OSD Audio Mono Subwoofer Amplifier User manual

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OWNERSMANUAL
MonoSubwooferAmplifier
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IMPORTANTSAFETYINSTRUCTIONS
1) Readtheseinstructions.z
2) Keeptheseinstructions.
3) Heedall warnings.
4) Followallinstructions.
5) Donotusethisapparatusnearwater.
6) Cleanonlywithdrycloth.
7) Donotblockanyventilationopenings. Install inaccordance withthemanufacture sinstructions.
8) Donotinstall nearanyheatsourcessuchasradiators, heatregisters, stoves, orotherapparatus
(includingamplifiers)thatproduce heat.
9) Donotdefeatthesafetypurposeofthepolarizedorgrounding-typeplug.Apolarizedplughastwo
bladeswithonewiderthantheother.Agroundingtypeplughastwobladesand athirdgrounding
prong.Thewidebladeorthethirdprongareprovidedforyoursafety. Iftheprovidedplugdoes not
fitintoyouroutlet, consultanelectricianforreplacementoftheobsoleteoutlet.
10) Protectthepowercordfrombeingwalkedonorpinchedparticularlyatplugs, convenience
receptacles, and thepointwheretheyexitfromtheapparatus.
11) Onlyuseattachments/accessoriesspecifiedbythemanufacturer.
12) Useonlywiththecart, stand,tripod,bracket, ortablespecifiedbythemanufacturer, orsoldwith
theapparatus.Whenacartisused,usecautionwhenmovingthecart/apparatuscombinationto
avoidinjuryfromtip-over.
13) Unplugthisapparatusduringlightningstormsorwhenunusedforlongperiodsoftime.
14) Referallservingtoqualifiedservice personnel. Servicingisrequiredwhentheapparatushasbeen
damagedinanyway, suchaspower-supplycordorplugisdamaged, liquidhas beenspilledor
objectshavefallenintotheapparatushasbeenexposedtorainormoisture, doesnotoperate
normally, orhasbeendropped.
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Thesymbolinfigure17 shallbeshownbeshownadjacenttothetextofitem12 above.
Toreduce theriskoffireorelectricshock, donotexposethisapparatustorainormoisture.
15) Warningtoreduce theriskoffireorelectricshock, donotexposethisapparatustorainormoisture.
16) Warning:themainsplugoranappliance couplerisusedasthedisconnectdevice,thedisconnect
device shallremainreadilyoperable.
17) Donotblockanyventilationopenings. Leaveanopenspace around theequipment.Neverplace the
equipmentonabed, sofa, rug, oranyothersimilarsurface. Donotplace apparatustocloseto
drapes/curtains/walls, orinabookcase, build-incabinet,oranyothersimilarplacesthatmay cause
poorventilation.
18) Theapparatusshouldbeconnectedtoamainssocketoutletwithprotectiveearthingconnection.
19) Theusershouldnotattempttoservicetheappliance beyond thosemeansdescribedintheoperation
instruction.All otherservicingshouldbereferencedtoqualified.
Warning:TheseclassIapparatusshallbeconnectedtoamainssocketoutletwithaprotectiveearthing
connection.
Caution:onlymakeconnectionwhentheamplifieristurnedoff.
Theretwooutputterminalsonthebackoftheamplifier, onepositiveandonnegative. There
arethree waystobindingpostoutputterminalsallowforavarietyofwaystoconnectoursubwoofer
wiringtotheamplifier, includestrippedwire, spadeconnectors, etc.Youmustuseaminimumof
14-gaugespeakerwire. Besureallconnectionsaresolid.
Congratulationsonyourpurchaseofthesubwooferamplifier!Thesubwooferampwillprovidetheexcellent
performanceandreliability.Toreceivethebestperformance fromyouramp, pleasecarefullyreadthe
instructionsinthismanual.
PLACEMENT
DO:
lPlace theamplifierwiththefeetrestingonasolidflatlevelsurface.
lPlace theamplifierinawell-ventedarea toprovidepropercooling. Inareasthatlackproper
ventilation, suchastightcabinetsorracks, itmaybenecessarytoinstall smallfanstocreateair
movement.
