K&K Audio / Lundahl Transformers

RE: Ping Dave: Parafeed cap directly to ground or cathode?

24.225.92.146

[ Follow Ups ] [ Post Followup ] Thread: [ Display  All  Email ] [ K&K Audio / Lundahl Transformers ]

Hi bequerel,

First, be very careful switching that capacitor. I found out the hard way that switching hot can destroy the MOSFETs in the CCS. Make sure that the power is off and the supply discharged before switching the capacitor.

From memory, it has been quite a while and a lot of the grey cells have turned into grey hair, the best sounding configuration was with the capacitor connected to the cathode. With that configuration I had to add a small (470nF) bypass capacitor across the cathode resistor.

The DC operating point of the tube is the same for both configurations, but the AC characteristics are different.

Dave


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 ] [ K&K Audio / Lundahl Transformers ]
[ 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 ]