Videokarma.org

Go Back   Videokarma.org TV - Video - Vintage Television & Radio Forums > Antique Radio

Notices

We appreciate your help

in keeping this site going.
Reply
 
Thread Tools Display Modes
  #1  
Old 08-24-2013, 10:46 AM
omegaman omegaman is offline
VideoKarma Member
 
Join Date: Dec 2010
Location: Scottsdale, Az
Posts: 74
Zenith chassis 5808

I got this in from a friend who picked it up gratis during a home inspection, a common thing he says since he is there, with a truck, with the owner, doing an inspection, near the "must-get-rid-of-it" terminus, looking into everything and coming across these items



The radio seem to be intact but I have not pulled the chassis yet. I'll do a complete recap on it.


This Zenith has had its field coil speaker removed and the baffle replaced by, what I can only guess, to be speakers someone had on-hand or could get nearby (ie; RadioShack)

The speaker wire is just cut clean, no connector



The questions are:

Did they modify the radio circuit to replace the inductor with a big resistor to use this crossover setup?

or

Did they just showcase the radio and use it as a ha ha cool speaker?

The Yamaha woofer is an "instrument speaker", Do guitar speakers use crossovers and tweeters? or does this say Hi Fi application?

I am looking at a Zenith field coil speaker on the bay as a replacement speaker and wonder. It has the 5 pin plug like my 5 pin socket

IS A ZENITH SPEAKER CONNECTOR AND FIELD COIL AND SPEAKER KIND OF INTERCHANGABLE?
I don't have this speaker but was wondering if it might be a replacement
Attached Images
File Type: jpg P2120114.JPG (36.2 KB, 33 views)
File Type: jpg DSC02090.jpg (94.8 KB, 32 views)
File Type: jpg fcoil.jpg (76.1 KB, 32 views)
File Type: jpg DSC02088.jpg (80.2 KB, 32 views)

Last edited by omegaman; 08-24-2013 at 09:19 PM.
Reply With Quote
  #2  
Old 08-24-2013, 02:04 PM
marty59's Avatar
marty59 marty59 is offline
VideoKarma Member
 
Join Date: May 2008
Location: Arlington, Tx
Posts: 915
There would have been an output transformer mounted somewhere as it's part of the speaker assembly too. Only four of the pins are used.

I'd pull the chassis and see what has been done before going any further and a three amp fuse is really too high of a value for this set and should be mounted someplace safer.
Reply With Quote
  #3  
Old 08-24-2013, 02:14 PM
omegaman omegaman is offline
VideoKarma Member
 
Join Date: Dec 2010
Location: Scottsdale, Az
Posts: 74
Quote:
Originally Posted by marty59 View Post
There would have been an output transformer mounted somewhere as it's part of the speaker assembly too. Only four of the pins are used.
.
Is that the transformer mounted on that speaker in the picture

I'll pull the chassis and take pictures

I'll correct that 1940 fuse installation and go 2 amp

Last edited by omegaman; 08-24-2013 at 03:56 PM.
Reply With Quote
  #4  
Old 08-24-2013, 08:03 PM
dieseljeep dieseljeep is offline
VideoKarma Member
 
Join Date: Jul 2010
Posts: 7,562
Quote:
Originally Posted by omegaman View Post
Is that the transformer mounted on that speaker in the picture

I'll pull the chassis and take pictures

I'll correct that 1940 fuse installation and go 2 amp
Did the speaker in picture #3 come with the radio? If so, it looks like a P.M. type replacement speaker was used. It looks like the choke was mounted, where the output transformer should be mounted. The output transformer looks like it's behind the metal bracket mounted on the magnet housing. The original speaker should a 10" with a 1250 ohm field and a output transformer for a single 6F6 output.
Mount the fuse holder under the chassis. A 1.5 to 2 amp SB fuse should OK.
If the fuse should blow, you'll have to remove the chassis to investigate the cause anyway.
Reply With Quote
  #5  
Old 08-24-2013, 08:23 PM
omegaman omegaman is offline
VideoKarma Member
 
Join Date: Dec 2010
Location: Scottsdale, Az
Posts: 74
Did the speaker in picture #3 come with the radio? No. I was thinking of buying that speaker as a replacement. Seems not to be a match though

The original speaker should a 10" with a 1250 ohm field and a output transformer for a single 6F6 output. . That is good to know.

