Posts: 4,901
Threads: 54
Joined: Sep 2008
City: Sandwick, BC, CA
The replacement speaker, with the original chassis, is a Utah speaker of similar vintage to the original, early to mid 1930s, it is a field coil speaker, and ironically used in other makes and models of cathedrals, and tombstones. I remember mentioning to Bob on Y.T., after he got this set that not having the Philco pie pan style speaker wasn't a total loss as the replacement probably sounded better. I agree, model 90 chassis are common enough that it isn't worth dealing with a badly hacked up one, especially the mid production ones with the single ended #47, looks like the "Hamster" added a 6.3 volt filament transformer to power the octals he added. The pie pan replacement he has looks like it was paired with a model 20 chassis, those have that big stud, and nut, holding the pole piece in place, but I think the output transformer should still work with P-P #47s or #47s.
Regards
Arran
Messages In This Thread
RE: Philco 90 restoration - by Arran - 09-19-2021, 02:02 AM
Users browsing this thread: 3 Guest(s)
|
|
Recent Posts
|
|
PT-6 finished!!
|
| Actually the Loctal tube series, with number beginning with "14" are 12.6 volt tubes, at 150 ma, I'm not sure ...Arran — 02:14 AM |
|
philco predicta
|
| The model is the holiday without UHF It has no sound and I don't have an oscilloscope or signal generator.cgl18 — 08:51 PM |
|
Philco model 38 code 121 not receiving signal.
|
| I will definitely check my lead length and wire dressing. Thanks for the ideas.Stormlord5500 — 08:06 PM |
|
Philco model 38 code 121 not receiving signal.
|
| Do make sure that you twist the 3 wires from the chassis to the transformer, and dress away from tubes, especially audio...MrFixr55 — 07:38 PM |
|
Philco model 38 code 121 not receiving signal.
|
| The cone unfortunately got damaged when I removed it. The glue that held the cone to the basket was sloppily applied and...Stormlord5500 — 07:12 PM |
|
Philco model 38 code 121 not receiving signal.
|
| So what was wrong with the original speaker? Was the cone damaged? Unless it's totally hopeless I would put it aside as ...Arran — 05:31 PM |
|
My collection presentation
|
| There is an article on my site that introduces the first portable radios in my collection. I have only provided a link t...Vlad95 — 01:17 PM |
|
Electrolytic restuffing/internals
|
| Bridkarl
This specific cap you have is the easiset type to restuff.
I usually cut it at the upper border of the depr...morzh — 11:35 AM |
|
philco predicta
|
| Hi CGL18,
First off, welcome to the Philco Phorum. I have not worked on a TV for a while but here are some givens:
...MrFixr55 — 08:22 AM |
|
Another amp build - here I go again!
|
| Sweet!
I actually have a Dynaco Mark 4 that I had been running with 6L6s with no mods. Seemed to my 14-year-old head a...MrFixr55 — 12:57 AM |
|
Who's Online
|
| There are currently no members online. |
|
 
|
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
