My Karlson's at home. - UK Vintage Radio Repair and Restoration Discussion Forum

Osvaldo LW1DSE · 3rd Feb 2022, 10:44 am

Those are my old-fashioned homebrewed Karlson's. Two of them are 15 inch speakers fom the 70's plus 4 inch cone tweeters, and a kind of self designed coax units. The other is 12" plus 4" and is used as difference chanel with its own amplifier (the signal amplified from L - R).

wd40addict · 5th Feb 2022, 12:33 pm

How do you find the sound? They were the latest and greatest in mid 50s America, but although allegedly made to a mathematical formula when scaled to 12" it didn't work and users were advised to use the 15" design with a spacer ring. Gradually fell out of favour and seemed to end its days being used in PA systems.

See page 58 on:

https://worldradiohistory.com/Archiv...ws-1954-01.pdf

3rd Feb 2022, 10:44 am	#1
Osvaldo LW1DSE Tetrode Join Date: Jan 2022 Location: Barrio Garay, Almirante G. Brown, Buenos Aires, Argentina Posts: 76	My Karlson's at home. Those are my old-fashioned homebrewed Karlson's. Two of them are 15 inch speakers fom the 70's plus 4 inch cone tweeters, and a kind of self designed coax units. The other is 12" plus 4" and is used as difference chanel with its own amplifier (the signal amplified from L - R). Attached Thumbnails __________________ Enjoying high heel sandals, shoes or boots when I can.

5th Feb 2022, 12:33 pm	#2
wd40addict Octode Join Date: May 2009 Location: Stevenage, Herts. UK. Posts: 1,518	Re: My Karlson's at home. How do you find the sound? They were the latest and greatest in mid 50s America, but although allegedly made to a mathematical formula when scaled to 12" it didn't work and users were advised to use the 15" design with a spacer ring. Gradually fell out of favour and seemed to end its days being used in PA systems. See page 58 on: https://worldradiohistory.com/Archiv...ws-1954-01.pdf Last edited by wd40addict; 5th Feb 2022 at 12:46 pm.