6P15P socket connection - diyAudio
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Old 30th March 2012, 10:46 PM   #1
tuhkam is offline tuhkam  Estonia
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Default 6P15P socket connection

If I would want to make a socket that can use both tubes, would it work if I added a wire like that?
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Old 30th March 2012, 11:07 PM   #2
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Yep, just head the usual cautions for a 6P15P.
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Old 31st March 2012, 10:16 AM   #3
tuhkam is offline tuhkam  Estonia
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Thanks!
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Old 31st March 2012, 12:20 PM   #4
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Hell no PIN 1 IS IC !

my philips specimens show G1 weld tabs to Pin 1 and 2


you'l BLOW the tube
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Old 31st March 2012, 01:52 PM   #5
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what i meant is that you will blow a EL84 when you plug that in .


the cathode will then be connected to VG1 meaning 0 volts grid-cathode potential witch will likely red plate your EL84

pin 6 however shows NC so joining 6 and 3 should work

PIN 1 SHOULD NOT BE CONNECTED TO ANYTHING .

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Old 31st March 2012, 02:49 PM   #6
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According to the PHILIPS EL84 datasheet pins 1, 6 and 8 have unspecified internal connections. All three mustn't be connected to anything!

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Old 31st March 2012, 04:31 PM   #7
tuhkam is offline tuhkam  Estonia
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I'll try to look inside my tubes!
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Old 31st March 2012, 05:35 PM   #8
tuhkam is offline tuhkam  Estonia
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Pins 6 and 8 on the 6P14P seem to extend straight up to the octagon that forms the base of the internal assembly. Mostly they are touching it, but on some specimens they end ~1mm before touching the octagon. Pin 1 seems soldered to that octagon (EDIT:to a rivet fixed in the octagon).

On 6P15P Pin 8 seems NC.

I guess it's not secure to make an universal socket, unless this octagon is made of non-conducting material on all 6P14P?

Last edited by tuhkam; 31st March 2012 at 05:44 PM.
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Old 1st April 2012, 05:14 PM   #9
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As I wrote before, you mustn't connect pins 1, 6 and 8 to anything! They indeed maybe internally not connected to anything, but most likely they are. Pin 1, e.g., mostly is connected to grid 1, due to cooling reasons.

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Old 1st April 2012, 09:29 PM   #10
TheGimp is offline TheGimp  United States
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tukham asked specifically about the 6P14P and 6P15P. He did not ask about EL84 compatibility.

If he can confirm that the 'unconnected' pins are not connected to anything else (use an ohm-meter to verify) there is no reason for him not to proceed as he wishes.

Granted there are issues with connecting this way and using EL84s, but that was not his intent from his first post.

Would one do this for an amp that is to be sold? Heck no, because we know someone would eventually try EL84s in it.

So long as it is for his personal use there is no reason to move outside the box when experimenting.

Just be sure to mark the unit in such a manner as to prevent years from now someone unbeknownst to should they be tempted to make the swap.
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