DON T:
lDon tblocktheventilationholesonthetoporbottomoftheamplifier. Neverplaceitoncarpeting
orsimilarmaterial.
lDon tplacetheamplifierinanyotherpositionotherthanhorizontalwiththefeetdown. Never
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place onitssideorrestingonthebackwheretheterminalsarelocated.
lDon tplacetheamplifiernearheatsources,orinanarea thatitwouldbeexposedtomoistureor
excessivehumidity.
YOU SHOULDKNOW
lThepowersupplymaycauseahumtobeheardinsomecomponentsiftheyareplacedveryclose
totheamplifier.
Installation
PleaseuseDiagram1tofamiliarize yourselfwiththerearpanelofsubwoofer.
DIAGRAM1
SubwooferRearPanel
INSTALLATION(continued)
1. ConnectingtheSubwoofertotheAmplifier
CAUTION: Onlymakeconnectionswhentheamplifieristurnedoff.
Thereare2outputterminalson thebackoftheamplifier,onepositiveandonenegative(seediagram1).These
3-waybindingpostoutputterminalsallowfora varietyofwaystoconnectyoursubwooferwiringtotheamplifier,
includingstrippedwire, spadecon-nectors, etc.YouMUSTusea minimumof14 gaugespeakerwire. Besureall
connectionsaresolid.
2. ConnectingtheAudioInputs
CAUTION: Toavoidpossibledamagetotheamplifierorsubwoofer, onlymakeconnectionswhentheamplifieris
turnedoff.
.LFE(LowFrequencyEffects)Input –IfyourpreamplifierorreceiverhasaSubOutorLFEout, youcanconnectittothe
LFEinput.BeawarethatusingtheLFEinputbypassestheamplifier sadjustablelowfrequency(lowpass)crossover.
.LineLevelInputs(Left &Right) –Thelineoutputsfromapreamplifierorreceivercanbeconnectedtothelinelevelinputs
oftheBass powerwithRCAcables. Ifthelinelevelsignalisalsorequiredbyotherequipment,youcancon-nectthelinelevel
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outstoanotherdevice. (See theLineLeverOutputssectionbelow.)
.Speaker LeverInputs(Left&Right) –Theseinputscanbeusedifyourreceiverdoesnothaveasubwooferoutputorasetof
lineoutputjacks.Beingsuretoobserveproperpolarity, connecttheleftand rightpairof mainspeakeroutputwiresfromyour
amplifierorreceivertothespeakerlevelinputterminalsof theBass Poweramplifier. Thenconnectaleftandrightpairof
speakerwiresfromtheBass Powerspeakerleveloutputtoyourmainspeakerterminals.(See SpeakerLevelOutputsection
below)
3. ConnectingtheAudioOutputs(optional)
.LineLevelOutputs(Left &Right) –Sourcesconnectedtothelinelevelinputscanbeforwardedtootherreceiversor
amplifierslinelevelinputs.Bydoingthisyoucanpass-ontheaudiosignalforusebyanothercomponent.Connect RCAcables
tothelineleveroutputsectionsof theBass PowerandtheLinelevelinputsof areceiveroramplifier.
.SpeakerLevelOutputs(Left &Right) –Connectaleftandrightpairof speakerwiresfromtheBass Powerspeakeroutputs
terminalstoyourmainspeakers. Themainspeakerswillstillbepoweredbyyoursystem sreceiveroramplifier.
4. DualVoltageSwitch(See Diagram2)
ForuseintheU.S.,theBass Powerconespresetfromthefactoryat 115V. Foruseinothercountries,thevoltageswitchmay
needtobechangedto230V. (Pleasenotethataplugadapteroralternatepowercordmayberequired.)
DIAGRAM2
Dual VoltageSwitch
4. ConnectingtheAC Power
PlugthesocketofthesuppliedACcordintothereceptacleontherearoftheamplifier. Plugthe3-prongplug
directlyintoa wall outlet. If youwishtoplugtheamplifierintoa preamplifierorreceiver sswitchedoutlet,make
sureitisratedatleast600watts.However, itisalwayssafertoplugtheBass PowerdirectlyintoanACoutlet.
AMPLIFIEROPERATION
PleaseuseDiagrams1 3tofamiliarizeyourselfwiththefrontandrearpanelsofthesubwooferPower.
