[sdiy] Speaker Impedance

[Metrophage]

Hi Tim,
Does this mean that the same applies to a speaker plus a resistor? Does
, for example, a 4 ohm resistor in series with a 4 ohm speaker equal an
8 ohm impedance for the output? I was wondering whether or not this was
the case. 
CJ

--- Tim Parkhurst <tparkhurst at siliconbandwidth.com> wrote:
> Hey Rafael,
> 
> If memory serves (sometimes it does, sometimes it don't...), I
> believe the
> same tricks used with resistors will work with speakers. Ohm's Law
> still
> applies. In other words, two 16 Ohm speakers wired in parallel will
> give you
> 8 Ohms. Conversely, two 16 Ohm speakers wired in series will give you
> 32
> Ohms, and so on. 
> 
> 
> Tim (a Starbucks mocha in each hand gets me wired in parallel) Servo
> 
> "Imagination is more important than knowledge." - Albert Einstein
> 
> 
> 
> 
> > -----Original Message-----
> > From: Rafael_Cohen at prusec.com [mailto:Rafael_Cohen at prusec.com]
> > Sent: Monday, May 23, 2005 9:56 AM
> > To: synth-diy at dropmix.xs4all.nl
> > 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,
> usually
> > higher 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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> 
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>  
> 
> 
> 
>
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