[sdiy] Speaker Impedance

[Metrophage]

--- rkmoore at memphis.edu wrote:
> smaller than rated speaker load I think you could always used a 
> resistor of sufficient wattage in series with the speaker to produce
> a lower output.

Precisely what I needed to do for my Kraakdoos. Only speaker I had
which fit the case I had prepared was a 4 ohm unit. I suspect that this
thing would have been loud even with an 8 ohm speaker... but with 4
ohm, it was way, way too loud. So I put a 10k mod pot on one of the
wires to speaker. It's touchy, but it works. 

Got to look in some texts around here to find other ways to tweak the
amplifier gain for the next one.

> To check the impedance of a speaker I just use a multimeter to
> measure ohms.
> 
> Richard Moore

 






> ----- Original Message -----
> From: Rafael_Cohen at prusec.com
> Date: Monday, May 23, 2005 11:55 am
> Subject: [sdiy] Speaker Impedance
> 
> > 
> > Hey everybody,
> > Guess what... it's another newbie question!!
> > 
> > I have some schematics requiring 8 ohm speakers, and in some of my
> > DIY/scavenging I come across speakers of various other impedance, 
> > usuallyhigher than 8ohm.  Everything from 16ohms to 45 ohms... 
> > sometimes computer
> > speakers or speakerphones, etc...
> > 
> > My question is, what do I need to do in order to adapt the circuit
> to
> > speakers of different imedance?  Also, is there a simple way to 
> > test the
> > imedance of a speaker?
> > 
> > Thanks again,
> > Rafael
> > 
> > 
> 
> 


		
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