SpursGator
Well-known member
Looking at the OP's original need, bookshelf speakers with 92-93 sensitivity. It is important to keep in mind a few things. First, as has already been said, 'normal' bookshelf speakers won't get anywhere near this. So if you find speakers that can do this, there must have been some trade-offs in the design. There is no free lunch with physics. So what you should be asking is, what will I be giving up?
One way to get high sensitivity is to connect additional drivers in parallel, for example. But the cost would be much lower impedance, which would push your low-powered amp much harder, thus defeating the purpose of having highly efficient speakers - it's like turning up the volume. Beware the Klipsches that you found, unless they are 40 year-old Klipschorns (which would work great for you BTW except for the small room part).
Generally speaking, at a constant level of impedance, a speaker can be tuned to a higher sensitivity. The trade off is going to be bass extension. As the sensitivity goes up, the bass roll-off moves higher. And the only way to compensate for lack of bass is a bigger box. You can have a speaker with 98 db/2.8v sensitivity, easy impedance, and good bass, but it's going to be huge. Size, bass, and efficiency - you can't have all three.
With a very low powered SET amp, you are in a specialist corner of hifi where people build and sell some very unconventional speakers. But IMO there are two alternatives that are more realistic than a 93 db bookshelf. One idea (the cheaper alternative) would be to buy some mass-market polypropylene driver-based speakers with a sensitivity around 89-90 db/2.8v. I am thinking about the likes of the Roth OLi1 or Boston A25. These speakers have no real bass to speak of, but they are engaging, lively speakers that cost very little and are efficient and easy to drive.
The other option would be to look for some really well-behaved 90db audiophile speakers. I am thinking in particular of ProAc here (e.g., the Response D Two). They are pricy but sound amazing with tube amps. Since you say you don't play that loud, I think that you will love this combo. There are a lot of ProAcs being driven by tube amps - they are very docile speakers that can do quite a lot with little power.
Hope this is helpful.
One way to get high sensitivity is to connect additional drivers in parallel, for example. But the cost would be much lower impedance, which would push your low-powered amp much harder, thus defeating the purpose of having highly efficient speakers - it's like turning up the volume. Beware the Klipsches that you found, unless they are 40 year-old Klipschorns (which would work great for you BTW except for the small room part).
Generally speaking, at a constant level of impedance, a speaker can be tuned to a higher sensitivity. The trade off is going to be bass extension. As the sensitivity goes up, the bass roll-off moves higher. And the only way to compensate for lack of bass is a bigger box. You can have a speaker with 98 db/2.8v sensitivity, easy impedance, and good bass, but it's going to be huge. Size, bass, and efficiency - you can't have all three.
With a very low powered SET amp, you are in a specialist corner of hifi where people build and sell some very unconventional speakers. But IMO there are two alternatives that are more realistic than a 93 db bookshelf. One idea (the cheaper alternative) would be to buy some mass-market polypropylene driver-based speakers with a sensitivity around 89-90 db/2.8v. I am thinking about the likes of the Roth OLi1 or Boston A25. These speakers have no real bass to speak of, but they are engaging, lively speakers that cost very little and are efficient and easy to drive.
The other option would be to look for some really well-behaved 90db audiophile speakers. I am thinking in particular of ProAc here (e.g., the Response D Two). They are pricy but sound amazing with tube amps. Since you say you don't play that loud, I think that you will love this combo. There are a lot of ProAcs being driven by tube amps - they are very docile speakers that can do quite a lot with little power.
Hope this is helpful.