In Reply to: Every EICO amp I ever knew... posted by mhardy6647 on September 21, 2004 at 05:33:40:
Per the Eico manual for the HF-12:"The temperature of the transformers in the HF-12 run at less than 195 degrees despite the fact that the safety limited is at a much higher 221 degrees F. Although 195 degrees F is cool for a transformer, it is very hot to the touch. Transformers which seem too hot when touched with the hand, are usually good and actually not overheating."
A small muffin fan will do a tremendous job cooling the amp, a 240v fan run on 120v will turn slowly and silently.
Alternately change the 165 ohm cathode resistor to something a bit higher like 180 ohms.
This post is made possible by the generous support of people like you and our sponsors:
Follow Ups
- Yup, dad was right! - Gary Kaufman 09/21/0408:02:12 09/21/04 (3)
- "usually good" - mhardy6647 14:05:48 09/21/04 (2)
- Re: "usually good" - snuck 20:29:42 09/21/04 (1)
- sounds about right... - mhardy6647 06:38:36 09/22/04 (0)