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Telos Zephyr Xstream Two-Way Radio User Manual

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USER’S MANUAL

Section 10: APPLICATIONS GUIDE 185

Example2:UsingaUtilityMixer

Thesimplestformofmix‐minususingaUtilityMixerwithmonoinputs.Two

monofadersandtwobusses,AUX1andAUX2areused.

Itisalsopossibletousethemixer'smainoutputstoformamix‐minus,by

PanningoneInputchannel"hardle

ft"andtheotherinput"hardright".

Phones and Remotes

Tosavemoneyandhassle,callersareusuallyreceivedatthestudio,ratherthanattheremote

site.Inthissituation,phonesneedtobefedtotheremotetalent,sothattheycanhearand

respondtocallers.Moreover,thephon

ecallersneedtohearthetalent.Inmanycases,the

remotesaresufficientlydistantthatthestationcannotbemonitoredforthecallerfeed.Evenif

itcould,theprofanitydelaywouldbeaproblem,sincethetalentneedstohearthephonepre‐

delay.

Thetalenthearscallersviathereturnpat

h.Asbefore,thisreturnisfedwithmix‐minus:amix

ofeverythingontheprogrambusminustheremoteaudio.

Asforthesecondhalfoftheequation,thecallershearthetalentbecausetheremotefeedis

addedtothetelephonemix‐minusbuss.Noproblemifyouhaveaset‐upthatpermitssele

ctive

assignmenttothephonemix‐minus.

Themostcommonproblemwiththisarrangementisaresultofaphonehybridwithtoomuch

leakagecombinedwiththesystemdelay.Ifthehybridisn'tdoingagoodjobofpreventingthe

sendaudiofr

omleakingtoitsoutput,thespecialremotesendmix‐minusiscorrupted.

AUX 1

AUX 2

LEFT OUTPUT

AUX 1 OUT

AUX 2 OUT

UTILITY

MIXER

Mic 1

Z XS A Z XS B

NOTE

: This must be

turned down or AUX 1

will no longer be a

mix-Minus

NOTE

: This must be

turned down or AUX

2 will no longer be a

mix-Minus

Input B

Input A

RIGHT OUTPUT

PAN

Output B

Output A

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