I'm thinking of hooking up my fostex speakers and dropping them into a bucket of water to see it they sound better. Have any of you guys tried this?
Now that is a really silly thing to do. Science dictates what will happen, not only will they fail very quickly sound travels at a different speed in water and even if the speakers were totally waterproof there will be poor reproduction. I would call it the swimming pool effect.
I don't think I have ever read such a silly suggestion before.
Keep taking the tablets and if you don't make a hasty recovery, increase the dose!
I don't think I have ever read such a silly suggestion before.
Keep taking the tablets and if you don't make a hasty recovery, increase the dose!
Some of us old farts remember the "poly-planar" styrofoam speaker. We sold tham at Olson Electronics in 1971. We mounted them in small boxes and sealed them with RTV for use on the sailboat. One day someone got the idea to float the boxes face down in Biscayne Bay, and yes, you can hear Led Zeppelin in 10 feet of water. You can't crank them loud enough to cover up the sound of scuba regulators bubbling though.
Googling PolyPlanar reveals that the company still exists selling marine electronics, but the styrofoam speakers vanished in the 70's....but someone found an old pair:
Styrofoam Poly Planar Speakers- a very shallow speaker - YouTube
Googling PolyPlanar reveals that the company still exists selling marine electronics, but the styrofoam speakers vanished in the 70's....but someone found an old pair:
Styrofoam Poly Planar Speakers- a very shallow speaker - YouTube
Why would you want to drop a pair of Fostex's into water. Are they that awful.
For a start the motors aren't designed to drive the "porridge" that water would present rather than the air that they are designed to push around.
For a start the motors aren't designed to drive the "porridge" that water would present rather than the air that they are designed to push around.
These were originally Bertagni Electroacoustic System speakers. When Jose passed in 1992 his son's changed the name to Sound Advance Systems, then to Sonance
It's really nothing more than a motor attached to a molded polystyrene styrofoam plate. Commonly used for ceiling installations. Not really all that high end, more marketing speak back in the 70's-80's.
It's really nothing more than a motor attached to a molded polystyrene styrofoam plate. Commonly used for ceiling installations. Not really all that high end, more marketing speak back in the 70's-80's.
geeze George - poly-planars that takes me back - if I remembered half of what I did in the 70s, I'd probably be in therapy
Well it's not that silly of a suggestion if your intent was to hear music while submerged underwater. Speed of sound in water is about 1000 times air and since density is 1000 greater, you will need a strong motor and lots of power. A sonar transducer essentially. The water will ruin the paper cone, spider and surrounds so it is a bad idea to do it with a Fostex. But the military grade underwater transducer Cal suggested would work well. If you have a cheap throwaway speaker why not try with that rather than a relatively expensive Fostex?
I wondered what the heck the email was about. I knew I didn't post anything. (Note to self) Don't leave the page up while you have a friend over and you run to the store to get smokes... Sorry guys, don't worry he'll pay for this!!!
Hey, I was at a concert recently where they rang a gong then submerged it in a tub of water, sounded pretty cool. I'd say go for it. Please report back.
I once had a book about underwater electronics. There they suggested the use of one of those exciters that you can attach to windows etc to build a simple underwater speaker. They used a plastic salad bowl with a oiece of aluminium sheet used as lid. On the inside of the lid they atttached the exciter.
SPL seems to be limited by cavitation.
Regards
Charles
SPL seems to be limited by cavitation.
Regards
Charles
Hey it was all good for a laugh, and some digging through the dark corners of my brain trying to recall some serious parties held on big sailboats far enough out in the bay to be away from cops, parents, and nosy neighbors that don't appreciate Led Zeppelin at rock concert levels.
It could have been much worse had it been an excited proclamation regarding a side taken on LP vs CD...😱
I had a pair of those. They were red frames and the cone did not have the black coating on them like in the video. Only pair I ever saw and heard. They sounded pretty good for being unique. Probably made smoke come out of them and never seen another pair.
I was once asked to develop a speaker for just this purpose for use in a swimming pool. As I remember you had to stay below 24V as a maximum to stay below the Voltage that could electrocute a person in water. These speakers are used in some sports like water ballet and this is how the swimmers keep time and position with each other. There is a need to use eq as the transmission of high frequency is not good in water if I remember correctly. You can place a normal speaker inside the box on a baffle, like a two chambered box where the second outer chamber, the front of the speaker is contained by a sealed membrane allowing the transfer of sound to the water. These things are used in hotels pools and spas all the time, just not high fidelity as we think of it but still allow music to be played.
Brian,
That may well be the critical voltage but I think the rules are max 24V probably to stay well under the lethal voltage. I think it is the same for the underwater lights, max 24V.
That may well be the critical voltage but I think the rules are max 24V probably to stay well under the lethal voltage. I think it is the same for the underwater lights, max 24V.
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