Searching for the ideal vintage bookshelf speakers.


Greetings Gentlemen. I am looking for the ideal pair of vintage bookshelf speakers. My "listening room" doubles as library and design studio. It is approximately 12 x 30 x 8 feet with wood floors, one small rug, several wooden cases lining the walls, and no drapes.

The speakers will sit horizontally atop two bookcases which are against one of the 12-foot wide walls. Maximum speaker dimensions: 31h x 16w x 12d inches. I will not be buying a subwoofer, so I want speakers that can deliver the broadest and clearest dynamic range possible.

My preference is for sealed box or front vented three-way speakers. I have selected the following prospects: Altec 874A Segovia, Acoustic Research 11, Harbeth Super HL5, KLH Model 5, Rogers Export Monitor, Allison Four and Spendor SP-1.

If you have direct experience with these speakers, I would highly value your thoughts regarding 1) quality of cabinet construction 2) clarity and naturalness of sound 3) warmth vs brightness of tones 4) open vs tight sonic image 5) listener fatigue value and 6) speaker preference for tube or solid state amplification.

I listen to a wide variety of music: medieval, renaissance, swing, beebop, blues, Scandinavian folk, Celtic, organ, opera and orchestral, and a good helping of classic rock.

Many thanks for your ideas. Best wishes.
unclechoppy
I would look at Audionote AN J's or even K's will fit your size they are wonderful speakers and designed to be positioned close to a wall so in your book shelf they will do better then most.
I still have a system with 6 Bozak woofers, 4 Bozak mids and 24 Bozak tweeters that will blow you out of the room. Imaging ? Nah --- not much. Bottom end? Definitely. Satisfaction quotient ? Truly enjoyable ! It provides a LOT of fun but not if you are a true "Audiophile". If you are, you will tear the system to shreds with "informed" opinions ! Relax ! If it sounds good ---- it IS good !

Stereophile reviewed some fully restored Bozak Concert Grand B410s a little over 10 years year. They looked past modern audiophile concerns and were very favorable about these. An excerpt from the conclusion:

Conclusion
You read about speakers that perfectly image but have limited bass, or hyperdetailed speakers that, over time, fatigue the listener. But the Bozak Concert Grand does everything well while not excelling at any one sonic parameter. I believe this is its greatest strength. It is dynamic beyond belief, with gobs of musical detail and harmonic richness. A pair of them are magical in their ability to deliver space and ambience cues, but they image more like what you hear at a concert—not "pinpoint" imaging, but a more blended sound. And the speaker has extraordinary but not superfast bass. The Bozak Concert Grand is the most musically satisfying loudspeaker I’ve heard. It may be the best non-horn vintage speaker you can own.

However, no way would these Concert Grands fit on the OP's bookshelf space. But they are definitely "vintage" in its most favorable connotation.
I totally understand the interest in vintage speakers.  All of the speakers in my house could be called vintage---homemade speakers with Jensen and Altec drivers, Spendor SP-100s, Fulton FMI-80s, and Dyna A25s.  Based on your criteria including the bookshelf mounting, I would highly recommend the Dyna A25 or if space is really tight the A10.  With either tube or solid state amps, the Dynas still sound "right" to my ears, not the very best but they get out of the way and let you enjoy the music in ways that many modern speakers do not.

AR 11 pair would fit most of your criteria.  Very solid construction, excellent bass response, non fatiqueing but natural sound.  They will not deliver a pinpoint image like a pair of LS3/5a properly mounted on stands etc.  The AR11 and most AR speakers were designed for med-far field listening.  IE a seated position 10-15 feet away from the drivers.  They have exceptional off axis response.  They respond well to 50-60wpc of tube power and 100-150wpc of ss power that is very stable into a low impedance load.  The AR 11 represents a transition of sorts.  The 11 (and 10 pi) added newly designed mid and tweeter domes to the classic AR 12 inch 2 way design.  Prior AR speakers, like the 3, 3a (and 2ax / 5) did not provide truly flat on axis response because the mid and tweeter drivers were incapable of providing then necessary spl due to power handling limitations.  The new dome drivers were among the first in the world to use ferrofluid to increase power handling capacity, and spl, resulting in a flat response curve.  A pair of AR11 speakers will be 40yrs old, so expect to either purchase a restored pair, or be ready to have them restored.