Kurzweil K2661 Musician's Manual page 190

Basic Effects Mode
A Simple Studio
Now press the CTRL soft button. A screen such as this one will appear:
Scroll the Alpha wheel until the Studio parameter's value is 200 Simple.
The FXBus Page
Now press Edit, and this page appears:
This is the FXBus page for FXBus1. It is where an FX preset is assigned to the FXBus. Put the
cursor on the box containing 200*4 Tap BPM—this is the current FX preset, a four-tap delay
whose speed is expressed in terms of tempo (Beats Per Minute). Use the Alpha wheel to scroll
through the many other FX presets that come with KDFX. Like all K2661 objects, those that are
in RAM (like this one) will have an asterisk in their name, and those that are in ROM will not.
There are three more FXBuses, which you can view by pressing the Chan/Bank buttons. In this
studio they are all empty (No Effect).
Go back to 4 Tap BPM on FXBus1, and play the piano sound from your keyboard. The arrow
next to FX1 flashes, showing that there is audio passing through this FXBus. The arrow keeps
flashing as long as the FXBus is processing audio.
Below the FX preset selector is a Wet/Dry control, which determines how much of the signal
will pass through the FX preset. Below that is a Tempo control, which sets the timing of the
delays. These parameters are called "bus overrides," because they override parameters which
are actually inside the FX preset itself—these parameters can be adjusted from inside the
FX preset, or they can be set from out here, where they are much more convenient. If you change
FX presets, these values change, because their values inside the various FX presets are all
different. There will be more about bus overrides a little later in this chapter.
Allocation
The Allocation parameter determines how many processor allocation units (PAUs) are reserved
for this FXBus. The number of PAUs an FX preset uses is dependent on the algorithm at the core
of the FX preset. Algorithms can use anywhere from 1 to 4 PAUs, depending on their
complexity. As you scroll through the FX presets, the number of PAUs required by each one is
shown on the top line of the display (Size:), along with the number of PAUs that are available
(Free:) for other algorithms.
The 4 insert FXBuses have 4 PAUs to share among them, so if any bus uses more than one PAU,
it means that some buses cannot be assigned an FX preset. This is a very common situation, as
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