Home Tube DIY Asylum

Do It Yourself (DIY) paradise for tube and SET project builders.

RE: if 7B4 is the best driver tube for SE DC 2A3 ...

There are minor differences in the curves, mostly at extremes. In part no doubt an artifact of manually fitting a smooth curves to discrete data points as was done in those days.

My experience with 12BZ7 was in an attempt at improving drive capabilities of two traditional PP driver topologies that utilized 12AX7: Mullard circuit and gain stage direct coupled to split load inverter. In both situations the sound was pretty much same as 12AX7 but didn't do much serious listening before moving on because of microphonics. Maybe I had a bunch of bad examples of the type. Maybe they'll work out fine in your apps. Fortunately they're still inexpensive so no great loss if they don't work out. As always with tubes like this, YMMV.


This post is made possible by the generous support of people like you and our sponsors:
  Crux Audio  


Follow Ups Full Thread
Follow Ups
  • RE: if 7B4 is the best driver tube for SE DC 2A3 ... - Steve O 08:29:45 03/02/17 (0)

FAQ

Post a Message!

Forgot Password?
Moniker (Username):
Password (Optional):
  Remember my Moniker & Password  (What's this?)    Eat Me
E-Mail (Optional):
Subject:
Message:   (Posts are subject to Content Rules)
Optional Link URL:
Optional Link Title:
Optional Image URL:
Upload Image:
E-mail Replies:  Automagically notify you when someone responds.