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Resumen del manual
To take full advantage of this amplifier, and to ensure years of trouble-free service, please read this Owner's Manual in its entirety. FEATURES • 120 watts (rms) of output power; 2 channels of 60 watts each. Channel 2 is equipped with Roland's renowned chorus effect. • Two input jacks (high-gain and low-gain) accommodate virtually any guitar. • Both channels contain a Bright switch for greater tonal control. • A three-spring reverb unit produces a warm, distinctive sound. • The reinforced cabinet is designed to withstand the rigors of the road while providing characteristic styling. • Chorus/Vibrato, Reverb and Distortion can all be controlled by footswitches leaving your hands free for playing. • Channel 2 contains an effects loop circuit that allows you to select either a series or parallel connection. Further, it provides selection of a +4dBm or -20dBm input level to match the level of your effects device. FRONT PANEL PANEL DESCRIPTION REAR PANEL 1. Input Jacks Two input jacks are provided. For a guitar with a standard output, use the "HIGH" input. For very high output instruments, use the "LOW" input. 2. BRI (Bright) Switch When this switch is set to ON, a clear sound can be obtained. bright, 9. Vibrato SPEED Knob This knob adjusts the rate (frequency of the sound vibrations) of the vibrato effect. Clockwise rotation increases the vibrato speed. — LINE OUT— 3. VOLUME Knob Clockwise rotation will increase the amplifier's overall volume. 4. TREBLE Control Knob Clockwise rotation will boost the higher frequencies. 5. MIDDLE Control Knob Clockwise rotation will boost the all-important middle frequencies. 6. BASS Control Knob Clockwise rotation will boost the lower frequencies. 7. DISTORTION Knob Clockwise rotation will intensify the distortion effect. "OFF" turns the effect off. 8. REVERB Knob Clockwise rotation will intensify the reverb effect. R UMONO) n UMONO) LEVEL LOOP QÉ1 «(fa b D X I. -FOOT SWITCH- CHORUS REVERB DISTORTION VIBRATO 19 17 16 15 18 14 10. Vibrato DEPTH Knob This knob adjusts the depth of the vibrato effect. Clockwise rotation deepens the vibrato effect. 11. V1B/OFF/CHORUS Switch This knob selects the Chorus or Vibrato effect. When it is set to the "OFF" position neither effect will be obtained. * Neither the speed nor depth of the Chorus effect can be changed. 12. Pilot Lamp This will light when the amplifier is switched on. 13. POWER Switch This switch turns the amplifier on and off. * Be sure to set the VOLUME Knob to "0" before switching the amplifier on or off. You may hear a "DC thump" when switching the amplifier on or off but this is normal. 14. FOOTSWITCH Jacks With the proper footswitch connected to the appropriate jack, you can obtain on/off control of Chorus/Vibrato, Reverb and/or Distortion. * Even when a footswitch is turned on, no effect will be obtained if knobs 7 and 11 are in the "OFF" positions. 15. CH-2 EFFECT LOOP SEND Jack This is the jack from which the dry (unprocessed) signal is sent to the effects device. 16. CH-2 EFFECT LOOP LEVEL Switch This switch selects the input/output level for the Channel 2 effects loop. Change the switch position to accommodate the effects device you are using. When the connected unit's input/output level is high, set the switch to "+4dBm," and when that level is low, set the switch to "-20dBm." 17. CH-2 EFFECT LOOP RETURN Jacks These are input jacks for the return signal from your effects device. Stereo connections (L/R) are possible. To use the unit in mono, use the L(MONO) jack. * When using this unit in mono, the return sound will not be output through the speakers even if you input the return sound to the RETURN R jack. That is, when the L(MONO) jack is not used, only direct sounds will be output (regardless of the LOOP switch setting). * Before you make connections to the RETURN jack(s), be sure to switch the units off. SERIES RETURN L (MONO) Speaker RETURN R RETURN L (MONO) J Speaker 18. CH-2 EFFECT LOOP Switch This switch selects either the series or parallel connection for the Effects Loop circuit. When PARALLEL is selected, external effects sounds and direct sounds (unprocessed sounds) will be mixed. When SERIES is selected, external effects sounds will not be mixed with direct sounds. 19. LINE OUT Jacks Use these jacks to connect the JC-1 20 to another guitar amplifier or mixer, or to a tape deck for recording. A stereo pair (L/R) is provided, but mono connections are also possible (use the L(MONO) jack). SPECIFICATIONS Rated Power output 120W (60W+60W) / 8fl+8n Speakers 30cm (12inches) + 30cm (12inches) Power Supply AC 11 7V, AC 230V or AC240V Power Consumption 132W (11 7, 230, 240V) Nominal Input Level -30dBm/680kfi 0dBm=0.775V Connectors CH-1 : Input Jacks (HIGH, LOW), CH-2 Input Jacks (HIGH, LOW), FOOTSWITCH Jacks (CHORUS/VIBRATO, REVERB, and DISTORTION), CH-2 EFFECT LOOP SEND Jack, CH-2 EFFECT LOOP RETURN Jacks (L/(MONO), R), LINE OUT Jac...