Lexicon
300L Owner's Manual
4-28
Chamber
Chamber
Parameters
The Chamber program provides several presets which can be loaded into any
Dual Mono or Cascade setup. In the Dual Mono setups it passes audio Mono In-
Mono Out. In the Cascade setups, audio is routed Mono In-Stereo Out. The
Chamber program can simulate many different types of acoustic spaces or
mechanical devices.
The Chamber algorithm is great on anything. Sizes of 25 and larger set a lower
acoustic density. SHP and SPR help create the illusion of larger spaces while
using short reverb times. As in the Random Hall algorithm, the LNK parameter
couples SIZ to the RTM and SPR. Unlink provides a method of setting stable
RTM and SPR values, then adjusting SIZ to set the right density and “tuning”.
Chamber is bright by design, so you may want to use lower values of RTC —
maybe even as low as 1.0kHz or 500Hz.
The randomization circuit in Chamber is designed to reduce coloration and/or
frequency nodes caused by low frequency input. If you want to create your own
special Chambers or Halls, you should keep RAN set to 80 or 90.
Typically, SIZs of 14-24 meters with RTCs higher than 3.4kHz will emulate bright
sounding metal plates. Remember to set SHP and SPD to extremely low values
to maintain the explosiveness of the reverb decay. Because plates are very
diffuse, any preset mimicking a plate should have DIF set relatively high (70-80),
while BAS is kept to some value less than 1.2kHz.
DIF and PDL precede the reverberator. When Chamber programs are loaded
into Dual Mono setups, the audio will be Mono In-Mono Out. When loaded into
Cascade setups, audio is routed summed Mono In-Stereo Out.
General Description
Σ
Diffusion
Split Chamber
Predelay
RTM SIZ SHP SPR
XOV BAS TDC LNK
RAN
PAGE ONE
RTM* BAS XOV SIZ TDC PDLY
.19-51.50S 0.2-4.0X 0.1-26.5KHZ 4.0-66.4M 0.5-21.2KHZ 0-1000MS
PAGE TWO
RAN DIF SHP SPR* LNK
NONE,0-98%,UP FULL 0-99 0-255 0-255 LINK/UNLINK
* Parameter ranges are dependent on settings of SIZ and LNK.
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