The Yin-Yang Audio Amplifier Test
Regarding stuff like this
https://www.bing.com/videos/riverview/relatedvideo?q=”HI-Res”+tube+car+amp
I’m wondering if anyone has accomplished tests in which the positive lead of the speaker is driven by Primary Amp Under Test (PAUT) while the negative lead of the speaker is driven by the Secondary Amp Under Test (SAUT), both amplifiers being fed the same input signal.
In cooperative connection — PAUT positive output driving speaker positive input; SAUT positive output driving speaker negative input — ideally, no output would be audible as the amplifiers’ output powers would theoretically inversely and perfectly match, therefore holding the speaker cone(s) steady to cause no audible output whatsoever.
In competing connection — PAUT positive output driving speaker positive input; SAUT negative output driving speaker negative input — total power output (across the speaker) would double and statistical aberrations (of audible performance) would theoretically be relatively offset or compensated if not somewhat subdued, as the ‘ audible evils’ of one would theoretically ‘balance-out’ the ‘audible evils’ of the other; however, in the case of extreme audible evils any such balancing would immediately be or promptly become impossible.
With an A/B coooperate/compete ‘phase’ switch at the output, this ‘yin-yang’ test configuration might provide a quick way to discover (in an human-meaningful way) any ‘audible horrendicity’ which may be present.
