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MMD > Archives > November 1996 > 1996.11.17 > 10Prev  Next


MIDI Decoder MTP-1
By Bob Essex

My request through MMD some weeks ago for information about MIDI decoders which would enable me to drive a small roll playing organ from a PC, using a sequencer such as Cakewalk, has borne fruit. Whoopee!

John Wale brought to my home his excellent MTP-1 circuit board which he proceeded to demonstrate using my system. The device is the very thing I have been looking for. It fits the bill perfectly in its 32-note state, and it can be expanded with a second and subsequent boards - in multiples of 32.

The note numbers are programmable so that notes may be omitted, as many small organ scales are not fully chromatic. The outputs from the printed circuit board can be used to drive pallet or chest magnets with a voltage range anything from about 7 to 36 volts.

This was the first time I have met John Wale. He has developed this first product on a tentative basis, hoping it will find a market and enable him to produce it commercially. He is looking for firm interest in the device from mechanical music nuts, like myself, in order to produce the first batch. The first few will be produced at about 50 to 60 pounds sterling (GBP) as a 'ranging shot' but expect this to revised upwards for later models.

He has got my order. It really is _the business_ and I would reccommend it to anyone with dreams of midifying an organ, a roll-punch or perhaps a set of bells! John is on essfc@csv.warwick.ac.uk

Bob Essex bobessex@aol.com

PS - COBS or ROLLERS for GEM 20 and 32 organettes
Is there anyone who has Gem cobs they wish to sell?
Please contact me at bobessex@aol.com

(Message sent Sun 17 Nov 1996, 23:55:55 GMT, from time zone GMT-0500.)

Key Words in Subject:  Decoder, MIDI, MTP-1

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