User Manual
Master Fader and My Fader Reference Guide
80
Because the gain here is digital, it is recallable.
Gain is raised and lowered via the gain knobs on the DL1608 and DL806 mixers.
These are analog controls, and are therefore NOT recallable.
See the chapter on the level setting procedure, starting on page 25, for information on setting gain.
• 48v [DL32R] –
The DL32R has separate phantom power for each of the 32 channel inputs.
Tap the 48v button if the microphone connected to this channel requires phantom power.
(Always check the color of the button before connecting microphones. The button will illuminate
red when phantom power is engaged
and is gray when disengaged.
).
Not only will the 48v button itself illuminate, but “48v” will also illuminate on the input
routing button at the top of each channel strip.
Most modern professional condenser mics require 48v phantom power which lets the mixer send
low-current DC voltage to the mic’s electronics through the same wires that carry audio. (Semi-pro
condenser mics often have batteries to accomplish the same thing.) “Phantom” owes its name to an
ability to be “unseen” by dynamic mics [Shure SM57 / SM58, for example], which do not need external
power and are not aected by it, anyway.
Never plug single-ended (unbalanced) or ribbon microphones into the mic input jacks
when phantom power is on. Do not plug instrument outputs into the mic XLR input jacks
with phantom power on unless you know for certain that it is safe to do. When phantom
power is engaged, be sure that the master fader is down when connecting microphones
to the mic inputs to prevent pops from getting through the PA.
It is not a good idea to enable the phantom power unless it is actually needed. Line-level
sources may be particularly unhappy when they are subjected to 48v phantom powering.
Many musical instrument amps and keyboards with “direct outputs” t this description.
It takes approximately 15 seconds for the phantom power to shut o completely. Do not
add or remove any inputs until phantom power is completely o or mics could be ruined.
Because the phantom power here is digital, it is recallable.
48v phantom power is engaged via the phantom power switch on the DL1608
and DL806 mixers. It is a global switch aecting all channel inputs simultaneously.
It is an analog control, and is therefore NOT recallable.
• Trim – Trim is the gain adjustment for the rst amplication stage of the mixer. These mixers have
Onyx mic preamps built into the mixer, each with its own volume control – or trim control – to
properly set the gain for a particular source. Setting the mic preamp gain correctly with the trim
control is an essential step in establishing good signal-to-noise ratio and sucient headroom
for the mix because its setting determines the overall noise performance in that channel of the mixer.
See the chapter on the level setting procedure, starting on page 25, for information on setting trim.
• Polarity Invert – The polarity invert button [Ø] allows for individual channel activation of
180˚ polarity inversion; it is available on all input channels and the DL32R’s return 1-4 channels.
Press the polarity invert button to turn polarity invert on or o. It will illuminate green when engaged
and is gray when disengaged.