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

48-482
#1

OK I got a 48-482 on flea-bay. The seller said he thought the speaker had been changed (I'm guessing the 2 wire nuts in the speaker leads didn't look OEM) and it's obvious that the loop antenna is out of a much smaller set like a 42-250.

So the speaker has been replaced with a PM speaker and the 2 field coil lines are cut where they come out of the chassis. I have not pulled it apart to inspect the work done cuz I know I wont like it. Icon_lol

So, would anybody like to take a WAG as to a good starting value for a resistor to replace the speaker field? I'm assuming I need to get 1/2 way close, then get the chassis running, then adjust the resistance to get the correct bias on the audio tubes. Good plan or better idea?

Thanks, John

John
Las Vegas, NV USA
#2

Looks like 1100 ohms on the schematic on nostalgiaair. Doubt you will find a 1100 ohm resistor, so would recommend a 1200 ohm resistor at least 20 watts. Richard
#3

You haven't lived until you have restrung a dial cord on one of these.

John
Las Vegas, NV USA




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
New Philco Repair Bench
I am sure this is the archive, and not the Chuck's site.morzh — 09:50 PM
Made mistake & did not label connection
It's not like we are good friends with that wire and can tell it from other ptetty identical looking wires. Why'n't you...morzh — 09:49 PM
Made mistake & did not label connection
I'm not sure why that wire wasn't covered in the video. I'm pretty sure the 6A8 won't work until that pin is grounded. Y...RodB — 09:47 PM
Made mistake & did not label connection
You'll have to forgive me, I am not sure what you mean.  Can you explain what you are really saying.  If anyone does not...georgetownjohn — 08:05 PM
Made mistake & did not label connection
Those are details better left to the ones who know. Maybe you disconnected the wrong end of the wire.RodB — 06:22 PM
Made mistake & did not label connection
Maybe this is starting to make some sense in my hard head.  Is this why the wire in question was not in the great Ron Ra...georgetownjohn — 04:34 PM
Made mistake & did not label connection
I was correct with the 6A8 pin connection's, 7 and 8 are connected to ground as well as the tube shield (the broken line...RodB — 02:41 PM
Made mistake & did not label connection
What does the dotted line representing that surrounds the tube in the schematic?georgetownjohn — 02:17 PM
Made mistake & did not label connection
Hello John, I have been there either label got lost or was not labeled ! Sincerely Richardradiorich — 02:15 PM
Made mistake & did not label connection
Sorry, it is a Philco 37-640.  Does that help?--Johngeorgetownjohn — 02:14 PM

[-]
Who's Online
There are currently no members online.

>