CAUTION: pleasereadall thefollowing instructionstopreventcausingdamagetoyoursystem.
FrontPanelControls
PowerSwitch
Theswitchmarked “power”onthefrontpaneloftheamplifierwill turnoff all amplifiercircuitryincludingAuto
sensecircuitry.
lVolumeControls
Usethistomatchtheoutputlevelofthesubwoofertothatofthemainspeakersinthesystem.Werecommendthat
youplaya varietyofmaterialbeforeselectinga setting.Startwiththecontrolturnedcompletelycounterclockwise
(off) andslowlyturnitup. NOTE: Turning thevolume up slowlywillpreventpossibledamagetothewooferfrom
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the system being run too “hot”. Very little movement of the knob is needed.
CAU T I ON: if a popping sound (clipping) is audible through the subwoofer, it is being over drive, reduce
the volume of the amplifier, or speaker damage may occur! (See Volume L imit Control for proper
adjustment of volume settings to avoid distortion damage.)
L ow Pass F ilter
Use this control to adjust the upper frequency limit of the subwoofer Power. T he purpose is to control the overlap of
the subwoofer Power’s upper frequencies and the main speaker’s lower frequencies. If adjust well, this allow
seamless blending of the subwoofer with the speakers.
Phase C ontrol
T his control allows you to match the arrival times of the sound waves of the Bass Power and the
main speakers to your listening area. While the system is playing, flip the switch to the 180!and
back to 0!until the bass sounds louder or less boomy. Depending on the subwoofer placement and
room acoustics, this control may have little or no effect.
DI A G RA M 3
Subwoofer front panel
"R ear Panel C ontrol
.Volume L imit C ontrol
Use this control to adjust the maximum volume setting for your subwoofer power system. With the level
control and front panel volume control turned all the way down (counterclockwise), turn on the subwoofer
and start playing audio through your system.
T R OUBLE SH O OT I NG
T he B ass Power Subwoofer System is designed to function trouble-free. Most problems occur because of
operating errors. If you have a problem, please check the troubleshooting list first. I f the problem persists,
contact Tech Support at or e-mail us at
T he pr oblem Possible C auses and Solutions
No sound is heard. Audio to the amplifier is not connected properly. Check this and other system component
manuals to be sure of proper connections.
The cable is bad. Use another cable that you know is good.
L oose or frayed wires. Check for solid, clean connections on all speaker wire terminals.
Volume L imit C ontrol is set too low. SeeVolume L imit Control for adjustment procedure.
A hum or buzzing sound is heard. T he sound may be caused by a ground loop in the system. Try to eliminate this by revers-
ing the A C plugs of other components in the system.
Try plugging the ampli fier into another outlet.
Other causes may include faulty cables.
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The amplifier will not turn on. There may be AC power problems. Check the AC circuit and plugs. Be sure the power
switch is turned on.
Audio cable to the amplifier is not connected properly. Check this and other system
component manuals to be sure of proper connections.
The cable is bad. Use another cable that you know is good.
L oose or frayed wires. Check for solid, clean connections on all speaker wire terminals.
The Protection Circuit cuts in
momentarily and then returns to normal.
The circuitry in the amplifier has detected that the amplifier is in danger of overheating.
Normally, this would happen infrequently and momentarily. If is persists, the amplifier
may need to have more adequate ventilation.
The Protection Circuit cuts in and does
not return to normal.
There may be a fault in the wiring, the speaker, or the amplifier. Turn the power switch
o and then on again. If the amplifier immediately returns to the protection mode, turn it
o and check all of the wiring, including all connections at the amplifier, at the
subwoofer, and any connections made to the terminals on a wall plate.
SP EC IFIC AT IONS
Type: Mono ClassAB dedicated subwoofer amplifier
Power Output: 150 watts
Crossover: Variable L ow Pass Crossover 35 Hz to 180Hz
Auto Off Time: 20 minutes
Auto On Sensitivity: 5 mV
In our attempt to constantly improve our products,features and specifications are subject to chang without notice.
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14”x 17 1/4” x 4” (356mm x 437mm x 102mm)
Dimensions D*W*H