Mackie DL Series Reference Guide

Mackie DL806 and DL1608 Reference Guide
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Glossary Of Terms Continued...
Reverberation, Reverb — The sound remaining in a room after the source of sound is stopped.
It’swhatyouhearinalargetiledroomimmediatelyafteryou’veclappedyourhands.
Reverberation and echo are terms that are often used interchangeably, but in audio parlance, a distinction
is usually made: reverberation is considered to be a diuse, continuously smooth decay of sound, whereas
echo is one or more distinct, recognizable repetitions of a word, note, phrase or sound which decreases in
amplitude with every repeat.
Highlyreverberantroomsarecalledlive;roomswithverylittlereverberationarecalleddead.Asound
sourcewithoutaddedreverbisdry;onewithreverbaddediswet.
RFI — Radio Frequency Interference. High frequency radiation that often results from sparking circuits.
This may be manifested in a number of ways in audio systems, but is usually evident as a high-frequency
buzz or harsh sound.
RMS — Anacronymforrootmeansquare,aconventionalwaytomeasuretheeectiveaveragevalue
ofanaudiosignalorotherACvoltage.MostACvoltmetersarecalibratedtoreadRMSvolts,though 
on many meters that calibration is accurate only if the waveform is sinusoidal.
Sampling Frequency — This is the rate at which an analog signal is sampled during the analog-to-digital
conversionprocess.ThesamplingrateusedforCDsis44.1kHz,butprofessionalrecordingsareoften
sampled at higher sample rates.
Send — Atermusedtodescribetheoutputofasecondarymixoftheinputsignals,typicallyusedfor
monitors, headphone amp or eects devices. These are the aux sends on the DL Series mixers.
Shelving — Atermusedtodescribetheshapeofanequalizer’sfrequencyresponse.Ashelvingequalizer’s
response begins to rise (or fall) at some frequency and continues to rise (or fall) until it reaches the shelf
frequency, at which point the response curve attens out and remains at to the limits of audibility.
If you were to graph the response, it would look like a shelf. Or more like a shelf than a hiking boot.
See also peaking and dipping.
Signal-to-Noise (S/N) — This is a specication that describes how much noise an audio component
hascomparedtothesignal.ItisusuallyexpressedindBbelowagivenoutputlevel.TheS/Nofthe 
DL Series mixers is 92 dB.
Solo — Italian for alone. Solo allows you to listen to individual channels singly or in combination with
other soloed signals.
Sound Reinforcement — Asystemofamplifyingacousticandelectronicsoundsfromaperformance
or speech so that a large audience can hear clearly. Or, in popular music, so that a (hopefully) large audience
can be excited, stunned, or even partially deafened by the tremendous amplication. Sound reinforcement
meansessentiallythesamethingasPA[PublicAddress].
Spaghetti — Thatmessofwiresandcablesinthebackofyourrackand/orconsole.Youreallycantame
this beast.
SR — AnacronymforSoundReinforcement,whichreferstotheprocess(orasystemfor)amplifying
acoustic and electronic sounds from a performance or speech so that a large audience can hear clearly.
Or, in popular music, so that a (hopefully) large audience can be excited, stunned, or even partially
deafened by the tremendous amplication. Sound reinforcement means essentially the same thing
asPA[PublicAddress].

Mackie DL Series Specifications

General

Brand	Mackie
Model	DL Series
Category	Music Mixer
Language	English