Peavey F800B User's Manual
Contents
1. i a e oie sb H ro ko of O oo 8 e TE oe o ofi 0 PEAVEY ELECTRONICS TECHNICAL SPECIFICATIONS MODEL F 800B L POWER AMPLIFIER SECTION 800 MODULE A Output Power 1 KHZ 117 VAC Line 1 Rated Power 400 W RMS Rated Load 20HMS 2 Power vs Distortion LOAD IMPEDANCE 8 4 2 1 oHms OUTPUT O 1 THD 150 260 410 160 w OUTPUT 5 THD 170 290 450 220 w B Peak Output Rated Load 20 AMPS amp 40 VOLTS 800 WATTS Es Music Power Output Rated Load 500 WATTS RMS O 1 THD D Froquency Response 3 DB Down 40 HZ amp 15 KHZ E Sensitivity Rated Power amp Load 800 mV F Input Impedance 10 K OHMS M PRE AMPLIFIER SECTION A Input Characteristics Tone Controls Flat Volume 12 00 1 Sensitivity 30 mV 1 KHZ 2 Input Impedance 330 K OHMS 3 Noise 60 DB Open Ckt 68 DB 50 OHMS 74 DB Short Ckt Distortion 1 KHZ Rated Output Less Than 0 1 THO Frequency Response 3 DB Down 40 HZ amp 30 KHZ Tone Controls 20 D8 50 HZ amp 5 KHZ Middle Control 20 DB Cut 6 Channel Equalizer 12 DB each Channel Distortion Control Variable Harmonic Distortion with Footswitch Cut off Slope Control Switch s2. The new Super Festival Series Amplifiers have been designed to fill the requirement for a rugged extremely powerful unit that will stand up under continuous road conditions The solid state circuitry of the 800 series features ten high energy output devices mounted on a massive aluminum heatsink As added insurance against failure we have added forced air cooling to maintain Optimum operating temperature under the most severe playing conditions The many features of the F 800 series amplifiers give them the tonal flexibility sustain and power needed to duplicate the sound of almost any amp and to generate many new sounds at previously unattainable sound levels Our unique overdrive distortion circuitry allows the musician to duplicate the sound of vacuum tube type amplifiers driven into overload The full compliment of normal tone controls with the added flexibility of the six channel equalizer give the F 800 unmatched tonal variation The F 8006 The guitar version of the F 800 has reverb tremolo distortion overdrive and fuzz Overdrive is not the same as fuzz and these two effects may be combined for very interesting distortion effects The fuzz in the F 800G is very different from conventional circuits since it is a two channel fuzz that allows the blending of both harmonic and fundamental signals to produce a full sounding distortion or the conventional fuzz sound The F 8008 The bass version of the F 8008 has all tho foa
3. sustain and distortion effects are possible by using the overdrive and fuzz circuits in combination 10 The phasor control is part of the fuzz circuit and serves to blend in a mildly distorted signal that is of the same phase as the fuzz signal The phasor signal is fatter and fuller than the straight fuzz signal with high order second harmonic distortion content The two fuzz controls may be considered as comprising a two channel mixer enabling the musician to blend as much sharp Fuzz and mellow Phasor distortion as dosirad to get both the proper blend and the proper volume level Experimentation will be required to find the appropriate settings 11 The depth control F 800G only is the tremolo effect element and determines the amount of amplitude modulation present in the output signal 12 The rate control is the element controlling the rate of the tremolo and is available from extremely slow to fest speeds The tremolo is remotely controllable by use of the remote footswitch 13 The six equalizer controls are used to blend the response characteristics desired in almost any conceivable combination The six channel equalizer actually divides the tonal spectrum into six segments with each control allowing precise contro over its particular band of frequencies To set up the amp for the best sound the six equalizer controls should be at the vertical flat position When all the equalizer controls are flat the course balance s
4. UG 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 avcid damage to the equipment and to avoid voiding the warranty Models that have circuit breakers can be reset by depressing the red button If the breaker trips repeatedly take the unit to a qualified service center for inspection 18 The line power switch is of the three position type with the center position being OFF The three position switch has two ON positions which are used to ground the amplifier properly One of the on positions will yield the least hum or popping when the instrument is touched and his is the position that should be used 19 The line cord retainers on the rear panel are provided tor your convenience in storing the AC line cord during transport of the unit 20 The two speaker output jacks of the F 800 are designed to deliver slightly more than 400 WATTS AMS into a two ohm load 28 3 VRMS with the proper line voltage as indicated on the power emp Each output jack is designed for a four ohm load These jacks are parallel internally resulting in the rated two ohm load NEVER OPERATE THE AMPLIFIER WITH LOADS LESS THAN TWO OHMS Because this amp is capable of delivering 20 amps of peak current it is necessary to use very large wire 16 gauge or larger if extremely long speaker leads are necessary
5. elected Low Frequency Roll Off zonmmope Signal to noise ratio in DB below rated output Measured with Distortion control cut off Full CCW PEAVEY ELECTRONICS TECHNICAL SPECIFICATIONS MODEL F 800G POWER AMPLIFIER SECTION Output Power 1 KHZ 117 VAC Line 800 MODULE 1 Rated Power 400 W RMS Rated Load 2 OHMS 2 Power vs Distortion LOAD IMPEDANCE 8 I 4 2 1 OUTPUTG 1X THD 150 260 410 160 w OUTPUT 5 THD 170 290 aso 220 w Peak Output Rated Load 20 AMPS amp 40 VOLTS 800 WATTS Music Power Output Rated Load 500 WATTS RMS 1 THD Frequency Response 3DB Down 40 HZ amp 15 KHZ Sensitivity Rated Power amp Load 800 mV Input Impedance 10 K OHMS PRE AMPLIFIER SECTION A Input Characteristics Tone Controls Flat Volume 12 00 1 Sensitivity 30 mV 1 KHZ 2 Input Impedance 330 K OHMS 3 Noise 60 DB Open Ckt 68DB 50 OHMS 74 DB Short Ckt Distortion 1 KHZ Rated Output Less Than 0 1 THD Frequency Response 3DB Down 40 HZ amp 30 KHZ Tone Controls 2008 50 HZ amp 5 KHZ lle Control 20 DB Cut 6 Channel Equalizer 12 DB each Chan Reverb Control Continuously Variable with Foot switch Cut Off Distortion Control Variable Hermonic Distortion with Foot switch Cut Off Fuzz Control Adjustable Attack amp Harmonics with Foot s ih Cut off Tremolo Controls Variable Depth amp Rate wit
