Kurzweil KDFX V2 - MUSICIANS REFERENCE REV B Service manual

K DFX V2
M usician’sReference
© Young Chang Co., Ltd. 2002.All rights reserved. Permission is granted to reprint up to two copies of this manual for personal use.
Kurzweil ® is a product line ofYoung Chang Co., Ltd. Young Chang®, Kurzweil ® , V.A. S. T. ®, KDFX®, Pitcher®, and LaserVerb®, KSP8 ™,
K2600™, K2500™, and K2000™ are trademarks of Young Chang Co., Ltd. SmartMedia™ is a trademark of Toshiba Corporation. ADAT® is a
registered trademark of Alesis Corporation. All other products and brand names are trademarks or registered trademarks of their respective
companies. Product features and specifications are subject to change without notice.
Part Number: 910379, Rev. B

ii
Young Chang International Contacts
Contact the nearest Young Chang office listed below to locate your local Young Chang/ Kurzweil representative.
Young Chang America, Inc.
P.O. Box 99995
Lakewood, WA 98499-0995
Tel: [phone]
Fax: [phone]
Young Chang Co., Ltd.
178-55 Gajwa-Dong
Seo-Ku, Inchon, Korea 404-714
Tel: [phone]
Fax: [phone]
Young Chang America, Inc. (Canadian Division)
3650 Victoria Park Ave. Suite 105
Toronto, Ontario Canada M2H 3P7
Tel: [phone]
Fax: [phone]
World WideWeb Home Page
http://www.kurzweilmusicsystems.com

Table of Contents-1
Table of Contents
Young Chang International Contacts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii
Introducing KDFX Version 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Additions and Changes to Effects Mode Pages . . . . . . . . . . . . . . . . . . . . . . 1-2
New Button Presses for Bypassing/Enabling Effects . . . . . . . . . . . . . . . . . 1-2
MAIN Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Soft Buttons in Effects Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Soft Buttons: Configuring Bypasses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Effects Bus Editor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Effects Send Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
The CTRL Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Effects Control Mode (FXCtrl) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Effects Control in Embedded Editors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Bypass and Mute pages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
Creating a Custom Bypass Scene . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
The EQBYP Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
The FX Bypass Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
The Bus Mute Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
Chaining Effects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11
Gain Staging in Effects Chains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12
Checking Out Some Chains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12
KDFX V2 Objects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13
New FX Algorithms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13
Additional FX Algorithms new to K2500 . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13
New FX Studios . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13
Additional FX Studios new to K2500 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14
New FX Presets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15
Additional FX Presets new to K2500 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16
A Tour of KDFX V2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Load the Tutorial files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
A Simple Studio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
The FXBus Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
The INPUT Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
The FXSEND Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
The AUXFX Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
The OUTPUT Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
A More Complex Studio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
FXBus1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
FXBus2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

Table of Contents-2
AuxFX Bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
Chaining Effects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
A Complex Studio with Real-Time Control . . . . . . . . . . . . . . . . . . . . . . . . 2-13
Setting the FXCTRL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
The Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
Looking at the Studio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
Setting Up FXMods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15
A Note About Effects in Setups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19
Building Your Own . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20
Algorithm Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Degen Regen BPM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Switch Loops. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Moving Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
Allpass Phaser 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
VC+Dist+1Rotor 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
VC+Dist+HiLoRotr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
VC+Tube+Rotor 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
Rotor 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
VC+Dist+HiLoRot2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
Subtle Distort . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-22
Quantize+Alias . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-23
Pitcher+MiniVerb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-26
Reverb+Compress. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-29
St Chorus+Delay. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-32
St Flange+Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-32
Gate+Cmp[EQ]+Vrb. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-33
Gate+TubeAmp. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-37
Revrse LaserVerb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-40
Gated LaserVerb. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-43
Poly Pitcher. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-46
Frequency Offset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-48
MutualFreqOffset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-48
WackedPitchLFO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-52
Chaos! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-54
Band Compress. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-57
CompressDualTime . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-61
3 Band EQ. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-65
HF Stimulate 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-66
HarmonicSuppress . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-67

