High Efficiency, friendly size, reasonable bandwidth and good sound. SET friendly.
Unfortunately horns with any bandwidth are the size of a refrigerator.
So…we have developed a horn ribbon based system which achieves our goals.
The wide band horn ribbon covers from about 600hz to 23khz. The special carbon fiber 10” covers below that, 1st order. System sensitivity is an honest 98db/w (100db in room as spec'd by many speaker manufacturers), nominally 8 ohms. The box is 30L and covers from about 60hz to 23khz in room which will be acceptable for many. How does it sound?
The dynamics from this combo are pretty scary at times. Since the ribbon is horn loaded, wideband and closed on the back (doesn’t need nor use the box) it gives open-baffle levels of transparency and immediacy, and the coherence of a full-range.
So, a stand mount, 30L cabinet which goes 65-23khz at 100db/1w in room – 8ohms and… very SET friendly. Name: Crescendo
There is an option for bass modules – the Crescendo Grande. We wanted a cabinet that could slip under the Crescendos and take the place of the stand. For this a really beefy, quick bass driver with a small VAS was needed, which happens to be exactly what the Dynafone is. The cabinet is about 50L and tuned to cover down to 25hz flat.
Also needed was lots of power to drive the bass modules. Fortuitously, we just received the new Reckhorn A1000 which gives us about 500w in a small footprint. This bass system – 2 x A1000 and 2 x Dynafone and cabinets has no problem keeping up with the Crescendo horn ribbons while at the same time giving up really clean earthquake tones in our 1700s/f shop.
We offer these as a kit with front baffle plate. Fully assembled in cabinets is also available.
Crossover uses extreme quality parts: all film caps, oil paper + copper foil inductors, etc etc.
Download manual here: http://www.diyhifisupply.com/node/921#attachments