W6 1/4 inch ply
Posted: Wed Sep 05, 2012 10:15 am
Just finished a pair of W6 1/4 inch ply, horn mounted tweeters.
WOW these are loud! Cant wait to use them on a stage.
A couple of notes on builds for future builders:
1/4 inch ply is a bear to deal with when you've been working with 1/2 inch. I'm probably going to build a couple of W8s and they will go much easier with the 1/2 inch.
When assembling the horn I found it very useful to first build a 4" by 4" by 4" cube, wrap it in plastic bags,
and assemble the horn around it, using brads lightly run through the throat walls into the cube to hold the horn together while the glue dries.
The cube also came into assistance when I jiggered up the phase plug on one W6. I had to cut out the phase plug entirely and make another to glue in. I found it much easier to use a hole saw and some scrap to create a phase plug than to cut the design out perfectly. With the cube in the throat, again wrapped in plastic bags gluing in the phase plug was a simple process. I guess I'm not as patient with a jig saw as I should be.
Also, I found it much easier to assemble the horn, then the shell top, sides and bottom and lower back keeping it square while drying, then later to join the two.
Also, when assembling the shell I added 1/2 inch by 1/2 inch by 3 inch strips on the inside corners to nail into, keeping away from where the horn will be when assembled.
Another item. It is a real bear to install the driver, even after drilling pilot holes.
I rotated the driver so three of the holes were accessible through the upper back then drilled a 1/2 inch hole in the lower back to give access to the fourth speaker mounting hole. After mounting the driver I glued in an automotive plastic body joiner to fill the 1/2 inch access hole using silicone sealant, This is easily removable if the driver needs repair.
I will try to get some pics soon.
WOW these are loud! Cant wait to use them on a stage.
A couple of notes on builds for future builders:
1/4 inch ply is a bear to deal with when you've been working with 1/2 inch. I'm probably going to build a couple of W8s and they will go much easier with the 1/2 inch.
When assembling the horn I found it very useful to first build a 4" by 4" by 4" cube, wrap it in plastic bags,
and assemble the horn around it, using brads lightly run through the throat walls into the cube to hold the horn together while the glue dries.
The cube also came into assistance when I jiggered up the phase plug on one W6. I had to cut out the phase plug entirely and make another to glue in. I found it much easier to use a hole saw and some scrap to create a phase plug than to cut the design out perfectly. With the cube in the throat, again wrapped in plastic bags gluing in the phase plug was a simple process. I guess I'm not as patient with a jig saw as I should be.
Also, I found it much easier to assemble the horn, then the shell top, sides and bottom and lower back keeping it square while drying, then later to join the two.
Also, when assembling the shell I added 1/2 inch by 1/2 inch by 3 inch strips on the inside corners to nail into, keeping away from where the horn will be when assembled.
Another item. It is a real bear to install the driver, even after drilling pilot holes.
I rotated the driver so three of the holes were accessible through the upper back then drilled a 1/2 inch hole in the lower back to give access to the fourth speaker mounting hole. After mounting the driver I glued in an automotive plastic body joiner to fill the 1/2 inch access hole using silicone sealant, This is easily removable if the driver needs repair.
I will try to get some pics soon.