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manual abstract
When only the Normal Jack is used, chorus signal which is the mixture of normal and effect signals is sent through the Normal Jack. If, however, both Effect and Normal Jacks are used simultaneously, effect signal is sent through the Effect Jack, while normal signal is sent through the Normal Jack. (If the Chorus Selector Switch is set to OFF, normal signal is sent from both jacks.) Mf using a keyboard, connect it to the Sub in (Post Distortion, EQ & VOL; The input signal is sent to the Chorus and Reverb, then to the main amplifier.) or Low Input Jack. ^The JC-120H is an amplifier that does not include speaker, therefore you can set up the speakers you like and thoroughly enjoy its features. Note 1) Be sure to set up two speakers (for Land R) with the JC-120H. Otherwise, chorus effect is not obtained. Note 2) if the speakers are located too far from or near to each other, natural chorus effect is not obtained. Guitar Speaker System IMPORTANT NOTES • Operating this amplifier near a neon or fluorescent lamp may cause noise interference. If so, change the position or the angle of the guitar. • If the reverb volume is set too high, noise may be heard, so turn down the reverb volume or change the position of the amplifier. »Turn the volume of this amplifier to zero before connecting or disconnecting the plug, to protect the speaker from excessive strain. »When setting up this amplifier with a guitar, connect the connection cord to the guitar first, then to the amplifier. When disconnecting, pull out the cord from the amplifier first and then from the guitar. • Avoid giving a strong shock to this amplifier, and do not move it while it is operating. • Do not use this amplifier in extreme humidity or heat, or where it may be affected by dust. • Clean this amplifier with mild detergent, and do not use thinner. Use the specific fuse when replacing. SPECIFICATIONS Output..........60W(80) + 60W (80), 80W (40) + 80W (40) Input Jacks.......HI, LOW, (-32 dBm/1 MO) Controls.........Volume Hi-Treble \ Treble I > 4 Band Equalizer Middle Bass J Effects..........Distortion Reverb Chorus Rate Chorus Depth Switch..........Chorus Selector Switch Jacks • • • •....... • Speaker Out (80 Min/Each) Sub In (0 dBm/130k0) Line Out (0 dBm/2.8kO) Distortion Foot Switch Reverb Foot Switch Chorus Foot Switch Consumption...... 400 VA Dimensions....... 574(W) x 240(H) x 290(D) mm 22-5/8" x 9-7/16" x 11-7/16" Weight..........15.5kg/34 lb 3 oz Accessories.......Vinyl cover Specifications are subject to change without notice. IN CASE OF TROUBLE If this amplifier does not operate properly, check as shown right. If the trouble cannot be remedied, please contact your nearest service center. Sympton Cause Action to be taken The Power Indicator does not light and no sound is heard, even if the Power Switch is turned on. »The power cable is not securely connected. • The speaker cord is not securely connected. • See if the power cable is securely connected. • See if the speaker cord is securely connected. The Power Indicator lights up, but no sound is heard. • The volume of the amplifier or guitar is set too low. • There is something wrong with the connection cord. • Turn the volume up. • Exchange the cord. There is no Chorus effect obtained. When the Chorus Selector Switch is set to FIXED When the Chorus Selector Switch is set to MANUAL • The Foot Switch is turned off. • Only one speaker is connected . • The Foot Switch is turned off, or the Depth Knob is set too low. • Only one speaker is connected , • Press the Foot Switch. • Connect the speakers to L and R. • Press the Foot Switch, or turn up the Depth Knob. • Connect the speakers to L and R. Hum or noise is heard. • There is something wrong with the connection cord. • Connections are not securely done. • Exchange the connection cord. • See if the cords are securely connected. • Connect the power plug upside down. The volume is too low, and the distortion effect is too weak. The Low Input Jack is used. Connect to the High Input Jack. There is no reverb effect obtained. The Foot Switch is turned off. Press the Foot Switch. There is no distortion effect obtained. The Foot Switch is turned off. Press the Foot Switch. OPTIONS Foot Switch FS-1 Foot Switch FS-2 [^Roland...