MarkK's Rs22528A as surrounds build thread

[joeybutts]

All panels were cut from 1/2" and laminated together to be approx 1" thick. All panels are laminated, I just need to cut braces and am waiting for Mark to confirm the layout dimensions for the baffle.

uhmmm....These are huge too.
First though, panels....


And then there were monster bookshelves. The baffle is on top for reference...

[joeybutts]

Re: MarkK's Rs22528A as surrounds build thread

Baffles are cut out and laminated. Need to cut the bracing next.

[joeybutts]

Re: MarkK's Rs22528A as surrounds build thread

The bracing is planned, Thursday it will be cut....

[joeybutts]

Re: MarkK's Rs22528A as surrounds build thread

[FlashJim]

Re: MarkK's Rs22528A as surrounds build thread

Any details on crossovers and dimensions? I'm considering a similar project for my surrounds.

I can't wait to see the finished project!

[joeybutts]

Re: MarkK's Rs22528A as surrounds build thread

Any details on crossovers and dimensions? I'm considering a similar project for my surrounds.

I can't wait to see the finished project!

This is the site for the design -

http://www.audioheuristics.org/projects_gallery/RS225_RS28A_updates/dayton_reference_rs225.htm

The only thing not there are the baffle layout dimensions which are the following -

Hi Joey,

The RS225 is centered on the baffle vertically, and the center of the RS225 is 6" above the bottom edge of the baffle.

The RS28A is offset 3/4" from the vertical centerline (one to the right and one to the left-obvious but lots of folks accidentally forget to mirror one.)

The RS28A center of the tweeter dome is 3" down from the top of the cabinet.

The PE baffle is the standard size for 3/4 cu ft non mtm box.

Hope that all makes sense...

[joeybutts]

Re: MarkK's Rs22528A as surrounds build thread

Bracing done!

[Paul Carmody]

Re: MarkK's Rs22528A as surrounds build thread

That's really cool! I've never seen bracing do that before. I wouldn't even think of trying it without a CNC, myself. But I'm pretty lousy with a jigsaw.

[Wolf]

Re: MarkK's Rs22528A as surrounds build thread

That's really cool! I've never seen bracing do that before. I wouldn't even think of trying it without a CNC, myself. But I'm pretty lousy with a jigsaw.

You don't need a jigsaw to do that, Paul.
You can use a router with an edge-guide, a table saw with a dado blade (or regular blade and a chisel), a hand powersaw with a guide, or lots of other options.
You could use a jigsaw, but I wouldn't advise it. The blade will swing out a bit as the length of the blade goes, and you won't get as straight of a cut.

Later,
Wolf

[ligs]

Re: MarkK's Rs22528A as surrounds build thread

This is the site for the design -

http://www.audioheuristics.org/projects_gallery/RS225_RS28A_updates/dayton_reference_rs225.htm

The only thing not there are the baffle layout dimensions which are the following -

Just thought this may interest you as a reference to a theater surround speaker. This one is from EV TS8-2

http://pdf.textfiles.com/manuals/STARINMANUALS/Bosch%20-%20EV/TS8-2.pdf

[joeybutts]

Re: MarkK's Rs22528A as surrounds build thread

That's really cool! I've never seen bracing do that before. I wouldn't even think of trying it without a CNC, myself. But I'm pretty lousy with a jigsaw.

Thanks Paul! Definitely took some time to do, but no CNC required. As Wolf said, this is how I did it.....

Draw it out.
Roughly cut out with jigsaw everything but circles, circles cutout with router.
Everything cutout with jigsaw then flush trimmed with a straight edge and clamps.
Chamfer all cutouts.

That's how I did it. Once I got the hang of it, it's actually really quick and easy.

Now it is time to route the channels for the bracing to be inset.

I wish I had better weather and more time to get things done....

[joeybutts]

Re: MarkK's Rs22528A as surrounds build thread

Just thought this may interest you as a reference to a theater surround speaker. This one is from EV TS8-2

http://pdf.textfiles.com/manuals/STA...20EV/TS8-2.pdf

Thanks for the read ligs! You certainly don't see materials like that with speaker systems these days!

[joeybutts]

Re: MarkK's Rs22528A as surrounds build thread

Pics of one surround bracing channeling done.

[joeybutts]

Re: MarkK's Rs22528A as surrounds build thread

Well, finally back up on this horse. Since I'm not having the surgery on my knee because my insurance told me I'm fat, I'm hoping to have these constructed by next weekend.

[mtmpenn]

Re: MarkK's Rs22528A as surrounds build thread

Not sure what your situation is, but if you need the surgery you should talk to your doc. He/she can appeal the insurance company and will often win.