Reverb Amp or Processor

Archived from groups: rec.audio.high-end (More info?)

On Sat, 17 Apr 2004 18:14:00 +0000, Chelvam wrote:

> Hi Everyone,
>
> Can anyone suggest Amp or processor which can produce reverb signal only for
> speakers? I have seen Some Yamaha model but for the price I could by a
> decent multi channel.
>
> I was just experimenting with my computer sound card and the various level
> of reverb and realized that right amount of reverb actually add more
> pleasant to listen.
>
> And finally, if someone can explain Hafler principle in detail and how to
> use that in two stereo amplifier?
>
> Thanks in advance.

If you have another amplifier laying around, there is an old time hack
that will get you some decent surround sound.

Even if you don't have the amp but have 2 speaker outputs on your
amplifier here is a quick hack.

Take 2 speakers, connect the (-) terminals together.
Connect the (+) terminals to left and right (one wire to each channel) on
your amplifier.

Place the speakers in the "rear".

What you will get out of those speakers is the DIFFERENCE between the left
and right channels and will vary with program material.
IOW mono will give no sound.

If you have another amp laying around (even a cheapeee) you can do the
same thing with pre-amp outs (from the main unit) and hook up the rear
speakers normally.

This will allow you to control the volume of the rears.

Some amps don't like this configuration so be careful!!!

FWIW on some program material the sound is pretty good, but on other stuff
it doesn't do a thing.

The bigger the stereo spread in the source material the better it sounds.

Try some Steely Dan