Have recently moved the extractor fan in the shower to put it in a better place and have been left with a nice circular hole in the ceiling which gave me an idea. Maybe I could drop an old Pioneer car speaker into it and run it off the hi fi, save just turning the volume up in the living room. It doesn't look like a cardboard cone, more graphite type material but the impedence is 4 ohms compared with 6 ohms on the hi fi so would I be right in thinking if I added a 2 ohms resistor to the +ve line all should be dandy?

You probably wouldn't need to modify the speaker imo. You can't change the impedance by adding a resistor (ohms law doesn't apply to speakers) so just connect it up and see how it sounds.

I've had speakers in my dining room, kitchen and bathroom ceilings for years. I run them off a seperate stereo which has an option for two pairs of stereo speakers. One pair which are in the dining room is off one speaker channel and the other two pairs are wired in series off the other channel. They are just standard 25w Pioneer car speakers rated at 4 - 8 ohms. I usually just have the radio on but it's nice to have Christmas carols playing quietly in each room when family and friends come round at Christmas!
Cheers
Jon

[Edited on 10/9/06 by jonbeedle]

You will need a speaker that is waterproof, otherwise the steam will knacker the paper cone inside.

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Originally posted by RazMan
You probably wouldn't need to modify the speaker imo. You can't change the impedance by adding a resistor (ohms law doesn't apply to speakers) so just connect it up and see how it sounds.

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However, none of this is realy relevant unless you are actualy expecting audiophile quality sound from a random car speakers jammed into a hole in the ceiling

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