Peavey The Classic User's Manual
Contents
1. theClassic Your new Classic amplifier ie designed and engineered to give you output and performance comparable to that of much larger and more expensive units Many months of intensive research and development have gone into making this one of the best performing and most reliable amplifiers ever offered at any price The Classic is powered by two 6L6GC power tubes 50 watts RMS 5 THD All power circuits are push pull for more consistent and dependable performance The Classic features 2 channels bright and normal with 4 inputs and a complete brace of controls including bass and treble controls middle control master volume control reverb and tremolo controls The Classic is truly a professional s amplifier at a beginner s price 1 2 Two sets of inputs are provided for tonal preference They are labeled Bright 1 amp 2 and Normal 1 amp 2 The bright inputs provide more treble response for a Brighter sound from your instrument The normal channel provides a more normal response with no automatic treble or bass boost In most cases when plugging in your instrument you should use either Bright or Normal input jack 1 Input 2 is the low gain input and should be used if the signal from your instrument tends to overload distort input 1 When two instruments are plugged into jacks 1 and 2 the circuit automatically balances the ge n of the two inputs so that the sensitivity of both are identical 32. OHMS 70 DB Short Ckt B Distortion 1 KHZ Rated Output Less Than 0 5 THD c Frequency Response 3 DB Down 40 HZ amp 25 KHZ D Tone Controls 12 DB 50 HZ amp 5 KHZ E Middle Control 10 DB Cut F Reverb Control Continuously Variable with Footswitch Cut off G Tremolo Controls Variabledepth amp Rate with Foot switch Cut off H Master Volume Used in Conjunction with Input Volume to Produce Over drive Measured with Reverb and Tremolo full CCW Signal to noise ratio in DB below rated output Specifications and schematics published in this manual are subject to change without notice PEAVEY ELECTRONICS CORP 611 10th Avenue Meridian Mississippi
3. 4 Both the bright and normal channels have separate volume controls These volume controls set the gain of the input preamp thereby controlling the sensitivity of the preamp not the POWER of the amp It is entirely possible for the amp to be driven to full power output on very low volume settings if the signal from your instrument is extremely high Please remember that the volume control does not indicate power output but the Gain of the preamp 5 The bass control varies the amount of bass response in the system and is very effective in achieving a balanced tonal blend 6 The middle control enables the musician to tailor the vital mid range response Experimentation with the unique middle circuit will show that it is much more effective than conventional circuits 7 The treble control varies the high end response of the amplifier 8 The reverb control determines the amount of delayed signal reverb blended into the output This circuit is able to produce tremendous sustain and clarity by properly damping the driver coils of the reverb unit The reverb is effective in BOTH channels 9 The depth control is used to vary the amount of amplitude modulation tremolo of the output signal The operation of this control is conventional and should present no problem in adjusting for the desired effect 10 The rate control determines the speed with which the signal is modulated This control varies the speed of the tremolo master osci
4. fuse is located within the cap of the fuse holder and should be replaced with one of the proper value if it should fail It is necessary that the proper value fuse be used to avoid damage to the equipment and to avoid voiding the warranty If your amplifier repeatedly blows fuses the unit should be taken to a qualified service enter for repair 14 The line power switch is of the three position type with the center position being off The three position switch has two ON positions one of which is used to ground the amplifier properly One of the ON positions will yield the least hum or popping when the instrument is touched and this is the position that should be used For your safety we have incorporated a 3 wire line mains cable with grounding lug It is not advisable to remove the ground pin under any circumstances If it is necessary to use the amp with the old two prong sockets a suitable adaptor should be used Much less noise and greatly reduced shock hazard exists when the amp is operated with the proper grounded receptacle 15 The main speaker output jack 1 is a switching type and must be plugged into before the external speaker jack 2 becomes functional The output impedance of these amplifiers is 4 ohms TOTAL Other laad impedances can be used with a sacrifice in performance It is not recommended that less than a 2 ohm load be used on these amps to avoid undue loading of the output tubes 16 The external speaker jack 2
5. is designed to allow use of additional speaker systems with the amp This jack does not become operational until the main jack 1 has been connected to a speaker It is advisable to note that we have provided additional power in this amp to drive more than one speaker system This additional power could be more than one speaker system can handle These and all other high power tube type amplifiers must be used in the proper manner to avoid damage to tubes and other internal components Below are several instructions that MUST be followed when operating high powered tube type equipment A NEVER OPERATE THE AMPLIFIER WITHOUT A SPEAKER LOAD This amp is equipped with a shorting system on the main output jack to help protect against accidentally turning on the amp without a load If the speaker patch cord is plugged into the amp but not connected to the speakers the amp is NOT loaded and could cause problems if the amp is turned on and operated in this manner The natural inductance of the output transformer can store energy that normally is transferred to the speaker and is capable of developing tremendous voltages These voltages can cause serious internal arcing between the elements of the output tubes and their related circuitry This is the MOST important consideration in the safe operation of your tube amp B The 6L6GC output tubes are the most rugged audio power tubes on the market and should provide long service in the output circu
6. it Each tube has a keying pin moulded into the base to index the pins into their proper positions When installing or removing the tubes it is possible to break off these index pins by bending the tube too much in its socket Use extreme caution when handling the tubes UNDER NO CIRCUMSTANCES SHOULD TUBES WITH BROKEN OR MISSING INDEX PINS BE INSERTED IN THE SOCKETS If a tube is inserted in the improper manner wrong indexing the output stage will instantly be damaged when the unit is turned on Use of tubes with broken or missing index pins voids the warranty 17 The footswitch jack is of the stereo type and is used to plug in the footswitch for remote control of the reverb and tremolo effects Any footswitch with the standard stereo phone plug and a shielded cable can be used Footswitch is optional on the Classic PEAVEY ELECTRONICS TECHNICAL SPECIFICATIONS MODEL CLASSIC POWER AMPLIFIER SECTION A Output Power 1 KHZ 117 VAC Line de Rated Power 50 watts RMS rated load 4 OHMS 2 Power vs Distortion LOAD IMPEDANCE 8 4 2 4 OHMS OUTPUT 5 THD 37 50 40 Ee w B Peak Output rated load 5 AMPS amp 20 VOLTS 100 Watts c Music Power Output rated load 70 Watts RMS 5 THD PRE AMPLIFIER SECTION A Input Characteristics Tone Controls Full CW Volume 12 00 Master Full CW 1 Sensitivity 30mV 1 KHZ 2 Input Impedance 330 K OHMS 3 Noise 60 DB Open Ckt 65 DB 50 K
7. llator and should provide any speed desired for modern music The reverb and tremolo features are controllable from a remote footswitch 11 The master volume control is very useful for obtaining a number of effects The most common use of this control is for obtaining overdrive and sustain at low sound levels Another valuable use for this control is for controlling the response and noise of the amp in a recording studio The master volume control is the final gain determining element before the signal is fed into the output amplifier and could more accurately be called a sensitivity control To obtain maximum overdrive and sustain the individual channel volume controls should be set near maximum and the output of the system should be adjusted with the master volume control You will discover that many different and pleasing harmonic effects can be obtained by trying different settings of the tone volume and master volume controls It has been found that when operating the amp in the overdriven condition lower settings of the treble control tend to give a smoother natural distortion characteristic The normal background noise hiss hum etc can be very effectively controlled for recording studio applications by use of the master volume control To reduce these noises reduce the setting of the master volume control 12 The pilot light indicates when the electrical supply mains is supplying power to the amplifier 13 The
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