O peration
We recom m end thatthe SW 10 llorSW 12 powerbe left on,which willallow the
Every speaker,has lim its,and it's im portantto listen for them .Speakerdam age m ostoften results notfrom brief loud m usicalpeaks,butfrom sustained high volum e lev-
els in som e or allfrequencies. For this reason, extrem e volum e settings and excessive bass,treble or equalizerboosts are notrecom m ended.
Ifyou hearunusualdistortion orbreakup,ornotice heat com ing from the woofer,decrease volum e im m ediately, neutralize any excess bass,treble or equalizer boosts, and avoid setting any controls to sim ilarextrem es again.
M aintenance
YourSW 10 lland SW 12 is designed foryears ofuse with no orm inim alm aintenance,as long as you avoid expos- ing itto directsunlight,high tem peratures,or m oisture. Clean cabinets,when necessary,using a dam p cloth or
am ild,
9.8 Changing the Line Voltage Setting
The SW 10 lland SW 12 were designed to operate on two
line voltage settings,115VAC and 230VAC . In the event
that it is necessary to change the line voltage setting,
begin by turning the power switch to the off position.
Rem ove allthe connections from the am plifier,including
the detachable power cord. Using a flatblade screw -
driver,slide the switch to the correctposition. Use the
115VAC position for 110 to 120 VAC,and the 230VAC
position for220 to 240 VAC . Nextyou willlikely need a
powercord thatfits the AC receptacle and you willneed
to replace the fuse (see "Changing the Fuse"below)
Changing the Fuse
The SW 10 lland SW 12 am plifier's fuse is
To replace it:
•turn the powerO FF
•unplug the powercord
•rem ove the fuse holdercover(above to the powerinlet)
with a flatblade screwdriver
•rem ove the fuse from the holderand replace itwith the
appropriate type.
•reinstallthe fuse holder
Always replace the fuse with one of the exact sam e specifications.
SW 10 ll:
Forsystem s operating at115 volts,use only a 5x20 m m ,
Forsystem s operating at230 volts,use only a 5x20 m m ,
SW 12:
Forsystem s operating at115 volts,use only a 5x20 m m ,
Forsystem s operating at230 volts,use only a 5x20 m m ,
Troubleshooting
Ifthe SW 10 llor SW 12 fails to operate atallwhen the PowerSwitch is turned on,thoroughly check the power cord,inputand outputconnections
Ifthe SW 10 llor SW 12 turns on butthe LED indicator fails to illum inate,m
Ifthe SW 10 llorSW 12 turns on butits status LED stays red,the unitis gone into protectm ode,which could be caused by incorrect wiring, short circuits, or excessive volum e.Turn offthe PowerSwitch on the subwooferfor two or m ore seconds to reset, and double check all speakercables to be sure thatno sm allm etalstrands are shorting the term inals.
Ifthese steps don'trestore the SW 10 llorSW 12 to oper- ation, contactyourlocalAuthorized NHT DealerorNHT forassistance.
Satisfaction
Your satisfaction with your new NHT SW 10 llor SW 12 Subwooferis im portantto us. Please note the m atched products and accessories we provide forthem ,and your warranty,printed on the back ofthis m anual. Ifyou have any questions regarding yourspeakers'use,feelfree to callNHT 
