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Unusual Speaker Designs

DanielT

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Tip, a DIY project this winter maybe?:D


2-13-07-snow_horn.jpg


 

JRS

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How good WAS the DQ10 BTW

Don't know if you react like me when you see their "dedicated listening room" for their top of the line esoteric or rather prototype gear ...
A large wall of windows behind the speakers :eek::facepalm:
View attachment 77410
I know this is late
Don't know if you react like me when you see their "dedicated listening room" for their top of the line esoteric or rather prototype gear ...
A large wall of windows behind the speakers :eek::facepalm:
View attachment 77410
Funny I just read the 6moon review yesterday (doing some horn homework and was curious--turns out the reviewer referred to some stick on device maybe the size of a silver dollar that when groups were placed just so, the bloom would blossom. Curiously a big hi-fi show in

Rottingham where they debuted looks like
1633883675184.png
with nothing but glass in the back. Oh and Please Don't drop that tonearm.
 

JRS

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I came to know about Thomas Danley, an eminence in things Audio through .. gasp !! The Absolute Sound magazine ... maybe 30 years ago ... He designed a subwoofer ( still designing some really different subs...) where the transducer mebrane was driven by a Hard Drive motor... I thnk it was called the Servo Drive... This product no longer figure in Danley's company Website but another company seems to have taken the designs or patents and is currently producing it .
Here is the original Danley Product
View attachment 91471

And here is the current version
View attachment 91473

And a commercial cabinet using it, the ServoDrive BasstECh 7

The company's website http://tritechlightandsound.com/links.html

View attachment 91472
From another post:
Hi

I don't recall the largest number we tested, probably about 12 or 16,
there begins to be a point that doing this indoors even in a wharehouse
becomes dangerous, remember that 132 dB is about 2 pounds of pressure
per square foot and hearing decent bass on the out side of a cinder
block and brick wall means its moving and there not supposed to.
Inside, you can actually get to the point where you have "enough bass".
12 BT-7's can produce 2400 acoustic watts from 28 to 125 HZ, steady
state which is pretty loud. 12 units, close coupled also is large enough
to have some directivity but disregarding that increase in on axis SPL,
2400 acoustic watts from a point source would be about 126.8 dB at 10
meters, at 80 meters about 108 dB and at 160 meters, 102 dB and at 320
meters would have fallen to 96.8 dB. By 5620 meters (3 1/2 miles) the
sound would have fallen to a modest 72.8 dB. I guess thats why the World
music theater got "Bass" complaints from more than 5 miles away when U-2
played there.

A fellow named Gene Patronis, an Acoustic consultant for the gov't
spec'd in 12 contras (with a bunch of other high range stuff) in a
"battle field simulator", a special room at Aberdeen proving grounds
that had 36" thick concrete walls and could reproduce the sound of a 105
mm Howitzer at some distance. The sound system in this room could induce
"shell shock". Gene (a fellow who also like loud noises) said it was
very realistic, although I have no idea what actual levels it got to.

I think the loudest audible range sound we ever made was a compressed
air siren in the 300-600 HZ range (John do you remember that beast ugh).
It measured 155 dB at 6 feet and drained John's Big air compressor tank
in a few seconds, it also broke the welded seams in the steel horn it
was attached to. That was so loud at 20 feet that even with ear plugs
AND muffs with your hands clamped on them, it was still too loud, it
even made the bones in your face hurt. It was designed to shake the dust
out of cloth bag air filters at power plants and fortunately we only had
to build and test one. Nasty Nasty Nasty.

Tom

Ey, the dylithium crystals canna take any more Cap'n


Nikola Tesla must have been smiling down from Heaven during that concert.
 

thewas

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sst-2.jpg


I saw these when I was a kid and I thought they must be the best speakers in the world, they MUST be.
As a Technics fan I was lucky some years ago to get a pair (they are very rare with only few pairs sold outside Japan having a type writer written manual and being also part of the permanent collection of the Museum of Modern Art in New York) which I have since then in my vintage loudspeaker collection. I miss though the 2 huge optional subwoofers SST-25Hz and SST-35Hz, some sellers offer those all together for more than 20k :-s
 

sarumbear

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I’m not sure anyone posted these before. I had these back in 70s. They made me to become a speaker designer as they sounded shite! :) But very loud!

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9C877ECA-E396-4BEE-8C5A-A6F08477C005.jpeg
 

Dogen

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As a Technics fan I was lucky some years ago to get a pair (they are very rare with only few pairs sold outside Japan having a type writer written manual and being also part of the permanent collection of the Museum of Modern Art in New York) which I have since then in my vintage loudspeaker collection. I miss though the 2 huge optional subwoofers SST-25Hz and SST-35Hz, some sellers offer those all together for more than 20k :-s
From an eBay seller’s website:
“Serious warning: If you own aquatic pets, we do not recommend this system for you, as it is literally strong enough to kill your fish.”
 

nagster

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Until I read the weight I thought it's a toy...
When you say so I also looked like a fantasy speaker.

Be careful that your hearing survives this moment ...:eek:
『Maximum Output: 146dB cont, 152dB peak』
? ?
I may need to wear earplugs and listen...

870 kg? I'm worried my manufactured home floors wouldn't handle the weight ???
Maybe I'd have to listen in mono. LOL
I'm also worried about the window glass.

Looks like the result if IKEA storage product and HAL9000 had a baby. . .
that!
 

kyle_neuron

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View attachment 158113
H3.4m /W1.5m /D1.2m, 870kg
I want to listen to it for a moment.
Owned one of the very first sets of these for some time. The manufacturer laughed at me when I tried to order them with handles, wheels, and flight cases.

Among other places, we took them from the northwest of the UK to an island up in the Arctic circle at the top of Norway where the sun didn't set for the entire two weeks we were there.

Fun times, although you wouldn't say that if you had to stack the bloody things.

As for loud, this is the silliest thing I've done; this level was maintained with broadband pink noise at an average of seven mic positions for 30 minute periods, with 15 minute breaks, for ten hours.

The bell on the outside of the test chamber was vibrating so loudly that you had to wear ear defenders. On the other side of a two layer-deep 6 ft concrete wall with insulation.
 

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rgpit

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1034241-ffbf3cb8-empire-8000p-grenadier-world-great-marble-tops-vintage-home-speaker-system-us.jpg

Empire speaker from the early 70s. Yep, same company that built the cartridges and turntables
 

sergeauckland

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1034241-ffbf3cb8-empire-8000p-grenadier-world-great-marble-tops-vintage-home-speaker-system-us.jpg

Empire speaker from the early 70s. Yep, same company that built the cartridges and turntables
I've loved the look of these since they were launched. It would be great to see some measurements, as the specs are decent enough.

S
 

Ken1951

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Yeah, but unlike their cartridges and turntables, their loudspeakers are ... pretty terrible sounding. :(
Memory, being unreliable as it is, I still would concur with this sentiment. The company I worked for back in the day would have the occasional pair on display and to my ears, and most everyone else that worked there, they sounded pretty horrid.
 

Killingbeans

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Among other places, we took them from the northwest of the UK to an island up in the Arctic circle at the top of Norway where the sun didn't set for the entire two weeks we were there.

Svalbard? One of the places I'd really like to visit.
 

sarumbear

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Jim Rogers JR149 (1970s) - cylindrical aluminium enclosure


Zud1OeW.jpg
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I owned a pair. It’s basically a BBC LS3/5A in a cylindrical enclosure.
 
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