6. h Foot switch Cut Off Slope Control Switch selected Low Frequency Roll Off Signal to noise ratio in DB below rated output a Measured with Distortion Res rb Fuzz amp emolo controls cut off Full CCW PEAVEY ELECTRONICS CORP 611 10TH AVENUE P O BOX 2898 MERIDIAN MISS 29301 PHONE 601 4835365 Specifications published in this manual are subject to change without notice Printed in U S A
7. hould be arrived at through use of the conventional bass middle and treble controls Once the initial coarse balance is obtained the equalizer should be used to fine tune the tone until a satisfactory blend is obtained Operation of the standard tone controls in conjunction with the equalizer will yield almost any tonality imaginable As with any sophisticated system a thorogh understanding of the controls and a fair amount of experience is necessary to achieve the desired results With the overdrive and or the fuzz in operetion it has been found that overboosting the high frequencies tend to emphasize the odd order harmonics and give a more harsh sound Much smoother effects can be produced by using less top end end more middles and lows It is important to remember that the equalizer is a true electronic crossover with each control acting as a volume control for its range The over all loudness is a function of ihe setting of these controls The amp should never be operated with all the filters in the extreme cut position Experimentation will illustrate the fantastic versatility and range of the equalizer circuit 14 The pilot light indicates when power is applied to the amplifier 15 The DIN connector is the recepticle for plugging in the remote footswitch 16 The three wire line cord hes been provided for your protection and should be connected to the proper line voltage as indicated on the back panel DO NOT REMOVE GROUND PIN ON PL
8. is control should be regarded as a level control for the low end response This function is augmented by the use of the first three sections of the equalizer labeled 100 300 600 6 The three position slope control F 800B only is a unique method of tailoring the low end rolloff to suit the playing conditions By rolling off the extreme low end added punch cen be obtained with only slight sacrifice in overall tone Many times the deep base can be sacrificed for the penetration needed for large outdoor gatherings The left position of the slope switch is the flat or full response ion The center position allows a 100 hertz rolloff with the right position providing a 150 hertz rolloff Experimentation will allow the musician to select the proper position to suit his individual taste or playing requirements 7 The reverb control is a return level control and determines how much of the delayed reverb signal is mixed back into the normal signal This control is conventional in operation and should provide more than adequate reverb for any playing requirement The reverb effect is controlled remotely by depressing the appropriate button of the footswitch 8 The overdrive control is used to determine the amount of distortion introduced into the output signal The distortion produced in your F 800 is very similar in harmonic content to the signal produced by an ovar driven tube type emp We have achieved this novel effect through the use
9. of noninear feedback in a unique and exclusive circuit recently developed by our engineers Varying the harmonic structure of the signal has the effect of greatly increasing the apparent loudness since the additional harmonics actually multiply the energy of the signal By adjusting the overdrive control the amount and blend of harmonic distortion can be precisely controlled Dramatic effects are obtained by setting the overdrive featurel and then tailoring the response with the equalizer end tone controls The use of the equalizer in conjunction with the overdrive enables the musician to select any tonal range for emphasis and allows sustain control cf harmonics and coloration mever before possible The dynamics made available with these controls will allow complete freedom in seeking the sound desired for any purpose It is important to note that the overdrive is not a fuzz type of distortion and it is characterized by its fullness and softner naturo The overdrive feature is controllable from the remote footswitch by depressing the proper button 9 The fuzz control F 800G only is the output level control for a conventional clipper type fuzz unit This function is similar to conventional fuzz circuits and produces the characteristic fuzz sounds The F 800G is equipped with a new dual channel fuzz circuit that allows additional distortion effects that are completely different in nature from those achieved with overdrive Further
10. turos of the F 800G with the exception of the reverb tremolo and fuzz The important overdrive distortion feature is included in the bass version and cen be used for many novel effects the longer sustaining bass signals 1 The input jacks of your F 800 are arranged in a unique switching circuit that allows added flexibility in matching various input levels Input 1 has about twice as much gain as input 2 If the amp is being overloaded in this more sensitive jack the less sensitive jack 2 should be used Generally it is best to use the higher gain input if possible 2 The volume control is used to vary the gain of the preamp The setting of the volume control does not indicate the output power but rather is an indication of the sensitivity of the input preamp It is possible to drive the amplifier to full power with very low volume control settings if the output from your instrument is extremely high 3 The treble controls are part of an electronic crossover and serve to boost or cut the high frequencies The treble controls act as level controls for the high frequencies and are augmented by the use of the last three filters of the equalizer labeled 1200 2500 5000 4 The middle control is used to tailor the very important middle frequencies Experimentation will illustrete the importance of this function 5 The bass control is part of an electronic crossover and serves to boost or cut the lower frequencies Th
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