Help with bi-wirable efficient floorstanding 2.5K

Many thanks for all the inspiring ideas. I appreciate the discussion by Almarg. I may have to rethink room size and power issues.

The Triangles are very attractively priced indeed, especially now. Silverline is perfect for me, but I will have to wait for a used sonata III. I agree that those Canadian speakers are a fantastic value...Mirage is really a good deal for what it offers. Is mirage better for home theatre? I am more into the 2-channel stereo, even though I do use a subwoofer with my current ERA D10s.

...and finally, the Proac Studio 140! I knew that it will not be easy to disregard the Proacs. If I can find a good used pair of 140s, I will go for it. There is a local Proac dealer in Portland, OR, Stereotypes Audio. They are great people. I will certainly take a look. I was mesmerized when I first heard a higher end Proac there.

BTW, anybody have any experience with BC Acoustique ACT line, like A2.5 or A3? They apparently have an interesting adjustable Fostex horn tweeter.

Take a look at the Proac Studio 140 impedance specs: 8 ohms nominal, 4 ohms minimum. Not an ideal impedance curve for SET (or many tube amps).

For tubes, you want a speaker with high sensitivity and a flat impedance curve (with a minimum impedance no lower than 6 ohms).

That's right. With SET amps, frequency extension drops like a stone when the impedance gets much below 6-8 ohms.

What you REALLY need if you keep your current amplification is a speaker made to work well with SETs such as the Zu Druid. They claim 101dB sensitivity (and even if they exaggerate, it's still at least 96 dB which is what you need) and a 12 ohm nominal impedance. The review linked below shows the impedance never dips below 8 ohms.

The list price is beyond your stated budget but you may be able to pick up some used ones. Be on the lookout for something like this. Here's a fairly recent review.

Johnnyb53, I have been looking at that ad. The reason I was hesitating was to be able to put my other amps (SS, hybrid, tube) to use with bi-amping, and play with the possibilities of the sound. As you guys all know, most high-sensitivity speakers like those from Fritz, Tekton, Zu, Sonist, Omega, etc. are single-drivers and naturally not bi-amped.

Tvad, I will certainly pay attention to the impedence curve, rather than the single impedence figure that I have been looking at...More food for thought for me. Thank you.

If the Zu Druid is anywhere near its claimed 101 dB sensitivity, then you shouldn't need to biamp.