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About the JD800Center

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New JD-800 browser-based editor by Dave Price

We received this original message by Dave Price: 

 

Hi everyone! I originally started building this web-based Roland JD-800 Editor for my own use—partly to see if I could do it, and partly to add functionality that I thought would be useful when editing and organising sounds.
It gradually grew into something much more comprehensive, and I thought it might be useful to other JD-800 owners too—so I’ve decided to share it.
 

You can try it here:

https://midilifecrisis.co.uk/JD800-editor/

Some of its features include:

•     Editing of all four Tones, Patch Common settings and effects
•     Interactive envelope and filter graphs
•     Multi-Tone editing and Tone Solo
•     Undo/Redo and Compare
•     Patch writing and bank management
•     SysEx import and a browser-based patch library
•     Automatic waveform-card detection
•     Hardware edit tracking and automatic navigation
•     On-screen keyboard and arpeggiator
•     Arpeggiator

It runs directly in Google Chrome or another Web MIDI-compatible browser, so there’s nothing to install. You’ll need a two-way MIDI connection between your computer and the JD-800.

The editor is completely free to use... but if you enjoy using it and would like to support its continued development, please click the SUPPORT THE EDITOR option to make an optional contribution.

A quick note about the layout: it’s currently quite large and spacious, so there is a fair amount of scrolling involved. I built it this way to keep everything clear and easy to see, but I may look at creating a more compact version in the future. There are easy links and shortcut keys to make it a bit easier.

The editor currently supports the JD-800 only and is not compatible with the JD-990. If I ever manage to acquire or borrow a JD-990 for development and proper testing, I’d certainly consider adding support for it in the future.

It’s been a lot of fun creating this, and I hope some of you find it useful. I’d be very interested to hear how you get on with it, so please let me know if you encounter any bugs—or if you can think of any features or improvements that would make it even better.

 

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Restored Roland JD800 demo

Tom Szakaly is a virtuoso keyboardist and electronic instrument builder.

His band Noddy's Puncture is considered one of the best ELP cover bands in the world, and Keith Emerson himself made several appearances with them, maintaining a very strong friendship. 

Tom Szakaly comments: 

"Here is the Roland JD800 which I bought - smashed up and also with numerous issues both electronic and mechanical. It might not look 'as new' but it now plays great. I just couldn't see it end up scrapped...!"

 

And here's another video, with Keith Emerson playing. In this case, the JD-800 is used as a controller for a QSR and the Leslie speakers. Fantastic result.

 

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The JD-800 again explained and why it is a great music machine!

A nice pair. Photo: Allan McLoud

Here's a very nice description I found, thanks to Marcel Krol of "Synth DB, The Ultimate Synthesizer Database" site for such well done work!

Description

The JD-800 is Roland's answer to half a decade of hard-to-program synthesizers. Covered in sliders that act as dedicated editors just like a classic analog synth, the JD-800 is an extremely programmable and hands-on digital synthesizer. It is also an interesting and great sounding digital synth with incredible flexibility and control. Internal ROM based waveforms are combined to build your sounds. The sounds are based on Roland's D-50, but updated for the nineties with multimode filters - uncommon but welcome at the time.

The JD-800 came in a tough metal case capped off on the sides with large plastic covers. Programming may be a little too flexible for some users, but once you know what you're doing with it, almost any sound you can dream up can be dialed in and stored.

The JD-800 is a digital synthesizer that uses leading-edge digital technology in conjunction with Roland’s analog synthesizer expertise. Some of its main features are as follows. High-quality sound source The JD-800 uses a PCM sound source which contains 108 different types of PCM waveforms including sawtooth waves, pulse waves, noise waveforms, one~shot waveforms, and looped waveforms. Additional waveforms can be loaded from a WAVEFORM card (SO—JD80 series; separately sold). 

Furthermore, these PCM waveforms can be processed by filters to provide an extremely wide variety of sound-creation possibilities. Front panel design for intuitive sound creation The JD—800 provides front panel controls for all basic Tone parameters, bringing an analog type interface to a digital synthesizer. Since parameter controls are arranged in the order of signal flow, the sound shaping process is easy to understand. You can also adjust the sound parameters in realtime as you perform. 

On—board effects processor The JD-800 has an on-board DSP (Digital Signal Processor) that provides a wide variety of effects. in Single mode, you have eight different digital effects; a three-band equalizer for each Patch, and also distortion, enhancer, phaser, spectrum, delay, chorus, and reverb. 

ln Multi mode, you have four different digital effects; a three-band equalizer for each Patch, and also chorus, delay, and reverb. You can specify how the effect will be applied to each of the five Parts and the Special Part. Two play modes ; Single and Multi The JD‘800 has two play modes; Single and Multi. ln Single mode, the entire JD-800 plays a single Patch. This mode is appropriate when you are playing solo parts. 

