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

Volume control, Model 16
#1

I'm restoring a Model 16 and need a good volume control / switch. This Code 125 model has a 2 meg pot with two wipers(!) Apparently one of the wipers goes to the bass compensation resistor / cap, and it appears to be inverse to the main wiper. This is probably a well discussed issue -- anyone have a good solution? Thanks!!!

David Sligar
#2

Well, gotta get a capacitor in line with the output stage, and the more you cut it off with lower values, more treble. Larger coupling favors bass response to a point. If the tone pot is partially open. might be the case.
#3

Anybody know where to get a replacement pot? Only other thing I can think of would be to use a dual pot -- 1 meg would probably be OK -- with a switch.

Any other ideas?

Thanks!
#4

Contact Mark Oppat at the web address below.

http://oldradioparts.net/controls.html
#5

You could use one that is tapped. It acts as a loudness control. Give a bit bass boost at low volume.
Terry




Users browsing this thread:
[-]
Recent Posts
Rogers Majestic R-646
Vlad; I was just reminded of something else, I'm not sure why but many Rogers built sets do seem to have open primari...Arran — 04:40 PM
Rogers Majestic R-646
Thanks RpdB I don't think there's much difference with interstage transformers of different models other than dimersion...Vlad95 — 03:27 PM
Rogers Majestic R-646
Vlad; I looks like your set has the same problem that mine did, both a bad output transformer, and a bad audio inters...Arran — 03:21 PM
Rogers Majestic R-646
Ouch! Not often the secondary takes a hit. Wish there was a better solution. I have a good interstage transformer but it...RodB — 02:59 PM
Rogers Majestic R-646
By the way, the bypass you suggested is a rare solution in some circuits. For example, this schematics solution is used...Vlad95 — 01:43 PM
Rogers Majestic R-646
No, you are wrong, because you did not know the details. Unfortunately, only ONE winding out of six is intact in both t...Vlad95 — 01:14 PM
Rogers Majestic R-646
The output 45s are still in push-pull because the transformer secondary winding is still in the grid circuit providing o...RodB — 11:52 AM
Rogers Majestic R-646
Thanks RodB for the help. But this is not a real solution to this situation, not even a temporary one. Because the firs...Vlad95 — 11:34 AM
Philco Model 16 wiring question
I was going to check the voltages as you suggested and hooked it up to my dim bulb. It appears I have a short. The bul...bobclausen — 10:34 AM
Rogers Majestic R-646
You can bypass the interstage transformer by disconnecting the primary, connect a load resistor of about 10k - 20k to th...RodB — 09:40 AM

[-]
Who's Online
There are currently 996 online users. [Complete List]
» 2 Member(s) | 994 Guest(s)
AvatarAvatar

>