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A question for Maggie owners

I am curious about Maggies in the $3-4K range. I currently have Von Schweikert VR-4JRs fed by Wyred 4 Sound 500 monoblocks, a Modwright pre-amp and a computer based source. I have always been intrigued by planar speakers and a friend of mine sold them out of his store until the store closed. I know the entry level Maggies have a return guarantee but I am sure that they are not everything Maggies can be. What are your thoughts on switching speakers? I am used to the bass of the VSAs, but have a very musical Hsu subwoofer to pair with them. I am satisfied with my system and I am asking out of curiosity and can buy the Maggies to try but don't know if it is worth the effort.
tgrisham
dividebytube
50 posts
 
just a quick note - as said before, Maggies love power.

I'm running 1.6QRs and got a very noticeable improvement by bi-amping. I run 250Ws of Threshold power on the bottom and use a tube amp on top. Bass is rolled off on the tube amp since it doesn't need to reproduce those frequencies anyways.

The sound difference with the tube amp in place was jaw-dropping.
magfan
1,583 posts
 
At the stock 600hz crossover and with 250watts to the bass, I'd estimate needing maybe 150 watts to the top-half, so the amps run out of 'steam' at about the same time. That would be about a 60:40 power split...

Keeping in the Threshold scheme of things, if I had VERY deep pockets, I'd biamp with a pair of Pass amps...The INT-30a and the XA30A. I doubt I'd ever even get the meter to flicker out of 'a'.

And given the nature of the Magnepan beast, I'd do a few minor wiring changes, too. Get rid of the fuse and maybe install real binding posts to rid myself of those pesky banana plugs....which I've been putting up with for >30 years!
eldartford
4,262 posts
 
When I was setting up a biamp rig for MG1.6 I discovered that the high end needed a more powerful amp than I had expected. The trick is that I was looking at the amp's ability to swing instantaneous voltage peaks. not at power. Since voltage capability generally goes along with power you end up with a more powerful amp. You don't need the continuous power: just the voltage. Because of the way amps are designed you have to buy power to get the volts.
magfan
1,583 posts
 
Pass amps are the only ones I've seen which call out voltage as a 'spec'.

How much more power? My 'guess' of 60:40 is based on the following link, which makes reasonable sense..

http://sound.westhost.com/bi-amp.htm

My guess of 150 watts @ 4 amps (mid/tweet fuse in 1.6) is about 38volts....certainly that should be within reason for any 150 watt amp? No?
The Pass X-150 is rated at about 50 volts.....and stereophile got 200@8 out of it during bench tests.
eldartford
4,262 posts
 
Magfan... The fuse in the MG 1.6 is for the whole speaker; not just the tweeter.

A "4 amp" fuse will carry a lot more than 4 amps for brief intervals like music peaks. All fuses are, to a degree, "time delay" fuses. Blow time is a function of current. Depending on the fuse type, it will carry its rated current, or a bit more, forever. Near instantaneous blow time is typically twice the rated value.
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