Forum to discuss all matters relating to the MPC1000 and MPC2500 operating systems created by 'JJ' (all versions).
By gogockva Sat Mar 30, 2013 7:43 am
MPC 2500, JJ OS-XL 3.28

I hold the NOTE ON pad + Note Repeat button. It plays "staccato" in 1/16, for example. But when I release the pad, the full sample plays. Some of the pads have this effect, some have no.
How to fix it? Is it a bug or JJos XL feature? I didn't get it in 3.10.
User avatar
By Bugfix Sat Mar 30, 2013 4:39 pm
Sorry but do you want no staccato or no release after last note? :lol: Seems you got some pads with MONO overlap, some with POLY (amp tab)
By gogockva Mon Apr 01, 2013 2:39 pm
bliprock & Bugfix, in Program Edit the same sample is assigned to each pad, Play Mode is set to ONE SHOT (to each pad, by [shift] + all), and the Voice column is set to MONO by [shift] + all.

I forgot to say, that sometimes it happens, sometimes - no :?
By gogockva Mon Apr 01, 2013 6:45 pm
Bugfix wrote:yeah, but I still don't understand what is your target here?

First of all the target is not to hear the full sample when the NOTE ON MONO pad is released during [Note Repeat] is hold. Like it was on a 3.10 version. It's difficult to realize musical ideas when actions are limited. While a FREE version doesn't have this limitation.

Bugfix wrote:what you need it to do?

I used to get the "sliced" by [note repeat] NOTE ON sample on [PAD 6], then got the same sample (but ONE SHOT) on [PAD 10], which set to be muted by [PAD 6]. But now this rhythmical freedom became impossible. Instead of pressing [PAD 10] I already hear this sample, because released [PAD 6] already makes it sound. And makes it RANDOMLY, i.e. I never foreknow, when it can happen.
I got a habbit to work with pairs of pads like 6/10, 7/11 etc, because of its comfort.

It's very unpleasant, when the pad couldn't be controlled. This feature would be GREAT only as an option, but very bad if it's uncontrollable and works differently for pads with equal parameters.
I identified the pad numbers, that reproduce this effect (the numbered ones):

- 14 15 16
9 - - -
- 6 7 8
1 - - -


Just updated to 3.19 - the problem still occurs.

If it's possible, try to follow this bug report:
(MPC 2500, JJ OS-XL 3.28, 3.29)

1. MPC is turned on.
2. Load a sample with a duration more than 2 seconds.
3. Assign this sample to all 16 pads.
4. Go to the AMP tab.
5. Set the "Play Mode" column to NOTE ON for all the samples.
6. Set the "R" column to 0 for all the samples.
6. Hold the Note Repeat button + PAD 1.
5. Sample plays in NOTE ON mode (with 1/16, for example), but when release the
pad, the full sample is playing. Like if it had an ONE SHOT mode.
IMPORTANT: it happens randomly, not always. For pads 1,6-9,14-16.
By gogockva Thu Apr 04, 2013 12:05 pm
It's with updated OS too.
MPC was filled with water a couple of months ago. When it seemed to be dried, I turned in on. Everything worked fine and I exhaled with calm.
But when I got JJ-XL, I got this "thing" in addition. Yesterday the faulty pads 1, 8-9, 14-16 was exchanged with another - 1,4 & 6.
And I also remembered, when the PAD ON LEVEL in [MODE]+PAD10 was set on "1" instead "16" I got the moment when just one button [Note Repeat] gave the sounds of multiple pads. It continued during 20 sec approx.

Maybe it because of hardware? Is it make a sence to change some parts? And what parts in particular, if it so?