trinityamps.com

Trinity Amps Guitar Amp Forum
It is currently Sat Nov 23, 2024 8:18 am

View unanswered posts | View active topics


Board index » On Stage » Tramp

All times are UTC - 5 hours [ DST ]



Post new topic Reply to topic  Page 1 of 1
  [ 6 posts ] 
  Previous topic | Next topic 
Author Message
Roadstar
 Post subject: 12BZ7 tube
PostPosted: Mon Aug 26, 2013 9:11 pm 
Offline
Novice
Novice

Joined: Mon Mar 07, 2011 5:34 pm
Posts: 72
Saw some 12BZ7 tubes for sale and they advertise that they have the same pins and gain as a 12AX7 but with more heater current producing more bass. Sounds interesting but.....................
Will this tube work safely in the Tramp???
Top
 Profile  
 
kurtlives
 Post subject: Re: 12BZ7 tube
PostPosted: Mon Aug 26, 2013 9:35 pm 
Offline
Expert
Expert
User avatar

Joined: Sun Feb 17, 2008 4:47 pm
Posts: 960
Location: Toronto, Canada.
Don't know that particular tube

But more heater current does not mean more bass, fact.


There is some kinda 12AX7 type tube that had a smaller internal plate resistance (rp) that will give you more gain as it provides a lower impedance output. I wanna say its a 12AZ7...

_________________
http://pdfelectronics.com
Top
 Profile  
 
Roadstar
 Post subject: Re: 12BZ7 tube
PostPosted: Mon Aug 26, 2013 9:37 pm 
Offline
Novice
Novice

Joined: Mon Mar 07, 2011 5:34 pm
Posts: 72
But is there any danger in giving it a try?
Top
 Profile  
 
kurtlives
 Post subject: Re: 12BZ7 tube
PostPosted: Mon Aug 26, 2013 9:57 pm 
Offline
Expert
Expert
User avatar

Joined: Sun Feb 17, 2008 4:47 pm
Posts: 960
Location: Toronto, Canada.
Add the heater current of the preamp tube and the power tube of your choice and see if it is the same or less than that of the power transformers heater tap.

_________________
http://pdfelectronics.com
Top
 Profile  
 
Roadstar
 Post subject: Re: 12BZ7 tube
PostPosted: Tue Sep 03, 2013 5:00 pm 
Offline
Novice
Novice

Joined: Mon Mar 07, 2011 5:34 pm
Posts: 72
Checked a tube database and found that the 12BZ7 has a heater current of 0.6 / 0.3 A. I'm currently using a vintage Sylvania 6L6 so I don't know the specs. I could switch for other power tubes (ie: JJ 6V6) if you think that may be safer.
Top
 Profile  
 
coco
 Post subject: Re: 12BZ7 tube
PostPosted: Fri Sep 06, 2013 7:59 pm 
Offline
Holy Ghost
Holy Ghost
User avatar

Joined: Sun Mar 13, 2005 4:10 pm
Posts: 7519
Location: Canada
I haven't checked anything about this tube, but I think the PT can handle the current. After you run it, see if the PT overheats at all, and maybe check the voltages as well. be si the pin out is the same by the way! I leave that up to you. look forward to your feedback on it.

_________________
Stephen
Web: www.trinityamps.com. Facebook: facebook.com/trinityamps. Twitter: @trinityamps
Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  Page 1 of 1
  [ 6 posts ] 

Board index » On Stage » Tramp

All times are UTC - 5 hours [ DST ]

Who is online

Users browsing this forum: No registered users and 22 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:  
Powered by phpBB® Forum Software © phpBB Group