[So There]

Congratulations, James:

Best wishes for many happy hours of listening. With your gear and the large room they need, the big Maggies should sound incredible.

I had a pair of Apogee Duetta Signatures, supplemented by a hefty Velodyne ULD-15 sub and driven by McIntosh gear. The sound was incredibly three-dimensional and engaging; as one example, on Ludus Danielis (The Play of Daniel; Hungaroton HCD 12457-2), one could hear the Schola Hungarica choir advancing from deep into the soundstage behind the panel speakers. Yet, the Mac MC2002 power amp (rated at 200/300wpc, 8/4 ohms) peaked often and ran out of gas driving the low-impedance Apogees. No such problem with your 28Bs.

Go at it, James: research, research, research.

Rich
_______________
Whiney Napa Valley

The means — Bryston SP3 | Bryston 6B-SST(C) - L/C/R; 4B-SST(C) - surrounds; 4B-SST(C) - rears | Bryston BDP-2 Digital Player; BDA-2 D/A Converter; Oppo BDP-105 | Paradigm Reference Signature S8 fronts; C5 center; ADP surrounds; S4 rears; two Velodyne DD15 subs | APC S20 | Pioneer Elite PRO-1130

[James Tanner]

Congratulations, James:

Best wishes for many happy hours of listening. With your gear and the large room they need, the big Maggies should sound incredible.

I had a pair of Apogee Duetta Signatures, supplemented by a hefty Velodyne ULD-15 sub and driven by McIntosh gear. The sound was incredibly three-dimensional and engaging; as one example, on Ludus Danielis (The Play of Daniel; Hungaroton HCD 12457-2), one could hear the Schola Hungarica choir advancing from deep into the soundstage behind the panel speakers. Yet, the Mac MC2002 power amp (rated at 200/300wpc, 8/4 ohms) peaked often and ran out of gas driving the low-impedance Apogees. No such problem with your 28Bs.

Go at it, James: research, research, research.

Rich
_______________
Whiney Napa Valley

The means — Bryston SP3 | Bryston 6B-SST(C) - L/C/R; 4B-SST(C) - surrounds; 4B-SST(C) - rears | Bryston BDP-2 Digital Player; BDA-2 D/A Converter; Oppo BDP-105 | Paradigm Reference Signature S8 fronts; C5 center; ADP surrounds; S4 rears; two Velodyne DD15 subs | APC S20 | Pioneer Elite PRO-1130

Ah yes Apogee's ---- owned all the models back in the 70 and 80's

James

[Tympani]

Fantastic speakers, James! Get ready for many hours of musical bliss. But...before getting there, many hours of adjustments in speaker placement! Especially in a multi-media setup. Using the big Maggies with a large video screen forces some audio compromises, no doubt.

My room is almost identical to yours in size (16x25x8) with a smaller 65" plasma. Speakers sounded best further from side and back walls, with tweeters "inside'" Better sound, but very tight viewing angle.

Compromises, but ultimately worth it!

Enjoy the journey.



Dan

[James Tanner]

Thanks for the tips Don - will give it a try. They are about 4 feet out now and I tend to like a wide stage so experimenting with position 

I have the MG1.7 the MG3.7 and now the MG20.7's   I think I will keep the 20.7's as my panel reference and sell the others.

James

PS - did you find them changing with use?

[Tympani]

Very much so. It took a few weeks (!) for the bass to flesh out. I probably wouldn't do much fine tuning till then. Mine are 20's, I suspect the bass panel break-in is similar with the 20.7.
By the way, my BDA-2 and BDP-2 are a joy. They really show the Maggies' true potential.

[SteveFord]

Before you sell the 3.7s perhaps you could borrow a set of demo DMWs to see how the 3.7/DMW combo compares to the 20.7s?
I know quite a few people would be interested in that comparison.

[James Tanner]

Before you sell the 3.7s perhaps you could borrow a set of demo DMWs to see how the 3.7/DMW combo compares to the 20.7s?
I know quite a few people would be interested in that comparison.

Hi Steve

The DMW'S are not really a Sub correct?  It just helps reduce the standing waves etc. in the room

James

[SteveFord]

That's correct, they're two chunks from the 20.7 with a crossover.
Wendell demoed them to good results recently with the 3.7s and then they have that How Much Bass Do You Need? ad.

