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

Advice on output transformer
#1

  I'am working on an philco model 14lzx it has two speakers H-7 & K12 it has 2-42 push/pull output tubes.
Would a hammond 125D ot trans. work for this? oops wrong thread!! Hope moderator can move.
#2

Moved Icon_smile

You need to match a 16,000 ohm primary impedance to two 1.25 ohm voice coils connected in parallel - which means 0.625 ohm! So you will probably just have to experiment with the output taps, and use the two that produce the loudest sound from your speakers.

The 125D is rated at 10 watts output, which is probably adequate for your 14LZX.

--
Ron Ramirez
Ferdinand IN
#3

I think pins 1 and 2 for the load will work.
It gives 134 ratio at needed 160. Not ideal but close.
#4

Thanks Ron and morz.




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco 41-608 changer coupler
3D-printing...short of machining, of course. Or molding.morzh — 05:20 PM
Philco 41-608 changer coupler
Thanks, Morzh. That solves the issue of the rubber pieces. Now, I need to find a way to replicate the pot metal piec...alangard — 05:07 PM
12' Philco
If it is 12', either Kareem or Andre would have to jump pretty high to look at the front panel. Kareem would have an e...morzh — 01:48 PM
12' Philco
And here's a story about the tires on the truck. Same "no-stoop" guy must have installed these! Take care a...GarySP — 01:17 PM
Hickok AC51 tube tester
I think they have only shown the secondaries of the transformer. Two of them feed the rectifiers' filaments.morzh — 12:58 PM
IF can wire size and Rubber mounts?
Arran If the wire inside cans is the gauges you mentioned, the sole reason for that would be mechanical, to stiffen t...morzh — 12:56 PM
12' Philco
Rod, Yes, I know, but the Giant Philco is not around anymore either, so I go by whoever was alive fairly recently. H...morzh — 12:54 PM
Hickok AC51 tube tester
Absolutely no one is going to reverse engineer that circuit. Even the iron core is missing.RodB — 10:37 AM
IF can wire size and Rubber mounts?
Thanks to both members for your help regarding wire and tuner mtg supports. regards--Johngeorgetownjohn — 09:33 AM
Hickok AC51 tube tester
Note that no power cord, power switch, or power transformer switch are shown. That (along with my experience with full s...DaleHCook — 07:09 AM

[-]
Who's Online
There are currently 5235 online users. [Complete List]
» 1 Member(s) | 5234 Guest(s)
Avatar

>