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In Reply to: RE: Which full-size Maggies are you considering ? posted by John Elison on December 20, 2024 at 23:02:31
The 3.7s would sound nice with their true ribbon tweeters. Just like your Mini Maggies... but gigantic.I know you already have nice subwoofers, but you might want to consider one or two of those DIY GR Research open baffle subs for the most seamless blending of sound... if in fact you'll need subs at all with those big panels.
Have fun, good luck !
Edits: 12/20/24Follow Ups:
The 2.7i is slightly smaller and the 1.7i is even smaller still. I'm thinking about one of these other two models instead.
Thanks,
John Elison
just give them room behind to breathe. Heard a nicely driven pair in a smallish room.
Edits: 12/23/24
I really want the 3.7x speakers. If I could get the 2.7x speakers with flat bottoms like the 3.7X speaker, I might consider them. Of course, I want the true ribbon tweeter, whatever that means. I don't actually know what a ribbon tweeter is, except that everyone thinks its better. ;-)
The smaller ones tilt back or stand completely vertical. Aftermarket stands are available to raise and tilt all models backwards.The 3.7i is already tall enough to sound "room-filling" as-is ? And are heavy enough to fall over if tilted back... I guess ?
Anyway, it appears that Magnepan might prefer that the 3.7i speakers would NOT be tilted backwards...
Edits: 12/24/24 12/24/24
I want the true ribbon tweeter, whatever that means. I don't actually know what a ribbon tweeter is, except that everyone thinks its better.
Part of what has to move with the mylar diaphragm with Magneplanars is the conductive wire. Ribbons avoid that.
> Part of what has to move with the mylar diaphragm with Magneplanars is the conductive wire. Ribbons avoid that.
How do ribbons avoid that?
I know that Magnepan's have copper wire glued to their mylar diaphragm because I took the cover off a pair some years ago. Some of the wire had broken free from the diaphragm. However, I think some of the new Magnepan speakers might have aluminum foil attached to the mylar diaphragm instead of wire. I thought I read that somewhere, but I can't find it now. Have you heard anything like that?
Thanks!
It's used in the bass and midrange sections of the three-way models, and mid/bass and tweeter sections of the two-way models.
Mark in NC
"The thought that life could be better is woven indelibly into our hearts and our brains" -Paul Simon
Although, I don't think the term "quasi-ribbon" refers to foil conductors instead of wire conductors. I think it simply means that the diaphragm has conductors glued to it, instead of being a true ribbon. My Mini Maggies have wire glued onto the mylar diaphragms, yet Magnepan still refers to them as quasi-ribbon drivers. Only the tweeter is a true ribbon driver.
Nevertheless, I'm glad they switched from wire to foil, because not only is it probably more reliable, it probably has lower mass, too. I just hope it can still handle the current as well as wire. It would be nice if they used silver foil.
Thanks!
No, the "QR" designation applies specifically to the method of using foil glued to the mylar instead of wires. They came up with the term to differentiate it from the older wire system that was used on both bass and tweeter sections previously. The Magnepan website has explained this since its introduction of the QR technology.
The foil, to the best of my knowledge, doesn't have significantly lower mass than the wires; they kept it the same because the impedance needed to stay the same, but it probably has a bit lower distortion because the foil is adhered to a larger area of the Mylar than the wires are.
I've read discussion in the past on various forums about using other metals as conductors, but the consensus has generally been that aluminum has the best combined mass/conductivity characteristics.
I've been a Maggie guy since 1998, and it's been head-spinning to try to keep up with all of their changes in methods.
Mark in NC
"The thought that life could be better is woven indelibly into our hearts and our brains" -Paul Simon
Edits: 12/24/24 12/24/24
the foil is conductive. Not sure. The 20.1s and 3.7s I've heard had a really sweet top end. The earlier "dot ones", however, sounded to these ears like a collection of separate drivers.Click here for a general diagram and terminology.
You'll get detailed answers over at MUG, aka Planar Forum. Click here for more detail from Magnepan.
Edits: 12/23/24
That's exactly correct. With the true ribbon tweeter, the radiating diaphragm is also the conductor. It's about 5 feet long and about 1/4 inch wide, and is extremely light and thin. It's aluminum foil that is significantly thinner than kitchen-type aluminum foil. The electrical contacts are at each end, but there are small, alternating supporting dots of silicone rubber along its length on each side attached to the magnet structure. The resolution and inner detail in its range are marvelous.
Mark in NC
"The thought that life could be better is woven indelibly into our hearts and our brains" -Paul Simon
Edits: 12/23/24
.., for 10 milliseconds of backwave return, a pair would make a great pair of room dividers...Used as dressing screens for the sake of modesty, a change of trousers during listening sessions has never been easier !
Edits: 12/23/24 12/23/24
that was determined empirically by measurements for the most linear bass in the bottom octaves. A mentor taught me the "Rule of Thirds" placement which I've found quite useful for minimizing room modes.
I don't have that latitude with the smaller ones in the family room, but still walk behind them on the way to the east side of house.
Pics in gallery.
Closer to 20 milliseconds of back-wave delay, and in line with my own findings in "the rule of thirds" for speaker placement.
Should you ever decide the 1.7s are too small, Maggie 1.7 speakers have many fans. So, not very hard to sell the 1.7s to move up to the 2.7.Try to find a local buyer for a home pickup deal in order to avoid box shipping, that's all...
Edits: 12/22/24
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