Universal Audio Ampex ATR-102 Manual page 169

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:
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
dependent.
Table 13. Lexicon 224 Predelay Ranges
1. Small Concert Hall B
2. Vocal Plate
3. Large Concert Hall B
4. Acoustic Chamber
5. Percussion Plate A
Immediate
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.
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If Immediate mode is active, the Diffusion value is retained when
for the available values. The default value is program
Program Predelay Range
24 - 152
0 - 107
24 - 152
25 - 255
0 - 107
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.
Program
6. Small Concert Hall A
7. Room A
8. Constant Density Plate A
9. Chorus A
Note: Predelay values are in milliseconds.
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Predelay Range
24 - 152
24 - 255
5 - 185
0 - 253
Chapter 17: Lexicon 224