Dropped a SIF Ba

exurbia · 21st January 2008, 11:24 PM

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.

Diy martin · 22nd January 2008, 03:19 PM

Hello Peter,

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

Best regards Martin.

exurbia · 22nd January 2008, 07:02 PM

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.

Diy martin · 22nd January 2008, 07:43 PM

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.

exurbia · 23rd January 2008, 09:43 AM

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.

exurbia · 23rd January 2008, 09:53 AM

another picture, they're so pretty

exurbia · 23rd January 2008, 09:54 AM

very pretty,

Diy martin · 23rd January 2008, 06:18 PM

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

exurbia · 25th January 2008, 10:59 AM

Martin,
Thank you for the marvellous offer of testing

the valves.

Cheers,
Peter.

piffpaff · 27th January 2008, 08:28 AM

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?

21st January 2008, 11:24 PM	#1
exurbia diyAudio Member Join Date: Jul 2002 Location: Perth	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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22nd January 2008, 03:19 PM	#2
Diy martin diyAudio Member Join Date: Apr 2003 Location: papendrecht	Hello Peter, I have some Ba's with tips , do you have a pic. of the tube Best regards Martin.

22nd January 2008, 07:43 PM	#4
Diy martin diyAudio Member Join Date: Apr 2003 Location: papendrecht	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.

23rd January 2008, 09:43 AM	#5
exurbia diyAudio Member Join Date: Jul 2002 Location: Perth	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.

23rd January 2008, 06:18 PM	#8
Diy martin diyAudio Member Join Date: Apr 2003 Location: papendrecht	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

25th January 2008, 10:59 AM	#9
exurbia diyAudio Member Join Date: Jul 2002 Location: Perth	Martin, Thank you for the marvellous offer of testing the valves. Cheers, Peter.

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