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

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

Philco 38-2 Low Volume
#1

Hello 

The volume on my 38-2 seems low. I need to turn it up about half way to get normal volume. The data sheet for the 6F6 tube using PP Class AB (Pentode) Fixed Bias shows max 250 volts for the screen, 375 max for the plate and -16 min for the grid. My plates are 220 volts, screens 230 volts and grids -13.5 volts. Is the grid voltage too high? Looking at the schematic I can see why the screens are higher but should they be? Schematic https://philcoradio.com/library/download...l.%202.pdf

Thank you,
Dan


Messages In This Thread
Philco 38-2 Low Volume - by dconant - 11-09-2024, 02:27 PM
RE: Philco 38-2 Low Volume - by morzh - 11-09-2024, 03:15 PM
RE: Philco 38-2 Low Volume - by MrFixr55 - 11-09-2024, 10:27 PM
RE: Philco 38-2 Low Volume - by RodB - 11-10-2024, 11:44 AM
RE: Philco 38-2 Low Volume - by dconant - 11-10-2024, 01:23 PM
RE: Philco 38-2 Low Volume - by dconant - 11-10-2024, 02:39 PM
RE: Philco 38-2 Low Volume - by morzh - 11-10-2024, 03:25 PM
RE: Philco 38-2 Low Volume - by MrFixr55 - 11-10-2024, 06:31 PM
RE: Philco 38-2 Low Volume - by RodB - 11-10-2024, 06:52 PM
RE: Philco 38-2 Low Volume - by morzh - 11-10-2024, 07:16 PM
RE: Philco 38-2 Low Volume - by dconant - 11-11-2024, 12:05 PM
RE: Philco 38-2 Low Volume - by RodB - 11-11-2024, 01:17 PM
RE: Philco 38-2 Low Volume - by dconant - 11-11-2024, 02:06 PM
RE: Philco 38-2 Low Volume - by dconant - 11-11-2024, 02:14 PM
RE: Philco 38-2 Low Volume - by RodB - 11-11-2024, 02:36 PM
RE: Philco 38-2 Low Volume - by dconant - 11-11-2024, 03:50 PM
RE: Philco 38-2 Low Volume - by dconant - 11-11-2024, 04:58 PM
RE: Philco 38-2 Low Volume - by RodB - 11-11-2024, 05:20 PM
RE: Philco 38-2 Low Volume - by RodB - 11-11-2024, 05:38 PM
RE: Philco 38-2 Low Volume - by dconant - 11-11-2024, 06:23 PM
RE: Philco 38-2 Low Volume - by RodB - 11-11-2024, 11:15 PM
RE: Philco 38-2 Low Volume - by dconant - 11-12-2024, 08:51 AM
RE: Philco 38-2 Low Volume - by RodB - 11-12-2024, 10:53 AM
RE: Philco 38-2 Low Volume - by morzh - 11-12-2024, 11:02 AM
RE: Philco 38-2 Low Volume - by dconant - 11-12-2024, 11:16 AM
RE: Philco 38-2 Low Volume - by morzh - 11-12-2024, 11:22 AM
RE: Philco 38-2 Low Volume - by RodB - 11-12-2024, 11:43 AM
RE: Philco 38-2 Low Volume - by morzh - 11-12-2024, 11:52 AM
RE: Philco 38-2 Low Volume - by dconant - 11-12-2024, 11:57 AM
RE: Philco 38-2 Low Volume - by morzh - 11-12-2024, 12:02 PM
RE: Philco 38-2 Low Volume - by dconant - 11-12-2024, 12:08 PM
RE: Philco 38-2 Low Volume - by MrFixr55 - 11-12-2024, 12:27 PM
RE: Philco 38-2 Low Volume - by morzh - 11-12-2024, 12:42 PM
RE: Philco 38-2 Low Volume - by dconant - 11-12-2024, 02:07 PM
RE: Philco 38-2 Low Volume - by morzh - 11-12-2024, 02:25 PM
RE: Philco 38-2 Low Volume - by dconant - 11-12-2024, 02:57 PM
RE: Philco 38-2 Low Volume - by MrFixr55 - 11-12-2024, 02:57 PM
RE: Philco 38-2 Low Volume - by MrFixr55 - 11-12-2024, 04:24 PM
RE: Philco 38-2 Low Volume - by dconant - 11-12-2024, 04:50 PM
RE: Philco 38-2 Low Volume - by MrFixr55 - 11-12-2024, 05:21 PM
RE: Philco 38-2 Low Volume - by dconant - 11-12-2024, 06:04 PM
RE: Philco 38-2 Low Volume - by dconant - 11-13-2024, 04:08 PM
RE: Philco 38-2 Low Volume - by morzh - 11-13-2024, 04:37 PM
RE: Philco 38-2 Low Volume - by dconant - 11-13-2024, 04:42 PM
RE: Philco 38-2 Low Volume - by morzh - 11-13-2024, 04:52 PM
RE: Philco 38-2 Low Volume - by dconant - 11-13-2024, 04:56 PM
RE: Philco 38-2 Low Volume - by morzh - 11-13-2024, 05:22 PM
RE: Philco 38-2 Low Volume - by dconant - 11-13-2024, 06:03 PM
RE: Philco 38-2 Low Volume - by MrFixr55 - 11-13-2024, 06:51 PM
RE: Philco 38-2 Low Volume - by MrFixr55 - 11-13-2024, 07:00 PM
RE: Philco 38-2 Low Volume - by dconant - 11-13-2024, 07:28 PM
RE: Philco 38-2 Low Volume - by morzh - 11-13-2024, 08:25 PM
RE: Philco 38-2 Low Volume - by dconant - 11-14-2024, 08:21 AM
RE: Philco 38-2 Low Volume - by dconant - 11-14-2024, 03:57 PM
RE: Philco 38-2 Low Volume - by morzh - 11-14-2024, 04:06 PM
RE: Philco 38-2 Low Volume - by dconant - 11-14-2024, 04:28 PM
RE: Philco 38-2 Low Volume - by dconant - 11-14-2024, 07:35 PM
RE: Philco 38-2 Low Volume - by morzh - 11-14-2024, 07:39 PM
RE: Philco 38-2 Low Volume - by dconant - 11-15-2024, 09:57 AM
RE: Philco 38-2 Low Volume - by morzh - 11-15-2024, 10:02 AM
RE: Philco 38-2 Low Volume - by RodB - 11-15-2024, 11:09 AM
RE: Philco 38-2 Low Volume - by dconant - 11-15-2024, 11:47 AM
RE: Philco 38-2 Low Volume - by RodB - 11-15-2024, 11:55 AM
RE: Philco 38-2 Low Volume - by dconant - 11-15-2024, 12:44 PM
RE: Philco 38-2 Low Volume - by dconant - 11-15-2024, 12:50 PM
RE: Philco 38-2 Low Volume - by morzh - 11-15-2024, 01:42 PM
RE: Philco 38-2 Low Volume - by RodB - 11-15-2024, 03:24 PM
RE: Philco 38-2 Low Volume - by morzh - 11-15-2024, 04:19 PM
RE: Philco 38-2 Low Volume - by dconant - 11-15-2024, 05:36 PM
RE: Philco 38-2 Low Volume - by MrFixr55 - 11-15-2024, 07:31 PM
RE: Philco 38-2 Low Volume - by RodB - 11-15-2024, 08:06 PM
RE: Philco 38-2 Low Volume - by dconant - 11-16-2024, 08:36 AM
RE: Philco 38-2 Low Volume - by radiorich - 11-16-2024, 12:12 PM
RE: Philco 38-2 Low Volume - by dconant - 11-17-2024, 10:55 AM
RE: Philco 38-2 Low Volume - by dconant - 11-21-2024, 11:03 AM
RE: Philco 38-2 Low Volume - by dconant - 12-04-2024, 08:41 AM



