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In Reply to: RE: Janszen zA2.1 new review posted by M3 lover on August 13, 2013 at 11:03:58
"With the help of a friend, I ran full room frequency sweeps..."
Who knows - Maybe he's better qualified to review speakers. :)
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My ears are the only measuring device I own. My prior speakers were Maggie 1.7s. Those and the JansZens are both rated down to 40Hz on paper. There is where the similarities in bass production stop.
I needed my 15" Velodyne sub with the Maggies. At thier rated limit they were in fact pretty much done. At the JansZens rated limit there is still quite a bit of reach, except subject to rolloff. I too am skeptical that the JansZens can reach to 25Hz +-0db. They do not produce bass like my Velodyne sub, but despite having the same lower limit on paper as the Maggies, my ear says they win the checkmark for all aspects of bass handling.
The absolute measured reach of the bass is not that important to me as how it sounds. The JansZen's bass quality is every bit as clean and tight as with the Maggies, but with the ability to punch much better. Mid bass has better weight. To be fair, the JansZens are more money and should sound better. Even against the Maggie 3.7s which I have heard many times I still prefer the JansZens.
I'd like to listen to these. Q .. how narrow is the sweetspot? Compared to both Maggies that you mentioned?
The sweetspot is quite generous with the JansZens, perhaps 3 feet wide. The monopole delivery however also allows for excellent stereo imaging completely off axis. I have two chairs in my listening room, the sweetspot and the other chair off to the left actually outside of the left speaker. It's a small 13' x 12' room. Even in the side chair you get full stereo effect. With the Maggies that chair only allowed you to hear the left speaker, and the sweetspot was more narrow.
David Janszen has set the panels (2 per speaker vertically) I believe just slightly off axis from each other to increase the dispersion. This approach seems to work perfectly and does not diminish imaging. The only other fully flat ESL panels I have heard have been the King Sound and Sanders. The Sanders beam the tighest sweetspot ever, and The King Sound kind of matched the sweetspot of the Maggies. The sweetspot and the overall sound stage delivery is simply very nice with the JansZens. Room setup is very flexible.
Especially in the bottom end. My current speakers are rated down to 40 Hz on paper, but the in room response with room grain, allows them to produce useful bass well below 30 Hz. And not much I've heard can match them for bass punch and slam. I've also heard the Maggie 3.7's, and although I love the way they sound, I could not live with them without a sub woofer. My guess is they drop off sharply after 40 Hz, and the bass they do have, although very tuneful and tight, lacks weight and impact.
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Edits: 08/16/13
Nice woodworking on those speakers. I don't recognize them. What are they? With all those drivers I don't doubt they give some amazing impact.
They were custom built by Rick Craig of Selah Audio. They use a 45" ribbon tweeter from Newform Research.
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