Complex Echo; Equalizers (Eq) - Kurzweil K2600 Musician's Manual

Advanced KDFX
Using the Algorithms
DelayScale lets you change the lengths of all the taps together. Its range is 0 to 10x.
Note that it is possible for KDFX to run out of delay memory with over-generous settings of DelayScale
or very slow Tempos. If this happens, delay times will be automatically cut in half.

Complex Echo

This algorithm has two feedback taps per channel as well as three independent taps, and also a
feedback diffuser for ÒsmearingÓ the delays. Feedback line 1 feeds the signal back to the delay
input of the same channel, while feedback line 2 feeds the signal back to the opposite channel.
FB2/FB1>FB is a balance control between feedback lines 1 and 2. 0% (minimum) turns off
feedback line 2, only allowing use of feedback line 1. 50% is an even mix of both lines, and 100%
(maximum) turns off line 1.
L Diff Dly and R Diff Dly adjusts the delay lengths of the diffusers. Range is 0 to 100 ms.
Diff Amt adjusts the diffuser intensity. Range is 0 to 100%.
N Fdbkn Dly adjusts the delay length of the N channelÕs nth feedback tap, fed back to the
N channelÕs delay input. Range is 0 to 2600 ms.
Spectral Multitap Delays
These 4- and 6-tap delays have their feedback and output taps modiÞed with shapers and Þlters.
In the feedback path of each tap are a diffuser, hipass Þlter, lopass Þlter, and imager. Each delay
tap has a shaper, comb Þlter, and balance and level controls.
Fdbk Image sets the amount the stereo image is shifted each time it passes through the feedback
line. Range is -100 to 100%.
Tap n Shapr adjusts the intensity of the shaper at each output tap. Range is 0.10 to 6.00 x.
Tap n Pitch adjusts the frequency of the comb Þlter at each output tap. Range is C -1 to C 8, in
semitones.
Tap n PtAmt adjusts the intensity of the comb Þlter at each output tap. Range is 0 to 100%.

Equalizers (EQ)

KDFX has both Graphic and Parametric EQ algorithms. Parametric EQ sections are also
available on a number of combination algorithms.
The Graphic equalizer is available as stereo (linked parameters for left and right) or dual mono
(independent controls for left and right). It has 10 bandpass Þlters per channel, each of whose
gain is adjustable from -12 dB to +24 dB.
Like all graphic equalizers, the Þlter response is not perfectly ßat when all gains are set to the
same level (except at 0 dB), but rather has ripple from band to band. To minimize this ripple, it is
best to center the overall settings around 0 dB.
The Parametric equalizer (5-Band EQ) has two bands of shelving Þlters and three bands of true
parametric EQ.
Treb Freq and Bass Freq set the center frequencies for the shelving Þlters. Both of these are
adjustable over the full range of 16 to 25088 Hz, in increments of a semitone.
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