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 Post subject: Re: Philco amp re-build.
PostPosted: Sep Mon 18, 2017 9:05 pm 
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john8750 wrote:
Pbpix wrote:
john8750 wrote:
Why would that depress me?

Sound is pressing downward upon your hillbilly brain.




My brain was shot long ago. At about seven, on my grampas farm in New Mexico. He had a bull.

And....?
... what did you try to do with that bull? .... milk it?

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 Post subject: Re: Philco amp re-build.
PostPosted: Sep Mon 18, 2017 9:09 pm 
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Here is a Magnavox small console. It belongs to a friend who wants me to repair it. It has an am-fm stereo tuner and phono. We plugged it in and got a very loud roar. Volume had no effect.


Attachments:
magnavox.jpg
magnavox.jpg [ 119.88 KiB | Viewed 863 times ]

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 Post subject: Re: Philco amp re-build.
PostPosted: Sep Mon 18, 2017 9:09 pm 
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Hey John:
I just realized you already do have a single common vol control on these two amps.
Your mp3 player vol control ... it already connects to both channels equally.
So all you need to do is set each amp's vol control to max or something like that.
Then your Mp3 controls everything vol wise.
Image

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 Post subject: Re: Philco amp re-build.
PostPosted: Sep Mon 18, 2017 9:13 pm 
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john8750 wrote:
Here is a Magnavox small console. It belongs to a friend who wants me to repair it. It has an am-fm stereo tuner and phono. We plugged it in and got a very loud roar. Volume had no effect.

Replace all the e-caps.
Then test.
If you still have problems you may need to find and replace the other old paper/wax caps or whatever might be leaking.
That set looks like 60s or 70s so maybe the coupling caps are still ok... but check 'em.

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 Post subject: Re: Philco amp re-build.
PostPosted: Sep Mon 18, 2017 9:14 pm 
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No Peter. He wouldn't go for that, tried it. My Grampa also had a mule. Us kids would get mule rides.
Well, the bull didn't want to give bull rides. So I went and found a large slop bucket.

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 Post subject: Re: Philco amp re-build.
PostPosted: Sep Mon 18, 2017 9:16 pm 
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Pbpix wrote:
john8750 wrote:
Here is a Magnavox small console. It belongs to a friend who wants me to repair it. It has an am-fm stereo tuner and phono. We plugged it in and got a very loud roar. Volume had no effect.

Replace all the e-caps.
Then test.
If you still have problems you may need to find and replace the other old paper/wax caps or whatever might be leaking.
That set looks like 60s or 70s so maybe the coupling caps are still ok... but check 'em.



Thanks peter. Just what I was planning. He said his folks got it around 1968. So, you are correct again.

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 Post subject: Re: Philco amp re-build.
PostPosted: Sep Mon 18, 2017 9:18 pm 
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john8750 wrote:
No Peter. He wouldn't go for that, tried it. My Grampa also had a mule. Us kids would get mule rides.
Well, the bull didn't want to give bull rides. So I went and found a large slop bucket.

What do you do with a slop-bucket for a bull?
Were you trying to extract some of his fertility-samples to fill up the bucket?

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 Post subject: Re: Philco amp re-build.
PostPosted: Sep Mon 18, 2017 9:24 pm 
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Pbpix wrote:
Hey John:
I just realized you already do have a single common vol control on these two amps.
Your mp3 player vol control ... it already connects to both channels equally.
So all you need to do is set each amp's vol control to max or something like that.
Then your Mp3 controls everything vol wise.
Image



I don't know Peter. About 1/4 volume is loud. Not on the 6V6 and 5902, I need almost full volume
to set a good listening level. But, the speakers are different, so don't know about the sensitivity.
And I did some more listening today. I am telling you all that these little amps have a fair fidelity.
Seems to be a good match to my test speakers.

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 Post subject: Re: Philco amp re-build.
PostPosted: Sep Mon 18, 2017 9:35 pm 
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Pbpix wrote:
john8750 wrote:
No Peter. He wouldn't go for that, tried it. My Grampa also had a mule. Us kids would get mule rides.
Well, the bull didn't want to give bull rides. So I went and found a large slop bucket.

What do you do with a slop-bucket for a bull?
Were you trying to extract some of his fertility-samples to fill up the bucket?



No, Silly Peter. In the slop bucket there was a piece of wood. Well, grampa wanted me to nail it on the
fence inside where the bull was. Then he wanted me to paint it.

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 Post subject: Re: Philco amp re-build.
PostPosted: Sep Mon 18, 2017 10:20 pm 
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Go here and answer this question please.
viewtopic.php?f=12&t=327701

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 Post subject: Re: Philco amp re-build.
PostPosted: Sep Tue 19, 2017 7:01 am 
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The Philcos need knobs. For a 1/4 D type shaft. Any ideas about where to get them. MCM use to have a great selection.
Cant find them anymore.

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 Post subject: Re: Philco amp re-build.
PostPosted: Sep Tue 19, 2017 8:17 am 
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john8750 wrote:
The Philcos need knobs. For a 1/4 D type shaft. Any ideas about where to get them. MCM use to have a great selection.
Cant find them anymore.

