06-04-2020, 07:12 PM
Two 15 tubers side by side! Tonally, with a hifi transmitter, the 37-116 has the advantage. Better extended treble even though the Zenith has a tweeter. Interestingly, if I detune the Zenith slightly, the high frequency response improves. I think I'll put it on the spectrum analyzer and see if I can broaden the IF by stagger tuning the transformers slightly. The analyzer gives a good picture of what is happening. I'll also analyze the tone control circuit to see if I can change a couple of values to improve response. I'm not overly impressed with Zenith's system! Ya gotta love the dial though. Only problem is the dial light does a nice job of lighting the black trim but not the dial.
The curved veneer problem that I need to deal with is obvious. (Oops! That photo is upside down). Any experts out there with advice?
The curved veneer problem that I need to deal with is obvious. (Oops! That photo is upside down). Any experts out there with advice?
