HTD SS41 User manual

ConnectingSpeakerCables
1. Routethespeakercablesfromtheamplifierandfromeachspeakerzonetothespeakerselector.
2. Strip3/8”insulationfromtheendofthecableandtwisttheexposedendtoavoidfraying.
3. Pressona“push-pin”terminaltorevealaneyeintowhichthetwistedcableisinserted;releasetheterminaltolock
thecableinplace.
SS41, SS81 Speaker Selectors
SS81
Features
ThankyouforgivingHomeTheaterDirectthechancetowinyourbusiness!WeareconfidentyouwillfindthatHTDoffers
anoutstandingcombinationofperformanceandvalueineverythingwemake.Toensureyougetthemostoutofyour
newamplifier,pleasetakeamomenttoreadthismanualbeforeyougetstarted.Shouldyoulosethismanual,youcan
alwaysdownloadorprintacopyfromwww.htd.com.
TheHTDSS41(shownabove)andSS81arelow-profilespeakerselectorboxesthatallowyoutodistributeastereo
high-level(amplified)signalintomultiplezones.Bothmodelsincludeamanuallyactivatedimpedanceprotectioncircuit
thatcanbeturnedONtopreventtheimpedancepresentedtoyourreceiverfromdroppingbelowanunsafelevelof5
ohms,regardlessofthenumberandimpedanceratingsofyourspeakers.Theprotectionswitchcanalsobeturnedoff
whenusedaspartofaplannedsystemofimpedancematchingvolumecontrols,allowingyoutogetthemostoutofyour
amplifier.PleaseseetheHTDwebsiteforinstructionsforplanninganimpedancematchingsystem.Ifyouareunsure,
consultaprofessionalcontractor.
3/8”
+–INPUT–+
+– OUTPUT–+
+–4–+
+–   3–+
+–2–+
+–   1–+
PROTECTION
CIRCUIT
SWITCH
OFFON
SpeakerOutput4
SpeakerOutput3
SpeakerOutput2
SpeakerOutput1
AmplifierInputs
Pass-through
Outputs
+–4–+
+–   3–+ +–2–+
+–   1–+
Push-pinTerminals
ConnectingyourHTDSpeakerSelector
Theterminalsontherearofthespeakerselectorwillaccommodate14gaugecablewhichwillsufficeforevenlong
connections(greaterthan100feetofwire).Forshorterdistances,16-or18-gaugewirewillsuffice.Forbehind-the-
wallinstallations,werecommendusingULClass3approvedcable(marked“CL3”)forcompliancewithlocalbuilding
codes.Whenconnectingaspeakerandamplifier,itisimportanttoretainthecorrectpolarity.Todothis,besurethat
thewireattachedtothe+,red,orpositiveterminalonthespeakerconnectstothe+,red,orpositiveterminalonthe
rearoftheselectorbox.Similarly,the–,black,ornegativeterminalonthespeakermustconnecttotherespective–,
black,ornegativeterminalontheselectorbox.Polarityshouldalsobemaintainedwhenconnectingyouramplifier’s
outputstotheamplifierinputsontheselectorbox.
SS81
SS41
1234
ZoneButtons
Neverplaceaspeakerselectorwhereitisexposedtoexcessisvemoistureor
heat.Leaveatleast1”ofspaceabovetheunitforheatdissipation.
SS41andSS81Specifications
SS41 SS81
ListeningZones 4 8
ProtectionCircuitHighPowerResistors 2x10ohm/15wattperchannel 3x10ohm/15wattperchannel
PowerHandlingwithProtectionCircuitON 70watts/channel 100watts/channel
PowerHandlingwithProtectionCircuitOFF 140watts/channel 200watts/channel
Dimensions:HxWxD(inches) 1.75x8.5x4.5 1.75x17x4.5

Setto“OFF”if:
YouwillNOTturnzonesonandoffusingthezonebuttons
AND
Youareutilizingimpedancematchingvolumecontrolstoadjusttheoverallsystemimpedance
Note:itisoktodaisy-chainasecondspeakerselectorusingtheconnectorslabeled“OUTPUT”whentheprotectionswitchis“OFF”andyouareutilizingaplannedsystem
ofimpedancematching.Connectingthe“OUTPUT”ofonespeakerselectortothe“INPUT”ofasecondspeakerselectorcreatesa“parallel”connection.
Warranty
AllHTDelectronicscarryatwo-yearpartsandlaborwarranty.Warrantyregistrationoccurredautomatically
atthetimeyourorderwasplaced.Thereisnoneedtocompleteormailinadditionalpaperwork.
Setting the Protection Circuit
Setto“ON”if:
Youplantoturnzonesonandoffusingthezonebuttons
AND/OR
YouareNOTusingimpedancematchingvolumecontrols
Note:doNOTdaisy-chainmultiplespeakerselectors(usingtheconnectors“OUTPUT”)whensettingtheprotectionswitchto“ON”
PROTECTION
CIRCUIT
SWITCH
OFFON
Ifyouhaveanyquestions,wecanbereachedat...
[email protected]ortollfree1-866-HTD-AUDIO(483-2834)
StereoAmplifier
SpeakerSelector
Impedance
MatchX4
SpeakerOutputs
RL
+--+
Impedance
MatchX4
Impedance
MatchX4
Zone 2
Zone 1
Zone 3
ImpedanceMatching
StereoVolumeControl
StereoAmplifier
SpeakerSelector
*StereoVolumeControl
SpeakerOutputs
RL
+--+
Zone 2
Zone 1
Zone 3 **StereoVolumeControl
*StereoVolumeControl
Ifusingimpedancematching
stereovolumecontrols:
*=settoX1
**=settoX2
2ndpaironlypos-
siblewithimpedance
matchingstereo
volumecontrolset
toX2
ImpedanceMatching
StereoVolumeControl
ImpedanceMatching
StereoVolumeControl
PROTECTION
CIRCUIT
SWITCH
OFFON