Chapter 1
Introducing KDFX Version 2
Overview
KDFX V2 gives you more control than ever over the effects in each studio, through several
enhancements:
• You can assemble chains of up to four FX Presets on an FXBus.
• You have access to 26 new KDFX algorithms (29 for K2500).
• You can mute or bypass effects and EQ for individual FXBuses. You can now keep effects
bypassed outside the program editor, as well.
• You can get to Effects Mode directly from Program, Setup, and Song modes—you don’t
have to go through another editor first.
If you are familiar with Version 1 of KDFX, you will notice that there are several new pages and
parameters giving you access to the new features. You’ll also notice some changes to existing
pages. The INPUT, AUXFX, and OUTPUT pages have not changed at all with KDFX V2,
however.
The following tables give a brief explanation of the major additions and changes in KDFX V2.
Page Description What’s Different
KDFXMode:MAIN Displays studio assignment.Also, for each insert FXBus, displays FX Preset assignment,
bypass/mute, and PAU assignment.
Was EffectsMode page;controlled studio
assignment, FX Mode and FX Chan, and
dither (noise-floor adjustment).
EditStudio:FXBUS New soft buttons for adding/deleting FX Presets on current FXBus; new soft button
for bringing up the new FXSEND page.
PAU assignment is handled for each FXBus
individually; Level and Balance for each
FXBus are part of new FXSend page;New
feature:you can chain multiple Presets
together on an insert bus using the Add and
Remove buttons.
EditStudio:FXSEND Directs the send of each Insert FXBus to either the default stereo Mix bus or the AuxFX bus,
with balance control for each.
Relocates Lvl and Bal parameters from the
FXBus page.
KDFXMode:CTRL Controls FXCtrl (formerly FX Mode) and
FX Chan, as well as dither. Replaces functionality of EffectsMode page, which no longer exists.
KDFXMode:EQBYP Controls EQ mute/bypass for each Insert
FXBus. New feature.
KDFXMode:FXBYP Controls independent active/bypassed status
for each Insert FXBus and the AuxFX bus. New feature.
KDFXMode:BUSMUT Controls independent active/muted status for
each Insert FXBus and the AuxFX bus. New feature.

1-2
Introducing KDFXVersion 2
Additions and Changes to Effects Mode Pages
Additions and Changes to Effects Mode Pages
Prior to V2, there was a single Effects Mode page, which was responsible primarily for setting
the FX Mode and FX Chan parameters. This pair of parameters affected how the K2600/K2500
selected studios when you changed programs, setups, or songs. You would get to the
EffectsMode page by pressing the Effects button while in a performance mode (not while in an
editor). While inside an editor, the Effects button was used to globally bypass or enable the
effects.
There’s much more going on with V2, so we’ve added several pages, and moved a number of
parameters into more logical groupings. Pressing the Effects button now takes you to the
KDFXMode:MAIN page, which gives you easy access to the Effects Mode pages.
The Studio Editor has some new soft buttons and pages to accommodate effect chaining in
KDFX V2. The Add and Remove buttons on the FXBUS page let you create and modify chains
on the buses. The FX Send and Aux Send fields and graphics that were previously shown on the
FXBUS page are now found on their own new page, FXSEND. Pressing the right more > button
on the FXBUS page reveals the FXSEND soft button, as well as the familiar AUXFX and
OUTPUT buttons.
New Button Presses for Bypassing/Enabling Effects
As a result of the new flexibility we’ve added, bypassing or enabling effects now takes an extra
button press or two, because you have to press Effects , then BypAll or Enable . Also, you may
need to press Exit or Effects again, depending on whether you're just toggling the effects on and
off, or whether you are leaving the effects bypassed and returning to an editor. See page 1-4 for
information on the new bypass features.

Introducing KDFXVersion 2
MAIN Page
1-3
MAIN Page
The KDFXMode:MAIN page gives you a summary view of the current effects configuration,
including the current studio, the FX Presets assigned to each of the five effects buses, and the
bypass status of each bus.
KDFXMode:MAIN||||FXCtrl:Auto||||<>Enable
Studio: 113|PltEnvFI4T|Plate| ||||||Free:0
FX1|||43|Plebe|Chamber||||||||-|||Size:1
FX2|||902|Synth|En |Filter||||B|||Size:2
FX3|||735|Bap|ba_da_dap|||||||-|||Size:1
FX4|||0|None||||||||||||||||||B|||Size:0
Aux|| | 103|Bi g Predel a yPlate | |||B|| | Size:3
MAIN| | CT L|| | EQBYP| | FXBYP| | BUSMUT | Enable |
Figure 1-1 Effects mode: the KDFXMode:MAIN page
As with every other page, the top line of the KDFXMode:MAIN page identifies the page you’re
on. It also shows you two other important features of Effects mode:
FXCtrl: Effects-control status. Prior to V2, this was called FX Mode. The functionality
hasn’t changed, but we renamed it because it’s now a parameter on the Ctrl page,
which is accessible with the CTRL soft button.
Enable state: Shows whether KDFX is currently enabled or if any part of KDFX is bypassed or
muted.
The second line of the display shows the ID and name of the current studio. When you enter
KDFX Mode directly (i.e., not through another one of the K2500/K2600’s editors) you can scroll
through the displayed list of studios. This allows you to choose a different studio on the
KDFXMode:MAIN page. When FXCTRL is set to Master (see page 1-7), you can also do this,
even when you have entered KDFX Mode from within another editor.
If you select the studio then press the Edit button, you’ll go to EditStudio:FXBUS page, where
you can make changes to each bus within the studio.
The second line also shows the number of PAUs available for the current studio (“Free:” on the
right-hand side). This number will be 0–4, since in each studio four PAUs are available for the
four insert FXBuses (the AuxFX bus has its own fixed set of three PAUs).
The next five lines show the IDs and names of the FX Presets assigned to the five effects buses
(insert FXBuses 1–4 and the AuxFX bus). You can’t change these assignments on the
KDFXMode:MAIN page; to do that you would highlight the Studio name (line two of this page)
then press Edit . This takes you to the Studio Editor, on the appropriate FXBUS page for the first
bus. As in KDFX V1, use the Chan/Bank buttons to move between buses.
Each of these five lines also indicates the bypass status for the five buses, as well as the number
of PAUs used by each FXBus. A dash (
-
) indicates active/enabled, and
B
indicates
bypassed/disabled. You can change the bypass status for a bus by moving the cursor to this
field and changing it with either the alpha wheel or pressing one of the increment/decrement
buttons.
The size of each FX Preset is measured in PAUs (processor allocation units). FXBuses 1–4 can all
use up to four PAUs, but the studio can use a maximum of four total PAUs. The AuxFX bus can
use up to three PAUs independent of the insert FXBuses.

