We're building a radio for my physics class. We have a small coin-shaped high impedance speaker. Which side is positive and which side is negative?
2007-06-22 05:10:46 · 4 answers · asked by cl41r3 1 in Science & Mathematics ➔ Engineering
We're building a radio for my physics class. We have a small coin-shaped high impedance speaker. Which side is positive and which side is negative?
P.S. It's a 20 MM, 150 OHM SPEAKER
http://www.allelectronics.com/cgi-bin/item/SK-215/580/20_MM,_150_OHM_SPEAKER_.html
2007-06-22 05:20:59 · update #1
The polarity would only matter if you have more than one speaker (stereo, 6.1 surround sound, etc.) in the system, where they all have to be in phase. If you only have one speaker, it doesn't matter how you connect your audio amplifier.
For future reference, though, when a positive DC voltage is applied to a speaker with the correct polarity connection, the speaker cone should move "out".
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2007-06-22 05:37:20 · answer #1 · answered by tlbs101 7 · 2⤊ 0⤋
Neither is really better. It really depends on your amplifier. If your amp is rated for 8 ohms minimum per channel, your speakers should not go lower than that. In other words you would not connect 4 ohm speakers to an amp that is rated for 8 ohm minimum per channel. The lower the ohm rating of the speakers the amplifier will produce more power up to the limit of the amp. In theory, you get the most power out of a given amp by connecting speakers that are at the lowest rated ohms for that amp. People get way too worried about ohms and wattage in general. All amplifiers and receivers will specify the recommended ohm and power rating for the speakers. Just go by that.
2016-04-01 11:52:54 · answer #2 · answered by Anonymous · 0⤊ 0⤋
There is no positive terminal. It does not matter. If you have more than one speaker, use the same kind of wire and connect the speakers identically by the color of the wire pairs, that is, if the wires in your speaker cables are one black
and one white, connect the black wire and the white wire to the same terminal for each speaker. Connecting that way will put your speaker outputs in phase with each other.
2007-06-23 11:28:42 · answer #3 · answered by Anonymous · 0⤊ 0⤋
It probably does not matter. That is why it isn't marked.
2007-06-22 05:14:23 · answer #4 · answered by Randy G 7 · 0⤊ 0⤋