r RecommendedSASettings
forBiamplification:
1.
SUBWOOFER
PHASE:O'. lfthemainamplifier
inverts
phase,
use180".lf
you
areunsure
about
this,selectthesettingthatresults
inhigher
bass
outputwiththevolumecontrol
unchanged.
2.SUBWOOFER
VOLUME:Adiustfor aecuracy,
listeningforseamlessblendingbetween
upperand
lowerfrequencyranges.Whenchangingelectronics,
itmaybecome
necessaryto
re-adjust
the
SA's
volumeievel,sincethecorrect
volumesettingdependsonthesensitivity
of
partnering
electronics.
3.SATELLITE/ HIGH-PASSFc(High-pass
filter):Set
to lowest
position(50H2
on SA-2;
65Hzon SA-3). THISSETTINGONLYAPPLIES
TABIAMPLIFICATION
METHOD#1. IF
YOUAREUSING
METHOD#2 OR#3, IGNORE
THISSETTING.
SettheSA's
high-passfilterto itslowestsettingtoensure
thattheSA'shigh-pass
filter
does
notinterfere
withthetowerspeaker's
passive
crossover.
Inotherwords,theSAsends
only
informationfrom50Hz-up
tothemainamplifier
(and
consequently
thespeaker'supper
range
drivers).
Thespeaker
itselfthenfiltersthesignalfurther,according
tothelow-pass
filter
designed
intoitspassive
crossover.
4,SUBWOOFER
/ LOW-PASS
Fc(Low-pass
filter):Setto highsstposition(l50Hz), Setthe
SA's
low-passfiltsrtoitshighest
setting
sothattheSA'slow-pass
filterdoesnotinterferewith
thetowerspsaker's
passive
crossover.
Inotherwords,theSAsendsonly
informationbelow
150H2tothespeakelssubwoofersection,
Thespeakeritselfthen
filtersthe
signal
further,
according
toth6high-pass
lilter
designed
intoitspassive
crossover,
r BassTuning
Functions
Thefollowingtwobasstuning
functionscan
beemployedtofurther
"dialin"atower
speaker's
bass
response,
usingtheSA's
onboardlow-pass
filter
1.ll thereisexcessive
mid-bass,
lowertheSA's
low-pass
setting
(SUBWOOFER
/ LOW-PASS
Fc)until
themid-bass
responseissmoothedout. LoweringtheSA'slow-passsettingallows
gradually
increasedfilteringofthebassinformationbeforethesignalreachesthespeaker's
passive
crossovernetwork.
2.ll thereis notenoughlow bassoutput,lowertheSA'slow-passsettingandincreaseitsvol-
ume.Thisbasstuningmethod
allows
thelistenertodecrease
themid-bassresponse,
but
in
conjunctionwithincreasedoutputfromthe
subwooferamplifier.
This
effectively
increases
the
audibilityoflowbassinformation.
3.Experimentwith phase.
