Frugel-Horn Mk3

[chrisb]

Originally Posted by kec

Just curious, what are you guys paying for baltic birch plywood? 15mm and 18mm

I get my 18mm for $32 USD (5'x5')

excellent price - that's less than CDN wholesale jobber cost

FWIW, 15mm would be adequate for the FH3 if using FE126E (which needs less than 3 rebate ) or not rebating for flush mounting the Mark Audio/Alpairs.

If using 18mm throughout, parts, you'd likely want to modify dimensions to adjust for additional 3mm thickness per layer of internal parts. ( i.e. 9mm deeper / 6mm taller ) Sorry for the metric, try as I might I can't think in imperial when it comes to cabinet making - round to the nearest 32nd" is close enough.

[doorman]

We are a schizophrenic country. Millwork in metric, (most) houseplans in Imperial!
(how many other countrys can you get tapemeasures w/metric on one side, Imp. on the other!!)
Don

[Scottmoose]

This one does. But then, we would, as the heart of the Empire.

[ghpicard]

Originally Posted by doorman

(how many other countrys can you get tapemeasures w/metric on one side, Imp. on the other!!)
Don

All the rest of the countries of the world do. The one that manufactures everything less babies in the world saw fit to do so and here I am in Argentina using one of the measuring tapes you mention, being that we have been metric since 1886.

[chrisb]

Originally Posted by doorman

We are a schizophrenic country. Millwork in metric, (most) houseplans in Imperial!
(how many other countrys can you get tapemeasures w/metric on one side, Imp. on the other!!)
Don

Don, are you sure you're a native Canuckian ? - you forgot to start or at least include "I'm sorry" in your first sentence.

[planet10]

15mm BB is fine. It is just fine for FE126 even with rebate. It is the Alpair7, with its thick bezel that benefits from 18mm baffles.

dave

[doorman]

Originally Posted by chrisb

Don, are you sure you're a native Canuckian ? - you forgot to start or at least include "I'm sorry" in your first sentence.

SORRY, Chris!!
Don (cheeks burning with shame--)

[Merkutio]

Originally Posted by planet10

15mm BB is fine. It is just fine for FE126 even with rebate. It is the Alpair7, with its thick bezel that benefits from 18mm baffles.

dave

thanks Dave

what's the best damping for fostex 126en?

[planet10]

We used a combo of cotton (wool) felt on surfaces near the driver to minimize reflections rhtu the cone, and well teased polyfluff (polyester wool, dacron wool, acoustistuff, pillow stuffing, BAF) to damp the line. The pointy bit as per the diagram, and some just above or below the driver to taste.

dave

[Merkutio]

ok thanks