OO1 Posted July 24, 2020 Share Posted July 24, 2020 On 7/23/2020 at 10:59 AM, Dave A said: the survivability of plywood over MDF has been proven to me time and time again. La-Scala-2018-Spec-Sheet-v01.pdf 1.2 MB · 1 download Heresy-II-La-Scala-Belle-Klipsch-brochure-and-specs.pdf 255.5 kB · 1 download all JBL commercial speakers are now MDF , bang them once , you trash the cabs ----- Quote Link to comment Share on other sites More sharing options...
OO1 Posted July 24, 2020 Share Posted July 24, 2020 22 hours ago, Dave A said: One day I was sanding down an LS and when I got to the middle front of the sides the noise from the orbital sander was ridiculous. That's what started me thinking about braces and heavier material. Dave , Some LSI have a tougher cab construction , -I have 2 pairs of LSI , -------the AA - K55V vibrate a lot , regular plywood , the second pair has a rear panel cover that seals the rear with a Cup with twin speaker connectors and Fuse holders , AL version - K55M - no vibration --could be birch , and it feels like a heavier cab Quote Link to comment Share on other sites More sharing options...
Dave A Posted July 25, 2020 Share Posted July 25, 2020 4 hours ago, RandyH000 said: Dave , Some LSI have a tougher cab construction , -I have 2 pairs of LSI , -------the AA - K55V vibrate a lot , regular plywood , the second pair has a rear panel cover that seals the rear with a Cup with twin speaker connectors and Fuse holders , AL version - K55M - no vibration --could be birch , and it feels like a heavier cab The vibration threshold is rather small I think. I had a set of LSI's once that were really good without work. The plywood for some reason was about .07" thicker than the others and it made an audible difference. Another LSI that was fiberglass coated and had trim strips did not suffer from resonance at all from what I remember. I really don't think the back on the horn section makes a difference in the bass bin area. 2 Quote Link to comment Share on other sites More sharing options...
OO1 Posted July 25, 2020 Share Posted July 25, 2020 1 hour ago, Dave A said: I really don't think the back on the horn section makes a difference in the bass bin area. none for sure----check the plys in the K55M cutaway , it's a denser plywood than the 70's Quote Link to comment Share on other sites More sharing options...
Khornukopia Posted July 31, 2020 Share Posted July 31, 2020 On 7/23/2020 at 4:04 PM, Dave A said: One day I was sanding down an LS and when I got to the middle front of the sides the noise from the orbital sander was ridiculous. That's what started me thinking about braces and heavier material. The fir plywood of my painted LSI seems to be less dense than the raw birch LS cabinets. Quote Link to comment Share on other sites More sharing options...
Dave A Posted July 31, 2020 Share Posted July 31, 2020 43 minutes ago, Khornukopia said: The fir plywood of my painted LSI seems to be less dense than the raw birch LS cabinets. As far as I can tell Klipsch never used Baltic Birch, at least not in any cabinet I have ever seen. The did use birch veneer plywood though. Never thought to try to check for density and save scraps of wood to weigh. Quote Link to comment Share on other sites More sharing options...
OO1 Posted August 1, 2020 Share Posted August 1, 2020 8 hours ago, Khornukopia said: The fir plywood of my painted LSI seems to be less dense than the raw birch LS cabinets. what type of wood do you see here , is that Fur plywood ? - these are late 80s LSI - Quote Link to comment Share on other sites More sharing options...
Khornukopia Posted August 6, 2020 Share Posted August 6, 2020 On 7/31/2020 at 7:35 PM, RandyH000 said: what type of wood do you see here , is that Fur plywood ? - these are late 80s LSI - It is often difficult to identify wood species from a picture, but your cabinet looks like a good quality plywood. Quote Link to comment Share on other sites More sharing options...
OO1 Posted August 6, 2020 Share Posted August 6, 2020 3 hours ago, Khornukopia said: It is often difficult to identify wood species from a picture, but your cabinet looks like a good quality plywood. thank you Quote Link to comment Share on other sites More sharing options...
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