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Main Features
The JC-40 is a 40W stereo-input/output guitar amp featuring a transparently clean tone that faithfully
expresses the true character of your guitar.
5 In addition to a 3-band tone-stack EQ, it also provides a bright switch, giving you a rich palette of
tone settings.
5 Its unique stereo-input design lets you connect a stereo effect unit to the front panel and enjoy a
stereo effect using just a single amp.
5 A beautifully dimensional space chorus effect and a unique vibrato are produced by spatial mixing
(allowing the direct sound and effect sound to mix in the air).
5 With two independent power amps and two custom-designed 10-inch speakers, the JC-40 delivers a
stereo effect and sound that won't get buried in the ensemble.
5 The enclosure is designed for strength and durability, made of hardened fiberboard and equipped
with corner protectors.
5 If a separately sold footswitch is connected, you can turn chorus/vibrato, reverb, and distortion on/off
with your foot.
Dimensional space chorus
This uses two completely independent amps and speakers; one
amp and speaker output the direct sound that is sent from the
guitar, while the other amp and speaker output a sound that is
subtly pitch-modulated. These two sounds are mixed in the air,
creating a softly spacious three-dimensional effect that is warm,
deep, and natural-sounding.
Owner's Manual
CHORUS
MAIN AMP
MAIN AMP
JC-40

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Summary of Contents for Roland Jazz Chorus-40

  • Page 1 Owner’s Manual JC-40 Main Features The JC-40 is a 40W stereo-input/output guitar amp featuring a transparently clean tone that faithfully expresses the true character of your guitar. 5 In addition to a 3-band tone-stack EQ, it also provides a bright switch, giving you a rich palette of tone settings.
  • Page 2: Using The Unit Safely

    ALWAYS OBSERVE THE FOLLOWING Immediately turn the unit off, remove the power cord from the outlet, and request servicing by your retailer, the nearest Roland Service Center, or an authorized WARNING WARNING Roland distributor, as listed on the “Information” when:...
  • Page 3: Important Notes

    Maintenance Intellectual Property Right • Never use benzine, thinners, alcohol or solvents of • Roland and BOSS are either registered trademarks • Do not connect this unit to same electrical outlet any kind, to avoid the possibility of discoloration or trademarks of Roland Corporation in the United that is being used by an electrical appliance that and/or deformation.
  • Page 4: Panel Descriptions

    Panel Descriptions Front Panel INPUT jacks [POWER] switch Connect your electric guitar or effect unit here. If you’re connecting Turns the power of the JC-40 on/off. When the power is on, the a guitar directly, or a monaural effect unit, connect it to the L/ indicator is lit.
  • Page 5: Phones Jack

    Panel Descriptions Rear Panel FS-5L FS-6 FS-7 AC IN jack EFFECT LOOP SEND/RETURN jacks Connect the included power cord. Connect an external effect device. Connect the SEND jack to the input of your external effect device, * Use only the power cord that was included with the unit. and connect the output of your external effect device to the PHONES jack RETURN jack.
  • Page 6: Main Specifications

    Main Specifications Roland JC-40: Guitar Amplifier Rated Power Output 40 W INPUT L/MONO, R jacks: -10 dBu (1 M Ω) Nominal Input Level EFFECT RETURN L/MONO, R jacks: -10 dBu (22 k Ω) EFFECT RETURN L/MONO only: -10 dBu (11 k Ω)
  • Page 7: Block Diagram

    Block Diagram JC-40 Block Diagram EFFECT LOOP PRE AMP LOOP POWER AMP SPEAKER INPUT BRIGHT REVERB L/MONO VOLUME TREBLE POWER AMP MIDDLE VIBRATO BASS CHORUS SPEAKER INPUT DISTORTION SERIES PARALLEL EFFECT LOOP LINE OUT L/MONO RETURN SEND L/MONO LINE OUT RETURN PHONES EFFECT LOOP (series)
  • Page 9 For EU Countries For China...
  • Page 10: Federal Communications Commission Radio Frequency Interference Statement

    For the USA FEDERAL COMMUNICATIONS COMMISSION RADIO FREQUENCY INTERFERENCE STATEMENT This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.

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