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Page 2: ...o a power supply only of the type described in these opera tion instructions or as marked on the Component 9 Power Cord Protection Power supply cords should be routed so that they are not likely to be walked upon or pinched by items placed upon or against them paying particular attention to cords at plugs convenience recep tacles and the point where they exit the Component 10 Cleaning The Componen...
Page 3: ...las limites applicables aux appareils numériques de class A de class B selon le cas prescrites dans le règlement sur le brouillage radioélectrique édicté par les ministere des communications du Canada Safety Instructions and Table of Contents Safety instructions 2 3 Introduction 4 Features 4 Unpacking 4 Overview 5 Front panel features 6 7 Rear panel features 8 9 Installation AC power and connectio...
Page 4: ...e Sunfire Classic Preamplifier We believe its sophisticated engineering and meticulous craftsmanship will provide you with many years of listening enjoyment At the heart of the Classic is a high perfor mance control preamplifier with extremely low noise and distortion wide dynamic range and a high degree of control flexibility An optional phono board may be added for precise RIAA phono equalizatio...
Page 5: ...r Contour tone controls Balance Mono Stereo Tape Monitor Tone on off Mute TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE WARNING S N PASSIVE PRECISION INVERSE RIAA PHONO NETWORK 2 AMP AGC OUTPUTS LINE INPUTS PHONO LINE INPUTS REPLACE WITH ORIGINAL TYPE AND RATING ONLY 120 VAC 50 60 Hz R L R L R L MAIN 1 MAIN 2 TAPE TAPE AUX VIDEO CD TUNER MOVING COIL ...
Page 6: ... in circuit whenever the Tape Monitor switch is en gaged 1 Power Switch This is the main AC power switch Flip the switch up to apply power to the unit It is good practice to turn the volume control down before turning on and keep it down until after about 40 seconds of tube warm up time when the MUTE lamp turns off and the ON lamp stops blinking and turns on continuously If you prefer you may leav...
Page 7: ... levels of the two stereo channels In its center position the levels are exactly equal Clockwise rotation reduces the Left channel level while counterclockwise rotation reduces Right channel level Small movements off center produce smaller shifts in the stereo image per degree of rotation than near the extreme left and right position This makes slight trimming of levels more convenient 11 Contour ...
Page 8: ...ger current rating than 2 A 3 Accessory outlets These three unswitched AC outlets are LIVE whenever the unit s line cord is plugged into an active AC receptacle They can be used to supply AC power to other components of your system including your amplifier The total power draw must not exceed 1000W Verify that all component power switches are OFF before plugging any component line cords into these...
Page 9: ...f the CD player so that when you switch from Phono to CD to Tuner the volume level will remain approximately the same 11 Tuner input Connect to the line level output from a FM or AM FM tuner 12 Moving Coil phono input Connect to the output of a turntable equipped with a moving coil phono cartridge Push the rear panel MM MC selector button IN 13 Moving Magnet phono input Connect to the output of a ...
Page 10: ...Do not place heavy objects on top of the unit AC Power Considerations Ensure that the unit is plugged into an outlet capable of supplying the correct voltage specified for your model Care If you need to clean the front surface first turn off the power and then use a slightly damp ened cloth rubbing with the grain Be careful not to scratch the front window Connection Tips Before setting up your new...
Page 11: ...se small response shifts in some systems When plugging the cables into the Classic s sockets be sure each plug is inserted fully into the socket making a tight fit You can plug the turntable line cord into one of the accessory outlets on the rear panel of the Classic preamplifier Moving Coil phono input The rear panel MM MC selector button must be IN for moving coil cartridges The two inputs marke...
Page 12: ...d turntable motor rumble If not filtered out of the audio signal this sub audible energy can overload tape recorders waste amplifier power and drive woofers into excessive cone excursions causing intermodulation distortion audible as muddy bass Normally group delay an unavoidable consequence of the rapid attenuation of sub sonic response can under certain musical circumstances have a just percepti...
Page 13: ...n is in the OUT position If you have a Moving Coil cartridge use the preamplifier s Moving Coil inputs and push the MM MC button inwards System Configurations In most cases the turntable ground wire should be connected to reduce any hum heard in the speakers Never connect a line level source compo nent directly to the preamplifier s MC or MM inputs as they will be overloaded They are specially des...
Page 14: ... system such as the tape deck or turntable When you switch from one component to the next the initial volume would then be similar If you want your CD player to have an extra special sound you can use the Inverse RIAA circuits as shown on page 12 System Configurations CD player Any of the line level inputs such as TUNER CD VIDEO AUX and TAPE can be used by any source component with a line level ou...
Page 15: ... outputs are unaffected by the setting of the volume control or the contour controls System Configurations Tape Deck An external processor can be connected in exactly the same way as a Tape deck The external processor outputs connect to the preamplifier s Tape inputs The external processor inputs connect to the preamplifier s Tape outputs Select the source you would like to listen to such as CD an...
Page 16: ...rive an active subwoofer A third amplifier can be connected to the balanced XLR outputs if you have another set of speakers in a third room Note that all the amplifiers would be playing the same music selection System Configurations If you are using an electronic crossover to bi amp or tri amp your speakers Connect a cable from either of the preamplifier s main outputs to the active crossover s in...
Page 17: ...amplifier has XLR inputs it can be connected to the balanced audio outputs as shown The balanced connections are preferred as they provide superior noise cancellation and are less susceptible to interference than unbalanced lines System Configurations Amplifier ...
Page 18: ...utputs to elimi nate turn on transients It will not interrupt the tape outputs Muting is accomplished by a shorting relay which when it is open is out of the circuit and hence has no effect on the signal It is controlled by a toggling device so muting cannot be partially on This muting system will turn off the signal to your power amplifier at these times For about 40 seconds after the initial pow...
Page 19: ...rent surge which blew the fuse or circuit breaker protecting that entire branch circuit In some houses having duplex AC wall sockets the lower one is permanently live while the upper one intended for lamps is controlled by a wall switch near a doorway was the preamp s AC cord accidentally plugged into the switched socket Is the preamp s AC cord plugged into a clock timer which is presently off or ...
Page 20: ... by many power amplifiers and sometimes to the hum fields of other house appliances such as a refrigerator on the other side of the wall It is important that signal cables in general and the turntable signal leads in particular should not run close to and parallel with AC power cords nor close to a power transformer or motor including that in the base of the turntable As a test you might try and d...
Page 21: ...peaker terminals of each channel but be sure to check with the amplifier manufacturer first some power amps become unstable and burn out when certain values of capacitance are connected at their output terminals A simple cure is to place the power amp near the speakers and use short wires then use long well shielded signal cables from the preamp to the power amp This shouldn t cause any problems u...
Page 22: ... MC Phono is 60 dB The gain may be changed independently of MM Phono as follows 60 dB Stock R4 and R28 are 62ohms 1 2W 65 dB change R4 and R28 to 33 ohms 1 2W 70 dB change R4 and R28 to 18 ohms 1 2W Changing the input impedance of the phono stage Change the jumper position on the headers labeled J6 J9 to the value recom mended by your phono cartridge manufac turer Most moving magnet cartridges wor...
Page 23: ...hall not in any event include property or any other incidental or consequential damages which may result from the failure of this product Some states do not allow limitations on how long an implied warranty lasts and or do not allow the exclusion or limitation of incidental or consequential damages so the above limita tions or exclusions may not apply to you This Warranty gives you specific legal ...
Page 24: ...Manual Part number 913 012 00 Rev C ...
