6JM6 Infomation for Pete Millett's DCPP Amp - diyAudio
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Old 27th August 2010, 03:01 PM   #1
Dagwood is offline Dagwood  New Zealand
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Default 6JM6 Infomation for Pete Millett's DCPP Amp

Hi all

I'm putting together a parts list for this amp and have a few questions,

I'm planning on using 6JM6 or 6GV5 as I like the plate cap look, my question is what size top cap do I need as the datasheet only shows it as a C1-3 cap dose anyone know what size this is? http://www.mif.pg.gda.pl/homepages/f...123/6/6JM6.pdf

Also, what cable would best suit to connect the cap and plate connection on the PCB, plate voltage will be about 325V ( not sure of current? ) so was thinking that a silicone - flexible - stranded cable?? any tips would be great

Cheers
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Old 27th August 2010, 03:49 PM   #2
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For my DCPP I used caps from Pacific TV: Pacific T.V. - Vacuum Tube Sockets.
Silicone rubber H.V. test lead cable (1000v rated) was what I used for the leads.
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Old 27th August 2010, 03:53 PM   #3
rknize is offline rknize  United States
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I only have one size kicking around. It's the type that fits the 807. They are usually referred to as "small".
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Old 27th August 2010, 05:27 PM   #4
Dagwood is offline Dagwood  New Zealand
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Thanks guys

I found this one at RS is high temp as well,
RS | Cables | Equipment Wire/Instrumentation | High Temperature Wire | High Temperature

I'm sure 3A is high enough for this one.

Iv'e also checked out Pacific TV, thanks for the heads up neonthecat

Cheers
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Old 27th August 2010, 05:43 PM   #5
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Here's a close-up image of the 6JM6, cap and lead on my DCPP.

(BTW...you are really going to love the music this design reproduces. DIY'ers are very lucky Pete made this so easy for us to build with the quality PCB he offers.)
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Old 27th August 2010, 05:54 PM   #6
Dagwood is offline Dagwood  New Zealand
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Nice work, that is exactly the look I want.

Yes really looking forward to starting this one! I have shelved 2 other amp projects to work on this one, biggest nightmare is having to wait! as we are shifting from the UK to New Zealand in a few weeks so spending the time trying to source parts ( real trouble with the Ixys IXCP10M45S) for this one and dreaming of my new workshop!

Did you try the 6JN6's as well?

Cheers
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Old 27th August 2010, 06:29 PM   #7
Perseo is offline Perseo  United States
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I am building a DCPP, and have collected some eligible sweep tubes.

Yesterday I was looking at my 6GV5s. They do indeed have a physically "small" grid cap. I have some small ones that I use on 6C8G and 6F8G. These fit perfectly. This size cap is listed as a "skirted miniature."

Above someone refers to the "small" grid caps as being those that fit the 807. I don't have an 807 on hand. but I think that is not correct. Look at this web page, which refers to the 807 size grid cap as a "medium."

Tube Sockets & Grid Cap List @ ABC Vacuum Tubes

I just looked at the charts for some of these tubes. Although the cap for an 807 is indeed referred to as a "small," the cap for 6GV5 and 6JM6 (and 6F8g) is the "skirted miniature", and I can assure you it is smaller than small.
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Old 27th August 2010, 08:59 PM   #8
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Quote:
Originally Posted by Dagwood View Post
....snip...
Did you try the 6JN6's as well?
While I do have a couple of quads of 6JN6's, I have far more of the "M's" so that's what I used. It won't matter, sonically, as the electrical specs are identical. Just be sure to pay attention to the changes in resistor spots on the PCB for 6JM6 vs. 6JN6.
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Old 27th August 2010, 09:05 PM   #9
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Quote:
Originally Posted by Dagwood View Post
Nice work, that is exactly the look I want.

Yes really looking forward to starting this one! I have shelved 2 other amp projects to work on this one, biggest nightmare is having to wait! as we are shifting from the UK to New Zealand in a few weeks so spending the time trying to source parts ( real trouble with the Ixys IXCP10M45S) for this one and dreaming of my new workshop!

Did you try the 6JN6's as well?

Cheers
PM me when you get settled in NZ. I have a few of the 10M45S if you still need them then.

Gary
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Old 27th August 2010, 09:09 PM   #10
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Quote:
Originally Posted by Perseo View Post
I am building a DCPP, and have collected some eligible sweep tubes.

Yesterday I was looking at my 6GV5s. They do indeed have a physically "small" grid cap. I have some small ones that I use on 6C8G and 6F8G. These fit perfectly. This size cap is listed as a "skirted miniature."

Above someone refers to the "small" grid caps as being those that fit the 807. I don't have an 807 on hand. but I think that is not correct. Look at this web page, which refers to the 807 size grid cap as a "medium."
A 6mm (1/4 inch) cap fits the 6C8G and a 10mm (3/8") cap fits the 807

Gary
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