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Why do Maggies need a lot of power?

It has been genearally accepted that Maggies (i.e. 1.6s) needs a lot of power. Why?

Mathematically, any 86dB speaker should need only 64W of power to reach optimum listening level (104 dB). Why it's not the case for Maggies? One may say that b/c it has only 4 ohm, but there are tons of low sensibility 4 ohm speakers in the market and they do not seem to have any problems like Maggies. Again, one may say that they need current. I think most of the amp is cappable of 20 Amp and wonder if that 's still not enough? If so how much current are we talking about?

I have seen a few recommendation and review of low power amp to drive maggies (i.e. Cary Rocket amp (40W), or Bel 1001 (50W) and a few more class A amp with range around 50W) sucessfully.

For the one who recommend the high power amp (>200W), how lound do you listen to them? I can't imagine myself sitting next to the speakers that have 200W of power fed into them. It muust be awfully loud to me. On the other hand are we talking about reserve power (head room) that Maggie may need at a cirtain time, not the entire period?

Has anyone really been happy with the low power amp with Maggies, either SS or Tube?

Thanks a lot for the thoughts,

Ake
ake
sean
6,231 posts
 
Ake: I think that there is a VAST discrepancy amongst what many of us here call "average" listening levels. What is "average" to a "rocker" might be "roaring" to a person that listens to chamber music, etc.. On top of that, listening distance, size of the room, types of speakers used, etc... will all vary this equation.

From my personal experience with Maggies, i would suggest using a tube amp that was capable of at least 100 wpc rms or a SS power amp that was at least 200 wpc rms @ 8 ohms. This "should" equate to at least 300 wpc and preferably closer to 400 wpc @ 4 ohms for the SS amp. "Tube watts" tend to come across as being more powerful due to the more "natural" way that they clip i.e. they do not sound near as stressed or grainy when being driven hard. Quite honestly, i don't think that you can have TOO much power with speakers of this nature.

This brings up another dilemma though as many higher powered SS amps do not sound as good as some smaller models do. Much of this can be negated by looking for a manufacturer that uses high quality parts and gain matches all of the output devices. Such designs tend to be of high bias ( Class A or very rich Class AB ) and should deliver excellent sound even at lower volumes. Obviously, these will probably cost a little more, but then again, nobody said this hobby was cheap : ) Sean
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zaikesman
3,017 posts
 
Actually, I was thinking of the word 'average' in the strict sense, as in watts RMS, and the differences that can exist referenced to the peak level, at any listening volume.
gmorris
351 posts
 
I think that you can drive the maggies up to the 3.6 (excluding the 20.1) with a good 100 watt tube amp with high output current such as the ARC VT100 MKII. I have been using maggies exclusively since 1977. Initially, my first high end speaker was the venerable MG2 which was first driven by an ARC D76A (75 watts), followed by the MGIII/MGIIIA which were driven successfully by an ARC D115 MKII (115 watts).

Currently, I am driving MG 3.5s with an ARC VT100 MKII. I have had no problem with dynamics or loudness limitations. Coupled with a stereo pair of Sunfire Signature subwoofers (the blend is seamless and not detectable), I feel that I have a full range system that approximates the performance of some of the expensive full range speakers at a fraction of the cost.
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