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Majestic
12/7/2007 1:12:52 PMMark K
Is it possible to post pictures here?




12/7/2007 3:42:04 PMDennis Wess
uh................yes
12/7/2007 4:19:47 PMMark K
Uh..............thanks :~) I guess I answered my own question.
12/7/2007 5:04:02 PMLou
Nice Majestic

Working??????


:Uh..............thanks :~) I guess I answered my own question.

12/7/2007 6:38:14 PMMark K
Hey Lou, it works but hums, so some caps are in order, the turntable will need a little tinkering, but I got sound through the needle. It has a neat little button under the tone arm that turns off the radio sound and turns on the phono, they use the same chassis for amplification. I'm hunting down knobs, but they are pretty fancy, this must have been an expensive set in it's day.
Mark
12/7/2007 9:48:26 PMThomas Dermody
Very nice. I couldn't find the 150 on this site, but if it's like the 160, it probably uses paper caps in the filter section (note the values). With those values some hum is normal, and those caps don't deteriorate capacitive-wise. They only get leaky and short out, which could possibly cause hum. Otherwise, if they are not leaky, then the radio always had that hum. Those radios did tend to hum a bit more due to the small value caps. Note in the schematic of the 160 the capacitor labeled as E. If your set has one of those across a choke, omit it when re-capping the set (unless you use all original values for the filters). When you re-cap, you can use electrolytics. Go with higher values, around 10 to 16 MFD. Hum will be greatly reduced. I had to build an entirely new power supply for my Majestic 180 (separate power supply). I used 16 and 30 MFD units, and now the set has almost no hum. It's great. Your speaker is a bit different than mine, but if it uses the rubberized cloth surround on the cone, you can greatly improve the bass response by replacing the hardened surround with new rubberized cloth or thin suede.

T.

12/7/2007 10:46:23 PMMark K
Thanks Thomas, it is listed under "Grigsby Grunow Co" "Castlewood" not Majestic. It is a 150 chassis. Here is the link

http://www.nostalgiaair.org/Resources/view.asp?FN=\M0043929.pdf

12/8/2007 12:57:59 AMThomas Dermody
Ah. Yes. I looked under Grigsby Grunow (that's where mine is found, too), but didn't know that it was under a different name.

Those filter caps are most likely electrolytic, and should definitely be changed if they are not filtering properly. Let me know how the radio sounds when you are done.

T.



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