Another Hopeless Attempt At Reverse Engineering a Danley Design

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#21
m R g S r said:
And without the rigging equipment, good luck safely trying to lift those upper cabinets into place. I'm guessing 500+ lbs a piece
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Haha, yeah. As soon as I see a forklift involved in loudspeaker placement, it becomes purely academic.

These are probably made of ply too, if you wanted to build the cabs for less than over 9000 trillion dollars, I'd imagine the MDF versions would weigh a metric tonne or more.
 
#23
Hi Y'all,

This doesn't have to be a hopeless attempt. 🙂 But, anyone who hauls this kind of heavy equipment around would be well advised to just buy DSL's. So this is mainly educational. For starters we would have to know the actual drivers used. I'll attach a quickly done overlay sketch showing one possible location for the drivers, and the internal horn dividers (I have no idea when one of the potos got turned around?).

Have fun.
Regards,
 

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#28
From the screw holes on the inside I'm assuming he just glued two sheets of 5x5x3/4" together to get the thick side panels. Bracing appears to be 3/4" and inner panels probably are as well. Just an assumption.
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But either way still shouldn't be terribly expensive. But it WILL be heavyyyy.

As for if they even make / sell 1.5" Baltic, I have no clue. Never asked.

Again as others said, anyone attempting this would be wise to probably just give Danley the business and enjoy their new "toy"
 
#29
Actually those screw holes appear to be for the interlocking plates. But I'm still assuming laminated two sheets of 3/4" Baltic.

What I'm wondering, why so many options for stacking (judging be the interlocking plates and channels on the sides, fronts, and backs) if these were specifically designed for stacking as in The first picture of the post? I know all venues require different setups, but if these really work the same way the BDEAP's did, they are meant to be stacked only this way In clusters of 4....
 
#30
Zero D said:
If it's not a TH, then i wonder why he's deviated from them to what "might" be a "regular" horn ?
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That's what's so brilliant about the BC horns.

Everybody knows that front loaded horns are ridiculously big and heavy.
They were the gold standard in the 70s and 80s, but in 2014 a front loaded horn seems like a complete anachronism.

But here's the brilliant part:

Danley must have realized that their sheer size can be a FEATURE.

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For instance, these Cerwin Vega workhorses are designed for one thing. They're the smallest possible horn for an 18" woofer that one human being can comfortably move.

The Danley boxes are cumbersome, they're heavy, but they're DIRECTIONAL. And the whole audio market is moving in that direction, the era of cardioids has begun. But when you make a cardioid with DSP, you're just throwing away efficiency. Yes, they work, but there's a price.

So here we have another Danley solution, where you can use fewer speakers. YES, those boxes are very large, but I'll bet a cardioid with four of the BC subs is easily 15 decibels louder than a cardioid with four vented subs.

Basically either solution will work. But to match the output and directivity of four of the BC subs, you'll likely need something like eighty(!) vented subs and much, much more power, plus DSP for the whole lot.
 
#35
m R g S r said:
As for if they even make / sell 1.5" Baltic, I have no clue. Never asked.
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I have recently found a little company in the UK who make ply to your spec. You can choose practically any wood in any order and from their blurb it appears to be mostly for reasons of weight saving ie layers of hard woods on either face and lighter types for the inner layers. You could even have layers of melamine mixed in. Or soundproofing ply with layers of rubber incorporated. All up to a thickness of 100mm (4").
I just assume that a similar service is available in North America somewhere.
(I've never bought from them although minimum order is only one 8'x4' sheet as I am somewhat scared of the price, they supply mostly boat builders where customers are usually not short of a few quid.)
 
#36
Charles Darwin said:
I have recently found a little company in the UK who make ply to your spec. You can choose practically any wood in any order and from their blurb it appears to be mostly for reasons of weight saving ie layers of hard woods on either face and lighter types for the inner layers. You could even have layers of melamine mixed in. Or soundproofing ply with layers of rubber incorporated. All up to a thickness of 100mm (4").
I just assume that a similar service is available in North America somewhere.
(I've never bought from them although minimum order is only one 8'x4' sheet as I am somewhat scared of the price, they supply mostly boat builders where customers are usually not short of a few quid.)
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Hm, 1.5" thick with every third layer some kind of visco-elastic or dynamat...wow, I bet it'd be like tapping on concrete.

I could really imagine a custom made sheet reaching well into the hundreds of dollars though, yikes. You'd better be sure that's the last of that type of speaker you'll ever make, haha.
 
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