I picked up a second hand Akai MPC 2500 a few ago and after tricking it out with the full 128mb of ram, a 40gb hard drive and jjosxl I’ve been having great fun breaking my musical shackles from the computer.
Ok, so the MPC is a computer but the hands on tactile feel make the whole experience much different and I’ve found the learning curve minimal given I have a strong background in music technology although I’m sure I still have much to learn as jjosxl seems to be quite deep.
Here are a few tracks I’ve uploaded to Youtube from the last week or two staring the Akai MPC 2500, Korg MS-20 Mini, Korg Volca Keys, Korg Electribe EMX1, Oberheim Matrix 1000, EMU E5000 Ultra, Roland TR-707 and a bit of delay and reverb.
The sketch employs a delay between setting the signal high and low which is set by the value of the variable tempo_delay. The delay is in ms and converting from bpm to the correct ms delay is simply as case of using the following formula. tempo_delay = (60,000 / BPM) /2.
I’ve been trying a few different methods of connecting modern hard drives to my E-MU sampler. My aim, to reduce the noise to an absolute minimum with the side benefit of possible requiring less power from the ageing PSU.
One of the quirks of the e-mu e5000 ultra and other samplers in the range, is that the power output header on the motherboard for internal hard disks has had it’s pins reversed in order of a standard PC. Plugging in a hard drive to the sampler and turning it on without modifying the power cable will result in +12v being where your hard drive expected +5v and a puff of magic smoke will signal the death of your hard drive.
SATA to IDE coverters
I tried several different converters without success until I came across the WinTech 93205-GB which worked great with standard 2.5″ spinning SATA disks but although SATA SSD drives were detected by the sampler they were not able to be formatted or accessed when pre-formatted as FAT.
The WinTech has a slide switch to select between host and device. Device was selected.
The fix for the reverse power connection was simple, clip through all the cables and connect the red to the yellow and the yellow to the red, swap the ground cables and test with a multimeter to make sure I hadn’t made any mistakes. I took this opportunity to also solder in the tiny 5v power connector for the WinTech in series from the 5v power cable and ground.
To connect the hard drive to the case I used a 2.5″ to 3.5″ mounting bracket with rubber washer to reduce vibration noise and fixed to the top mounting holes for a 3.5″ disk.
Lovely, barely a sound and worked flawlessly.
I wanted more though.
I took to google in a quest to find myself a IDE/PATA SSD hoping that it just might work.