Scott amp update/speaker question


After almost 2 months, I got my Scott tube amp back, all repaired. It is working beautifully, and I am revisiting a lot of music and hearing all sorts of new things - however - it took me trying FIVE sets of speakers to get to that point. What I ended up liking the most was a ridiculous fluke - I lucked into a criminally cheap pair of Yamaha NS 30 T studio monitors, just a couple days ago, and so far this is the pair I like the most with the Scott amp, by far. In addition to exceptional definition and clarity, the stereo stage seems much wider with this pair than any of the others I tried. So my question - I could find almost no technical information about these online: Does anyone have a set, and/or know what their efficiency is? Thanks!
128x128dalehimself
The manual that covers Yamaha NS10, NS15, NS18, NS20, NS30, NS20A and NS30A does not give a sensitivity rating. My guess is they are very efficient. The impedance is 8 ohms and maximum continuos power is 30 watts.

I had excellent results running Living Voice Auditoriums with a Scott LK-150. I also had excellent results with a Sherwood S-5000 on the same speakers.
It's probably NOT the 'efficiency'. Or any sensitive speaker would do.

Rather, it is the phase / frequency relationship which defines the 'goodness' of load. high phase angles will suck an amp dry or reveal an amp which is just good into resistive loads without reference to a 'real' reactive load.

I'd suspect the Yamaha's of being a benign load.

If you had trouble finding just the sensitivity, best of luck with phase.
My original reason for asking, which I probably should have mentioned in the first place - the tech that worked on the amp said I should have speakers that had an efficiency of at least 98 db, but I don't understand what that expression means. Enlightenment?