Lee Laboratory - model 50 Cruiser

juliovideo · 04:22 AM

Hi ; ........ I'm looking for the electrical schematic of this amplifier ,.................. thanks for your help.

LEE De FOREST LABORATORY POWER AMPLIFIER

http://www.leedeforest.org/awa.html

Lee De Forest (August 26, 1873 – June 30, 1961) was an American inventor with over 180 patents to his credit.

Lee De Forest

http://en.wikipedia.org/wiki/Lee_De_Forest

In the early 1920s, Western Electric researched both sound-on-film and sound-on-disc systems, aided by the purchase of Lee De Forest's Audion amplifier tube in 1913, and the development of the public address system and the condenser microphone in 1915.

http://en.wikipedia.org/wiki/Vitaphone

--------------------

juliovideo · 24th February 2010, 09:39 PM

Any ideas ? ;...............Does anyone know anything about this amplifier?

Thanks

----------------------

jlsem · 24th February 2010, 10:00 PM

I can't help you with a schematic but I don't think Lee DeForest had anything to do with it. It looks like a one-off to me.

John

DigitalJunkie · 24th February 2010, 10:07 PM

I think I'd have to agree,It looks like a one-off.. Those caps are the newish style (granted,they could have been replaced at some point),and that "Cruiser" emblem reminds me of the emblems on older cars.I have one for a Chevelle in that exact font/style.

planet10 · 24th February 2010, 10:28 PM

It could well be a production model with some upgrades... it looks the part.

No matter, i strongly suspect it is Williamson based from the tube line up, 1/2 12AX7 input, 12AU7 LTP phase splitter, 12BH7 driver stage.

To get a schematic, find a generic williamson, pull the bottom off and start tracing the schema details.

dave

DrRick · 25th February 2010, 02:49 AM

Vista-Cruiser (Oldsmobile)

kevinkr · 25th February 2010, 04:22 PM

IMHO, nothing to do with Lee DeForest at all, Lee Laboratories is probably an obscure Chinese outfit. (Nothing at all came up on Google in a quick search.) The amplifier looks well put together on the outside..

juliovideo · 25th February 2010, 06:30 PM

Quote:

Originally Posted by kevinkr

IMHO, nothing to do with Lee DeForest at all, Lee Laboratories is probably an obscure Chinese outfit. (Nothing at all came up on Google in a quick search.) The amplifier looks well put together on the outside..

The amplifier is working well now ,............ This picture below was when arrived 4 weeks ago.

I do not think it's Chinese . ...

''''''''''''''''''''''''''''''''''''''

juliovideo · 25th February 2010, 06:36 PM

Quote:

Originally Posted by planet10

It could well be a production model with some upgrades... it looks the part.

No matter, i strongly suspect it is Williamson based from the tube line up, 1/2 12AX7 input, 12AU7 LTP phase splitter, 12BH7 driver stage.

To get a schematic, find a generic williamson, pull the bottom off and start tracing the schema details.

dave

Thank you very much ! , my friend "Martin" gave me this threads .........

Welcome to the most complete do it yourself guide on the D. T. N. Williamson tube amplifier.

http://www.clarisonus.com/Archives/A...0Amplifier.pdf

Consumer Audio Information

'''''''''''''''''''''''''''''''

kmtang · 25th February 2010, 06:39 PM

It seems made by Chinese factory from the way it is built and the components used.

Johnny

23rd February 2010, 04:14 AM	#1
juliovideo diyAudio Member Join Date: Jan 2009	Lee Laboratory - model 50 Cruiser Hi ; ........ I'm looking for the electrical schematic of this amplifier ,.................. thanks for your help. LEE De FOREST LABORATORY POWER AMPLIFIER http://www.leedeforest.org/awa.html Lee De Forest (August 26, 1873 – June 30, 1961) was an American inventor with over 180 patents to his credit. Lee De Forest http://en.wikipedia.org/wiki/Lee_De_Forest In the early 1920s, Western Electric researched both sound-on-film and sound-on-disc systems, aided by the purchase of Lee De Forest's Audion amplifier tube in 1913, and the development of the public address system and the condenser microphone in 1915. http://en.wikipedia.org/wiki/Vitaphone -------------------- Last edited by juliovideo; 23rd February 2010 at 04:22 AM.

24th February 2010, 10:28 PM	#5
planet10 frugal-phile(tm) diyAudio Moderator Join Date: Oct 2001 Location: Victoria, BC, NA, Sol III Blog Entries: 4	It could well be a production model with some upgrades... it looks the part. No matter, i strongly suspect it is Williamson based from the tube line up, 1/2 12AX7 input, 12AU7 LTP phase splitter, 12BH7 driver stage. To get a schematic, find a generic williamson, pull the bottom off and start tracing the schema details. dave __________________ community sites t-linespeakers.org, frugal-horn.com ........ commercial site planet10-HiFi p10-hifi forum here at diyA

25th February 2010, 02:49 AM	#6
DrRick diyAudio Member Join Date: Nov 2004 Location: New Jersey, US, Third Stone From The Sun	Vista-Cruiser (Oldsmobile) __________________ Peace, DrRick

25th February 2010, 04:22 PM	#7
kevinkr diyAudio Moderator Join Date: Sep 2004 Location: Boston, Massachusetts Blog Entries: 6	IMHO, nothing to do with Lee DeForest at all, Lee Laboratories is probably an obscure Chinese outfit. (Nothing at all came up on Google in a quick search.) The amplifier looks well put together on the outside.. __________________ www.kta-hifi.net

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

24th February 2010, 09:39 PM	#2
juliovideo diyAudio Member Join Date: Jan 2009	Any ideas ? ;...............Does anyone know anything about this amplifier? Thanks ----------------------

24th February 2010, 10:00 PM	#3
jlsem diyAudio Member Join Date: Jun 2003 Location: Dallas,TX	I can't help you with a schematic but I don't think Lee DeForest had anything to do with it. It looks like a one-off to me. John

24th February 2010, 10:07 PM	#4
DigitalJunkie diyAudio Member Join Date: Apr 2003 Location: Portland,Oregon Blog Entries: 4	I think I'd have to agree,It looks like a one-off.. Those caps are the newish style (granted,they could have been replaced at some point),and that "Cruiser" emblem reminds me of the emblems on older cars.I have one for a Chevelle in that exact font/style.

25th February 2010, 06:39 PM	#10
kmtang diyAudio Member Join Date: Nov 2004 Location: Vancouver	It seems made by Chinese factory from the way it is built and the components used. Johnny

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Jaehong Lee OTL	astouffer	Tubes / Valves	11	6th February 2010 06:00 AM
FS: Four EPI 8" Woofers - 2ohm model - $50 obo for all	walker112	Swap Meet	0	4th February 2009 04:43 PM
I need help of Lee Basham	rafelo	Solid State	1	19th June 2007 01:13 PM
Heathkit Schematic model AA-50 needed	Sir Trefor	Tubes / Valves	5	9th June 2007 01:51 AM
Does anybody know Lee Jackson	vytas	Solid State	0	5th February 2004 09:30 AM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read