diy*tube clementine project (discontinued)

sweet & juicy SE amp for 1626 Darlings and the 6L6 family

Postby EWBrown » Fri Nov 11, 2011 9:01 am

Pins 1 and 8 can be jumpered together for V2 and V3, this would make the PC board compatible with EL34s / 6CA7s and some other more "modern" BPTs.

On the old style metal shell 6L6s (and 6V6s) , the shell is connected to pin 1, with the glass tubes, pin 1 not used.

/ed B
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Postby Shannon Parks » Fri Nov 11, 2011 11:56 am

badassbob wrote:Hey Shannon, what is the "hole pattern" on this board? Id love to do an FPE file for it ;)


I knew I was forgetting something! I will post it later today - I promise.

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Clementine Hole X,Y in Mils

Postby Shannon Parks » Fri Nov 11, 2011 9:21 pm

Clementine Hole X,Y in Mils

Mounts
200,200
200,2800
7800,200
7800,2800
2600,1300
5400,1300

Tubes
1000,1300
4000,1300
7000,1300
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Postby badassbob » Sat Nov 12, 2011 8:37 am

Thanks Shannon! I should have this up sometime today.
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Postby badassbob » Sun Nov 13, 2011 4:57 pm

The FPE file for the Clementine is finished. Check your email Shannon, let me know what you think. The IEC jack behind the PT is the one thats sold at Parts Express. The switch is the same used on the GSG, as well as the fuse holder. Theyre all in a row behind the PT. The OPT holes are for the Edcor GXSE series, and the PT holes are your standard PA774.
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Postby Shannon Parks » Mon Nov 14, 2011 7:50 am

Looks great, Bob! I just printed out a 1:1 and the Clementine fits perfectly. I've upped the file here:
http://www.diytube.com/clementine/clementine.fpd

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Postby rparsh » Mon Dec 26, 2011 5:43 pm

Hello, I recently ordered the PCB and the BOM from Mouser for the Clementine amp. The Mouser order came in three days but sofar no PCB. I came across the comments on the coupling cap voltage and I will use some of my K40Y9 Russian PIO caps. They are rated 400v and so are the ones in my KT88 Oddblocks. I can see no danger here. The 2 Orange Dip film caps that came in the Mouser order are 600 volt and are really large in diameter--over one inch in diameter. I`ll save them for my KT 120 Oddblock power supply. Robert Parsh :))
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Postby Shannon Parks » Tue Dec 27, 2011 6:30 am

Sounds cool, Robert! Those Russian caps are pretty special. I did ship out the Clementine last week, so it will probably arrive today. I think the USPS was quite overloaded due to Christmas.

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Postby rparsh » Tue Dec 27, 2011 7:46 pm

It came today,thanks Robert Parsh
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Re: diy*tube clementine project (updated 4/25/13)

Postby jnm_diyer » Mon Dec 15, 2014 2:28 pm

Out of curiosity, has anyone ever thought of using an HY69 as the output tube in this circuit? One would have to supply 6 volts DC to the filament and alter the biasing since there is no cathode in that DHP.

Admittedly, the modification is beyond my current technical capability. However, if anyone can point me to a resource to accomplish such a feat, I would be interested in giving that circuit a try.

I am thinking if it would not be feasible to use the 1625.
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Re: diy*tube clementine project (updated 4/25/13)

Postby Shannon Parks » Tue Dec 16, 2014 12:36 pm

jnm_diyer wrote:Out of curiosity, has anyone ever thought of using an HY69 as the output tube in this circuit? One would have to supply 6 volts DC to the filament and alter the biasing since there is no cathode in that DHP.

Admittedly, the modification is beyond my current technical capability. However, if anyone can point me to a resource to accomplish such a feat, I would be interested in giving that circuit a try.

I am thinking if it would not be feasible to use the 1625.


I think it was a directly heated pentode intended for battery powered devices. So you'd have to use a whole new filament supply to keep the hum down. Probably much easier to use a 807 or 1625. The only prob with the 1625s was the lack of sockets, but now they're are plentiful of new ceramic ones from China on eBay.

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Re: diy*tube clementine project (3/16/16 - back in stock!)

Postby pete42 » Tue Oct 04, 2016 3:20 pm

can kt88s be used in this board with no mods?
thanks

I think probably no.
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