DCAudioDIY.com

DC Area Audio DIYer's Community
It is currently March 28th, 2024, 4:11 pm

All times are UTC - 5 hours [ DST ]




Post new topic Reply to topic  [ 2 posts ] 
Author Message
 Post subject: pushing the 5881
PostPosted: February 20th, 2017, 7:48 pm 
Offline

Joined: October 10th, 2016, 10:23 pm
Posts: 55
Hi,
Thoughts on running a new production 5881 (Psvane) on a McIntosh ms240? the Mac's B+ is 430V. According to the old TungSol datasheet, the 5881 can cope with 400V. However, some 5881's are rated for higher B+. I can't find anything on the Psvane (though I have a question in to the North American distributor). Other than flames and the smell of ozone, are their warning signs that the tube is failing? I've been playing the Psvanes in the Mac for about 8 hours. It's the best sounding of the current 6L6 family in my system, ranking just a smidge behind the SED 6L6GC.

V/R
James


Top
 Profile  
 
 Post subject: Re: pushing the 5881
PostPosted: February 21st, 2017, 12:27 am 
Offline
User avatar

Joined: July 24th, 2015, 4:17 pm
Posts: 1701
Location: Parkville, Maryland
I am not sure why the 6L6 is OK in the MAC what with a 430-vdc plate supply, but MAC's other recommended tube was the 7027.

As far as I am concerned, based on personal experience, a brace of vintage GEC KT-66's with the carbon-coated glass would transform your MAC.

http://www.ebay.com/itm/A-Perfectly-Mat ... Sw44BYipA5

https://frank.pocnet.net/sheets/086/k/KT66.pdf

And to add to the desirability -- those "grandfather" KT-66s are rated at a minimum of 8,000 hours MTBF.

_________________
Walt


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 2 posts ] 

All times are UTC - 5 hours [ DST ]


Who is online

Users browsing this forum: Google [Bot] and 30 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron
Powered by phpBB® Forum Software © phpBB Group