Strellis.com

Emu Drumulator Custom Sounds

I replaced the sounds of my Drumulator (it has MIDI!) way back in 1994. At the time I had to write my own custom code and reverse engineer the EPROMs. The sounds are recorded in 8-bit uLaw around 24kHz, The memory map for the sounds is fixed in the OS EPROM. I don’t know the locations in the EPROM to change to alter this. I just matched the length of the original sounds.

Drumulator circuit board

You can obviously mix the ROMs around but they are fixed in their sound groups as noted below. I spent many 10s of hours making these files so that the sounds fitted within the fixed sample time allotted for each sound.


Drumulator sound EPROMs

I've made custom sounds from Roland TR808 and TR909, Linn LM-1, Linn 9000, Sequential Circuits Drumtrax, Roland R8, a professional kit and a Fairlight CMI IIx.

Audio examples

OK that's all well and good but how does it sound?

Cymbals:

The cymbal takes up an entire single EPROM. There are nine choices of Cymbal:

Single EPROMs are 27128 based but it is possible to put two banks worth of sounds in one 27256 EPROM and use a small switch mounted on the EPROM to switch between them. Of course you don't have to switch over all the sounds thereby increasing the sonic palette.

My Star Shine song at the bottom here: www.strellis.co.uk has SCI Drumtraks sounds in my Drumulator triggered over MIDI using a sequencer! Perverse I know :)

Installation Instructions

Download the installation instructions

Pricing Information

Here are a set of dual bank EPROMs with their individual switches. In this case, this set switches between TR808 and TR909.

Dual Bank EPROMs

Please PayPal the total amount and include a note as to which items you would like to the following PayPal email address:

mail me

Postage costs per order (any number of items):
UK - 2.00 GBP
Europe - 3.00 GBP
North America and South America - 5.00 GBP
Australia, New Zealand, Japan - 6.00 GBP

Thank you very much and I hope you enjoy these sounds as much I do.

email me