Mount the fuse holder under the chassis. A 1.5 to 2 amp SB fuse should OK. I promise, I'll get that squared away

Is it possible to get it working with this new speaker set up?

Last edited by omegaman; 08-24-2013 at 08:28 PM.
Reply With Quote
Audiokarma
  #6  
Old 08-24-2013, 09:01 PM
dieseljeep dieseljeep is offline
VideoKarma Member
 
Join Date: Jul 2010
Posts: 7,562
Quote:
Originally Posted by omegaman View Post
Did the speaker in picture #3 come with the radio? No. I was thinking of buying that speaker as a replacement. Seems not to be a match though

The original speaker should a 10" with a 1250 ohm field and a output transformer for a single 6F6 output. . That is good to know.

Mount the fuse holder under the chassis. A 1.5 to 2 amp SB fuse should OK. I promise, I'll get that squared away

Is it possible to get it working with this new speaker set up?
That speaker is a lot more promising than the setup you now have.
BTW, the speaker baffle looks like the original factory issue. It was removed and altered for the speakers installed. Also, the radio appears to be a model 8S463, ca1940.
Reply With Quote
  #7  
Old 08-24-2013, 09:14 PM
omegaman omegaman is offline
VideoKarma Member
 
Join Date: Dec 2010
Location: Scottsdale, Az
Posts: 74
Thanks for the model 8 S 463.

I got the schematic from Radio Museum and a look at what the original speaker looks like

I'm thinking the new speakers were never intended to go with the radio, that the unit was used as a speaker box

The eBay speaker I was interested in is for a Zenith 8S463 which does NOT have a 6F6, which asserts that the speaker would not be correct

Whats the best thing to do to get the system up and running? Find a correct replacement?

Last edited by omegaman; 08-25-2013 at 09:14 AM.
Reply With Quote
  #8  
Old 08-25-2013, 10:45 AM
dieseljeep dieseljeep is offline
VideoKarma Member
 
Join Date: Jul 2010
Posts: 7,562
Quote:
Originally Posted by omegaman View Post
Thanks for the model 8 S 463.

I got the schematic from Radio Museum and a look at what the original speaker looks like

I'm thinking the new speakers were never intended to go with the radio, that the unit was used as a speaker box

The eBay speaker I was interested in is for a Zenith 8S463 which does NOT have a 6F6, which asserts that the speaker would not be correct

Whats the best thing to do to get the system up and running? Find a correct replacement?
If the speaker shown is reasonable enough, it's a good start.
It looks to have a choke and an output transformer, plus a 5 pin plug.
The cabinet looks to be great condition, which for me is a plus.
Reply With Quote
  #9  
Old 08-26-2013, 09:56 AM
marty59's Avatar
marty59 marty59 is offline
VideoKarma Member
 
Join Date: May 2008
Location: Arlington, Tx
Posts: 915
8-S-463's are "fairly" common and with a little time I'd bet a speaker will show up. Here's what you need..

Try these sites for parts..

http://www.oldradioparts.com/

http://www.vintage-electronics.com/
Attached Images
File Type: jpg DSC00481.jpg (60.2 KB, 20 views)
Reply With Quote
  #10  
Old 08-26-2013, 06:56 PM
omegaman omegaman is offline
VideoKarma Member
 
Join Date: Dec 2010
Location: Scottsdale, Az
Posts: 74
Thanks for the info Marty
I have been here before, hunting a part, waiting for one to surface
I hate to put it aside but I am going to have to store it until I find a speaker
I still have to look under the chassis for capacitors and what not
Reply With Quote
Audiokarma
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 11:00 AM.



Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2026, Jelsoft Enterprises Ltd.
©Copyright 2012 VideoKarma.org, All rights reserved.