Ultrasound Hornblower

[RichP714 3,163]

Very interesting site; the Hornblower utilizes transmission lines for the bass freqs and claims imaging and transparency superior to ribbons.

 

    multipole technology

   

    main site

 

[elgrau 89]

Like the "no x-over" design (and rationale). I see no prices quoted anywhere on their site...I guess if you need to ask/see, you cannot afford! Plus shipping cost from Italy; fgitaboutit!   I'll stick with my sphere's and 1000's (both with no x-over's except "natural" via v-coil and one cap)...

 

But from reading the "accoustic transmission line" dissertation and the material on Ultrasound's site, I'm beginning to better understand/appreciate why the EPI 1000's (with just four 8" woofers) are situated in a 72" x 16" x 16" box/tube!

[RichP714 3,163]

Yep; transmission lines can be VERY nice; most of the damping is physical, not electrical, so the amplifier's damping (or lack of it) evidently doesn't effect the overal system Qts. Often, in bass reflex designs, a compromise is made between under-damped and over-damped, leaning toward 'more bass' while the t-lines are usually aligned for critical damping.