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''Note: OS 4.0 converts the {{Crumbs|orange|3 delay types |Kemper KPA Effects#Tone Controls|Tone|Kemper KPA Effects#MAB Advanced Reverb Effects|MAB Reverbs|Kemper KPA Effects#Differences in the legacy section below into a '''Legacy Delay''' type, and introduces a slew of new delay types.''Types|Delay Types|Kemper KPA Effects#Tempo Considerations|Tempo|Kemper KPA Effects#Space Effect|Space}}
→Differences in Delay Types
|Kemper KPA Effects#Shapers|Shapers
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All those Wah Wah choices can initially look intimidating and confusing. Many are simply manual control over typical modulation effects, but their own type here to be automatically controlled by an expression pedal assigned to CC# 1 (Wah). Here's the break down:
* '''Wah Wah''' - this is the basic wah wah pedal, a band pass filter.
* '''Wah Low Pass''' - rather than a bank pass filter, the wah is a low pass; goes from dark to full
* '''Wah High Pass''' - rather than a bank pass filter, the wah is a high pass; goes from full to thin/shrill
* '''Wah Vowel''' - filter simulating a talkbox effect by emphasizing formants through the sweep
* '''Wah Phaser''' - a phaser effect where you manually control the sweep instead of an LFO
* '''Wah Flanger''' - a flanger effect where you manually control the sweep instead of an LFO
* '''Wah Rate Reducer''' - controls the sample rate, causing distortion and aliasing, glitchy sounds
* '''Wah Ring Modulator''' - controls a sine wave frequency fed into the signal for modulation
* '''Wah Frequency Shifter''' - a ring modulator that only allows for harmonic frequencies - sounds like radio tuning modulation
* '''Wah Formant Shifter''' - controls formant shifting of single notes. center position is normal, basically no processing. while the vowel filter changes an EQ-like sweep over one formant type, this shifts the formant types themselves
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== Mono vs. Stereo ==
=== Tone Controls ===
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Both the Delay and Reverb blocks feature Frequency and Bandwidth settings that affect the frequency response of the blocks. The Bandwidth control is essentially a Q control, narrowing the range of frequencies allowed to pass through as you turn it higher and higher. At 0, it is doing nothing. At max, it is only allowing a very, very narrow range of frequencies through.
=== MAB Advanced Reverb Effects ===
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A big complaint about the KPA is its lack of great reverb effects, particularly a spring reverb. I attempted to create some advanced reverb presets that fill this void until '''''Kemper''''' adds them. See the [[Kemper KPA MAB Advanced Reverb Presets|MAB Advanced Reverb Presets page]].
=== Differences in Delay Types ===
''Note: OS 4.0 converts the 3 delay types in the legacy section below into a '''Legacy Delay''' type, preparing for 5.0 to introduce a slew of new delay types.'' ==== OS 45.0 Delays ====While there are a large number of delay effects listed in OS 45.0, they all boil down to a few core delay types with different features available:
* '''Two-Tap Delay''' - features two delays that function in tandem, not independently. The first setting is the baseline setting, while the other is the offset of the first. So you can get pairs of delays such as 100ms, 120ms, 200ms, 220ms, 300ms, 320ms...
* '''Serial Delay''' - this is essentially two delays built into one effect, with the output of the first feeding directly into the input of the second. The second delay will repeat the raw guitar as well as the trails of the first.
=== Tempo Considerations ===
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Tempo can be viewed, locked, changed, and disabled from the [[Kemper KPA System and Rig Settings#Tempo|Rig block's settings]]. This mainly affects the Delay block's operation.
=== Space Effect ===
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In addition to Delay and Reverb, there is an effect called '''Space''' that operates similarly to a reverb, perhaps with very subtle delay thrown in, as well as a stereo widening type effect. This effect was designed to make the sound of headphones sound more like the sound of a room. It was originally created just as an option in the Output section for headphones, but can now be applied to all outputs, or assigned as an effect block with different settings per rig.
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