[T2] Hafler speaker connection

[brian rush]

I still have my Hafler DH-200 power amp (and tuner) from my college days.
MOSFETs (Metal-Oxide Semiconductor Field-Effect Transistors) and really low
distortion. Maybe I should wire it up to the bus!

On Sun, Jul 2, 2017 at 1:14 AM, Robert Mann <robtmann7 at gmail.com> wrote:

>      One of the more genuine 'something for nothing' capers, attributed to
> one D. Hafler, adds a 3rd speaker connected across the +  *OR*  the —
> output terminals of your stereo.
>      Expounded complexly: <https://en.wikipedia.org/wiki/Hafler_circuit>.
> The simplest exposition is that out-of-phase material, normally largely
> 'wasted', is emitted by the central Hafler speaker.
>       That is a well-proven cheap augmentation to a stereo sound system
> such as most have in their Buses.
>        I can add that my bus radio/cassette is stereo, but with only 1 wire
> to each speaker  -  the other wire from each audio output is grounded as is
> 1 terminal of each speaker.  When I slap a cheap 5" old speaker across
> those two single-wire outputs, and adjust the placement of the 3rd speaker
> and then the stereo balance knob, the result is 'poor man's quadriphonic',
> a very worthwhile improvement in quality (& volume).
>
> Minimalism & economy forever  😃
>
> Robt Mann
> '73 1600dp Devon
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