[morzh]

OK, yes the distortion is more pronounced at low volume (I cannot make it too high - I am afraid the cone will fly out) and then someone (read - my wife) will come and strongly disapprove).

But: there is that choppy distortion at very low frequencies - low base etc. Voice and higher instruments are acceptable.
And I do realize we are not talking Hi-Fi here. All in all, I think it is acceptable overall. I'm just interested how and why. I have to prove to myself that, OK, this is the plate detector and you did what you could, this is it, unless you are willing to mod the chassis (which I am not).

Keep listening..no, it's not bad. It is playing Rod Steward "Maggie", and it is not bad, especially considering Rod's voice is raspy a bit by itself

PS. I wish I had a large PM speaker (I have one in Stromberg Carlson I just fixed but it would require another disassembly plus it is not quite large a speaker) - I could then quickly eliminate the speaker itself.
Maybe I should by a new modern PM speaker.


PPS. Just remembered I have two Yamaha 4 Ohm speakers that I toptally forgot about - unused rear speakers from my stereo.
Well, disconnected the Philco speaker's voice and connected the Yamaha to it.
Well, in short, it is not the speaker. The sound is the same, only the Philco sounds better (well, it was reconed with a new modern cone, so...)