Hello. I have a pair of Cherry Alethas in near perfect condition. I am the original owner and John Dunlavy built this pair for me personaly and signed them with a gold marker. I live 1/2 mile from the old DAL facility and I used to sell his loudspeakers here in Colorado Springs, Colorado. I do have the original MDF shipping crates (60"x24"x24")and all factory packing. I picked them up at the factory and they were set up by the national sales rep from Dunlavy.
TECHNICAL----FLAT @ 25 Hz.......In previous reviews of the DUNLAVY SC-IV/A, many were amazed after listening to them, and the same feeling is shared when many first listened to the ALETHA, which is able to provide the same accuracy and neutrality, focused images, transparency, and holographic sound. Mr. John Dunlavy had incorporated a unique combination of design features, but with some new, special ideas in speaker design in order to get a more compact cabinet while keeping the same sound quality and bass extention. The Aletha is able to reproduce a FLAT 25 Hz at the listening position with a flat level, and slowly decreases below to 20 Hz . The DAL ALETHA is not what we would call a conventional speaker.
First is it's physical appearance - a hexagonal cabinet with a 25 cm (10") woofer located inside the speaker which fires directly towards the floor. This driver is loaded by the internal closed volume of the cabinet, with the front exit of the speaker loaded by an helmholtz like resonator, radiating single bass wave with a 360 degree pattern. This type of design works very well if the bass is crossed over below 100 Hz, which is the case in the ALETHA, where the cut off frequency between the woofer and mids is 80 Hz. Then 2 x17 cm (6.5") bass/mid drivers are used, along with a 2.5 cm (1") fabric dome tweeter for the high frequencies - all mounted in the "DAL way," meaning perfect acoustic phase relationship between drivers as well as symetrical radiation pattern with a very good control of the stray diffraction. Dimensions are 136 cm (52") from the floor to the top of the cabinet, and the widest part of the hexagon ashape is 41 cm (16").
I will post other ads for many other new/demo/used Dunlavy Audio Lab loudspeakers and powered subwoofers. Email me at ranger426 at juno dot com for details. THX!