[Hallicrafters] SX-117 Audio has too many lows

[kc9cdt at aol.com]

Hi everyone,
I have a beautiful SX-117 that hears super!
The audio however seems to have way too much lows in it and no highs. 
Kind of muddy sounding.
I tried two different HAllicrafters speakers that are in the 
PS150-120....same sounds.
It is much better with the Halli R-47, small desk speaker

I plan to look at this tommorrow to start checking to see what's going 
on...
Any ideas of what could cause this?

Thanks & 73,
Lee, KC9CDT