X250.5 and Magneplanar 20.1 - diyAudio
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Old 5th August 2008, 11:02 PM   #1
skidave is offline skidave  United States
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Default X250.5 and Magneplanar 20.1

I was a happy man Monday when I was able to listen to a pair of MG 20.1s connected to a Pass X250.5. First, I have owned a pair of MG1.6s for 10 years and have never heard (or seen) the 20.1s. Then, when I saw the Pass amp connected, I was thrilled. It was a great few minutes of listening. I only wish I could have taken the set home!

Thanks to Nick and Greg at Audio Connection for letting me listen www.audioconnect.com.

Nelson, great products and thank you for your support with the DIY audio community.

Dave

PS, My Zen amp does not do much for my Magneplanars...but does great with my Tannoys upstairs!
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Old 11th August 2008, 09:54 PM   #2
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Speaking as an owner of an older set of Magneplanar Tympani IVs, I would suggest that you consider building a set of Alephs. For better or worse, the Magneplanars are not paragons of efficiency; they take more power than a standard Zen can produce. Depending on your desired listening levels, you might also take a look at Nelson's A-75 and some of the First Watt designs. I can't see anyone getting by with less than 50-75W on Magneplanars. At least, not for anything more demanding than a string quartet or solo vocalist.

Grey
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Old 12th August 2008, 07:15 PM   #3
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I agree with Grey. I own a pair of Magnepan 1.6QR's and just love them! Simply amazing speakers.

I drive mine bi-wired with a stereo A30. Nelson recommends the A-75 for Maggnie's in prior posts.

One of my best friends has a facory Aleph 5 with his Magnepan 1.6QR's and they also sound great. The additonal power is nice for his larger room. After listening to his set up, I simply had to have a pair. Once listen to a baffless set-up, I could not go back to my Vandersteen 2ce's. The poor Vandy's are just decoration in the corners of the room.

My own listening room is ideal for my set-up 12x17 feet. The room is lively and did not require as much power.

The Zen is definately under powered for Maggnies. I've heard the larger Maggnies sound wonderful with the larger Pass Labs X amps.

-David
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Old 12th August 2008, 09:01 PM   #4
gl is offline gl  United States
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I'm glad to see a couple of responses here.

I use a pair of 115W DIY Aleph-X monoblocks with a pair of stock MG3.6's and I'm very happy with the sound. (See the AX100 thread). If you go over to the Audioasylum and Audiogon forums the prevailing opinion is that you need a lot more power than I'm using in order to achieve optimum results with Maggies. Maybe so. But so far I'm happy. Yes I would love to hear my speakers with a high powered Passlabs solution. But then again that just might make me unhappy with what I have.

At last years Burning Amp event Nelson told me that he too had once owned MG3.6's. (Maybe he'll add a comment here.) At the time we were talking about active crossovers. I for one am very much looking forward to the upcoming Firstwatt crossover offerings/projects.

Graeme
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Old 12th August 2008, 09:45 PM   #5
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The Maggies like big hardware, if not big power. The End.

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Old 24th August 2008, 03:15 PM   #6
skidave is offline skidave  United States
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Big power is right. I listen to all types of music and power is a must. I use updated original Ampzillas for my 1.6s (bi-amped). [People have mixed opinions about these amps, but I did the updating and have not had any issues, plus they look cool.] I would like to build an Aleph or one of Nelson's other designs, but time does not allow at the moment. (I like tube stuff as well and time does not allow for much of that either).

I agree about looking forward to possible crossover ideas / projects. I have seen posts around about modifying the 1.6 internal crossover, but I have not done anything. Have any of you? My opinion (for what is worth) is the best way to tweak crossovers is with a very good outboard unit adjusted to your individual listening room. Since I don't have a very good crossover, I have left my internals alone. I do wish the connectors on the rear panel were made of a better material. I have notice over the years mine have tarnished a bit.

Dave
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Old 3rd October 2008, 10:56 PM   #7
amp_guy is offline amp_guy  United States
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i know this is an old thread but just wondering if anyone has any further thoughts on running maggies with pass amps.
Iam running mgII's rewired and sitting at about 5.1 ohms, they are powered with the venerable Pass A40 which is of course all bipolars not a mosfet in sight. Would like to run something more up to date . don't get me wrong the old A40 does quite well with my 12b4a line stage . but you know how it is the amps are allways greener in the other pasture.
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Old 28th October 2008, 05:09 AM   #8
amp_guy is offline amp_guy  United States
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how about bridged F5's for maggies?
any opinions
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Old 29th October 2008, 09:25 PM   #9
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You might want to look into the Aleph-X.

Grey
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Old 3rd November 2008, 09:00 PM   #10
amp_guy is offline amp_guy  United States
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hmmm.... aleph x that qualifies as big hardware
Which version do you reccomend, the higher power or the original? I wonder if Mark G finished his .
Does anyone have any pcb left?
Too many questions sorry
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