Reviews and questions about the entry-level MPC500
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By Avene Wed Nov 08, 2006 11:04 am
I've just hit another snag with this thing. Now normally I arrange my songs within a single sequence by copying a 4 or 8 bar loop so they run for 100 bars or so and then erasing parts of tracks in sections I don't need them. I used to do this using the MPC3000 years ago, and do it now on my MPC4000 too. I've got 6 sequences in the memory of my MPC500. Today I tried copying a 2 bar loop 47 times so I'd end up with a 96 bar length sequence. But I couldn't do it. "Insufficient memory" was the response I got! I though ok, maybe I'll copy 31 bars for a 64 bar length... same thing! not enough memory. How could there not be enough memory? This is 2006, not 1986!

It just doesn't make sense. I've only filled about 9 tracks of the sequence I was trying to copy. Just simple stuff too. The MPC500 apparently can handle 100,000 note events just like the MPC1000 and 2500. My MPC4000 can handle 3 times that, 300,000 events. In one bank of songs in my MPC4000 I have 34 sequences that are full songs, some of which run for 160 bars. When I check the memeory usage there's not even 1/3 of the memory being used.. In which case, the MPC500 having 1/3 the memory of the 4000 should be able to handle just as much. So why am I getting this "Insufficient memory" problem?

First it was the polyphony, and now this... It's a joke that Akai claim the MPC500 has 32 voice polyphony and can hold 100,000 note events. It's nowhere near capable of handling either. This is with the latest software update too.
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By descry Wed Nov 08, 2006 12:10 pm
uh...did you buy the 128 memory expansion? if not, you only have 16mb.
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By Upright Wed Nov 08, 2006 12:46 pm
Yeah that is weird :? :?

Sequencer
Maximum events: 100,000 notes
Resolution: 96 parts per 1/4-note
Sequences: 99
Tracks per sequence: 48
MIDI output channels: 16
Song mode: 20 songs, 250 steps per song
Drum pad: 12 (velocity and pressure sensitive)
Drum pad banks: 4
Sync mode: MIDI clock

It doesn't say that ram effects the amounts of sequences or events,but it just might......which kind of stinks. I would go for the ram and see if it resolves the issue.
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By Avene Wed Nov 08, 2006 3:16 pm
Yes, got the 128mb expansion. But that's sample memory.

I don't know, maybe it's because I'm just running it from batteries all the time? I'll plug it in once I find where I put the ac adapter and give it a try with that.
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By Upright Wed Nov 08, 2006 9:25 pm
weird!!1 :?
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By descry Wed Nov 08, 2006 9:57 pm
though as upright said, your problem's quite odd. i just tried copying a 6 sequence, 2 bar, 9 track sequence like you said you did, and i was able to do it with no error.

as far as battery usage goes, i dont think that would change much. maybe you can post the samples your having problems with to akai to see what's up with your error.

By poschec Thu Nov 09, 2006 11:52 am
hi!

got the same problem on the mpc 2500.
theres 1.5 mb of sequence memory. thats enough for "normal" sequences
beeing copied several times. i experienced problems = insufficient memory
when recording some slider movements to several tracks within a sequence.
on an 8 bar loop i just recorded four tracks with slider movement and
four midi tracks with automation. this sequence has about 200kb.
so you can only have 7 sequences at all in your memory.

after recording a slider have a look at the step edit. on every single tick theres an event. there should be kind of a filter, so that only every third or fourth tick gets an event. should be smooth enough and not waste your memory.
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By Upright Thu Nov 09, 2006 12:41 pm
^^Where are you finding sequence memory displayed at??
Last edited by Upright on Thu Nov 09, 2006 12:42 pm, edited 1 time in total.
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By Upright Thu Nov 09, 2006 12:41 pm
^^Where are you finding sequence memory displayed at??

By poschec Thu Nov 09, 2006 1:20 pm
on jj its in the load screen it looks like : seq. free = 1255kb
dont know where its on akai os but i remember it was there somewhere.


i just rerecorded the slider events and there were events only on every fourth
tick. but if youre doing really fast movements its on every tick.
in future ill have to check the events in order not to waste ressources.
i managed to get the sequence down to 50 kb with erasing some midi tracks
and rerecording slidermovements.

By poschec Thu Nov 09, 2006 1:23 pm
Upright wrote:^^Where are you finding sequence memory displayed at??


manual page 107
its in the bottom of the loadscreen.
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By Upright Thu Nov 09, 2006 9:36 pm
poschec wrote:
Upright wrote:^^Where are you finding sequence memory displayed at??


manual page 107
its in the bottom of the loadscreen.


yeah...i've never seen that before weird.......anyway thanks