[R-390] Audio

[Tisha Hayes]

Going so far as to rewire tubes ( Bill Kleronomos/ Thomas Bones (KD0HG/
KK8M) mod) can be pretty extreme. I would suggest "The Rippel Mod" of
better caps at better values so you can leave most of the audio deck
intact. If you want high fidelity then you can use the diode load
connection through a capacitor to an external audio amplifier and bigger
speaker.

http://www.m82a1.us/radio/R390A_Audio.pdf
http://www.amwindow.org/tech/htm/r390aud.htm

I have no problem in finding 600 ohm to 8 ohm audio transformers. Some
folks use the 70 volt transformer (used to be available at Radio Shack) as
an impedance match. I have a bunch of 600 ohm speakers that I can directly
use of I could scavenge out one of the transformers from one of those.

-- 
Ms. Tisha Hayes/ AA4HA


*"neque est alter hujus universi locus quam anima"*
*('For there is for this universe no other place than the soul or mind')*
*-Arthur Schopenhauer*