[Milsurplus] LS-3 Speaker

[WA5CAB at cs.com]

Joe,

Input impedance for the LS-3 is 8000 ohms.  If you can wait a few weeks I can 
supply you with a replacement.  I'm waiting on K5JV to get his trailer 
emptied and have time to help me move the last batch which includes some external 
junkers.  (As an aside, I test all of the LS-3's that I sell.)   If you have a 
late model BC-342 or BC-348 and it is wired Lo-Z, you can also use a common 
500/600 ohm line to VC transformer.

To answer your last question, I wasn't aware of ithis until recently but 
apparently after the War, LS-3 and LS-7 matching transformers were somewhat sought 
after for use as plate to voice coil transformers in home-brew receivers.  
I'm in the same boat with several otherwise good LS-7's here.

In a message dated 6/24/2006 6:28:29 PM Central Daylight Time, 
carolew at bellatlantic.net writes: 
> I bought an LS-3 speaker several weeks ago and just opened it up today. It 
> turns out the
> matching transformer is missing. What kind of matching transformer do I need 
> to use this with a
> BC-342 or BC-348? Is there any commonly available substitute?
> 
> As a matter of curiosity, why did people remove these matching transformers? 
> This is the 2nd
> LS-3 that I bought that turned out to be missing the matching transformer.
> 

Robert Downs - Houston
<http://www.wa5cab.com> (Web Store)
MVPA 9480
<wa5cab at cs.com> (Primary email)
<wa5cab at houston.rr.com> (Backup email)