My adventure with Holey Corals

[ejfud]

After a tease a few weeks back, we have the first incarnation of my uses for the Holey Corals.

These cabinets were a kit from a few years back that was designed for the Fostex 103 type drivers. That’s about all I remember about them, but I’ll be digging through the Wayback to see what I can find out about them.



The Holey’s are playing fullrange with the Anarchy tapped horns coming in around 100hz. Still playing with levels and crossover points, but these little drivers do have some magic to them.

More to come.

 

[marantzfan]

Those look familiar....are those the long forgotten “insubnias” from years past? I built one back then but have yet to put it to use.

 

[ejfud]

Not the Insubnia, These use the Anarchy sub from DIY Cable and now DIY Sound Group fame.

Anarchy 7 inch woofer by Denovo Audio

7 inch Anarchy woofer, Anarchy, Denovo Audio, small subwoofer, 12.5mm X-max, powerful woofer

www.diysoundgroup.com

 

[marantzfan]

Yep, those are what I built. I remember buying a flat pack for the cabinet. Now I kinda wish I’d bought two.

 

[ejfud]

The cabinet for the Coral can be seen here.

onez_index

 

[Thermionics]

I'm thinking you need to play Mozart's Requiem on these speakers to break them in. You know, Holy Chorales for Holey Corals.

 

[Redboy]

Hey, I know a guy who built some of those but he did some weird stuff with the drivers. Wrapped 'em in pretzel dough, or something...

 

[Audionut]

Hey, I know a guy who built some of those but he did some weird stuff with the drivers. Wrapped 'em in pretzel dough, or something...

Possibly plumbers putty on the metal frame and some sort of insulation around the magnet. When I pulled mine out of their cabinets they had a felt sock over them with heavy insulation, not sure how they breathed that way.

 

[electrovice]

I am trying to understand the design of the onez enclosure. Is the gap between the baffle and the body of the enclosure a visual design element ( like the rear "wing") or is it part of the enclosure's port? What are the internal dimensions of the enclosure? What are the dimensions of the ports?

 

[ejfud]

All right, quarantine gives you some time to play.

Here is a pair of black Holey Corals in the Reso cabinets. Very nice. The blacks sing every bit as much as the yellows do. These big, open back cabinets are the bomb with these drivers.

 

[Redboy]

Nice work, Gary! Wish I could hear those!

I should leave some drivers on your porch... there's a pair of those Philips something-or-others here that would probably be happy in the RESO cabinets.

 

[electrovice]

All right, quarantine gives you some time to play.

Here is a pair of black Holey Corals in the Reso cabinets. Very nice. The blacks sing ever bit as much as the yellows do. These big, open back cabinets are the bomb with these drivers.View attachment 21181View attachment 21182View attachment 21183

Those look like an interesting project. I see that Reso is a commercial speaker enclosure. Are these commercial or DIY? If DIY, is there some info floating around the web about them. Bored (board?) woodworkers want to know.

 

[ejfud]

Those look like an interesting project. I see that Reso is a commercial speaker enclosure. Are these commercial or DIY? If DIY, is there some info floating around the web about them. Bored (board?) woodworkers want to know.

DIY, a bunch of info can be found at below link.

Let's Build Some Resonating Cabinets

Yep, I said resonating. Opposite of modern speak design. Let a surface area that is under load (bent) resonate. Sounded interesting to me. So I'm going to build two pairs. On specifically for some vintage Saba Greencone drivers and one that will allow for lots of different drivers and porting...

audiokarma.org

 

[electrovice]

DIY, a bunch of info can be found at below link.

Let's Build Some Resonating Cabinets

Yep, I said resonating. Opposite of modern speak design. Let a surface area that is under load (bent) resonate. Sounded interesting to me. So I'm going to build two pairs. On specifically for some vintage Saba Greencone drivers and one that will allow for lots of different drivers and porting...

audiokarma.org

I have that bookmarked. Thanks.

 

[ejfud]

I have that bookmarked. Thanks.

Happy to help further if you have any other questions.

 

[Thermionics]

Did you build those Reso cabinets from scratch or were they from the flat-pack kit that was being sold for a while?

 

[ejfud]

Did you build those Reso cabinets from scratch or were they from the flat-pack kit that was being sold for a while?

These were built from scratch. This was pair #2 of 4 pairs that have been built in the basement.

Every time I listen to these cabinets, I walk away smiling. They just sound nice. Perfect, no, but crazy enjoyable.

 

[electrovice]

These were built from scratch. This was pair two of 4 pairs that have been built in the basement.

Every time I listen to these cabinets, I walk away smiling. They just sound nice. Perfect, no, but crazy enjoyable.

Gary, I read that thread. Do you have any dimensions that you could share? I think the key stuff would be the height of the enclosure (not including the base/riser, the height of the riser, the width of the front baffle and the width of the rear panel. The convex/concave profile could be estimated from the picture of the template. This would allow someone to make a approximate copy of the enclosure.

 

[Redboy]

Every time I listen to these cabinets, I walk away smiling. They just sound nice. Perfect, no, but crazy enjoyable.

I feel the same way about 'em!

 

[ejfud]

Here are my templates. The one has the dimensions written on it. The other is the bottom template that also works as a top temple. The sides meet the front continuing the angle, not at 90 degrees. The back meets at 90 degrees.