Users browsing this thread: 3 Guest(s)
[-]
Recent Posts
B&K 1077B no video
Hello Tim, I would if it's a leaky Capacitor So are all 3 of those B- voltages low then ? Sincerely Richardradiorich — 01:55 AM
B&K 1077B no video
I found a schematic and think I have the problem traced down to the minus power supply. I have very low voltages that go...TV MAN — 12:41 AM
RCA 15X
I'd try replacing the bulb first and if that doesn't do it, then change the 35Z5 and see if the problem goes away.NostalgiaRadioTime — 12:28 AM
B&K 1077B no video
Hello Tim, I have that exact unit in my shop too plus a Sencore unit there are times I like one or other !!. Sincerely...radiorich — 11:07 PM
RCA 15X
Everthing goes at once, maybe it's the cold weather, I have had 2 dial strings break and no my little RCA is having dial...Paul Philco322 — 10:26 PM
Philco 91 Schematic
Hi Dan, I can't explain this specific resistor but I have seen the use of a switch to apply B+ voltage to screen gri...RodB — 09:36 PM
6TPZ and 5TPO Radio Help
I suspect it's been repaired before. And I suspect whoever repaired it, wanted to re-use old transistors' pin stubs in o...morzh — 09:24 PM
B&K 1077B no video
Thanks Rich! I'll take a look and see what he has. I know there's more modern equipment to be had, but this one I know a...TV MAN — 09:11 PM
B&K 1077B no video
Hello Tim, Here is a link to restoration of one on Phil's old radios site ! Sincerely Richard bk1077bradiorich — 09:01 PM
6TPZ and 5TPO Radio Help
I'm a little befuddled on this one. Should X5 and X4 be tied together like this?  It looks like someone added this at so...R3Sons — 07:33 PM

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

>