I bought all four of mine Schumann Resonator off Ebay. I began tweaking the tweak by adding 50 x 1600uf/16v Rubycon caps to the power supply each SR. This addition was a major upgrade to SQ. I started out using a generic wal-wart 4a-12v linear PS to power the SR. This followed with experimenting with other power supplies; KingREx, Teddy Pardo 4/12, DIY PS, and Paul Hynes SR5-12. The SR5-12 reign supreme in SQ! I know some readers will think its ludicrous to use a PS that cost many times what the SR cost. One listen, and there is no turning back:)
Schumann Resonance 'Tweaking the Tweak'
I have recently been experimenting with an Acoustic Revive RR-77 unit in a variety of stereo and A/V systems and have observed some surprising things:
* The unit has sonic and visible effects on whatever system it is incorporated into, but not always positive. In the case of our Home Theater high end room, it was only positive with excellent source material. A bad video/soundtrack only looked and sounded worse. It was almost like having more sensitive eyes and ears to be more discerning of the quality of the software.
* In our high end stereo rooms the effect was generally positive regardless of the source material, however, tweaking with the unit made surprising improvements. Adding Vibrapods under the box was a step in the right direction. Adding a large Mapleshade Heavyhat made a rather substantial improvement. Together the two tweaks took the AR-77 to another level entirely.
I am an 'avid tweaker' and have tried a good many tweaks over the years with mixed results. The Schumann Resonance is perhaps the most intriguing of any that has come along. I would enjoy comments by other AudioGon members with respect to your ongoing experiences with this unusual tweak.
* The unit has sonic and visible effects on whatever system it is incorporated into, but not always positive. In the case of our Home Theater high end room, it was only positive with excellent source material. A bad video/soundtrack only looked and sounded worse. It was almost like having more sensitive eyes and ears to be more discerning of the quality of the software.
* In our high end stereo rooms the effect was generally positive regardless of the source material, however, tweaking with the unit made surprising improvements. Adding Vibrapods under the box was a step in the right direction. Adding a large Mapleshade Heavyhat made a rather substantial improvement. Together the two tweaks took the AR-77 to another level entirely.
I am an 'avid tweaker' and have tried a good many tweaks over the years with mixed results. The Schumann Resonance is perhaps the most intriguing of any that has come along. I would enjoy comments by other AudioGon members with respect to your ongoing experiences with this unusual tweak.