how can i get a 1hz or 10hz signal?

Question

a download too play on a cd i saw o video of it on some klipsch towers on you tube it made no noise just movement.

http://www.youtube.com/watch?v=NDrXYjWjC0s

Answer 1

If you want to inject a test tone you need a function generator for each channel. It will produce any freq you want( within its designed range). You will need to make a few special cables.

CAUTION: this is best left to professionals since you can/will damage a loud speaker if this is not properly hooked up. As far as demonstration purposes it serves none. Any injected tone in a loud speaker will create movement, it is what it does with it that counts. I believe the speakers you would attempt this with have around a150Hz low cutoff? Not wise to do so.

Answer 2

Hi .Well first you have to have speakers that can move their cones with a10 hz signal.Since there is no musical sound waves that low you have to generate a sound that has that low frequency cycle,some sort of humming sound,like turntable rumble which is usually less than 20 hz.

In 1972 we had our first HI.FI.Show in Australia and i remember seeing two loudspeakers made by Bose.It was the first 901 series (manufactured in 1968) containing 9 full range 4 inch drivers in each encloser.They were producing a 20 hz note and you could see the tiny drivers moving in and out with these huge excursions but no sound.They were driven with a Bose 500 watt/channel amplifier and they were advertised as having unlimited power handling capacity.

Answer 3

Unless you have a REALLY HIGH END sound system, don't even bother. Most sounds systems cut out below 20 Hz. There's no real point to reproduce anything lower, since you can't hear it anyway (other than that it looks cool watching the speakers move so slowly).

There are tone generators used for scientific applications that can generate the required frequencies. You'd probably do better connecting the tone generator directly to the speakers, rather than trying to go through your sound system which won't handle the frequencies anyway.

Answer 4

If your speakers don't roll off at that freq. (almost all of them do), you can test it with a freq. sweep track on a test CD. Stereophile makes some of these, as well as Ayre Electronics. The professionals use a device called a sine wave generator, which creates a pure sine wave, at any desired frequency, but those are quite expensive.
Parts-Express.com will have what you need.