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Doughbro - Posted - 06/15/2009: 05:51:09
I recently had the chance to compare a couple of cones by rapping them with my knuckle and listening to the ring, like you would do with a tuning fork. The new Quarterman has a bell-like tone that registers B flat, when held above a tuner. OTOH, the cone in my DW90 which is spun, but doesn't have a name on it, rings out a higher tone of G. It also had a second overtone but I couldn't determine what note it was.
This got me to wondering if the G cone would be better for open G tuning. I couldn't install the Quarterman in my DW90 without sanding the cone, so I'm left wondering. The Quarterman went in my 1977 Dobro 114 and it sounds great.
Has anyone ever checked out the tone of their cone this way, or am I becoming a genuine resonator weenie? 
Tom Jr. - Posted - 06/15/2009: 11:18:08
You are a genuine reso weenie. I haven't actually checked mine but have thought about it an awful lot. I am also interested in the note of the spider. I think they should be matched somehow, not necessarily the same not but complementary notes.
Don''t squat with your spurs on.
jaykellogg - Posted - 06/15/2009: 11:24:42
It seems to me that the spider and the cone are bolted together. That would change its resonent frequency, would it not? When I am at a jam if i am not playing along with the others, I can feel my guitar resonating.
W. Jay Kellogg
Doughbro - Posted - 06/15/2009: 14:01:02
Jay, you make a good point. I should've checked it with the spider screwed on the cone.
So, I just picked it up and hummed into the hubcap and It's still resonating a G note. This has got to be good since I play in open G most of the time.
Guitars do this as well. I first noticed this many years ago when I'd sneeze and hear my old guitar echoing, on the other side of the room. I believe most guitars have a resonant frequency anywhere from F# up to about A note. Of course, there's so many variables, there's bound to be exceptions.