1-4
Introducing KDFXVersion 2
MAIN Page
Soft Buttons in Effects Mode
The MAIN button takes you to the KDFXMode:MAIN page, where you can view the current
studio and the FX Presets assigned to the five KDFX buses.
The CTRL button takes you to the KDFXMode:CTRL page, which contains parameters that
determine which studio gets selected when you select a program, setup, or song. You also use
the KDFXMode:CTRL page to change dither and digital word size settings.
Soft Buttons: Configuring Bypasses
You can individually bypass any of the EQ and effects inputs, and also mute any of the FXBuses
(the four insert FXBuses and theAuxFX bus). In the enabled state, nothing is muted or bypassed.
The K2600/K2500 always starts up in the enabled state.
Use these soft buttons to perform bypasses and muting:
EQBYP Displays EQ Bypass page, where you can bypass the EQ on each individual
input bus.
FXBYP Displays FX Bypass page, where you can bypass the effects on individual
FXBuses.
BUSMUT Displays the BusMute page, where you can mute the output of individual
FXBuses.
BypAll/Enable Toggles between enabled state and default bypass state (all buses bypassed,
none muted). If you have created a custom bypass scene, BypAll resets it to
the default bypass state. See page 1-8 for information on creating a custom
bypass scene.
You may also use either of the Chan/Bank buttons to toggle between enabled
and bypassed states. This will often be preferable, since Chan/Bank, unlike
BypAll, does not reset the bypass state to the default (all buses bypassed,
none muted). Instead, Chan/Bank toggles between the enabled state and any
custom bypass scene you may have created, allowing you to audition a studio
with and without bypasses.

Introducing KDFXVersion 2
Effects Bus Editor
1-5
Effects Bus Editor
The revised FXBus Editor lets you create effects Preset chains on any of the four stereo effects
buses. See page 1-11 for more information about chaining effects.
EditStudio:FXBUS|Size:3|Free:0|<>FXBus:1
|||||qWWWWT|||||||||||||||||||||||||||||
FX1|!k vrb©!!!!!!!!!!!!!!!!!!!!!!!!!!!h|
|||||CVVVVB|||||||||||||||||||||||||||||
FX:|1|NiceLittleBooth|||||||||||||||||||
Wet/Dry|||:42%wet|||||||||||||||||||||||
Out|Gain||:0.0dB|||||||||||Alloc:Auto|||
<more||INPUT||FXBUS|||Add||emove||more>
Figure 1-2 Effects Bus Editor display -- single effect
EditStudio:FXBUS|Size:1|Free:0|<>FXBus:1
|||||qWWWWT|||qwwwwt|||qwwwwt|||qwwwwt||
FX1|!k vrb©!!!kChorg!!!kDly|g!!!kFlngg!h
|||||CVVVVB|||CVVVVB|||CVVVVB|||CVVVVB||
FX:|1|NiceLittleBooth|||||||||||||||||||
Wet/Dry|||:42%wet|||||||||||||||||||||||
Out|Gain||:0.0dB|||||||||||Alloc:Auto|||
<more||INPUT||FXBUS|||Add||emove||more>
Figure 1-3 Effects Bus Editor display -- four chained effects
The Add and Remove buttons allow you to define your own chains of effects using up to four
FX Presets. The Add button creates an effects block (shown as a box) to the right of the current
cursor position in the effects chain. You can use a total of four effects in any studio, so if you
create a four-block effects chain on a bus then you won’t be able to use any effects on the other
buses in that studio. Your K2500/K2600 keeps track of effects usage for you, and won’t let you
add an effects block to a bus if you’re already max’ed out.
The Remove button deletes the effects block that the FXBUS editor cursor is on. Adding and
deleting effects blocks may cause audio glitches in any signal path and should not be done
during critical listening.
Each FX Preset in an effect chain has two “override” parameters (BusMods) that are displayed
when that FX block is selected. By selecting the name of an override parameter (e.g., Wet/Dry),
you can scroll to choose from any other available parameter.
Each effect also has its full complement of real time modulators as defined and displayed in the
Program and Setup editors.

