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#26967 - 11/11/00 09:52 AM
Re: Midi jitters on JV-2080
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Member
Registered: 08/19/99
Posts: 35
Loc: Farncombe
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Sorry to let you in on this one mate, but I had a JV2080 for a year and a half, and it took me a while to work out it was the 2080 that was causing midi timing problems. Their crap timing is caused by roland using the same processor as the 1080, but making it produce 3 efx's rather than 1, in other words the processor aint fast enough to handle the amount of data. I tried everything with Roland, they took the unit back etc, but got stuff all out of them.
My advice to you is to watch tight envelope settings, lots of lfos and big layered sounds all screw timing up. Oh and dont use too many voices, anything over about 20-30 i found timing got progressively worse. (Seems abit mad forking out for a 64 voice synth doesnt it?!)
Unfortunatly, there is nothing else you can do, I sold mine as i was so cheesed off with it, Ive got a 5080 now, it's too early to say whether this thing has got similar problems, as im not using anywhere near 128 voices, but from what ive heard Roland are now using seperate processors for the effects which means that the synth engine has the same power as the xv3080
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#26969 - 11/12/00 12:35 AM
Re: Midi jitters on JV-2080
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Member
Registered: 08/19/99
Posts: 35
Loc: Farncombe
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I have heard from someone else before that they could notice timing discrepencies even playing anything over 2 notes at the same time! All i can relate to this is that the 2080 never sounded right to me, it seemed to have an uneven feel to it. I think Roland thought that no one would notice, but hey, its so bad sometimes, who wouldnt.
With regards to the 5080, i cant comment too much as Ive only had it a week or so, but i did chuck a very dense sequence at it the other day and it does sound better. However I have noticed 1 thing. Roland have put a "feature" in performance mode called phase lock, which the manual describes as, when you have lots of differerent channels playing at same time midi cant send it fast enough. What it does is delays all parts on the same channel so it can trigger them exactly at the same time. Fair enough! However this isnt all true as I layed up a patch with 8 tones and copyed it to 8 parts in a performance. In theory there should not be a delay because i was only pressing 1 note rather than sending 128 down the wire. But it sloppily triggerer 128 sounds at once, which brings me to think Roland push their hardware right up to the limit, and over to get the specs up.
As I said i am not as bothered as before about this as the 5080 does play much better IMHO, and i bought it knowing about the previous problems, I just couldnt bear to be without that JV/XV sound i suppose!!
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#26978 - 11/29/00 01:01 PM
Re: Midi jitters on JV-2080
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Member
Registered: 08/19/99
Posts: 35
Loc: Farncombe
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No disrespect taken. However I will disagree with anyone who says there isnt a problem with midi timing on the 2080. Whilst I accept that cc data, sysex etc can clog up midi timing on anything. On the 2080 that just makes it worse. When I had one I tried it on numerous systems and setups and the result was the same, sloppy/sluggish response to midi data. I also realise that midi is a serial protocol so that midi events happen sequentially (there will always be some delay with lots of stacked notes). However, what i noticed was that it depends on how you program it. At the time I was using the 2080 as a "do it all synth" ie 16 channels of heavy usage, but within the supposed 64 voice limit. Timing became more erratic with the rhythm channel being used, and use of lfos and tight envelopes. I even spoke to Roland at the time, who after listening to a midi file i sent them, had to admit that the timing wasnt as good as the rest of the JV/XP series. (The XP60 isnt't the same, it only has 1 EFX).
Also, one of the ways i found out there was a problem was when I set a reasonably complex sequence up, with one sound having a delay effect added. Then if i dropped in the drum channel the delay would hiccup, due to the voices being triggered slightly later
In my opinion, it is really down to how you use it. I'm sure no one is going to notice if you've got lots of slow evolving sounds coming out, but if, like me, you were trying to get near enough a whole tune out of the thing, with tight parts, you will notice it.
Oh, and mine had a shocking buzz/distortion in the outputs as well!
I'm just trying to let people know the truth, which is that Roland ripped everyone off by saying that the 2080 can do 64 voices and 3efx properly. They just cashed in on an existing processor design, and wrote a bit of extra software.
I look forward to being flamed!!!
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