Tube DIY Asylum

RE: Why not try something different ?

202.172.104.29

[ Follow Ups ] [ Post Followup ] Thread: [ Display  All  Email ] [ Tube DIY Asylum ]

It's simply a high Henry choke to ground after the coupling cap (in parallel with the grid leak resistor of the next stage). This can go anywhere in a circuit where there is a coupling cap, the most popular place being on the grid of the OP tube in the main amp. However I find that the sonic benefits exist no matter where in the chain it goes and although it would be very unusual to place it on the OP of a preamp it will work just fine provided you know what the input of the main amp it's driving looks like. Here the only factor is the grid leak R which will typically need to be at least 100K and up to 470K depending on taste. The alternative is to install the GC in the main amp. Value wise a good starting point is a 0.22uF coupling cap with a 300H Grid Choke. If you try it please report your impressions.

Rgds,
Naz

Follow Ups:

Post a Followup:

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.

[ Follow Ups ] [ Post Followup ] Thread: [ Display  All  Email ] [ Tube DIY Asylum ]
[ Comment ] [ Edit ] [ Delete ] [ Copyright Warning! Click for Details ]
[ Top Top of Page ] [ Contact Us ] [ Support/Wish List ] [ Copyright © 2008, Audio Asylum, all rights reserved ]
[ General ] [ Speakers ] [ Tubes ] [ Vinyl ] [ Digital ] [ Hi-Rez ] [ Video Asylum ] [ Cables ] [ Tweaks/DIY ] [ Music ] [ Films ]