The designer's job becomes extremely easier by using 4th order Linkwitz Reilly crossovers which give you everything except phase coherence at the XO point. They introduce 360° / 1 full cycle, which is considered by some, including someone recently posting on this forum, to be zero. The full-cycle time error can be corrected with digital signal processing, if one is in the digital domain. The "new Thiel" pulled a AD-correction-DA jujitsu. It works except for that last truth of ultimate rightness of doing it right in the analog domain. I suspect the Magico to be doing in some fashion what I described, but I don't know anything about it.
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Magico Q7 Mk II. They are $223 KI’d like to think these would outperform a $15k speaker! But the SQ gap, if any, is not anywhere near the $$$ gap. All the more so if the crossovers are upgraded to premium parts. Maybe some of you CS3.7 or 7.2 owners will try Dueland or Path resistors. Anyone wanting to explore the outer limits with Dueland caps, however, will certainly need to go outboard (see Jim Smith’s outboard http://jeffsplace.me/wordpress/?p=5464). In the meantime, Tom Thiel’s parts choices will be significant quality upgrades while still in line with Thiel Audio’s performance/price sensibility. |
Hi Ronkent, I have 3.7s and am also using a Rel subwoofer. Mine is an older REL Storm III. I like the fact that it takes a high level signal from my power amp and seems to mate very well with the Thiels. I have the Gain at about 1/4 power and the crossover set at a low 23dB to just add that foundational Bass under the frequencies that the 3.7 can produce on its own. Curious as to how you have your REL setup.. crossover, gain, placement? Thanks |
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