1-6
Introducing KDFXVersion 2
Effects Send Page
Effects Send Page
The FXSEND page lets you send the output of each stereo effects bus to the stereo mixdown and
auxiliary buses.
In KDFX V1, these sends were on the EditStudio:FXBUS page.
EditStudio:FXSEND|||||||||||||<>FXBus:1|
|||||!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!h
||||||0wwwwt||||||||||0wwwwt|||||||||
||||||KAux|1||||||||||KMix|1|||||||||
||||||CVVVVB||||||||||CVVVVB|||||||||
|||||||Aux|L l:0.0dB|||Mix|L l:0.0dB||||
|||||||Aux|Pan:0%||||||Mix|Pan:0%|||||||
||||||||||||||||||||||||||||||||||||||||
<more||FXSEND|AUXFX|OUTPUT|||||||||more>
Figure 1-4 Effects Bus Send display

Introducing KDFXVersion 2
The CTRL Page
1-7
The CTRL Page
The CTRL page is where you set a variety of important parameters for KDFX, including the
Effects Control Mode (FXCtrl) for the current studio; this parameter was known as FX Mode in
KDFX V1, and its function is the same in KDFX V2.
As in KDFX V1, the CTRL page is also where you set the FX Channel and set the Dither level for
the current studio. Depending on the options you have installed, this is also where you’ll be able
to change word length for digital output.
KDFXMode:CT L||||FXCtrl:Auto||||<>Enable
Studio:49|Sndboard| oom|Hall||||||||||||
FXCtrl:Auto|||||||||||||||||||||||||||||
FXChan:Current||||||||||||||||||||||||||
||||||||||||||||||||||||||||||||||||||||
||||||||||||||||||||||||||||||||||||||||
Dither:Medium|||||||||||||||||||||||||||
MAIN||CT L|||EQBYP||FXBYP||BUSMUT|Enable
Figure 1-5 Effects Control page
Effects Control Mode (FXCtrl)
FXCtrl determines how the K2500/K2600 selects studios as you change programs or setups, and
determines whether you have real-time control over studio parameters—in other words,
whether FXMods are active.
If the value of FXCtrl is Program or Auto, then as you change programs in Program mode, the
K2500/K2600 also loads the studio linked with that program. This activates all the FXMods
defined within the program. If the value of FXCtrl is Setup or Auto, then as you change setups
in Setup mode, the K2500/K2600 also loads the studio linked with that setup. This activates all
the FXMods defined within the setup. If the value of FXCtrl is Auto, and the value of FX Chan is
Current, then when you’re in Program, Setup, Quick Access, or Song mode, programs, setups
and songs automatically use their corresponding studios. In Program, Setup, and Quick Access
modes, the studio corresponds to the current program or setup. In Song mode, the studio
corresponds to the program on the song’s assigned effects channel (which is determined by the
value of the EffectChan parameter on the COMMON page in the Song Editor).
If the value of FXCtrl is Master, changing programs or setups does not load an associated studio;
the current studio is defined by the Studio parameter on the Effects Mode page. Any FXMods
defined in the current program or setup are inactive.
Effects Control in Embedded Editors
In the parlance of V.A.S.T., an embedded editor is an editor that you enter while you are already
in another editor. An example of this would be entering the KDFX Studio Editor while you are
already in the Program Editor. In this sort of situation, an editor may function differently than if
you had entered it directly from a performance mode.
When you enter the KDFX Studio Editor from within another editor (for example, you are
already in the Program Editor when you press the Effects button), KDFX will revert FXCtrl to
Auto and FXChan to Current if you attempt to perform an operation that the software doesn’t
support. For example, you cannot change a program’s assigned studio by pressing the Effects
button to enter the KDFX Editor while you are already within the Program Editor. If you set
FXCtrl to Master you will be able to audition different studios, but the software will not let you
change a studio. The correct way to change the studio used by a program is to press the KDFX
soft button from within the Program Editor.

