SET amp w/Neg feedback?

Atmashere,
I am sure what you say is theoretically correct.
I have had the opportunity to use amplifiers with variable feedback.Experimenting with the amount of feedback is very interesting.Certainly too much detracts from the sound.Most noticeable is the collapse in depth and precision of soundstage when too much is applied.
However to my ears a small amount of feedback gave a much more controlled and natural sound than no feedback.
P.R.A.T. was much better.

Jtgofish, if you have a speaker designed using Voltage Paradigm rules, then what you experienced is absolutely right. We have had similar experiences.

A speaker using Power Paradigm rules will often work better, including the bass, using an amplifier without any feedback at all. Obviously such a speaker is designed expecting a different set of rules from the amplifier.

Atma - how do I know if my speakers are designed with voltage or power paradigm? (EgglestonWorks Fontaines)

Rockadanny, it all has to do with the intention of the designer. In general, if the designer uses tubes its probably a Power Paradigm speaker he created. Voltage Paradigm designers usually use transistors. That will answer the question about 95% of the time. Beyond that, its a good idea to talk to the designer and/or read any white papers he may have written, or simply ask what sort of amplifier he recommends.

The equipment matching conversation that is all over high end audio is a direct result of the conflict of these two paradigms.

Ralph;is there a speaker that performs well in your opinion that operates within both of paradigms you mentioned;just wanted to hear your view on those types of speakers.