Quote Originally Posted by GM View Post
Yes, back in my 20s I thoroughly tweaked to a fare-thee-well one pair of 511/802, align boring, machine matching coupling surfaces with wax paper gaskets, cutting out the vane welds to stress relieve the castings, ground down internal welds, removed now useless brace, used Liquid Rubber? to fill the vane gaps and seems like I did some other stuff, but can't remember ATM.

Anyway, while the women could tell a big difference, which BTW they didn't like as it just made record hiss worse; me and the other guys just noticed less 'horniness' along with increased record noise, which I would later learn was mostly due to less reflections back to the throat, so never did my other pair, instead began my experiments with using various damping materials around the mouth to damp them at the source, finally winding up with 'trail pad' open cell foam used in sleeping bags at the time and continue to this day to recommend open cell foam horn mouth 'baffles', preferably mounted to wood baffles, plus some in the throat to 'taste', but few do due to being more interested in cosmetics and its raw prosound even though a perforated screen does basically the same thing when spaced at the proper 3/4" and what I used as a grill for my long gone system.
Had the desired effect I'd always suspected, just like a 2 stroke!

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Quote Originally Posted by Lycoming680 View Post
Had the desired effect I'd always suspected, just like a 2 stroke!
Did you ever encase everything but the driver?

*Encasing the exterior, that is...

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Quote Originally Posted by GM View Post
Yes, back in my 20s I thoroughly tweaked to a fare-thee-well one pair of 511/802, align boring, machine matching coupling surfaces with wax paper gaskets, cutting out the vane welds to stress relieve the castings, ground down internal welds, removed now useless brace, used Liquid Rubber? to fill the vane gaps and seems like I did some other stuff, but can't remember ATM.

Anyway, while the women could tell a big difference, which BTW they didn't like as it just made record hiss worse; me and the other guys just noticed less 'horniness' along with increased record noise, which I would later learn was mostly due to less reflections back to the throat, so never did my other pair, instead began my experiments with using various damping materials around the mouth to damp them at the source, finally winding up with 'trail pad' open cell foam used in sleeping bags at the time and continue to this day to recommend open cell foam horn mouth 'baffles', preferably mounted to wood baffles, plus some in the throat to 'taste', but few do due to being more interested in cosmetics and its raw prosound even though a perforated screen does basically the same thing when spaced at the proper 3/4" and what I used as a grill for my long gone system.
Honestly, what were you "align boring" on speakers? Unless you're riding a Leslie speaker powered bike- I fail to see your point as to "align boring" and speakers.