[T2] Hafler speaker connection

[c.dreike]

Anything for more power. Our buses need all they can get!

Chris


On 7/2/2017 1:30 PM, brian rush wrote:
> 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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