"Looking at the entire July 1937 diagram, suggests the T10 transformer used was an "off the shelf" push-pull for both primary and secondary winding, but the primary side is wired together as a bigger single primary. I just wonder why…"
The Fine Things are Always Hand Made
Felix-A. Gravel's Discussions
McMurdo-Silver Masterpiece VI T10 Interstage Transformer Missing
Started this discussion. Last reply by David C. Poland on Wednesday. 1 Reply 0 Likes
Hi! My McMurdo-Silver Masterpiece 6 is currently being professionally restored and the project is going well except for one pretty big road block. The T10 interstage transformer in my unit is…Continue
7-knob Allwave 23 | Muffled Sound
Started this discussion. Last reply by Felix-A. Gravel Apr 29, 2024. 3 Replies 0 Likes
Hi,A gentleman from the Chicago area has reached out to me through Facebook because he is having issues with his Allwave 23. He bought it a couple years ago from a collector who had recapped it and…Continue
McMurdo-Silver MP6 Custom T10 Audio Interstage Transformer
Started this discussion. Last reply by Felix-A. Gravel Sep 29, 2023. 6 Replies 0 Likes
Hi there folks,About 1.5 year ago I took a little break in restoring my McMurdo-Silver Masterpiece VI because it is missing its T10 audio interstage transformer. Thanks to members of this forum, I…Continue
E.H. Scott FM Philarmonic parts needed - Tuning shaft & 15'' paper cone
Started this discussion. Last reply by Felix-A. Gravel Oct 10, 2022. 3 Replies 1 Like
Hi there, E.H. Scott peeps! My collection is growing, and last May I had the opportunity to purchase an FM Philarmonic from Mr. King. I bought this as a project for much, much later. See, my vision…Continue
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McMurdo-Silver Masterpiece VI T10 Interstage Transformer Missing
Hi! My McMurdo-Silver Masterpiece 6 is currently being professionally restored and the project is going well except for one pretty big road block. The T10 interstage transformer in my unit is missing, and it is quite unique in design. Yes, we have found a few transformers that will *work*, however there is always a big compromise in performance. On top of that, this radio being a very high-end model with a complete known pedigree from the day it left the factory (I am its 2nd owner!), I…See More
"Is there anyone near Sugar Grove, Il. willing to give this set a proper alignment? I could put the owner in touch with whomever volunteers."
"So the set might have been recapped, but if you don't follow the Scott alignment instructions, you will create problems like this. The Scott instructions are explicit for setting the selectivity control during alignment, and you have to pay…"
"First, this radio has adjustable band width. in the narrow setting, only low frequency audio comes through.
The variable fidelity control is labeled SELECTIVITY, the far right control.
Owner should start reading at page 8 of the…"
7-knob Allwave 23 | Muffled Sound
Hi,A gentleman from the Chicago area has reached out to me through Facebook because he is having issues with his Allwave 23. He bought it a couple years ago from a collector who had recapped it and it should theoretically be in good operating condition. It has two tweeters with the Westminster cabinet. The problem is that he can't get it to sound ''right''. He says the sound is muffled with too much bass, can't get any treble out of it (All About That Bass...).I first asked what kind of antenna…See More
"Said transformer is missing."
"could you just send the original transformer to get rewound? That way he should have all information he needs to create a new core?"
"Looking at your diagram on the top winding connect the joint of the bottom 100k resistor and transformer winding to the feedback network. On the bottom winding connect the joint of the top 100k resistor and transformer winding to the…"
"Felix,
I have two MPVIs......I just saw that the interstage transformer is on the amp chassis. I'll get to one of the amp chassis that I have, and get you the physical dimensions of the transformer. I don't know how hard the…"
"Good morning, Bob!
Just to make sure, is that what you had in mind? Might be a good avenue if you think it's going to function just as well as the original.
What value capacitor would you use?"
"Actually you can buy a new replacement of the shelf. As to which one depends on how the secondary winding is connected. If the two secondaries connect to a common point ie ground or negative supply then a standard one winding primary and…"
McMurdo-Silver MP6 Custom T10 Audio Interstage Transformer
Hi there folks,About 1.5 year ago I took a little break in restoring my McMurdo-Silver Masterpiece VI because it is missing its T10 audio interstage transformer. Thanks to members of this forum, I now have most of the specifications I need in order to find a sub. Its primary winding measures 1500ohms, each of the secondaries measure 4000 ohms, and the ratio between the primary and each secondary is about 1:2. Using this data, a friend of mine tried to wind a custom transformer from a random…See More
"Hi! I just wanted to update you on the tuning shaft, which I found thanks to Bill Liers. We met up in Kutztown, and I got to installing it yesterday. It's a small step in the restoration, but I'm happy to check it off the list. "
"Later AM sets had a support plate added behind the shaft, but the hole spacing and standoff height is the same. Yes, an AM one should work fine for this fellow. "
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