Peavey Artist 240 User's Manual
Contents
1. POWER AMP OUTPUT POWER 1 KHZ 120 VAC Line Rated Power 120 W RMS at rated load 4 OHMS 20HMS Power vs Load 90 W AMS 5 THD into 8 Ohms 120 W AMS 5 THD into 4 Ohms 20 W RMS 5 THD into 2 Ohms PEAK OUTPUT RATED LOAD 8 Amps amp 20V 240 Watts MUSIC POWER OUTPUT RATED LOAD 150 W RMS 5 THD PRE AMP INPUT CHARACTERISTICS Tone controls full cw Volume 12 00 master full cw Sensitivity 20 mV 1 KHZ input Impedance 330 K Ohms Noise 50 DB Open Ckt 55 DB 50 K Ohms 60 DB Short Ckt DISTORTION 1 KHZ Less than 0 5 THD Rated Output FREQUENCY RESPONSE 3 DB Down 40 HZ amp 25 KHZ TONE CONTROLS 10 DB 50 HZ 2008 5 KHZ MIDDLE CONTROL 10 DB 300 HZ REVERB CONTROL Continuously variable with footswitch cut off MASTER GAIN Used in conjunction with input volume to produce overdrive Signal to noise ratio in DB below rated output The ARTIST features an extremely compact enclosure containing either a 12 or a 15 super heavy duty professional grade speaker and is powered by a TUBE TYPE 120 watt RMS 5 THD amplifier A full complement of Equalization controls is featured and in cludes low middle and high frequency controls for total tonal balance between these frequency bands We have built into this series a new type of reverberation cir cuit that delivers over 14 volts RMS to the built in reverberation unit The preamplifiers equalization and reverb circuitr2. eaker jack is designed to allow use of an additional speaker system with the Artist This jack does not become operational until the main jack has been connected to a speaker Due to a special switching jack which connects a separate 2 chm tap on the output transformer a 4 ohm load may also be con nected into this jack thus allowing the amp to put out full power into a total impedance of 2 ohms when an ex tension speaker is desired The output impedance of the Artist is 4 ohms when the main speaker jack is used and 2 ohms when both are used NOTE No less than a 4 ohm speaker system should ever be connected to either speaker jack 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 ries tremendous voltages These voltages can cause serio
3. ible sustain and overload har monics can be generated Experimentation with various combinations of volume control settings will yield an in finite variety of harmonic characteristics and sustain durations These functions can be used in conjunction with the master volume control to avoid driving the power amplifier to full output while seeking the desired effects enabling the operator to obtain sustain and overload effects at very low volume levels such as those required in some recording studio applications 5 6 Both the bright and normal channels have separate volume controls These volume controls set the gain of the input preamp thereby controlling the sen ity 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 7 The bass control varies the amount of bass response in the system and is very effective in achieving a balanced tonal blend 8 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 9 The treble control varies the high end response of the amplifier 10 The reverb control determines the amount of delayed signal reverb blended into the out
4. put 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 11 The Standby Switch removes the B supply from the output tubes while leaving the filament voltage on This function keeps the tubes at Operating temperature and allows for instant operation when the Standby switch is thrown 12 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 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 con trol To obtain maximum overdrive and sustain the in dividual channel volume controls should be set near maximum and the output of the system should be ad justed 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 condi tion lower settings of the treble control tend to give a smoother natural distortion characteristic The normal background noise hiss hum etc can be very elfec tively controlled for recording studio applications by use of the master volume control To reduce these noises red
5. s soon as the combiner button is depressed Reverb The reverb bution activates reverb on both channels
6. uce the setting of the master volume control 13 The pilot light indicates when the electrical supply mains is supplying power to the amplifier 14 The fuse is located within the cap of the fuse holder and should be replaced with one of the proper value if it should fail Itis 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 ser vice center for repair 15 The line power switch is of the three position type with the center position being off The three posi tion 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 a grounding lug It is not advisable to sepelo9oo colo f SOU P e E 0 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 greally reduced shock hazard exists when the amp is operated with the proper grounded recep tacle 16 The main speaker output Jack is where the main speaker must be plugged in The output im pedance of this jack is 4 ohms 17 The external sp
7. us 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 ser vice in the output circuit 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 tne 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 in serted 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 18 A Din Socket is located on the back panel for the Automix footswitch Care should be taken to proper ly mate the connectors of the footswitch plug with the respective socket holes FOOTSWITCH Selector Button As the name implies the selector button allows you to select between the normal and bright channels This button is functional with your instrument plugged into either the series or parallel input Combiner Button The combiner button deactivates the selector button and allows both channels to be in the circuit at one time The selector button becomes inoperative a
8. y is complemented by a MASTER VOLUME CONTROL for even greater contro of sus tain dynamics and sensitivity for recording studio applications Our exclusive AUTOMIX ciruitry is built into this series for even greater flexibilty and on stage versatility Your new Artist features two channels Bright and Normal with four inputs that function along with the Automix footswitch to allow you to play through either channel both channels in parallel or both channels in series Please read the explanation of each input and become familiar with the effects possible with the Automix footswitch 1 The Bright input places the signal from your instrument into the bright channel only This channel provides treble boost for a brighter sound from your guitar 2 The Normal input places the signal from your instrument into the normal channel only 3 The Parallel input places the signal from your instrument into both channels Plugging into this parallel jack is the same as using a patch cord to bridge into the normal and bright channels except that the in ternal circuitry automatically performs the patching function When plugged into this jack both normal and bright channel volume controls are active and the desired blend of each can be found by varying the level of each relative to the other 4 The Series input places the signal from your instrument into both channels in series By placing the channels in series incred
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