[Chicago]

Those look like speakers for serious listening.  Enjoy

[James Tanner]

That's correct, they're two chunks from the 20.7 with a crossover.
Wendell demoed them to good results recently with the 3.7s and then they have that How Much Bass Do You Need? ad.

Hi Steve

The 20.7's in my room go down to about 35 at this point so I think adding 2 of the Model T subs which go to 17Hz should work very nicely.  I am going to break the 20's in for a few weeks then see how it goes. 

James

[Woolz]

So James, how are the 20.7s?

[Elizabeth]

I have my car 'more than half paid for'.. So I am looking forward to getting it paid off. Then my next audio purchase, May be a pair of 20.7s.
They would be a little big for my place, but I think it will be fine.
I would still just use my 4B-SST². It barely gets warm now.. And I never play very loud.. So I am feeling fine that it will have all the power I need for the big 20.7s.

James.. Do you think the aluminum side rails contribute sonically to the 20.7s? (3.7s too)
Do they help make the speakers stiffer than the wood side rails?

[James Tanner]

I have my car 'more than half paid for'.. So I am looking forward to getting it paid off. Then my next audio purchase, May be a pair of 20.7s.
They would be a little big for my place, but I think it will be fine.
I would still just use my 4B-SST². It barely gets warm now.. And I never play very loud.. So I am feeling fine that it will have all the power I need for the big 20.7s.

James.. Do you think the aluminum side rails contribute sonically to the 20.7s? (3.7s too)
Do they help make the speakers stiffer than the wood side rails?

Hi Elizabeth

I have talked to Magnepan a few times on this and I assume as you do that obviously aluminum is stiffer and stronger than wood panels BUT according to the experts at Maggie the moving mass in the Magnepan speakers is so incredibly low that the structure around it (either wood or aluminum) makes no difference at all to the integrity of the panel or the sound. 

james
 

[James Tanner]

So James, how are the 20.7s?

GREAT!!!!

james

[medium jim]

Hi Elizabeth

I have talked to Magnepan a few times on this and I assume as you do that obviously aluminum is stiffer and stronger than wood panels BUT according to the experts at Maggie the moving mass in the Magnepan speakers is so incredibly low that the structure around it (either wood or aluminum) makes no difference at all to the integrity of the panel or the sound. 

james

James, I have been trying to sell this to all of those who believe that you need to modify Maggie's to make them stiffer to make them sound their best...it is what it is!

Jim

[James Tanner]

James, I have been trying to sell this to all of those who believe that you need to modify Maggie's to make them stiffer to make them sound their best...it is what it is!

Jim

Hi Jim

Yes i assume Wendell and the boys have done the testing to see what resonances there are and how low down in level relative to signal levels.

Maybe if I get ambitious I will drag one to our anechoic chamber and put some accelerometers on the support panel and run some signal through the speaker diaphragm and see what we can measure?

james

[geowak]

Hi Folks

A new pair of Magnepan MG20.7's showed up today at my door - should be a fun weekend 

james

They just showed up at your door...NICE!  Once a stray cat showed up at my door when it was raining....that's about it.

[medium jim]

Hi Jim

Yes i assume Wendell and the boys have done the testing to see what resonances there are and how low down in level relative to signal levels.

Maybe if I get ambitious I will drag one to our anechoic chamber and put some accelerometers on the support panel and run some signal through the speaker diaphragm and see what we can measure?

james

James:

It would be interesting!

Thanks,
Jim

[Vipers]

Hi James,

I have just been pointed in the direction of this thread, how have you been getting on with the 20.7's? Are they now your main listening speakers?

I am massively impressed with the 12's and 1.7's that I have just bought on for demo, I can only imagine how awesome the 20'7's are, surely they don't need a sub though do they though? I am really surprised at the level of bass from the 12's and 1.7's to be honest, not something I was expecting from a panel speaker.

[sfraser]

Ready - Set - Go 



james

James, how exactly does the wife phrase it when she calls to tell you that the delivery man just dropped off 2 big ass box's in the front hallway? : )