Reviews and questions about the entry-level MPC500
User avatar
By stefski Fri Jan 05, 2007 9:26 pm
Hey guys.

I sampled some arpeggio'd notes from my mini korg before I left the house. So I'm on a desert island trying to throw those into the mix, just for measure while practicing some other functions along with the manual. The samples are just half a measure long stereo waw-files. There's nothing unordinary to them other than that it's a 32 bit sample - I have considerably less elaborate equipment that can handle the data and convert it to its liking locally!:

731 kb
44100Hz
32-bit float
4.240 secs

Ok so I had a lot of drums sounds going here. But even when I scaled them down to just kick, snare, hi-hat, claves the mini korg sample wouldn't play through!! It starts playing then just stops. I don't see any pattern to this happening. It does start messing things up

The MPC 500 has up to 32 voices of polyphony (depending on processing).

So I tried at the hotel (wall outlet - thinking battery power might affect "processing" (whatever t f that's supposed to mean anyway) and as soon as I use more than four or so drum samples in a programmed rhythm (not even simultaneously - as in polyphony) .

I am not using a lot of effects (other than what's on the master as default)
I have not hidden any mutes from one pad to the other in the program pad setup - haven't even gotten to that part on the 500 yet.

I uploaded one of the weird samples here, feel free to give it a go with your own drum programs. I used it mainly with note on programming, nothing fancy but you will also hear from this example that I really can't dabble with mono samples for this stuff, if that could prove to be an issue besides the obvious lack of proper sample formating.

http://www.sendspace.com/file/94ob5t

You will notice how playing it from the mpc 500 without anything else isn't gonna be a problem. But just try triggin this on top of a drum program. See if it even plays through once. Do I really need to format the samples going into the mpc500 into 16 bit linears? Oh, btw it hasn't been a problem for my other drum sounds that are of similar data format.
User avatar

By Avene Sun Jan 14, 2007 1:13 pm
My samples are all 16bit, I still have serious issues with polyphony. I'm still amazed that I've not encountered anyone else having the same problem until reading your post here.

I've written to Akai about this, but have not heard back from them. I have no idea either what the processing is that causes the polyphony reduction. I can't even manage 8 voices of polyphony on my MPC500, no matter what. It's ridiculous! In this day and age 32 note polyphony shouldn't be a problem at all. Great machine, if only it worked as it should!
User avatar

By stefski Mon Jan 15, 2007 9:30 pm
Avene wrote:My samples are all 16bit, I still have serious issues with polyphony. I'm still amazed that I've not encountered anyone else having the same problem until reading your post here.


I read my post and I can see how I just started whining without testing it with strictly 16 bit samples. Since I sorta let this slide but I am gonna stress test once I get my stuff together at teh house (back from a trip).

So far I'm doing good with more chops but yeah it's not a lot of fun if you can't do a lot of sampled phrases. HAHA I just realized there's too many banks of pads on this thing.

I talked to my boy at Akai he's like working the Akai booth for Winter NAMM, says Akai's bringing the heat for real this year. I'll just copy + paste some of his last e-mail:

MPC 200, features:
- Same powerful sample engine as in the MPC 500, now in an even more portable package
- Two voice polyphony (depending on processing)
- Two sturdy pads A1-A2 we just got rid of the rest, no use
- Yo man check out the 2 levels function that sh.t is bugged out