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In some program modes, the yellow "LED ring" around the control is illumi-
nated to indicate that changing the switch position will change the sound. For
program modes that do not offer quadraphonic processing (e.g., Delay), the
switch is re-purposed to sum the processed outputs to mono. In Echo mode, it
functions as an input mute.
Some EMT 250 control functions change depending on the active mode (see
Automation
"Variable Control Functions" on page 242
modate this design, all EMT 250 parameters are exposed for automation and
external control surfaces even if the parameter is not active in the current pro-
gram mode.
Important:
have no effect if those parameters are not active in the current program mode.
All input and output characteristics of the EMT 250 are fully emulated in the
Modeled I/O
plug-in. This includes all of its idiosyncrasies, such as the A/D and D/A
anti-aliasing filters (which are not linear-phase), system latency, input clip-
ping, and limited frequency response. All these quirks embellish the unique
sonic signature.
The EMT 250's anti-aliasing filters for its A/D and D/A conversion are not lin-
EMT 250
Latency
ear-phase filters; therefore our emulation does not have a latency that is the
same at all frequencies. Thus, we cannot report to the delay compensation en-
gines a delay that is correct for all frequencies. The value we report is good
at low frequencies, but becomes off at high frequencies.
For example, when the plug-in is in Delay program mode and set with zero
delay time and predelay values, the plug-in output will not be completely can-
celled when mixing with flipped phase against an unprocessed track; high
frequencies will leak through. However, the latency through the dry side of the
wet/dry mix, and the latency when the plugin is bypassed via the EMT 250
Power switch
sated by the DAW.
UAD Powered Plug-Ins Manual
Parameters that are automated and/or externally controlled will
(page
252), do not have this issue and will be fully compen-
- 244 -
and
Table 17
below). To accom-
Chapter 20: EMT 250 Electronic Reverberator
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