you patch external effects into the GT 500H just prior to its power amp stage When using Crate s CYC6MS stereo to mono Y cord connect lts 1 4 stereo plug into the amp s Insert jack its send plug into the IN jack of the effect and its return plug into the OUT jack of the effect Another method is to buy or make a stereo to mono Y adapter such as Crate s CA11Y and use two 1 4 signal cables to patch into the effec
8. t as shown below To Insert Jack gt e a RING send Connect to IN jack of effect EN CRATE ET 500H Amplifier ZE Some Suggested Settings SPARKLING CLEAN CRUNCH RHYTHM CHANNEL A CHANNEL B REVERB 900 Oli 25 NOTO RE E _ Mo CHANNEL SELECT INPUT VOLUME TREBLE BASS INSERT GAIN TREBLE BASS LEVEL LEVEL A LEVEL FOOTSWITCH STANDBY POWER WARM amp CLEAN BLUESY GRIND CHANNEL A CHANNEL B REVERB 0900 000969 006 O O V Sy i di 6 26 28 O Do 1 INPUT VOLUME TREBLE BASS GAIN TREBLE 55 LEVEL LEVEL A LEVEL FOOTSWITCH STANDBY POWER BLUESY DIRT DRIVE EM MAD SHRED CHANNEL A CHANNEL REVERB EEE MMI EEE E E i ON THS ONVZ O 1 CHANNEL SELECT INPUT VOLUME TREBLE BASS INSERT GAIN TREBLE MID BASS LEVEL LEVEL A LEVEL B FOOTSWITCH STANDBY POWER TRY THESE AT MIDNIGHT CHANNEL A CHANNEL REVERB GE E E E ES EEE E eee NT o INPUT VOLUME TREBLE BASS INSERT GAIN TREBLE BASS LEVEL LEVEL A LEVEL B FOOTSWITCH STANDBY POWER CRATE ET 500H Amplifier System Block Diagram SECOND CHANNEL A GAIN CHANNEL A TONES amp VOLUME FIRST VOL TREB BASS INPUT pe dci O CHANNEL B TONE PRE CHANNEL B EMPHASIS TONES amp LEVEL SECOND GAIN FOURTH GAIN GAIN amp FIFTH o L 5 GAIN STAG
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