Thus spake Nick Loscalzo to All:
 NL> I was wondering, what is the cheapest/easiest way to get Surround
 NL> Sound ? And..... the add-on surround sound decoder (sp-91 ?) in the
 NL> Pioneer elite  catalog, what is the price ?
Well, if you want to be /really/ cheap, you can hook up a rear set of
speakers in what is called a haffler circuit (I believe) to produce a
sort of quasi-surrond sound.  I recommend you do this with a tough
amplifier (4€ if possible).  Don't turn it up too loud (more than about
30-40% of full power), or you might blow some internal fuses.
         (Amp)
       €€€€€€€€€€€€€€€€€€€€
       € +L  -L    -R  +R € - speaker terminals
       €€€€€€€€€€€€€€€€€€€€
         €             €
         €             €
         €             €
         €             €
      €€€€€€€       €€€€€€€
      €  €  €       €  €  €
      €  +  €       €  +  €
      €     €       €     €
      €  -€€€€€€€€€€€€€-  €
      €€€€€€€       €€€€€€€
          (rear speakers)
It's not as good as real dolby surround but gives a little better sound
than stereo alone.  Some l-pad volume controls may be useful in
regulating the rear channel volume.  You can also use a separate
amplifier if you have one lying around.  If you're short on speakers,
only one rear speaker is really necessary.
If you can build a subwoofer, those are nice too.
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