I have a pristine ST70 Dynakit ( yes with selenium diode I know
I have to replace do it ,,, do it ) but it starts rolling off
the bass at about 300hz or so.
How do I know... I have a Umik-1 and use REW with a pair of
Spica TC50 and REW says a big NO to anything below approx. 300hz.
With another amp bass shows up fine.
What is the cause of this ?
I would like to step through the solution instead of just
upgrading to newer parts, just because I'm curious.
I have a suspicion it would be some magnetic flux capacitation..
Maybe the tubes are old ???
Like I said this thing has not one replacement part since it
What should I do...
New cap can first from tubes4hifi ??
Speak to me...
hahaha thanks for reading