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The PHILCO Phorum
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model 20 hum (detector circuit?)
Alan Douglas
Silent Key
Posts: 181
Threads: 0
Joined: Mar 2008
City: Pocasset, MA
#11
10-24-2015, 06:23 PM
I believe that some hum was considered normal back then. It gave the owner an illusion of bass response, and let him know the set was running.
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Messages In This Thread
model 20 hum (detector circuit?)
- by
Tubesforme
- 10-19-2015, 12:11 PM
RE: model 20 hum (detector circuit?)
- by
Steve Davis
- 10-19-2015, 02:40 PM
RE: model 20 hum (detector circuit?)
- by
OZ4
- 10-19-2015, 05:23 PM
RE: model 20 hum (detector circuit?)
- by
Steve Davis
- 10-19-2015, 06:03 PM
RE: model 20 hum (detector circuit?)
- by
OZ4
- 10-20-2015, 09:01 AM
RE: model 20 hum (detector circuit?)
- by
mikethedruid
- 10-24-2015, 06:04 PM
RE: model 20 hum (detector circuit?)
- by
Tubesforme
- 10-24-2015, 08:24 PM
RE: model 20 hum (detector circuit?)
- by
Tubesforme
- 10-27-2015, 02:58 PM
RE: model 20 hum (detector circuit?)
- by
Alan Douglas
- 10-24-2015, 06:23 PM
RE: model 20 hum (detector circuit?)
- by
mikethedruid
- 10-24-2015, 10:48 PM
RE: model 20 hum (detector circuit?)
- by
Tubesforme
- 10-29-2015, 05:21 PM
RE: model 20 hum (detector circuit?)
- by
Steve Davis
- 10-24-2015, 11:01 PM
RE: model 20 hum (detector circuit?)
- by
Tubesforme
- 10-24-2015, 11:46 PM
RE: model 20 hum (detector circuit?)
- by
Tubesforme
- 10-28-2015, 07:14 PM
RE: model 20 hum (detector circuit?)
- by
Tubesforme
- 10-30-2015, 06:30 PM
RE: model 20 hum (detector circuit?)
- by
OZ4
- 10-25-2015, 09:57 AM
RE: model 20 hum (detector circuit?)
- by
Tubesforme
- 10-25-2015, 11:40 AM
RE: model 20 hum (detector circuit?)
- by
OZ4
- 10-25-2015, 10:39 AM
RE: model 20 hum (detector circuit?)
- by
Kenneth F. Besso Jr.
- 10-25-2015, 07:01 PM
RE: model 20 hum (detector circuit?)
- by
morzh
- 10-25-2015, 10:08 PM
RE: model 20 hum (detector circuit?)
- by
Steve Davis
- 10-26-2015, 07:38 AM
RE: model 20 hum (detector circuit?)
- by
OZ4
- 10-26-2015, 09:18 AM
RE: model 20 hum (detector circuit?)
- by
Tubesforme
- 10-26-2015, 11:14 PM
RE: model 20 hum (detector circuit?)
- by
OZ4
- 10-26-2015, 09:34 AM
RE: model 20 hum (detector circuit?)
- by
OZ4
- 10-26-2015, 10:24 AM
RE: model 20 hum (detector circuit?)
- by
Tubesforme
- 10-26-2015, 11:12 PM
RE: model 20 hum (detector circuit?)
- by
OZ4
- 10-27-2015, 07:43 PM
RE: model 20 hum (detector circuit?)
- by
Tubesforme
- 10-27-2015, 10:38 PM
RE: model 20 hum (detector circuit?)
- by
Steve Davis
- 10-27-2015, 11:25 PM
RE: model 20 hum (detector circuit?)
- by
Tubesforme
- 10-28-2015, 12:12 PM
RE: model 20 hum (detector circuit?)
- by
Ron Ramirez
- 10-28-2015, 01:34 PM
RE: model 20 hum (detector circuit?)
- by
Tubesforme
- 10-28-2015, 07:07 PM
RE: model 20 hum (detector circuit?)
- by
OZ4
- 10-28-2015, 10:52 AM
RE: model 20 hum (detector circuit?)
- by
Tubesforme
- 10-28-2015, 12:08 PM
RE: model 20 hum (detector circuit?)
- by
Tubesforme
- 10-29-2015, 06:50 PM
RE: model 20 hum (detector circuit?)
- by
OZ4
- 10-28-2015, 02:36 PM
RE: model 20 hum (detector circuit?)
- by
Tubesforme
- 10-28-2015, 07:03 PM
RE: model 20 hum (detector circuit?)
- by
Ron Ramirez
- 10-28-2015, 08:10 PM
RE: model 20 hum (detector circuit?)
- by
radiohenry
- 10-29-2015, 06:31 PM
RE: model 20 hum (detector circuit?)
- by
Tubesforme
- 10-29-2015, 06:44 PM
RE: model 20 hum (detector circuit?)
- by
LASJayhawk
- 10-29-2015, 06:57 PM
RE: model 20 hum (detector circuit?)
- by
Tubesforme
- 10-29-2015, 09:10 PM
RE: model 20 hum (detector circuit?)
- by
Tubesforme
- 10-30-2015, 06:21 PM
RE: model 20 hum (detector circuit?)
- by
LASJayhawk
- 10-29-2015, 09:36 PM
RE: model 20 hum (detector circuit?)
- by
Tubesforme
- 10-30-2015, 12:28 PM
RE: model 20 hum (detector circuit?)
- by
LASJayhawk
- 10-30-2015, 02:29 PM
RE: model 20 hum (detector circuit?)
- by
Tubesforme
- 10-30-2015, 02:34 PM
RE: model 20 hum (detector circuit?)
- by
klondike98
- 10-30-2015, 03:24 PM
RE: model 20 hum (detector circuit?)
- by
OZ4
- 10-30-2015, 05:13 PM
RE: model 20 hum (detector circuit?)
- by
Tubesforme
- 10-30-2015, 06:04 PM
RE: model 20 hum (detector circuit?)
- by
OZ4
- 10-31-2015, 09:40 AM
RE: model 20 hum (detector circuit?)
- by
Tubesforme
- 10-31-2015, 01:06 PM
RE: model 20 hum (detector circuit?)
- by
Ron Ramirez
- 11-08-2015, 09:28 PM
RE: model 20 hum (detector circuit?)
- by
Tubesforme
- 11-09-2015, 07:11 PM
RE: Low continual hum in model 21
- by
Steve Davis
- 10-23-2015, 09:34 PM
RE: Low continual hum in model 21
- by
Tubesforme
- 10-23-2015, 10:19 PM
RE: Low continual hum in model 21
- by
Steve Davis
- 10-23-2015, 11:01 PM
RE: model 20 hum (detector circuit?)
- by
Tubesforme
- 10-24-2015, 05:50 PM
Need correct voltages for det and af model 20
- by
Tubesforme
- 11-07-2015, 04:54 PM
RE: Need correct voltages for det and af model 20
- by
morzh
- 11-08-2015, 11:09 AM
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