1-8
Introducing KDFXVersion 2
Bypass and Mute pages
Bypass and Mute pages
In KDFX V1, you could perform a global bypass by pressing the Effects button while inside an
editor. You could not bypass effects outside of an editor.
With KDFX V2, you can bypass effects buses, inside or outside of an editor, by pressing the
Effects button followed by either the BypAll soft button or one of the Chan/Bank buttons.
Although similar, the two methods are slightly different:
• The BypAll soft button globally bypasses all effects buses, and also resets the default bypass
state to bypass all buses. When you press this soft button it changes into the Enable soft
button, allowing you to toggle between the state where all buses are bypassed and the state
where all are enabled.
• Either Chan/Bank button toggles between the enabled state and the current bypass state.
The current bypass state is either the default (all buses bypassed) or the custom bypass
scene you have created. See the section that follows for information about creating a bypass
scene.
Pressing the Effects button again, or pressing Exit, puts you back where you were.
Creating a Custom Bypass Scene
You create a custom bypass “scene” (e.g., effects bypassed on one bus, but not on the other
three) by using the soft buttons on the EQBYP, FXBYP, and BUSMUT pages to isolate sounds or
effects. You can then toggle between an all-enabled state and your custom scene by pressing
either of the Chan/Bank buttons (to the left of the display) while in KDFX Mode.
The system indicates whether anything at all is bypassed or muted by showing “Bypass” at the
far right of the top line on the display; if nothing is bypassed, this field shows “Enable.” Any
settings from the FXBYP page are also indicated on the KDFXMode:MAIN page as either a “B”
(bypassed) or a “-” (enabled). EQ Bypass and Bus Mute settings, however, are not indicated on
the KDFXMode:MAIN page. If you exit this mode with anything bypassed, the Effects button's
red LED stays lit to remind you that something is not active.

Introducing KDFXVersion 2
Bypass and Mute pages
1-9
The EQBYP Page
KDFXMode:EQBYP|||FXCtrl:Auto||||<>Enable
Studio:113|PltEnvFI4T|Plate|||||||||||||
||||||||||||||||||||||||||||||||||||||||
EQ|A|||LoShelf-HiShelf||||||||||||||:In|
EQ|B|||LoShelf-HiShelf||||||||||||||:Out
EQ|C|||Lopass1-HiShelf||||||||||||||:In|
E |D|||Hipass1-Lopass1||||||||||||||:In|
MAIN||EQ|A|||EQ|B|||EQ|C|||EQ|D|||||||||
Figure 1-6 EQ Bypass Page
The MAIN soft button takes you to the KDFXMode:MAIN page. The soft buttons EQ A, EQ B,
EQ C, and EQ D toggle the bypass/active status for the EQ on the corresponding input buses.
The EQBYP page looks a little different when there are mono inputs to the studio. In this case,
press the L/R soft button to toggle between left and right mono inputs for a bus.
KDFXMode:EQBYP|||FXCtrl:Auto||||<>Enable
Studio:113*PltEnvFI4T|Plate|||||||||||||
||||||||||||||||||||||||||||||||||||||||
EQ|A/L|LoShelf-HiShelf||||||||||||||:In|
EQ|B|||LoShelf-HiShelf||||||||||||||:Out
EQ|C|||Lopass1-HiShelf||||||||||||||:In|
E |D|||Hipass1-Lopass1||||||||||||||:In|
MAIN||EQ|A/L|EQ|B|||EQ|C|||EQ|D|||L/ ||||
Figure 1-7 EQ Bypass Page with Mono Inputs
The FX Bypass Page
KDFXMode:FXBYP|||FXCtrl:Auto||||<>Enable
Studio:113|PltEnvFI4T|Plate|||||||||||||
FX1|||43|Plebe|Chamber||||||||||:Acti e
FX2|||158|Soft|Chorus|||||||||||:ByPass
FX3|||2|Stereo|Echoes|||||||||||:Acti e
||||||||||||||||||||||||||||||||||||||||
Aux|||31|Platey|Room||||||||||||:Active|
MAIN||FXBus1|FXBus2|FXBus3||||||||AuxFX|
Figure 1-8 FX Bypass Page
The MAIN soft button takes you to the MAIN page. The FX1–FX4 and AuxFX soft buttons
toggle Bypass/Active status for the effect on the corresponding bus.

