tone control

[radio nut]

Originally Posted by Reece

Not sure which 45X you have, NostalgiaAir lists a number of them with suffixes. The first one is a small table model with 4" speaker.

The simplest kind of tone control is a "losser" type which just cuts high frequencies, thus making lower frequencies sound louder. It doesn't actually boost the bass. A 4" speaker can't handle bass anyway. However, you can try this: tack a small cap (like .001mfd.) from the grid of the first audio tube to chassis ground and try it. Experiment with larger and larger caps until you find the one you like. Bear in mind that if too large it will cut too much treble and you could get into a situation where you have to turn up the volume to hear the set and the speaker could be overtaxed.

Reece

I can't find mine exactly. Mine is almost the same as the 45x1. The only diiference is a 68mmf cap going to the osc. coil mine does not have. My tube placement is different also. Other than that electrically they are the same.