Alesis K2661 specifications Program Change Formats, Program Lock, Pan Lock, Volume Lock, 10-9

MIDI Mode

Program Change Formats

Program Lock, Pan Lock, Volume Lock

When the parameter locks are set to On, the three parameters they control do not respond to their respective MIDI controller messages. In that case, you could change the Program, Pan, and Volume settings from the front panel, but not via MIDI.

Program Change Formats

The K2661 can store more programs than the MIDI program change specification can handle (MIDI lets you send program change numbers from 0 to 127 or 1 to 128 only). So we’ve designed a system that makes program selection more flexible. This is true whether you’re selecting programs from the K2661’s front panel, or via MIDI.

Program Change Type	For Use With:
Extended	Other K2661s (or K2600s, K2500s or K2000s) similarly set, plus all
	other instruments that use the Bank Change controller
Kurzweil	K1200s, and 1000s with version 5 software
0–127	Older MIDI devices that transmit program change commands in the
	range from 0–127 only.
QA Bank E	Other K2661s (or K2600s, K2500s or K2000s) similarly set, when in
	Quick Access mode
QA Bank K	K1200s and v5 1000s, when in Quick Access mode
QA 0–127	With the K2661 in Quick Access mode, when using it with older MIDI
	devices

First of all, the K2661’s programs (and all of its objects) are numbered and grouped according to a decimal system, that is, in multiples of ten. This is much easier to keep track of than the binary- oriented groupings of many synths, which feature banks of 8, 16, or 64 programs.

Next, the K2661 gives you 999 program change numbers to work with. These are organized into ten banks of 100 each (the memory banks). A program’s object ID is its program change number, as discussed on page 5-2. This makes it easy to keep track of your programs. The K2661 can use several different formats for interpreting program change commands. The value for the ProgChgType parameter on the RECEIVE page determines which format is used, and the one you should select depends on your MIDI system.

If you expect you’ll always change programs from your K2661’s front panel, you can finish this paragraph and skip the next few sections. In this case, selecting programs is as simple as entering the program change number (the program’s object ID) on the alphanumeric pad, and pressing Enter. Even program numbers above the usual MIDI limit of 127 can be selected this way.

Extended and Kurzweil Program Change Types

In the early days of MIDI, most instruments had small numbers of memory locations, usually 32, 64, or 128. As instruments began to have more memory locations, however, users ran against the limitation of only 128 values for program changes in the MIDI spec. Because of this, Bank Change Controller was added, allowing users to switch between banks of up to 128 programs per bank.

Previous to the addition of the Bank Change Controller, Kurzweil had developed their own method of switching banks by using two program changes, one to switch the bank, the second to call up the program within the bank (as described below). The K2661 can respond to either

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