Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Speaker Connection to Ground in 42-350
#1

OK, this is embarrassing. I'm almost finished rewiring and recapping a 42-350 that I started before Christmas. I took notes and drew pictures where the wires went, but unfortunately left the speaker wires off of the drawings. I probably figured it would be easy to reconnect them to the secondary leads from the output transformer, so I didn't bother to draw them in.

That was true with the one of the leads, but the output transformer has only one secondary lead. The other is soldered right to the transformer frame and apparently grounds to the chassis through the rivets.

My question is: can I ground the other side of the speaker to any convenient ground, regardless of where it went originally? The two speaker leads are the same length and are tied together about 3 inches from the end, so they evidently terminated near one another. The most convenient ground terminals are the center pin of the rectifier tube socket and the ground pin of the Bakelite condenser.

What do you guys think? Will any convenient ground do? Is there any reference to where this wire went originally?

Lesson learned. Never again take apart a radio without using the digital camera!

John Honeycutt
#2

Hope I'm not speaking out of line since I haven't seen this particular set, but going to assume that it shouldn't be too critical where you connect the wire since it's an audio return path. Lead dress can make a difference in other stages but I'm thinking for this you should be fine at any convenient ground point.




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
40-150 General questions
Of course! Even the chassis will have a part number. Thanks for your replies. And yes, I do have some serious rewiring t...Kevin_D — 12:14 PM
Philco Model 512 Mandarin Red Metal Cone Speaker - Help
MrFixr55- Thanks for all the good information. I know that the "motor" is open. Since this is my first ventur...jjfritz5528 — 09:22 PM
Howard Car Radio Model HA6 1936
Hi Everyone,  A friend has given me a Howard Model HA6 car radio - a set which has an interesting history , the more ...Antipodal — 09:17 PM
GE Model P-975F
Have looked at info on other sites. What is funny the wire that runs to the ext ant and ground connections are different...David — 05:36 PM
E H Scott Allwave 15
Hello Philconut. This thread is over twelve years old. I am sorry to inform you that Michael Dennis passed away severa...GarySP — 05:24 PM
E H Scott Allwave 15
I've just taken one of these sets in for restoration. What a behemoth! After re-stuffing all the wee capacitor cans &...Philconut — 04:34 PM
Rare zenith 6s137 restore
All of these restorations are two projects. The chassis and the cabinet. You're done with the chassis. I would keep ...RodB — 01:29 PM
PT-6 antenna connections
Thanks. The transformer tested per your numbers. Checked the wiring and it appears to be good. I’ll move on to checking ...bridkarl — 12:37 PM
GE Model P-975F
There are 2 of these on ePay and several pics on Radiomuseum.  Although the front looks like a very popular Hong Kong ra...MrFixr55 — 09:26 AM
Rare zenith 6s137 restore
Hi Fred, I get things to work, but what you, Russ, RadioSvit and many others on the Phorum do with cabinet and chassis...MrFixr55 — 09:02 AM

[-]
Who's Online
There are currently 2307 online users. [Complete List]
» 1 Member(s) | 2306 Guest(s)
Avatar

>