Cool. Good luck with your project!
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SideTowers: http://techtalk.parts-express.com/fo...corundum-build
Totally Flat: http://techtalk.parts-express.com/fo...5-totally-flat
Plumber's Delight: http://techtalk.parts-express.com/fo...notech-winners
Linehopper: http://techtalk.parts-express.com/sh...Esoteric-build
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Originally posted by Billet View PostLooks like classic pipe harmonics to me, fortunately the stuffing appears to damp them well. Not to say that it will sound better stuffed though, I'd try it both ways.
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I played with a few different damping/stuffing methods tonight. In the chart below you can see a few different methods. The blue line is an empty cabinet, the purple is cabinet bottom stuffed with polyfil and lined with polyfill batting (too much stuffing, moved port tuning down a few hz), turquoise is bottom stuffed with polyfill, and green is bottom stuffed with mineral wool. The mineral looks the smoothest without affecting the port tuning. I will go with that for now and see how it sounds.
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Thanks for sharing your test data. Have you taken any near field port measurements? I'd be interested to see how the SPL of the main port tuning frequency shifts up and down as you make these changes.SideTowers: http://techtalk.parts-express.com/fo...corundum-build
Totally Flat: http://techtalk.parts-express.com/fo...5-totally-flat
Plumber's Delight: http://techtalk.parts-express.com/fo...notech-winners
Linehopper: http://techtalk.parts-express.com/sh...Esoteric-build
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Originally posted by 4thtry View PostThanks for sharing your test data. Have you taken any near field port measurements? I'd be interested to see how the SPL of the main port tuning frequency shifts up and down as you make these changes.
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These speakers have been very fun to listen to. From what I have measured, these speakers have about an 84db sensitivity. What surprises me, is they seem much more lively and dynamic than any speaker with this low of sensitivity. The soundstage is so wide, it almost seems to wrap around you. The center image is locked on in a very wide range of seating positions. The bass is just right. I usually like a little lower extension, but I don't feel I am missing anything while listening to them. They also sound good at low levels, which my other lower sensitivity speakers do not do as well. The highs i thought would be sound a bit rolled off, which these did not. They were a bit surprising how good the top end extension was. The downside to these speakers probably is the fact that they need to be out in the room. You can see where I placed them in the pic below. Next step is figuring out how to finish these to make them not look quite as ugly. That may be tough. I do need to figure it out on these, because I have at least one maybe two friends that want a copy of these after hearing them.
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I finally got around to finishing these. I tried to use a gloss black with a metallic flake grey, but they look pretty similar, not like what was on the can. They look fine for now, but I will probably redo them at some point. I have spent a bunch of time with these, and they are a lot of fun. The soundstage is so wide, but the top end is lacking a bit of detail. Really only noticeable when comparing directly to other more detailed speakers. Right now I have them as rear surrounds, and they really shine there.
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