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22 Onyx 1620i

44. SOLO MODE

Engaging a channel's solo switch [36] will cause this

dramatic turn of events: Any existing source matrix

selections [37, 38] are replaced by the solo signal,

appearing at the control room outputs [12], phones

[17] and at the right meter [42] (left and right meters

when in AFL solo mode). The audible solo levels are

then controlled by the control room knob [40]. The solo

levels appearing on the meters are not controlled by

the control room knob [40] - you would not want that,

anyway. What you do want to see is the actual channel

level on the meters regardless of how loud the signals'

output may be.

With the solo mode switch in the up position, you are

in PFL mode, meaning Pre-Fader Listen (post-EQ). This

mode is required for the "Set the Levels" procedure and

is handy for quick spot-checks of channels, especially

ones that have their faders turned down.

With the solo mode switch down, you are in AFL

mode, meaning After-Fader Listen. You will be able to

hear the stereo output of the soloed channel - it will

follow the channel's gain [21], EQ, fader [35] and pan

[32] settings. It is similar to muting all of the other

channels, but without the hassle. AFL mode is typically

used during mixdown.

In PFL mode, solo will not be affected by a channel's

mute switch [33] position.

Remember, PFL mode taps the channel signal

before the fader. If you have a channel's fader

set way below "U" (unity gain), solo will not

know that and will send a unity gain signal to the

C-Routs[12],phonesoutput[17],andmeterdisplay

[42]. That may result in a startling level boost at these

outputs when switching from AFL to PFL mode.

41. PHONES Knob

This controls the volume at the phones output, from

off to maximum gain.

WARNING: The headphone amp is loud, and

can cause permanent hearing damage. Even

intermediate levels may be painfully loud

withsomeheadphones.BECAREFUL!Alwaysturnthis

control all the way down before connecting headphones,

or pressing a solo switch [36], or doing anything new

that may affect the headphone volume. Then turn it up

slowly as you listen carefully.

42. LEFT/RIGHT Level Meters

These peak meters are made up of two columns of

twelve LEDs, with three colors to indicate different

ranges of signal level, trafﬁc light style. They range from

–30atthebottom,to0inthemiddle,to+20(CLIP)at

the top.

If no source [37, 38] is selected in the control room/

phones, and no channels are in solo, the meters won’t do

anything. To display signal levels, select one or more of

the sources. For example, press main mix [37] to show

the main mix level in the meters. While the listening

levels are controlled by the control room and phones

knobs, the meters indicate the source mix before these

knobs, giving you the real facts at all times, even if

you’re not listening at all.

When a channel is soloed, the left meter shows no

reading, and the right meter shows the level of that

channel’s signal level, pre-fader. The right meter's 0 dB

LED is labeled "level set" to show where the level should

be when adjusting a channel’s gain [21] in the solo

mode (as described in “Set the Levels” on page 3).

When 0 dBu (0.775 V) is at the main mix outputs, it

shows as 0 dB on the meters.

Youcangetagoodmixwithpeaksashinganywhere

between–20and+10dBonthemeters.Mostampliers

clip at about +10 dBu, and some recorders aren’t so

forgiving either. For best real-world results, try to keep

your peaks between “0” and “+6.” Remember, audio

meters are just tools to help assure you that your levels

are “in the ballpark.” You don’t have to stare at them

(unless you want to).

43. RUDE SOLO Light

ThislargeLEDasheswhenoneormorechannelsolo

switches are engaged [36]. This acts as a reminder that

what you hear in the control room and headphones is

the soloed channel(s). If you forget you’re in solo mode,

you can easily be tricked into thinking that something

is wrong with your mixer. Hence, the rude solo light.

Please forgive its rudeness, it is only trying to help, and

wants to be your friend.

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