I sent 3 with the amps... and I may hiave the other 3 here yet... not sure.
I also sent two face plates to go behind the knobs... right?

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 Post subject: Re: Philco amp re-build.
PostPosted: Sep Tue 19, 2017 8:53 am 
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Pbpix wrote:
john8750 wrote:
The Philcos need knobs. For a 1/4 D type shaft. Any ideas about where to get them. MCM use to have a great selection.
Cant find them anymore.

I sent 3 with the amps... and I may hiave the other 3 here yet... not sure.
I also sent two face plates to go behind the knobs... right?



Yes, I have the face plates. I also have the three knobs. In thinking about the completion, I wanted all knobs to match.

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 Post subject: Re: Philco amp re-build.
PostPosted: Sep Tue 19, 2017 1:56 pm 
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john8750 wrote:
Pbpix wrote:
john8750 wrote:
The Philcos need knobs. For a 1/4 D type shaft. Any ideas about where to get them. MCM use to have a great selection.
Cant find them anymore.

I sent 3 with the amps... and I may hiave the other 3 here yet... not sure.
I also sent two face plates to go behind the knobs... right?



Yes, I have the face plates. I also have the three knobs. In thinking about the completion, I wanted all knobs to match.

As I said I may still have those other 3 here

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 Post subject: Re: Philco amp re-build.
PostPosted: Sep Tue 19, 2017 6:49 pm 
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Peter- If you find them, please send to me. And please send more of that wire. Just the small size, is perfect.
I'm gonna mount them on a 'L' shaped main frame. It will have a power switch and pilot light. And a selector
switch for inputs, MP3/CD/FM tuner. Thinking about either a rotary sw, or a toggle.
Any ideas?

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 Post subject: Re: Philco amp re-build.
PostPosted: Sep Tue 19, 2017 6:59 pm 
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A rotary switch would be best, but it might be better to buy a premade three input switch unless you already have the parts on hand to build one or can get the parts relatively easily.

Also here's something to think about.

There are stereo volume control kits that have inputs on them which are selected by relays most which are remote controlled.

Perhaps one of those kits (uses a motorized volume control) would be a good way to do it and you also then have a single stereo volume control.


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 Post subject: Re: Philco amp re-build.
PostPosted: Sep Tue 19, 2017 7:15 pm 
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john8750 wrote:
Peter- If you find them, please send to me. And please send more of that wire. Just the small size, is perfect.
I'm gonna mount them on a 'L' shaped main frame. It will have a power switch and pilot light. And a selector
switch for inputs, MP3/CD/FM tuner. Thinking about either a rotary sw, or a toggle.
Any ideas?

I think I have them here.. I'll look around.
Sorry buddy.. I don't have any more of that cloth wire... I sent you ALL that I had... enjoy.

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 Post subject: Re: Philco amp re-build.
PostPosted: Sep Tue 19, 2017 11:54 pm 
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Tube Radio wrote:
A rotary switch would be best, but it might be better to buy a premade three input switch unless you already have the parts on hand to build one or can get the parts relatively easily.

Also here's something to think about.

There are stereo volume control kits that have inputs on them which are selected by relays most which are remote controlled.

Perhaps one of those kits (uses a motorized volume control) would be a good way to do it and you also then have a single stereo volume control.



That is something to think about. Wont need it in the shop, but sure could use it in the house.

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 Post subject: Re: Philco amp re-build.
PostPosted: Sep Tue 19, 2017 11:56 pm 
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Pbpix wrote:
john8750 wrote:
Peter- If you find them, please send to me. And please send more of that wire. Just the small size, is perfect.
I'm gonna mount them on a 'L' shaped main frame. It will have a power switch and pilot light. And a selector
switch for inputs, MP3/CD/FM tuner. Thinking about either a rotary sw, or a toggle.
Any ideas?

I think I have them here.. I'll look around.
Sorry buddy.. I don't have any more of that cloth wire... I sent you ALL that I had... enjoy.



No problem Peter.
But, where did you get that wire? Its just perfect.
Don't you want to know how I become silly?

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 Post subject: Re: Philco amp re-build.
PostPosted: Sep Wed 20, 2017 1:29 am 
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john8750 wrote:
Pbpix wrote:
john8750 wrote:
Peter- If you find them, please send to me. And please send more of that wire. Just the small size, is perfect.
I'm gonna mount them on a 'L' shaped main frame. It will have a power switch and pilot light. And a selector
switch for inputs, MP3/CD/FM tuner. Thinking about either a rotary sw, or a toggle.
Any ideas?

I think I have them here.. I'll look around.
Sorry buddy.. I don't have any more of that cloth wire... I sent you ALL that I had... enjoy.



No problem Peter.
But, where did you get that wire? Its just perfect.
Don't you want to know how I become silly?

Ebay.
A guy had old multi wire data/communication cables that he cut open and then separated out all the many wires inside and sold it in pre cut lengths.
That was about 10 years ago.

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