1-10
Introducing KDFXVersion 2
Bypass and Mute pages
The Bus Mute Page
KDFXMode:BUSMUT||FXCtrl:Auto||||<>Enable
Studio:113|PltEnvFI4T|Plate|||||||||||||
FXBus1||43|Plebe|Chamber|||||||||:Acti e
FXBus2|158|Soft|Chorus|||||||||||:Muted|
FXBus3|||2|Stereo|Echoes|||||||||:Muted|
FXBus4|||---|||||||||||||||||||||:Acti e
AuxFX|||31|Platey|Room|||||||||||:Active
MAIN||FXBus1|FXBus2|FXBus3|FXBus4|AuxFX|
Figure 1-9 Bus Mute Page
The MAIN soft button takes you to the KDFXMode:MAIN page. The soft buttons
FXBus1–FXBus4 and AuxFX toggle the mute/active status for the corresponding input buses.

Introducing KDFXVersion 2
Chaining Effects
1-11
Chaining Effects
One of the most powerful new features in KDFX V2 is effects chaining, which allows you to
send a signal through four consecutive KDFX effects. The screen below shows an example of
this:
EditStudio:FXBUS|Size:1|Free:0|<>FXBus:1
|||||qWWWWT|||qwwwwt|||qwwwwt|||qwwwwt||
FX1|!k vrb©!!!kChorg!!!kDly|g!!!kFlngg!h
|||||CVVVVB|||CVVVVB|||CVVVVB|||CVVVVB||
FX:|1|NiceLittleBooth|||||||||||||||||||
Wet/Dry|||:42%wet|||||||||||||||||||||||
Out|Gain||:0.0dB|||||||||||Alloc:Auto|||
<more||INPUT||FXBUS|||Add||emove||more>
Figure 1-10 Effects Bus Editor display -- four chained effects
Effects chaining allows the 4 PAUs of processing shared among Buses 1-4 of a Studio to be used
in series. You can chain one FX Preset into another, into another, up to four in a row, until you
run out of PAUs. This is done by removing processing “blocks” from one bus, and adding them
to another. As no effect is less than 1 PAU, and only 4 PAUs are available across Buses 1-4, any
Studio may have a maximum of 4 blocks, arranged however you please, in which to select
Presets (not counting the Aux bus which is unaffected by chaining).
The FXBUS page has changed in KDFX V2 to allow for effect chaining. The chained effects are
shown at the top of the display (underneath the top menu line). As an example, start from
Program Mode, press the Effects button, then select Studio 700 Flanger Trio:
KDFXMode:MAIN||||FXCtrl:Auto||||<>Enable
Studio:700|Flanger|Trio|||||||||||Free:0
FX1a||180|Ned|Flangers||||||||-|||Size:1
||1b||172|Sweet|Flange||||||||-|||Size:1
||1c||181|Wispy|Flange||||||||-|||Size:1
||1d||40|SmallDrumChamber|||||-|||Size:1
Aux|||108|Roomitizer||||||||||-|||Size:2
MAIN||CT L|||EQBYP||FXBYP||BUSMUT|Enable|
You can see that this studio has three flange effects, followed by a reverb. The effects are
numbered 1a through 1d to indicate that they are all part of FXBUS 1, instead of four separate
effects buses. Now press Edit to go into the Studio Editor. The top of the display shows the four
effects chained together. Each block contains an abbreviation based on the algorithm used by the
Preset:
EditStudio:FXBUS|Size:1|Free:0|<>FXBus:1
|||||qWWWWT|||qwwwwt|||qwwwwt|||qwwwwt||
FX1|!kFlng©!!!kFlngg!!!kFlngg!!!kR rbg!h
|||||CVVVVB|||CVVVVB|||CVVVVB|||CVVVVB||
FX:|180|Ned|Flangers||||||||||||||||||||
Wet/Dry|||:42%wet|||||||||||||||||||||||
Out|Gain||:0.0dB|||||||||||Alloc:Auto|||
<more||INPUT||FXBUS|||Add||emove||more>
The name of the FX Preset for the currently highlighted block is now shown underneath the
signal path graphics. In this example, you will see the FX Preset Ned Flangers if the first block is
highlighted. You still have 2 Bus Overrides (or Bus Mods) per block, which appear just below
the name of the Preset.

