1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration

Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

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

Linear Mode
Philco 40-150 speaker "upgrade"
Chas
Senior Member
****
Posts: 715
Threads: 9
Joined: Apr 2018
City: S. Dartmouth State, Province, Country: MA
#4

10-06-2022, 10:56 AM
I am about to re-cone (in a couple of weeks) a 6" PM speaker of near identical design of spider...

The spider is a bit unusual as it is also paper and similar construction in that there is a steel frame that is adjustable. That spider has fallen apart into crumbs.

BTW, your F.C. speaker also has a hum bucking coil.. A PM speaker does not have this so if you have not noticed hum it maybe O.K. Mounted in the baffle the hum may become more noticeable. Increasing the condenser MF after the choke will be beneficial in lowering the residual hum.

I would suggest re-cone that speaker as it is fully adjustable, even the field coil can be removed for repairs...

It is a learned skill but beware of shortcuts...

GL

Chas
Pliny the younger
“nihil novum nihil varium nihil quod non semel spectasse sufficiat”
Find
« Next Oldest | Next Newest »
Thread Closed


Messages In This Thread
Philco 40-150 speaker "upgrade" - by petermorrone - 10-05-2022, 07:16 PM
RE: Philco 40-150 speaker "upgrade" - by MrFixr55 - 10-05-2022, 10:12 PM
RE: Philco 40-150 speaker "upgrade" - by Chas - 10-06-2022, 10:56 AM
RE: Philco 40-150 speaker "upgrade" - by Chas - 10-06-2022, 06:48 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco Model 38-7: what caps & resistors do fail typically?
Yep the dim bulb test is OK but I'd definitely replace all those electrolytics before I did it. Since those #47 conden...klondike98 — 09:18 PM
Philco 42-345 Restoration/Repair
The resistor is a 2.2 Meg, it was the last one I hadn't replaced. The broadcast is coming in after replacing it.osanders0311 — 09:09 PM
Philco 42-345 Restoration/Repair
What does the resistor measure? I think it should be 3.3 Meg. If the oscillator coil has continuity and the resistanc...RodB — 09:03 PM
Philco Model 38-7: what caps & resistors do fail typically?
Good idea to check the coils... then I'll get hold of an incadescent light bulb and see what happens when the unit is sw...Musaeum — 08:49 PM
Philco 42-345 Restoration/Repair
I have that same set, ain't too much shortwave I like anyway.....it is a good AM DX set. PaulPaul Philco322 — 08:32 PM
Philco Model 38-7: what caps & resistors do fail typically?
Welcome to the Phorum, Martin! Open a new thread in Philco Electronic Restoration when you begin working on your 38-7. ...GarySP — 08:28 PM
Philco Model 38-7: what caps & resistors do fail typically?
Welcome to the Phorum! :wave: Here's the schematic for that radio from our digital library: Something to do bef...klondike98 — 08:05 PM
Philco Model 38-7: what caps & resistors do fail typically?
Hi all, on vacation in Montreal,  a friend of mine showed me a Philco Model 38-7 console radio from the 30ies. Mechan...Musaeum — 07:21 PM
Part numbers to model cross
I looked thru the documents and did not see one. Might have missed it though.Jim Dutridge — 07:16 PM
Philco 42-345 Restoration/Repair
Please tell me this was it, I replaced resistor 27 and it's playing on the broadcast band. I am afraid to change the ban...osanders0311 — 06:12 PM

[-]
Who's Online
There are currently 1131 online users. [Complete List]
» 3 Member(s) | 1128 Guest(s)
AvatarAvatarAvatar

>
  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration