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

Resistors used in Model 20
#14

Thanx for all of the advice, folks. I did, in fact, recap the big can on my own 20 a few years ago; it was exactly as you said. I had to wait for Ms. Fixr to be gone for the day before using the oven to gut the can. She would not be happy with me putting radio parts in the oven, or even the kitchen (or even the house). Since my "customer" is not looking for accurate restoration, I will just cut the wires inside the cans and hang them on the chassis side. I DO hope that the original resistors are good, as the chassis is totally unmolested.

As for $100.00 71As, I will sell to anyone for $50 (only kidding). They actually sell for about $15 - $20 on ePay----Wait!! What the Heck!!!
2 for about $15-$20, but a bunch for between $35 and $70 apiece, and they don't seem to care if they are globes or STs, and more than $200 for a trio of Arcturus Blue 71As. No bids on any though, so maybe the price IS going up, but I don't know why.

I have a schematic for a DIY 71A SE Amp and there are several on the internet. There seems to be a following for "Single Ended" amps, especially those using the Western Electric 300B. There are some on the internet that claim that if you have a very efficient speaker, that 71As, even at 0.7W (700mW) sound "as sweet as a 300B" and nicer than a 45 or 2A3. In fact there is a circuit with switches to select a 300B vs a 71A as the installed output tube. Since I don't have the ears or money to tell the difference, I am not exactly running out to build one of these tomorrow.

"Do Justly, love Mercy and walk humbly with your God"- Micah 6:8
"Let us begin to do good"- St. Francis

Best Regards, 

MrFixr55


Messages In This Thread
Resistors used in Model 20 - by MrFixr55 - 09-26-2023, 10:18 PM
RE: Resistors used in Model 20 - by morzh - 09-26-2023, 11:59 PM
RE: Resistors used in Model 20 - by radiorich - 09-27-2023, 08:06 AM
RE: Resistors used in Model 20 - by MrFixr55 - 09-27-2023, 10:10 AM
RE: Resistors used in Model 20 - by morzh - 09-27-2023, 10:36 AM
RE: Resistors used in Model 20 - by Arran - 09-27-2023, 06:11 PM
RE: Resistors used in Model 20 - by morzh - 09-27-2023, 06:54 PM
RE: Resistors used in Model 20 - by Ron Ramirez - 09-27-2023, 07:20 PM
RE: Resistors used in Model 20 - by radiorich - 09-28-2023, 08:36 AM
RE: Resistors used in Model 20 - by morzh - 09-28-2023, 09:02 AM
RE: Resistors used in Model 20 - by GarySP - 09-28-2023, 02:19 PM
RE: Resistors used in Model 20 - by Ron Ramirez - 09-28-2023, 02:42 PM
RE: Resistors used in Model 20 - by morzh - 09-28-2023, 03:18 PM
RE: Resistors used in Model 20 - by MrFixr55 - 09-28-2023, 05:37 PM
RE: Resistors used in Model 20 - by morzh - 09-28-2023, 08:25 PM
RE: Resistors used in Model 20 - by MrFixr55 - 10-01-2023, 08:59 AM
RE: Resistors used in Model 20 - by Arran - 10-01-2023, 04:37 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
PT 6 chassis screws size???
Hello bridKarl, that sounds right or maybe 8/32 . Sincerely Richardradiorich — 01:00 AM
PT 6 chassis screws size???
Have this done except for missing chassis screws. It looks like 1 inch 6/32 sheet metal screw may work but can anyone s...bridkarl — 10:32 PM
Philco model 38 code 121 not receiving signal.
Hello Stormlord, Well done on rewinding that coil it turned fairly good for your first one. Sincerely Richardradiorich — 09:12 PM
Philco model 38 code 121 not receiving signal.
Well here it is. It ain't pretty, but hopefully it'll work. I checked it with my DMM on continuity and it keeps and r...Stormlord5500 — 08:56 PM
Philco 42-345 Restoration/Repair
Yes, 57 is an electrolytic cap that should be 12 mfd 400 volts according to the parts list from the Phorum library schem...RodB — 06:01 PM
Philco 42-345 Restoration/Repair
Looks like if I am reading it correctly it looks like the silver capacitor#57 that appears to be a replacement is of a l...osanders0311 — 05:09 PM
Philco model 38 code 121 not receiving signal.
Thanks Arran. Yeah this plastic is pretty thin. It's a little thinner than the original stuff. It kinda reminds me of p...Stormlord5500 — 04:37 PM
Testing a speaker and output transformer Trutone A2-G
The equivalent of one short turn is basically the same as that of a shorted load. If it is the primary's turn, then the ...morzh — 03:53 PM
Testing a speaker and output transformer Trutone A2-G
I've never had an output transformer become shorted, the failure mode is usually an open primary, or in a center tapped ...Arran — 03:52 PM
Philco model 38 code 121 not receiving signal.
As long as the plastic sheeting isn't too thick, I think that the thickness of photographic film would be just about rig...Arran — 03:19 PM

[-]
Who's Online
There are currently 723 online users. [Complete List]
» 1 Member(s) | 722 Guest(s)
Avatar

>