Home Vintage Asylum

Classic gear from yesteryear; vintage audio standing the test of time.

[ Follow Ups ] [ Post Followup ] Thread: [ Display  All  Email ] [ Vintage Asylum ]
[ Alert Moderator ]

RE: Heathkit AA-121 * PT hum * Coupling cap question

I think part of the problem might be with the tiny yellow IC film caps since the roll-off with a .047uf cap is where you say it is. It shouldn't be reaching up into the mid-bass frequencies as I am hearing. I never use the yellow caps, but I left them in to find out if the amp worked. They might take longer to burn-in and mellow out than I'm used to with the K-40Y PIOs.

Since I can use .1uf then I may eventually use a quad of copper foil caps in it. That should warm it up quite a bit. I am quite impressed with the clarity and power the AA-121 puts out. Could be a keeper.

Larry D.

This post is made possible by the generous support of people like you and our sponsors:
  The Cable Cooker  

Follow Ups Full Thread
Follow Ups
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.

[ Top Top of Page ] [ Contact Us ] [ Support/Wish List ] [ Copyright © 2024, Audio Asylum, all rights reserved ]
[ General ] [ Speakers ] [ Tubes ] [ Vinyl ] [ Digital ] [ Hi-Rez ] [ Video Asylum ] [ Cables ] [ Tweaks/DIY ] [ Music ] [ Films ]