AMS Neve S - DMX, User Manual

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Using the S-DMX
Back To Basics
A digital delay line (DDL) as its name implies, is a device that receives a given signal at its
input and after a defined lapse of time (programmed by the user) reproduces that exact
same signal at the output. The DDL, as in the case of the S-DMX, should not alter or
modify the signal no matter what delay is programmed. The S-DMX has two such delay
lines which are independently programmable.
The output of channel ‘a’ can be switched in phase or 180 degrees out of phase with the
original signal whilst the output of channel ‘b’ is always in phase with the original.
The S-DMX, as stated above, does not modify the signal when applying a delay.
However, re-generative effects and VCO or vibrato effects can be introduced if required
by adjusting the relevant controls on the front panel.
It is obvious that a great deal can be accomplished using the S-DMX besides simple
delay, and the following paragraphs have been written to help the studio engineer get
the best possible use from the unit.
Original Settings
With the power switched on and a signal present ensure that both input level control
knobs are set correctly, i.e. ensure that both regen control knobs are set to zero and
adjust the input level control knobs so that the red LEDs illuminate on programme peaks
only. The output control knob should be adjusted to ensure a good match between the
unit and the mixing desk. The following should now be set as indicated:
‘in sep./mix’ to in sep.
‘out sep./mix’ to out sep.
‘VCO speed and depth’ controls to zero.
‘regen’ controls still set to zero.
‘norm/lock in’ switch to norm.
‘chan.a in phase/out’ switch to chan.a in phase.
‘xtal./vco’ switch to xtal.
S-DMX User Manual
Issue 3 Page 11