Peavey Deuce User's Manual
Contents
1. use of the Automix footswitch 15 The master gain control is very useful for ob taining 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 gain control is the final gain deter mining element before the signal is fed into the output amplifier and could more acourately be called a sen sitivity control To obtain maximum overdrive and sus tain the individual channel volume controls should be set near maximum and the output of the system should be adjusted with the master volume control 16 The pilot light indicates when the electrical supply mains is supplying power to the amplifier 17 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 It is necessary that the proper value fuse be used to avoid damage to the equipment and to avoid voiding warranty If your amplifier repeatediy blows fuses the unit should be taken to a qualified ser vice center for repair 2999 l o000ooloo ola z bee ARERR ORS ANZ 18 The line power switch is of the three position type with the center position being off The three posi ton switch has two ON positions one of which is used to ground the amplifier properly One of the ON positions will y2. DEUCE OWNERS MANUAL Printed in USA POWER AMP OUTPUT POWER 1 KHZ 120 VAC Line Rated Power 120 W RMS al rated load 4 OHMS 2 OHMS Power vs Load 90 W RMS 5 THD into 8 Ohms 120 W RMS 5 THD into 4 Ohms 120 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 200B 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 TREMOLO CONTROLS Variable depth amp rate w footswitch cut off Signal to noise ratio in DB below rated output Measured with reverb amp tremolo cut off Full CCW The new Deuce is the latest of this series and now contains the features so often requested on previous models in the Deuce series as well as the many circuit refinements resulting from our con tinuous engineering efforts and field testing Automix is now stan dard in this new Deuce series The Deuce power section is powered by Four extremely rugged and field proven RCA 6L6GC tubes v
3. alves in a push pull paralleled vatively rated 120 watts RMS 5 THD The massive power supply consists of a custom built power transformer delivering energy to series stacked filter capacitors for the ultimate in reliability under field conditions Because we have chosen to build a larger and better regulated power supply than found in competing units the Deuce en joys a substantial advantage in music power that is quite noticable when compared to ordinary transformer matches the tubes to the speakers and allows conser vative operation of the four output tubes well within the tube manual specifications The Deuce is a fully professional portable amplification system utilizing the latest in cir cuitry to give you all the needed features in a reasonable package The versatile Deuce series is available with several different speaker combinations to allow for circuit that delivers a very conser amplifiers The special output personal speaker preferences Your new Deuce features two channels Effects and Normal with four inputs that function along with the Automix footswitch to allow you to play through either channel both channels in parallel both channels in series Please read the explanation of each input and become familiar with the effects possible with the Automix footswitch 1 The Effects input places the signal from your instrument into the effects channel only 2 The Normal input places the si
4. con nected to either speaker jack 22 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 as soon as the combiner button is depressed Reverb Button The reverb button activates reverb on both channels Tremolo Button The tremolo button activates tremolo on the effects channel 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 ihe speaker patch cord is plugged into the amp bul 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 rela
5. gnal 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 effects channels except that the in ternal circuitry automatically performs the patching function When plugged into this jack both normal and effects channel gain controls are active and the desired blend of each can be found by varying the level ofeach relative to the other 4 The Series input places the signal from your in strument into both channels in series By placing the channels in series incredible sustain and overload har monics can be generated Experimentation with various combinations of gain control settings will yield an infinite variety of harmonic characteristics and sustain durations These functions can be used in conjunction with the master gain 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 these required in some studio applications EFFECTS CHANNEL 5 The effects channel gain control sets the gain of the effects channel preamp thereby controlling the sensitivity of the preamp not the power of the amp Itis 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
6. high 6 The treble control varies the high end response of the effects channel 7 The middle control enables the mid range response to be tailored to give the amp that punchy sound so popular in today s music Experimentation with this unique middle circuit will show that it is much more effective than conventional circuits 8 The bass control varies the amount of bass response in the system and is very effective in achieving a balanced tonal blend 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 oscillator and should provide any speed desired for modern music NORMAL CHANNEL 11 The normal channel gain control determines the sensitivity of the normal channel preamp This con trol works in the same way as the effects channel gain control 12 The normal channel treble control varies the high end response of the normal channel preamp 13 The normal channel bass control varies the amount of low end response in the normal channel preamp MASTER SECTION 14 The master reverb control determines the amount of delayed signal reverb blended into the out put The master reverb control is effective on both channels and is remotely switchable by
7. ield 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 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 recep tacle 19 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 20 The main speaker output Jack is where the main speaker must be plugged in The output in pedance of this jack is 4 ohms 21 The external speaker Jack is designed to allow use of an additional speaker system with the Deuce 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 ohm 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 Deuce 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
8. ted circuitry 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 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
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