1-12
Introducing KDFXVersion 2
Chaining Effects
Use the left and right cursor buttons to select each block. When a block is selected, move the
alpha wheel or press the + or - buttons to select a different FX Preset (you can also change the
Preset by cursoring to the full name of the Preset after the FX: label).
Notice that the unhighlighted blocks have a box around them. This shows they are active. Since
this studio has 4 blocks, each block can use only 1 PAU. If you select an effect that uses more
than one PAU, one of the blocks will become inactive and the box surrounding that block will
disappear. For example, if you change the first block to FX Preset 183 NarrowResFlange, the box
around block 4 disappears. The top line of the display shows you this FX Preset uses 2 PAUs. As
in the past, if the Allocation parameter is set to Auto, the lower number blocks have precedence,
so block 4 is the one that becomes inactive. If you highlight block 4 at this point, you will see the
FX Preset shown in parenthesis, again showing it is not active.
The Chan/Bank buttons still move you through the four FXBUSes as in KDFX V1. Since no
effects are available in this case, you will see a line with no blocks on them if you look at any bus
except FXBUS 1. You can still use a bus to send another signal to the AUX without the chain, by
the way, since KDFX has been designed to offer you maximum flexibility.
Gain Staging in Effects Chains
When chaining Presets together, it is sometimes necessary to adjust the levels between blocks,
most often to pad the level going into the next block to prevent unwanted clipping. While most
algorithms have both an In Gain and an Out Gain parameter, In Gain is not selectable as a Bus
Mod. In fact, any Preset beyond the first in a chain cannot use In Gain, and will display the value
inside the Preset in parentheses. We suggest, when necessary, choosing Out Gain as a Bus Mod
to adjust the output level of an effect, instead of trying to pad the input of the following effect.
Of course, you can always edit FX Presets directly and customize them for your chain.
Checking Out Some Chains
For examples of studios with chains, check out studios 700-719. By setting the FX Ctrl parameter
(KDFXMode:CTRL page) to Master, and the OutPair parameter (MIDIMode:Channels page) to
KDFX-A, you can scroll through Programs on a given MIDI channel and audition these studios
as they were intended to be heard, with a variety of input source material.

Introducing KDFXVersion 2
KDFX V2 Objects
1-13
KDFXV2 Objects
Listed below are the new KDFX Objects added with version 5.xx (K2500) or 3.xx (K2600) of the
Base Objects file. These include new FX Algorithms, Presets, and Studios added to the
K2500/K2600 with the new object files. Objects marked “Additional XX new to K2500” were
previously available in the K2600 but not in the K2500.
New FX Algorithms
Additional FX Algorithms new to K2500
New FX Studios
138 Degen Regen BPM 792 Gate+TubeAmp
139 Switch Loops 914 Reverse LaserVrb
140 Moving Delay 915 Gated LaserVerb
161 Allpass Phaser 3 916 Poly Pitcher
741 Rotor 1 917 Frequency Offset
742 VC+Dist+HiLoRot2 918 MutualFreqOffset
743 Subtle Distort 919 WackedPitchLFO
744 Quantize+Alias 920 Chaos!
745 Pitcher+Miniverb 948 Band Compress
746 Reverb+Compress 949 CompressDualTime
781 St Chorus+Delay 971 3 Band EQ
784 St Flange+Delay 972 HF Stimulate 1
790 Gate+Cmp[EQ]+Vrb 975 HarmonicSuppress
738 VC+Dist+1Rotor 2
739 VC+Dist+HiLoRotr
740 VC+Tube+Rotor 4
700 Flanger Trio 710 Blues/R&R Guitar
701 Thin Cloud Layer 711 Clean Rhythm Gtr
702 Fazetortion 712 Sweeping Verb
703 Ultraphasulate 713 Pad Ambience
704 Chutney Squishy 714 Coming of Dawn
705 BuddMeetsTomita 715 Wide Raindrops
706 2 Buses 2 Chains 716 Robot Voice
707 RingMod Envelope 717 Before The Crash
708 Drum Megashaper 718 Piano Multi-Verb
709 Dist Lead Guitar 719 Mastering Studio

1-14
Introducing KDFXVersion 2
KDFX V2 Objects
Additional FX Studios new to K2500
167 auxChorEnvF Hall 182 auxFlgChDl Hall
168 auxChRvEncr Chor 183 auxDstLsr CDR
169 auxChrDstEQ Room 184 CPDlEnFltCmpGtRv
170 aux ChDlSRS Hall 185 RotoOrgFX2 Hall
171 aux EQFlng DstEQ 186 ChDlFlPtLzVb Plt
172 auxFlngPhsr Lasr 188 CDR FlgRvb Hall
173 auxFlShQFlg Hall 190 DistRoom GrphEQ
174 auxFlgDist+ Room 191 Enh Ch 4T Hall
175 aux GtVbFl4T Bth 192 FiltCmpExpFl CDR
176 auxRvRvQFlg Hall 193 LzVbFlDstEQ Room
177 auxRvRbShapeChmb 194 PhseDist Room
178 auxSpinMDly Room 195 ChDlyRvFlRv Hall
179 aux SweepEchoBth 196 RmRotr&DstChrPlt
180 auxRoto&DsFDRPlt 197 Clear Studio
181 auxRot&Ds2FDRPlt

