Post your views and questions about the Akai MPC2500

ByRed_Dragon Sun Apr 16, 2006 9:55 pm
i sample and edit thru the computer.. I haven't hooked it up to the tables yet sorry..

By subvertbeats Tue Apr 18, 2006 10:36 am
Red_Dragon wrote:I don't understand, how and why would the 2500's digital out send a clock over the signal. I don't see a word clock connection on the unit. How can I find out if the 2500's digital signal is clocked? I can't find anything in the manual. How can i ajust the clock?


I dont want to go into a deep explanation here, as it will detract from the real topic of the thread, but digital signal formats like AES/EBU, S/PDIF, and ADAT all embed a clock in the digital signal so the receiving device can synchronize to the transmitted data bits correctly.

The 2500 has no software functions in the current OS to select whether the 2500 slaves or masters the sync.

So we can assume that it does one of the following possibilities

1) Always acts as master

2) Always acts as slave (unlikely as what happens when theres nothing plugged into the digital input?)

3) Some combination of the above. It likely auto clocks itself to the digital input when sampling or monitoring from that input, and the rest of the time syncs to its internal clock.

By subvertbeats Tue Apr 18, 2006 10:40 am
As an additional note though

1) It definitely sounds like a clocking issue (i.e. the pops and clicks sound like that)

2) The evidence however doesnt suggest it is a clocking issue (as I dont have anything connected to the digital I/O - in that case it should just be using the internal clock)

3) If it is a clocking issue then theres a problem with the 2500 internal clock or related components / parts of the OS

By earwolf Tue Apr 18, 2006 12:30 pm
if there is an intermittent popping fault then all 2500's should be immediately recalled to the factory. this is nothing short of outrageous.
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By ph0cus Tue Apr 18, 2006 1:14 pm
mines being delivered tomorrow, i hope it dont pop! :x
ByRed_Dragon Tue Apr 18, 2006 6:23 pm
subvertbeats wrote:As an additional note though

1) It definitely sounds like a clocking issue (i.e. the pops and clicks sound like that)

2) The evidence however doesnt suggest it is a clocking issue (as I dont have anything connected to the digital I/O - in that case it should just be using the internal clock)

3) If it is a clocking issue then theres a problem with the 2500 internal clock or related components / parts of the OS


Your right! It does sound like a clocking issue. When I was working with a digi 002 and a digimax, I only connected the digimax's digital cable to the 002. I heard the same pops. After I snyc the two, the pops where gone. I think the pops are a cause of the new OS. I never heard the pops on the previous OS. I tryed different cables, the audio connection and a DI box. SAME POPS! Roland never had this many problems, but I still like this thing!

Thank you for your replies!