YOUR CF Tube Amp Build Progress

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Martin1970
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Re: YOUR CF Tube Amp Build Progress

Post by Martin1970 » Tue Dec 20, 2011 2:56 am

Angelo, I'll need four diodes total for my two amps.
Sorry, I misunderstood.
Thought we only needed one per amp.
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Re: YOUR CF Tube Amp Build Progress

Post by frenchguy » Tue Dec 20, 2011 3:02 am

could someone please post a DETAILED pic as to where these need to be soldered in!! no hurry just want to know exactly where they go! thanks! :?
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Re: YOUR CF Tube Amp Build Progress

Post by BrianT » Tue Dec 20, 2011 6:39 am

Angelo.

I'm in the same boat as Martin, I will be needing 4 diodes.

Thanks Brian
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Re: YOUR CF Tube Amp Build Progress

Post by hewlew1 » Tue Dec 20, 2011 7:18 am

Angelo, I could use 2 more as you already sent me 6. Thanks, Harry
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Re: YOUR CF Tube Amp Build Progress

Post by Don » Tue Dec 20, 2011 7:33 am

angelod307 wrote:so i have these diodes ready to be mailed tommorow.

martin - 2

brian - 2

jerry - 2

dan - 8

don - 8

gary - 16

Angelo,

Please take me off your list. Alex took care of it for me when I drove over there a couple of weeks ago. Thank you so much.
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Re: YOUR CF Tube Amp Build Progress

Post by AlexSauter » Tue Dec 20, 2011 7:46 am

frenchguy wrote:could someone please post a DETAILED pic as to where these need to be soldered in!! no hurry just want to know exactly where they go! thanks! :?
On page 13 of this thread I posted a link for mike of my Facbook page where I uploaded 4 pictures of the DC restore circuit where the Zener Diodes go.

Here is a new link:
http://www.facebook.com/photo.php?fbid= ... a0b6252bdc
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Re: YOUR CF Tube Amp Build Progress

Post by Martin1970 » Tue Dec 20, 2011 7:57 am

Alex, all of your pics are perfect in that dimension.
I'm guessing the confusion is about how the cap ties in because you can't see the leads very well.
I know it's in the description, but it's still a bit confusing for dumbasses like me.
Thank you again for all the help with this.
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Re: YOUR CF Tube Amp Build Progress

Post by TNRabbit » Tue Dec 20, 2011 9:14 am

AlexSauter wrote:
frenchguy wrote:could someone please post a DETAILED pic as to where these need to be soldered in!! no hurry just want to know exactly where they go! thanks! :?
On page 13 of this thread I posted a link for mike of my Facbook page where I uploaded 4 pictures of the DC restore circuit where the Zener Diodes go.

Here is a new link:
http://www.facebook.com/photo.php?fbid= ... a0b6252bdc
Thanks, Alex~

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Re: YOUR CF Tube Amp Build Progress

Post by mbskeam » Tue Dec 20, 2011 8:37 pm

Alex, all of your pics are perfect in that dimension.
I'm guessing the confusion is about how the cap ties in because you can't see the leads very well.
I know it's in the description, but it's still a bit confusing for dumbasses like me.
Thank you again for all the help with this.


The next item is the bias regulator. Get a single 15 volt, 5 watt zener and install it across the 220 µf/35 volt cathode bypass capacitor. This capacitor is in the cathode circuit of the four 6BQ5 output tubes. Solder the cathode end (the band) to the (+) end of the capacitor and the anode end to the (-) end of the capacitor. The schematic you have may show two 7.5 volt zeners, or I might have erased your copy. In any event, the circuit should be a 15 volt, 5 watt zener across the 220 µf cap.


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Re: YOUR CF Tube Amp Build Progress

Post by frenchguy » Wed Dec 21, 2011 12:21 am

might be a stupid question but bob said to solder in 1 zener diode, why 2 now?? :?
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Re: YOUR CF Tube Amp Build Progress

Post by AlexSauter » Wed Dec 21, 2011 12:22 am

frenchguy wrote:might be a stupid question but bob said to solder in 1 zener diode, why 2 now?? :?

Bob changed it again while I was on the phone with him, he said it sounded better with (2) 5v 15w Zeners.
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Re: YOUR CF Tube Amp Build Progress

Post by frenchguy » Wed Dec 21, 2011 12:24 am

huh, ok, thanks alex!! :o
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Re: YOUR CF Tube Amp Build Progress

Post by treitz3 » Wed Dec 21, 2011 12:25 am

AlexSauter wrote:Bob changed it again while I was on the phone with him




WHY does that not surprise me? :wink:






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Re: YOUR CF Tube Amp Build Progress

Post by frenchguy » Wed Dec 21, 2011 12:38 am

lucky I ordered 2 last month when I ordered them, dunno why I did, thought what the hell they are only .55!! how lucky can I get! hope Im that lucky with lottery tonight!! :lol:
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Re: YOUR CF Tube Amp Build Progress

Post by engtaz » Wed Dec 21, 2011 3:30 am

Guys, check your fuses and make sure you have a 3 amp fuses. Those that don't have a switch and are unplugging amp to turn it off might think about a 4 amp fuse.
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