Introducing KDFXVersion 2
KDFX V2 Objects
1-15
New FX Presets
104 Cool Dark Place 793 Very Nazty Rotor
105 Gunshot Verb 794 80's Funk Guitar
106 Rvrb Compression 795 Mean 70'sFunkGtr
107 Snappy Drum Room 796 Crunch Guitar
108 Roomitizer 797 Classic Gtr Dist
109 Live To Tape 798 SaturatedGtrDist
123 Rvrs Laserverb 799 TubeDist DlyChor
124 Growler 928 Gated Laserverb
125 Ringy Drum Plate 929 Waterford
126 Oil Tank 930 A little dirty
127 Wobbly Plate 931 Slight Overload
128 Pitcher Hall 932 Blown Speaker
129 DistantPitchRoom 933 Ring Linger
139 Fanfare In Gmaj 934 Drum Shaper
140 Basic Delay 1/8 935 Aliaser
141 Diffuse Slaps 936 Quantize+Alias1
142 Multitaps ms 937 Quantize+Alias2
143 Timbre Taps 938 Drum Mortar
144 Ecko Plecks 939 Superphasulate
145 Degenerator 940 Rich Noodle
146 Nanobot Feedback 941 Nickel Chorus
147 Takes a while... 942 HF Stimulator
148 Wait for UFO 943 OddHarmSuppress
149 News Update 944 AM Radio
162 Full Chorus 945 U-Shaped EQ
163 Dense Gtr Chorus 946 Drum Crusher
164 Standrd Gtr Chor 947Vocal Room
165 Bass Chorus 948Vocal Stage
166 StChorus+Delay 949 Mid Compressor
167 StChor+3vs2Delay 981 Poly Pitcher
168 CDR for Lead Gtr 982 CheapVoxChanger
169 PinchChorusDelay 983 Hip Hop Aura
179 Soft Edge Flange 984 Woodenize
180 Ned Flangers 985 Marimbafication
181 Wispy Flange 986 Frequency Offset
182 Crystal Flange 987 Drum Loosener
183 NarrowResFlange 988 Drum Tightener
184 TightSlapFlange 989 Vox Honker
185 Flanged Taps 990 Glacial Canyon
186 StFlange+Delay 991 Spring Thing
187 StFlng+3vs2Delay 992 Contact
188 Singing Flanger 993 Drum Frightener
189 DampedEchoFlange 994 Mad Hatter
197 Slippery Slope 995 Fallout
198 Westward Waves 996 Ascension
791 Slow Res Rotor 997 60Hz Buzz Kill
792 Smooth Rotors

1-16
Introducing KDFXVersion 2
KDFX V2 Objects
Additional FX Presets new to K2500
11 Viewing Booth 817 Non-Linear 846 Flange Echo
122 Reverse Reverb 2 818 Slapverb 847 Rotary Club
196 Static Phaser 819 Full Bass 848 Rotary Hall
782 VibrChrDstRotor1 820 Room + Delay 849 Chorus
783 VibrChrDstRotor2 821 Delay Big Hall 850 Soundbrd/rvb
784 VibChrDstRotor3 822 Chorus Room 851 Percussive Room
785 FullVbChTubeRotr 823 Chorus Smallhall 852 Brt Empty Room
786 ChorDlyHall 2 824 Chorus Med Hall 853 Mosque Room
787 Flange Hall 2 825 Chorus Big Hall 854 New Gated
788 SpeeChorusDeep 826 Chor-Delay Room 855 Chorus Slap Room
789 Fluid Wash 827 Chor-Delay Hall 856 Chorus Bass Room
790 VC+DistRotor 828 Flange-Dly Room 857 New Chorus Hall
800 Sweet Hall 829 Flange-Dly Hall 858 Spacious
801 Small Hall 830 Stereo Chorus 859 Wash Lead
802 Medium Hall 831 Stereo Flanger 860 New Hall w/Delay
803 Large Hall 832 Stereo Delay 861 Rich Delay
804 Big Gym 833 4-Tap Delay 862 Glass Delay
805 Bright Plate 1 834 Chorus Delay 863 Real Plate
806 Opera House 835 Flange Delay 864 Real Niceverb
807 Live Chamber 836 Chorus 4-Tap 865 ClassicalChamber
808 Bathroom 837 Flange 4Tap 866 Empty Stage
809 Med Large Room 838 Chorus Echo 867 Long & Narrow
810 Real Room 839 Chorus Echoverb 868 Far Bloom
811 Drum Room 840 Fast Flange 869 Floyd Hall
812 Small Dark Room 841 Wash 870 With A Mic
813 Small Closet 842 Into The Abyss 926 Simple Lazerverb
814 Add Ambience 843 Space Flanger 927 TripFilter
815 Gated Reverb 844 Flange Room 979 Simple Panner
816 Reverse Reverb 845 Predelay Hall 980 Big Bass EQ