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Roland JD-800 Resource Centre

JD-800

JD-800 Software / Patches:
Patch Organizer
Free Patches

JD-800 DAC Calibration:
A noise can occur during long release times. If this is the case, you will need to calibrate the unit. Noise itself is the result of improperly trimmed DAC (digital / analog converter). Type of the noise we discuss here sounds somehow like a bitcrusher or a bad working noisegate – it’s not the hiss we talk about here. Here’s the procedure:

  1. To Enter the Test Mode select Multi-Mode
  2. Press and hold: Cursor Left, Cursor Right and then Exit buttons.
  3. Use an instrument such as an oscilloscope to observe the output waveform of MIX OUT L on the rear panel. If you don’t have oscilloscope, you can use headphones and listen carefully with your ears.
  4. Press [NUMBER 7] while holding down [EXIT].
  5. A sine wave with a relatively low sound volume should be output.
  6. Make it a smooth sine wave by adjusting VR1 on the Jack board.

 

JD-800 Factory Reset
Warning: this will delete all of your presets. Please dump them via sys-ex before doing this procedure

  1. Press data transfer.
  2. Page up to select factory preset.
  3. Press YES.
  4. Done.

 

JD-800 Brochures:

 photo jd800_br2.jpg  photo jd800_br3.jpg
 photo jd800_br4.jpg  photo jd800_br5.jpg
 photo sos491-1.jpg  photo sos491-2.jpg  photo sos491-3.jpg  photo sos491-4.jpg

Comments (3)

  1. Hi, re DAC, I get a crackling distortion sound as the effects fade away. I hadn’t investigated if it was a particular effect, but by using the Direct Outputs, dry, I get no crackling. Could that be the DAC? Thanks.

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