Forums - Print Page

Forums
https://www.decware.com/cgi-bin/yabb22/YaBB.pl
EQUIPMENT FORUMS >> ZP3 / ZMC1,2,3 >> Can you Hot SWAP 12ax7 in the Decware phono preamp
https://www.decware.com/cgi-bin/yabb22/YaBB.pl?num=1401628789

Message started by P K on 06/01/14 at 14:19:48

Title: Can you Hot SWAP 12ax7 in the Decware phono preamp
Post by P K on 06/01/14 at 14:19:48

Can you hot swap the 12ax7 in the Decware phono preamp ZP3 (for tube rolling)?

Thanks,

Peter

Title: Re: Can you Hot SWAP 12ax7 in the Decware phono preamp
Post by mark58 on 06/01/14 at 14:55:37

I don't know but am interested if you can. I tube roll often in my ZP3 and do it with it off and cold at the beginning of a listening session. Mark.

Title: Re: Can you Hot SWAP 12ax7 in the Decware phono preamp
Post by P K on 06/01/14 at 18:11:12

I Hope Steve D. will respond!!!!

Title: Re: Can you Hot SWAP 12ax7 in the Decware phono preamp
Post by Lon on 06/01/14 at 18:38:03

You can hot swap it if the ZP3 is powered off. It has been done. Probably not smart to do so, but I have done it and not harmed the preamp.

Title: Re: Can you Hot SWAP 12ax7 in the Decware phono preamp
Post by P K on 06/02/14 at 16:51:34

Now I am confused, I thought "HOT SWAP" was to exchange tubes while the phono preamp was still turned on.

The ZP3 has two levels of being turned off, standby mode, current to heaters? or off.

I DO NOT UNDERSTAND YOUR REPLY.

Please advise.

Peter

Title: Re: Can you Hot SWAP 12ax7 in the Decware phono preamp
Post by Lon on 06/02/14 at 18:13:03

Then I misunderstood you. Personally I would not remove the tube unless the ZP3 was turned off. That's just me. It may not be harmful, but it's easy to just turn the component off and remove the hot tube, install another, turn back on.

Title: Re: Can you Hot SWAP 12ax7 in the Decware phono preamp
Post by Steve Deckert on 06/02/14 at 19:04:09

Technically you can remove a hot tube while the unit is on without damaging the it, however you will often get a hellacious pop from your speakers if you don't have the volume all the way down. I can't speak for what it will do to the tube itself. I would follow Lon's advise on this one!

-Steve