Korg KPR-77 Programmable Rhythm

Korg KPR-77 Image

The KPR-77 was Korg's answer to the TR-606 drum machine. Like the 606, the KPR-77 is basically an analog machine. Its sounds consist of bass, snare, two toms, open and closed hi-hats, accent and (switchable) cymbal/clap. Each drum sound's level can be individual mixed via the sliders. Unfortunately the KPR does not sound nearly as nice as the 606 can. But it has a simple LCD programming display sort of like what the TR-505 sports.

Korg KPR-77 Image

It holds up to 48 patterns (3 groups of 16) and two songs. A pattern can hold up to 32 steps. Like the TR-606, the KPR can be battery operated and REQUIRES batteries for retention of your programmed drum patterns and songs when it is turned off! Fortunately a casette out lets you store its memory to tape for offline storage. The KPR-77 has DIN SYNC IN/OUT as well as Tom trigger outs (like the 606) for external control and triggering. However, Korg's DIN Sync is not the same as Roland's DIN Sync. When syncing Roland and Korg gear via DIN sync, they will work however the Korg machine will run at 1/2 the tempo/speed of the Roland unit. This is because Korg uses a 48 ppqn (parts per quarter note) DIN standard whereas Roland's is 24 ppqn. This can be corrected with several devices which will translate 24-48 sync, such as the Korg KMS-30.

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19 Visitor comments
terry
September 27, 2011 @ 1:12 pm
Are the trigger out from the toms normal or inverted?
Calaveras
July 26, 2011 @ 7:00 pm
I use one of these along with my X0Xbox (which is a roland clone of course) and sync via din sync. You just have to either account for the "Roland" sync flying by at 2 measures for every one korg measure, or use 8 beats per measure instead of 4 on the Korg.
Choosing the lenght of the measure is part of the pattern writing procedure, so you should be familiar with it!
For my style of music I am not too concerned as I change the time signature of the rhythm a lot and leave the X0Xbox lines pretty simple.
Oortone
March 5, 2011 @ 5:10 am
Alpha means that you should use an option to switch time scale for the patterns. Similar to the method used for 32 beat patterns and triplet patterns on a TRX0X-machine. That is - the number of steps "per beat" is changed. By doing this - don't have the machine here now so I don't remember the details - you can make a bar on the KPR playing at the same speed as on a TR-machine.
Shadow
February 16, 2011 @ 2:19 pm
The user called "alpha" mentioned that a converter is NOT required in order to sync KPR-77 with Roland DIN-Sync 24 ppqn based equipment by adjusting the timing of the pattern? Does anyone know how to do it? "alpha" what do you mean exactly?
I do not have one of these yet but I wish to get one but I have to be sure first about how I can sync it with the rest of my Roland gear.
Bill
June 21, 2010 @ 3:51 am
I had one of these back in the 80's and I just loved the stereo toms. The trigger out went into my Korg MS-20. I can't believe they both ended up in a skip during a particularly harsh clear out in the 90's when they were considered useless. If only I had known...
 
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  • The link above will take you to an eBay search for this synth to see active listings. If you don't find it there, try looking in our forum marketplace or post a wanted classified.
  • Specifications
  • Polyphony - 6 voices
  • Sounds - bass, snare, hi/low toms, open and closed hi-hats, accent and (switchable) cymbal/clap
  • Controls - Tempo, Volume, Level per drum part and Accent
  • Patterns - 3 Banks x 16 patterns (48 total)
  • Songs - Two
  • Keyboard - None
  • Effects - None
  • Control - DIN SYNC (48ppqn) IN/OUT, Trigger Outs from Toms
  • Date Produced - 1983
  • Resources & Credits
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