In Multi mode, the JD-800 functions as a multi-timbral sound source with five Synth Parts and a Special Part. When used with a sequencer or MTR, this mode allows the JD-800 to simultaneously play all the parts of an ensemble.

External expansion The JD-800 has two card slots; DATA card (M-256E, sold separately) and WAVEFORM card (SO-JD80 series, sold separately). When a DATA card is inserted, you can select from a total of 128 Patches, including the 64 internal Patches. If a WAVEFORM card is used, you can also create sounds using PCM waveforms from the card.

Brand	Roland
Model	JD-800
Device	Synth
Type	Keys
Engine Type	Digital
Engine	Wave
Voices (max)	24
Multitimbral	5
Oscillators	4
LFO	2
Engine Detailed	ROM waveform data, 4 osc. per patch
Filter (VCF)	TVF: Lowpass/bandpass/highpass-filters with resonance and envelopes
Envelope (VCA)	TVA envelopes and pitch envelopes
FX	Delay, Reverb, Phaser, Distortion, Chorus, EQ
Memory	64 patches
Keys	61
Key type	Keys
Velocity	Y
Aftertouch	Channel
Midi	I-O-T
Produced:	1991 - 1993

Legend:		Obvious	Y: Yes, N: No, N/A: Not Applicable
VCO	Voltage Controlled Oscillator	DCO	Digital Controlled Oscillator
LFO	Low Frequency Oscillator	Sub	Sub Oscillator
VCF	Voltage Controlled Filter	VCA	Voltage Controlled Amplifier
Velocity	As with a piano, the harder you hit a key, the louder the sound, unlike most organs which always produce the same loudness no matter how hard you hit a key.	Aftertouch	Pressing a key after you activated it. Channel Aftertouch, no matter which key, it will send a Channel message. Poly Aftertouch, sends the pressure per key instead of the whole channel.
Values for OSC, LFO, Filter, Envelope are per voice unless stated otherwise.

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Thanks again to "Synth DB, The Ultimate Synthesizer Database" for supporting this great music machine!

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Video: A couple of reasons why I still love my Roland JD800 after owning one for nearly 34 years

A very nice  demo of the JD-800 in action. 

Thanks to Tony Drake!

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The Roland JD-800: Deep Dive, Review and Sound Design Tutorial of Roland's 1991 Flagship Synthesizer

Thanks to Scott MacLean we have a new video showing a lot of how the JD-800 works in practice and explaining each section. 

His comments: 

"I realized recently that there are very few (I couldn't find any) YouTube videos that do a deep dive on how the JD-800 works, and how sound design is done on them. So I decided to rectify that.

In this tutorial/review, I go over everything you ever wanted to know about the Roland JD-800: The history of the synth, how the engine works, how to manipulate patches, how to do sound design, how to edit the effects, and more!" 

Thanks Scott!

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Another JD-800 red glue update note

We received this interesting relate about the red glue from Eric Frampton.

"22 de dez. de 2023,

I’ve just finished the lye treatment on my red glue JD-800. I wanted to add my $.02 to the notes:

Someone elsewhere on the web recommended LA’s Awesome Cleaner (undiluted) for spot treatment. I can concur that this softens up the red glue enough that, with a fingernail and some careful scrubbing, you can get excess glue off the exterior lower key rail without removing paint.

All-Purpose Cleaner Spray

When I did the lye treatment, it clouded up (left a white film on) a bunch of the black keys, and fogged up most of the white ones. I used Novus #2 Plastic polish (Fine Scratch Remover) to polish, and everything cleared up very nicely. This was after lye/dish soap/etc.

Plastic polisher

 Hope this helps someone."

About Eric Frampton

Keyboards, keyboard tech

www.ericframpton.com

Classically trained in piano from age five, Eric wears many hats including keyboardist, producer, composer, and technician. He has worked with a diverse range of artists including the B-52s, Boston, Paul Simon, Lionel Richie, Collective Soul, Yanni, Billy Currington, Mother’s Finest, Greg Manning, Tate Stevens, Stuck Mojo, and Fozzy.

Eric has written six musicals, performed on hundreds of album projects, produced commercial music for everyone from the Atlanta Braves to the QVC network, and even recorded cues for a couple of feature films.

You can also catch him performing with his 80’s tribute band, Electric Avenue.

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Thanks Eric Frampton!

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