UAD Powered Plug-Ins Manual - 169 - Chapter 17: Lexicon 224
Higher Diffusion values are frequently desirable when the material has a lot
of percussion. Higher Diffusion can also contribute to a smoother-sounding re-
verb. With low Diffusion values the early reverb will be “grainy” and sparse,
but will produce a clear, bright sound that is very useful with strings, horns,
and vocals. Low Diffusion is also useful in classical music or in adding a sense
of depth to an overall mix. Note that in Lexicon 224, lower frequencies are
generally less diffuse.
Note: If Immediate mode is active, the Diffusion value is retained when
changing programs.
Predelay Predelay produces a short delay between the sound source and the onset of
reverberation. Higher Predelay values increase the time before reverb onset.
The range of this parameter varies depending on the active program; see
Table 13 on page 169 for the available values. The default value is program
dependent.
Immediate When Immediate (“IMMED”) is enabled, current parameter values
are retained when a new program is selected. When Immediate is
inactive and a program is selected, the Lexicon default factory pre-
set parameter values for the program are loaded and the control
sliders move to the preset values.
Enabling Immediate mode is convenient for quickly auditioning the various
program algorithms using the same “persistent” parameter values. Disabling
Immediate mode is convenient for quickly auditioning the various programs
with the Lexicon factory default settings.
The default Immediate value is OFF. Immediate affects the following parame-
ters: Bass, Mid, Crossover, Treble Decay, Depth, Predelay, Diffusion, Mode
Enhancement, Pitch Shift, Decay Optimization, and Rear Outs.
Table 13. Lexicon 224 Predelay Ranges
Program Predelay Range Program Predelay Range
1. Small Concert Hall B 24 - 152 6. Small Concert Hall A 24 - 152
2. Vocal Plate 0 - 107 7. Room A 24 - 255
3. Large Concert Hall B 24 - 152 8. Constant Density Plate A 5 - 185
4. Acoustic Chamber 25 - 255 9. Chorus A 0 - 253
5. Percussion Plate A 0 - 107 Note: Predelay values are in milliseconds.
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