Welcome! Need support, you got it. Or share your ideas and experiences.
Return to Planar Speaker Asylum
63.111.2.217
In Reply to: RE: Why More Power? posted by pictureguy on July 07, 2015 at 12:40:13
I don't believe there is a need for more power as you go up in Maggie panel size. The peak power limits are based on excursion and perhaps bonding strength of the adhesive or separation strength of the "wires"
Long ternm performance limits (RMS values) will have a temperature and signal crest factor parameter and well.
Independent of the panel size - my limited experience is that the larger panels are not noticeably more efficient.
"The hardest thing of all is to find a black cat in a dark room, especially if there is no cat" - Confucius
Follow Ups:
Interesting that you think the larger Maggies should be more efficient (which implies they don't need any more power to drive them).
My view is that the 3-way models need more power for several reasons:
1. They have 3 drivers instead of 2.
2. Their bigger bass drivers mean they go down deeper (than the smaller Maggies).
3. Delivering down to 30 Hz sucks up more amplifier power than only delivering down to 40+ Hz.
Andy
| Interesting that you think the larger Maggies should be more efficient (which implies they don't need any more power to drive them).
That's usually the case with conventional box speakers.
As I understand it though the reason for that is matching the woofer response with the mid & tweeters. The mid & tweets are already more than enough sensitive out of the driver but smaller cabinet gives less efficient bass especially if you want extension.
So smaller boxes have to pad down the mid & tweet to match the lower-sensitivity woofer.
Seems that with maggies that isn't the case as much---the mid and tweet are the same, and larger size gives more bass extension and max SPL.
Magnepan rates the sensitity at ONE frequency. However, the amount of power needed from 40hz to 25hz (let's be optimistic here) is probably only 5% or so increase. You'd have to REALLY go some to convince me of 10% or greater.
That the panel size is LARGER means, perhaps, more air resistance? Also, the 20 series is double sided, which MAY mean greater sensitivity? apparently not, by Magnepan spec.
Too much is never enough
| Independent of the panel size - my limited experience is that the larger panels are not noticeably more efficient.
Excepting the desktop Mini Maggie, the larger panels have substantially more surface area for bass, but not for midrange or tweeter.
Post a Followup:
FAQ |
Post a Message! |
Forgot Password? |
|
||||||||||||||
|
This post is made possible by the generous support of people like you and our sponsors: