can there be speakers that dont use any electricity?

[Slammy1]

Well, he wanted something that did not require an electrical connection, not an alternative driving source aside from electrons. Just requires a little wind up.

 

[sillymofo]

Originally posted by: kermalou

Originally posted by: flot LOL, ok I'm curious, is the no electricity thing for some bizarre scientific reason or for some bizarre religious reason? You can't drive speakers without electricity... what would make them move in and out?? Your only option to create sound without electricity is to find another way of moving air, but there's no way to modulate it fast enough w/out some sort of eletrical power somewhere in the path. You can surely put the speakers physically outside the room and provide a way for sound to get IN.. but I have a feeling this isn't what you're looking for.

it's for religious reasons. the local temple wants to put speakers, but they cannot use electricity (no electricity can be used on the Sabbath).

Hey... no one ever said you can not put speakers OUT SIDE of the temple and blast it. HEHE... that would give it an even more omnious presence because you don't "see" the speakers.... OOOoohhhhhhhh.

 

[Bulk Beef]

Originally posted by: kermalou

Originally posted by: flot
LOL, ok I'm curious, is the no electricity thing for some bizarre scientific reason or for some bizarre religious reason?

You can't drive speakers without electricity... what would make them move in and out?? Your only option to create sound without electricity is to find another way of moving air, but there's no way to modulate it fast enough w/out some sort of eletrical power somewhere in the path.

You can surely put the speakers physically outside the room and provide a way for sound to get IN.. but I have a feeling this isn't what you're looking for.

it's for religious reasons. the local temple wants to put speakers, but they cannot use electricity (no electricity can be used on the Sabbath).

There is always a loophole.

 

[FrustratedUser]

Originally posted by: kermalou

Originally posted by: flot
LOL, ok I'm curious, is the no electricity thing for some bizarre scientific reason or for some bizarre religious reason?

You can't drive speakers without electricity... what would make them move in and out?? Your only option to create sound without electricity is to find another way of moving air, but there's no way to modulate it fast enough w/out some sort of eletrical power somewhere in the path.

You can surely put the speakers physically outside the room and provide a way for sound to get IN.. but I have a feeling this isn't what you're looking for.

it's for religious reasons. the local temple wants to put speakers, but they cannot use electricity (no electricity can be used on the Sabbath).

Looks like you're up $hit creek without a paddle then. Only option is to speak really loud in this case.

 

[Zebo]

You need a mechanical horn like on a old victrola. Google it. Mechanical horn speakers.

 

[Bulk Beef]

Originally posted by: Zebo
You need a mechanical horn like on a old victrola. Google it. Mechanical horn speakers.

Good idea. You guys have a ram's horn lying around, don't you? I thought every temple had a ram's horn somewhere.

 

[Talon]

Do some research on Laminar Proportional Amplifiers. This article mentions them having been used in synagogues. There may be other devices that use the same idea.

 

[Bulk Beef]

Good link, Talon.

This prohibition extends to electric sound- producing instrument such as radio, telephone, microphone, loudspeaker, intercom, earphone and hearing aids that produce sounds intelligible to the ear. This prohibition does not apply to a hearing aid that works on the bone induction method where the sound itself is heard only as unwanted noise but when these vibrations are applied to a specific bone in the ear they are then understood as speech. This type of sound was never forbidden. Furthermore, we have no grounds to forbid it on the basis that we suspect that perhaps he may fix it if it breaks. The reason is that there is a only a remote probability that it will break specifically on the Sabbath and even if it does happen, it can only be repaired at the factory.

See what I mean about loopholes?

 

[Talon]

Also do research on fluidic amplifiers. Here is a starting point.

 

[FrustratedUser]

Originally posted by: Talon
Also do research on fluidic amplifiers. Here is a starting point.

Aahh, found a loop hole there too:

The use of an electrically-powered air pump is per- missible as long as the system is turned on before the Sabbath

Why not turn on the PA system before the sabbath? 😎

 

[her209]

all you need is to find something that can move air. just think how people listened to music before electricty was invented/popular.

 

[Analog]

hydraulic