Drawbars; Programming The Organ Timbre - KETRON SD1 User Manual

Drawbars

Thanks to the very powerful timbre motor of the SD1, it is possible to reproduce very accurately also the sounds of classic electromagnetic
organs, among which the Hammond‚ certainly is the most famous one with the most important timbre. If you do not know what an electro-
magnetic organ is, keep in mind that their timbres used to be mixed using so-called drawbars, with a specific harmonic corresponding to each
of them. In order to compose the timbre, the required harmonics used to be added on different levels. The SD1 reproduces these timbres dis-
playing the drawbars that can be controlled in real time by a number of buttons on the panel.
Simply press the DRAWBARS button to activate the Drawbars mode. For a simpler use, the SD1 has been equipped with sixteen organ timbre
presets, each of which is associated to one of the VOICES buttons which can be called up at any time.

PROGRAMMING THE ORGAN TIMBRE

If you wish to modify a preset and program your own settings, press F7 Edit Voice Drawbars on the main display page, while the DRAWBARS
button is activated. The SD1 displays a page with the single settings of the Drawbars and the other parameters that can be programmed.
The single harmonics and the buttons on the panel have been associated among each other as follows:
16' VOLUME DRUMS +/-
5 1/3' VOLUME BASS +/-
8' VOLUME CHORDS +/-
4' VOLUME ORCHESTRAL
2 2/3' VOLUME LOWER
Due to the fact that the Drawbars page also contains parameters that can be called up using the funciton buttons, the VALUE +/- buttons are
enabled to control harmonic 1' only if these parameters are not selected.
As usual, pressing both buttons relevant to a Drawbar at the same time put the harmonic to zero.
The SD1 also allows you to control a number of particular features relevant to the original organ timbre, to be called up with the function but-
tons and the CURSOR +/- buttons and modified with the VALUE +/- buttons. These parameters are described in detail in the following:
F1 Click: activates the typical noise when the sound of the electromagnetic organ starts.
F2 Sustain: an effect used on the electronic organs of the sixties and seventies, extending the decline time of the timbre; the relevant
value is programmed using the VALUE +/- buttons.
F6 Percussion: this is a basic feature of the Jazz and Rock organ sound. The percussion introduced is to be chosen among 4' and 2 2/3' by
pressing the F6 function key. The percussion volume is modified using the VALUE +/- keys.
F7 Effects: this allows you to access the typical effects associated to the electromagnetic organ, i.e. Chorus and Vibrato. The Vibrato can
be applied to the oscillator (Dco), the amplitude (Dca) or the filter (Dcf) with a global speed control (Rate). Pressing CURSOR
+/- you select the parameter and pressing VALUE +/- you modify the quantity. To go back to the Drawbars page press once
more the F7 function button.
Each configuration of the nine Drawbars can be saved into a preset, that can be called up with the VOICES buttons and whose name appears
on the top of the display. Proceed as follows to store a Drawbars combination:
Press SAVE/ENTER.
If you do not wish to modify the name, press F10 Save to confirm.
If you wish to modify the name, digit the letters using the keys of the keyboard and move with the CURSOR +/- buttons. Then press F10 Save
to confirm.
The F9 Default function restores the original factory set combinations.
The F4 Undo function restores the last combination.
The F5 Escape function deletes the storage operation.
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SD1 Owner's Manual
2' VOLUME RIGHT
1 3/5' PAGE +/-
1 1/3' CURSOR +/-
1' VALUE +/-