Single driver speakers without the pitfalls?


In researching SET amps, I have learned a lot more about the sort of high efficiency speakers that they are typically paired with, including single driver models like Omega, Blumenstein, Teresonic, etc.
The advantages of these designs are well acknowledged: coherence, imaging, high-efficiency and so forth.
At the same time, there seem to be equally well acknowledged drawbacks to these designs: Limited bass response, rolled off highs, and a harshness or "shout" in the upper midrange.
Some designers, like Tekton and Zu, seem to take the approach of getting the best of all worlds by joining a wide range driver to a tweeter of some sort. (To some extent, my Reference 3AM De Capo monitors take this approach.)
What I'm curious to learn is whether you think there are any single driver, full range systems that transcend the above limitations.
Eager to hear your thoughts.
rebbi
Every speaker design is a based on compromises, and how you react to those compromises, what your room is like, and how loud you listen will determine whether or not you like the single driver sound. I'm setup in a small room with a near field arrangement. 80 db at the listening chair is very loud for me. Most of my listening is done at lower levels.

If I was in a bigger room and if I liked to crank it up and if I wanted to really get quality bass below 60hz, I would not be happy at all with my system. For me, these are compromises I can easily live with.

After having lived with single drivers, I'm always shocked when I place conventional speakers in my systems. My first thoughts are always gosh, the sound is so muddled and for lack of better words kind of phasey and echoey sounding. I hear things from speakers that I'd lived with prior to my single driver setups that I'd never noticed at all in hundreds of hours of listening. I suppose I'm reacting to crossovers, sound coming from multiple sources, voices being played at the same time by two different sources and maybe drivers operating out of phase with each other. Things I suppose my ear had become accustomed to in the past and my brain learned to ignore.

That said, with conventionals I can start to now turn it up and appreciate the bigger more visceral sound attainable with multiple driver setups. It's nice, but not a trade off I like to make. I've played with my single driver setup in a larger room, and then all of the sudden, I can start to hear the flaws and limitations as volume requirements are now completely different.

Live music is big, impactful and can be full of low frequency energy. It also has a speed and a presence; an immediacy. For some reason, it is that speed and directness that I react to, and I get it with single drivers more than multiples. Like I said though, I think it works for me because of my room size and listening levels and I can completely understand how it's not a trade off that others can't appreciate.
Its probably more than just the speakers. More amps can shine with what they do better when a flat extended low end is taken out of the picture. Very low power tube amps the most. You have to have very large and very efficient speakers, likely horn loaded, to do flat extended bass out of a few watts. There is simply no other way. Most music occurs in the midrange though so getting it just right there can go a long way. Not everyone needs 20-20k hz flat at live like listening levels. Its also a good recipe for maintaining one's hearing. So lots of benefit to outweigh the trade offs.
Rebbi,

I believe I was the first in your SET thread to suggest building a kitÂ…Your Welcome :) I am so happy you are going down the kit route and will follow your blog with interest.

Just read through this post and my thoughts turn like a few others to Tannoy. I heard the Kensingtons a few years ago and will never forget that experience. Seemed like pure music flowing out of those speakers.
My thoughts also naturally turn to Audio Note Speakers since you are building an Audio Note amp. None of these are single drivers but they do sound gooood!
Regards Jet
I'm taken but not surprised to read all the negatives about single driver speakers. Yes, they have their limitations but some are executed quite nicely. I had some Hornshoppe Horns that were very satisfying for a couple of years but I decided it was time to move on and I got some Tonian Labs Tl-D1s that are basically, a single driver speaker augmented by a super tweeter and it's been all I've needed since.

The designer, Tony Manasian, also had some great PHY based speakers that would likely keep me happy for a long time even if he didn't have the tweeters.

It all depends on what floats your boat and what you float that boat with. Calm waters are an easier load for a smaller, lighter vessel while rougher waters are handled by an entirely different, more robust vessel. Synergy is required for everything to work properly.

All the best,
Nonoise
The right 2 way system with a compression driver would open up your ears and eyes. Small room, yes. Directness, yes. Much lower distortion, great dynamics.