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I am not so much concerned about the low end extension of the Alphas when they sound this good down to around 40 Hz or so. These have the open, magical sound of Magnepan bass without the low efficiency and limited headroom. The best of both worlds really. I would roll the Alpha off at some point though. Although it sounds very good full range, just play a solo piano recording and you can hear what almost sounds like ringing or blurring of the piano tones. I don't think it is room related. When I threw a .51 choke in series with my two Alphas, they now sound slightly rolled off but still magical.I almost think I stumbled on a discovery here, mating almost full range alphas with a waveguide loaded compression driver - all using simple first order passive xovers! I honestly have never heard better sound.
IMO the digital crossover of the EP CS2 is not only what "makes them work" but is also their "Achilles heel". Spending several hundred dollars or more to upgrade it doesn't make much sense to me ---- "going analog" does though.
I think you are exactly right about the Behringer and the CS2.I guess these are no longer EP CS2 clones. They are more like an Earl Geddes/AudioKenesis design with OB bass. I am hooked on waveguides/compression drivers + OB bass.
I have DE250 coming after Christmas and the Dayton waveguide. It will be interesting to test together with my 4 Alphas. But what this fullrange wave also is opening up is a pairing of the Alphas and for instance Neo3PDR directly at about 2 kHz, like GR Research's OBs, lots of interesting options. .51 will begin rolling off at about 1200 Hz so it should be open for a lot of crossings.
One question, how do you attach the foam plug to the waveguide ?
It became clear that the Alpha’s do have a serious problem with resolution in the midrange. For some of us it may be acceptable, but I am not happy with it. The CS 2 use 48db at 1000hz. Crossing it at a higher frequency degraded the resolution.
Clueless? Or writing for a living in favor of the companies who pay the ads in their magazines?
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