They could be powered by photo voltaic cells. That's another name for the miss named solar batteries. They don't need actual sunlight to generate some voltage. The only other alternative I can come up with is to power the amplifiers that in turn drive the speakers from the RF energy from the transmitter. That would take a lot of RF power. How would you like to sit in a microwave oven while watching TV, grin. If there aren't any replaceable batteries in them it's most likely a combination of photo voltaics and rechargeable which get recharged between uses.
Regards. Max. K 4 O D S. Email: [EMAIL PROTECTED] Transistor site http://www.funwithtransistors.net Vacuum tube site: http://www.funwithtubes.net Music site: http://www.maxsmusicplace.com To subscribe to the fun with tubes group send an email to, [EMAIL PROTECTED] ----- Original Message ----- From: "Brice Mijares" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Saturday, November 22, 2008 2:12 PM Subject: Re: [BlindHandyMan] wireless spekers > Well, I don't know what to tell you. My Son has some speakers that came > with his Home Theater system, and he says that 2 of them are wireless and > there is no power source. I told him the same thing, something had to > power > the speakers, either ac or dc. He said there was no batteries. Next time > I'm over his home I'm going to check these speakers out. I'd say it > came > with batteries already installed in the units and he probably didn't know > it, as young people don't usually read the instructions. But, he's had > these speakers for over a year, and I can't see any type of battery > lasting > that long. > > ----- Original Message ----- > From: "Max Robinson" <[EMAIL PROTECTED]> > To: <[email protected]> > Sent: Saturday, November 22, 2008 12:01 PM > Subject: Re: [BlindHandyMan] wireless spekers > > >> They will work only if their are batteries in the speaker box. If >> someone >> tries to tell you otherwise, either they are miss informed or they are >> having you on. >> >> Regards. >> >> Max. K 4 O D S. >> >> Email: [EMAIL PROTECTED] >> >> Transistor site http://www.funwithtransistors.net >> Vacuum tube site: http://www.funwithtubes.net >> Music site: http://www.maxsmusicplace.com >> >> To subscribe to the fun with tubes group send an email to, >> [EMAIL PROTECTED] >> >> ----- Original Message ----- >> From: "Brice Mijares" <[EMAIL PROTECTED]> >> To: <[email protected]> >> Sent: Saturday, November 22, 2008 1:54 PM >> Subject: [BlindHandyMan] wireless spekers >> >> >>> Can someone explain how wireless speakers can work without any power >>> source >>> to power the speakers themselves. >>> >>> >>> ------------------------------------ >>> >>> Send any questions regarding list management to: >>> [EMAIL PROTECTED] >>> To listen to the show archives go to link >>> http://www.acbradio.org/pweb/index.php?module=pagemaster&PAGE_user_op=view_page&PAGE_id=33&MMN_position=47:29 >>> Or >>> ftp://ftp.acbradio.org/acbradio-archives/handyman/ >>> >>> The Pod Cast address for the Blind Handy Man Show is. >>> http://www.acbradio.org/news/xml/podcast.php?pgm=saturday >>> >>> Visit The Blind Handy Man Files Page To Review Contributions From >>> Various >>> List Members At The Following address: >>> http://www.jaws-users.com/JAWS/handyman/ >>> >>> Visit the archives page at the following address >>> http://www.mail-archive.com/[email protected]/ >>> >>> If you would like to join the JAWS Users List, then visit the following >>> address for more information: >>> http://www.jaws-users.com/ >>> For a complete list of email commands pertaining to the Blind Handy Man >>> list just send a blank message to: >>> [EMAIL PROTECTED] Groups Links >>> >>> >>> >>> >>> >> >> >> ------------------------------------ >> >> Send any questions regarding list management to: >> [EMAIL PROTECTED] >> To listen to the show archives go to link >> http://www.acbradio.org/pweb/index.php?module=pagemaster&PAGE_user_op=view_page&PAGE_id=33&MMN_position=47:29 >> Or >> ftp://ftp.acbradio.org/acbradio-archives/handyman/ >> >> The Pod Cast address for the Blind Handy Man Show is. >> http://www.acbradio.org/news/xml/podcast.php?pgm=saturday >> >> Visit The Blind Handy Man Files Page To Review Contributions From Various >> List Members At The Following address: >> http://www.jaws-users.com/JAWS/handyman/ >> >> Visit the archives page at the following address >> http://www.mail-archive.com/[email protected]/ >> >> If you would like to join the JAWS Users List, then visit the following >> address for more information: >> http://www.jaws-users.com/ >> For a complete list of email commands pertaining to the Blind Handy Man >> list just send a blank message to: >> [EMAIL PROTECTED] Groups Links >> >> >> >> > > > ------------------------------------ > > Send any questions regarding list management to: > [EMAIL PROTECTED] > To listen to the show archives go to link > http://www.acbradio.org/pweb/index.php?module=pagemaster&PAGE_user_op=view_page&PAGE_id=33&MMN_position=47:29 > Or > ftp://ftp.acbradio.org/acbradio-archives/handyman/ > > The Pod Cast address for the Blind Handy Man Show is. > http://www.acbradio.org/news/xml/podcast.php?pgm=saturday > > Visit The Blind Handy Man Files Page To Review Contributions From Various > List Members At The Following address: > http://www.jaws-users.com/JAWS/handyman/ > > Visit the archives page at the following address > http://www.mail-archive.com/[email protected]/ > > If you would like to join the JAWS Users List, then visit the following > address for more information: > http://www.jaws-users.com/ > For a complete list of email commands pertaining to the Blind Handy Man > list just send a blank message to: > [EMAIL PROTECTED] Groups Links > > > > ------------------------------------ Send any questions regarding list management to: [EMAIL PROTECTED] To listen to the show archives go to link http://www.acbradio.org/pweb/index.php?module=pagemaster&PAGE_user_op=view_page&PAGE_id=33&MMN_position=47:29 Or ftp://ftp.acbradio.org/acbradio-archives/handyman/ The Pod Cast address for the Blind Handy Man Show is. http://www.acbradio.org/news/xml/podcast.php?pgm=saturday Visit The Blind Handy Man Files Page To Review Contributions From Various List Members At The Following address: http://www.jaws-users.com/JAWS/handyman/ Visit the archives page at the following address http://www.mail-archive.com/[email protected]/ If you would like to join the JAWS Users List, then visit the following address for more information: http://www.jaws-users.com/ For a complete list of email commands pertaining to the Blind Handy Man list just send a blank message to: [EMAIL PROTECTED] Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/blindhandyman/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/blindhandyman/join (Yahoo! 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