Program Edit Mode
KB3 Editor: The Tone Wheels (TONEWL) Page
7-86
Upper Tone Wheel Keymap
Use this parameter to indicate the keymap (and thereby the samples) to use for the upper
tone wheels. You can use any keymap, though you must specify a keymap that uses looped
samples for KB3 Mode to work correctly.
Upper Volume Adjust
Since sample volumes can vary, while the volume of DSP-generated waveforms will remain
consistent, you may find it necessary to adjust the level of the sample-based tone wheels. This
parameter lets you adjust the amplitude of the upper (sample-based) tone wheels relative to
amplitude of the DSP-generated tone wheels.
Number of Tone Wheels
This parameter lets you specify the number of tone wheels used by a KB3 program. The
classic tone wheel organs used 91 tone wheels, though the lowest 12 were for the pedals
only. Therefore, you may find 79 a good number of tone wheels to specify for realistic organ
emulations. This would leave you 88 voices for other programs. You can specify up to 91
tone wheels. The number of Forte SE voices used by a KB3 program is (number of tone
1) / 2, rounded to the next highest whole number if the result is a fraction. So, for
example, with 79 tone wheels specified you would use 40 voices. Keep in mind that these
voices are permanently allocated and running while the KB3 program is selected, and cannot
be stolen. The additional voice used by KB3 programs is for keyclick.
Organ Map
The organ map controls the relative amplitude of each key, per drawbar. Like the wheel
volume maps, these maps are based on measurements we’ve made on actual organs. Equal
uses the same volume for each key and drawbar, and is not based on a real B3. Peck’s is a
good normal map, from a B3 in good condition. Eric’s is a bit more idealized; it’s smoothed
out, but less realistic. Bob’s is more uneven, based on an old B3.
Wheel Volume Map
The wheel volume map determines the volume level for each tone wheel. We’ve provided
several tone wheel volume maps here, based on measurements we’ve taken on different
organs. Equal is a map with all tone wheels at the same volume. It’s not based on a real B3.
Bright
is a good normal map, based on a B3 in good condition. Junky is based on a B3 with
an uneven, rolled-off response. Mellow is somewhere between Bright and Junky.
You can also apply EQ to control wheel volumes based on the frequencies of each tone
wheel. See
KB3 Editor: The EQ Page on page 7-94
.