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Multi-Way Conventional loudspeakers with crossovers

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Old 14th October 2012, 03:36 PM   #11
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yes adequate airing time is required or you run the risk of loosening the glue holding the cone to the surround!
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Old 16th October 2012, 10:31 AM   #12
ODougbo is offline ODougbo  United States
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Default Keep on Trucking

Awkward...did you take pics

I let the solvent base glue dry 12 hours per coat, outside, in the wind/sun.

About 4 hours for the clear poly; It seems fine, don't smell any glue, etc.

Applying oak veneer (cheap stuff-ebay) so thin can't sand it. Just just using yellow glue, weights, razor knife to apply it.
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Old 16th October 2012, 12:53 PM   #13
sippy is offline sippy  United Kingdom
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Looking good there Odougbo. I'm having a right job deciding how to finish my EmKens.
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Old 21st October 2012, 12:31 PM   #14
ODougbo is offline ODougbo  United States
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Should have these done soon.

Made new sub-bases for crossovers - looks like I'll need new stands.
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Old 22nd October 2012, 09:55 AM   #15
ODougbo is offline ODougbo  United States
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Default Its Official - no difference Plywood and MDF

Well none that I could tell anyway. The darker wood boxes are MDF, the Oak boxes are plywood, both have "sand walls" everything else is the same.

I've been building these out of parts that were stored in boxes, so they all have been low cost projects. I'd buy some new woofers if I could find better one(s).

I'm sure they are out there, I just know where to start (these have really cool bass). [Peerless woofers shown]

The Vifa tweeters are pretty nice, probably the best of the tweeters in the $30 range.
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Last edited by ODougbo; 22nd October 2012 at 09:59 AM.
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Old 22nd October 2012, 10:15 AM   #16
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Just curious. Has anyone ever tried this with #12 lead shot? It is lead ball for shotshells and you can buy it here.

BPI Lead Shot #12 10 lb Bag

1.25 mm diameter (0,05 inch) but quite pricey for a 10 lb (4.54 kg) bag at US $44.

What do you all think? If one were willing to spend the money do you think it would make a difference?
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Old 22nd October 2012, 10:49 AM   #17
ODougbo is offline ODougbo  United States
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you know..I tried lead in similar boxes - 1" mdf with sheet lead. The sand works a whole lot better.
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Old 15th December 2012, 11:29 AM   #18
ODougbo is offline ODougbo  United States
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Default Sand Walls DIY

Here we go again.

I'm really enjoying the 1st pair (which are finished).
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Old 15th December 2012, 05:51 PM   #19
tvrgeek is offline tvrgeek  United States
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Quote:
Originally Posted by Frankie Carbone View Post
Just curious. Has anyone ever tried this with #12 lead shot? It is lead ball for shotshells and you can buy it here.

BPI Lead Shot #12 10 lb Bag

1.25 mm diameter (0,05 inch) but quite pricey for a 10 lb (4.54 kg) bag at US $44.

What do you all think? If one were willing to spend the money do you think it would make a difference?
I thought lead shot was banned. Most shot is steel.

Anyway, I think this is expending great efforts on things that are not the biggest problem. Just my experience, but I never found that dime under the streetlight just because the light was better.
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Old 16th December 2012, 09:16 AM   #20
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Quote:
Originally Posted by ODougbo View Post
Awkward...did you take pics

I let the solvent base glue dry 12 hours per coat, outside, in the wind/sun.

About 4 hours for the clear poly; It seems fine, don't smell any glue, etc.

Applying oak veneer (cheap stuff-ebay) so thin can't sand it. Just just using yellow glue, weights, razor knife to apply it.
The solvent glue fumed for weeks! My current build uses 4 layers of stone chipped roofing felt, held on with LOTS of bitumen emulsion and nails or screws, depending on hammer access. Allowed to dry for a few hours, they can be brought indoors to be worked on. Much of the work has to be done in my living room; and yes, I AM married.
These are isobarics, crossing over (actively) at 134Hz/24dB octave,.
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Last edited by awkwardbydesign; 16th December 2012 at 09:19 AM.
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