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Old 21st January 2008, 11:24 PM   #1
exurbia is offline exurbia  Australia
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Unhappy Dropped a SIF Ba

A few days ago i decided to move my system around. I very carefully removed all the valves from my pre and then dropped one of the Ba's


My plea is therefore; Does anyone on DIY have a SIF Ba or any other Ba with the large tipped envelope ?

I will pay handsomely for either one or a pair, or i can trade from a collection of "stuff"

If the trade is for a large or heavy item i will meet you halfway on postage.

Cheers,
Peter.
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Old 22nd January 2008, 03:19 PM   #2
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Hello Peter,

I have some Ba's with tips , do you have a pic. of the tube

Best regards Martin.
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Old 22nd January 2008, 07:02 PM   #3
exurbia is offline exurbia  Australia
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Hallo Martin,

Thanks very much for the reply, i have a picture of the good valve. It may not be a SIF as there are no markings on it. But i bought a pair advertised as made by SIF.
Cheers,
Peter.
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Old 22nd January 2008, 07:43 PM   #4
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Hello Peter,

That is a PTT2S-sif from France , the coating is removed from the glass, because i can see some silver colour spray on the bass.
I have 8 of these tubes , is your tube new ? are you playing with these tubes in your preamp ? no problems with noise or humm ?



Martin.
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Old 23rd January 2008, 09:43 AM   #5
exurbia is offline exurbia  Australia
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Martin,
Thanks for the info, this one is an older valve (no pun intended).

I haven't had any problems so far with hum, they are a bit microphonic though. Though nowhere near as bad as my previous amp that ran 27's and 12's

As you have 8 of them would it be rude to ask for a pair of them. Then i'll have my well used one as a spare.

Cheers,
Peter.
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Old 23rd January 2008, 09:53 AM   #6
exurbia is offline exurbia  Australia
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another picture, they're so pretty
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Old 23rd January 2008, 09:54 AM   #7
exurbia is offline exurbia  Australia
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very pretty,
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Old 23rd January 2008, 06:18 PM   #8
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Peter,

Oke, but first i have to make a adapter for my tube tester .
It should be nice if the tubes are a good pair
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Old 25th January 2008, 10:59 AM   #9
exurbia is offline exurbia  Australia
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Martin,
Thank you for the marvellous offer of testing the valves.

Cheers,
Peter.
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Old 27th January 2008, 08:28 AM   #10
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Quote:
Originally posted by Diy martin
Hello Peter,

That is a PTT2S-sif from France , the coating is removed from the glass, because i can see some silver colour spray on the bass.

Martin.
I'd just like to point out that silver paint on the base does not necessarily mean it is a SIF tube. I have a tipped envelope Ba with paint intact over the glass branded "Siemens Ba". Also with the Siemens logo and numbered on the other side.

I do think it is a SIF tube but for another reason - in your closeup of the base the paint is sort of thick and rough. The SIF tubes I have seen have paint like that while the Siemens tubes have a smoother, thinner coat.

I have a few of these tubes - mostly Valvo box plates - and am going to try for a little Ba + 71A amp.

exurbia what do you have this tube driving?
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