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How about if you ask Danny Richie how resistors work and if he uses them in loudspeakers or not? I'm sure he can explain it to you. Maybe you'll respect him enough to listen to what he has to say about it.
If everything were so easy and explainable or measurable then we all already had perfect systems in our rooms.Every thing leaves a finger print in the signal, how it performes or sticks out is another part.Also many of us have different predictions of how it shoul sound.I think and many of us that adding resistors is not a good idea. Why then bothering with the impendance of speakers if we could simply add resistors to fix it? Why a lot of ribbons are driven by autoformers to hoist the impendance and not with resistors.If you add a resistor your effiency goes down , with this you also degrade the dynamics in a part of the driver which was perfect before the tweak?! How about that? Most of the harshness comes from bad positioning in the room, backwaves form the front wall, tv in between the speakers...., and with a bad amplifier not capable to drive the low and middles when a lot of power or stability is needed. Thats when the harshnees sticks out. Only my opinion.
If everything were so easy and explainable or measurable then we all already had perfect systems in our rooms.[ . . . ]If you add a resistor your effiency goes down , with this you also degrade the dynamics in a part of the driver which was perfect before the tweak?! How about that? Most of the harshness comes from bad positioning in the room, backwaves form the front wall, tv in between the speakers...., and with a bad amplifier not capable to drive the low and middles when a lot of power or stability is needed. Thats when the harshnees sticks out. Only my opinion.
The entire idea of adding the resistor *is* to make the tweeter's efficiency go down. That's what makes the tweeter quieter. And room treatment in the same frequency range would have the *same* effect on dynamics and efficiency.There is no reason, technical or otherwise, that you shouldn't use the tweeter resistors that come with the Maggies. Speakers come with tweeter level controls because rooms don't have them. I'd take Magnepan's advice, though, if you need the 2 ohm resistor your room is too live and you should add some material to it. Also, shelving down the tweeter may produce an undesired midrange cut. Electronic equalization is better, particularly with a two-way like the MMG's.
Enough already with the insults. You know nothing about me or my background. All I'm saying is adding the series resistors to the mini Maggie alters its tonal balance. It's nothing but a bandaid, and one should seriously look at positioning, the room, and electronics before taking the lazy way out.
Well put Josh. That would seem obvious, wouldn't it.This thread has taken on a surreal quality. I mean, for crying out loud, if you're a speaker designer tasked with mating a 92db efficient tweeter with an 86db efficient woofer, how else do accomplish the goal without adding a resistive attenuator in the tweeter path? You ain't gonna fix that problem with room treatments and speaker positioning. In the MMG case it's not a 6db difference...more like about 2db....but the basic issue is still there.(Assuming EQ is not an option. Many egophiles would declare EQ "removes" information also.) Cheers,Dave.
Who implied the Magnepan speaker design is "deficient?" I don't like the implication that there's an implication. This thread is going from surreal to downright weird. Magnepan understands the issue well. If you read the owners manual for many of their speakers you'll find this statement:"The Magneplanar Quasi Ribbon Tweeter is very efficient in its total "energy dispersion." If the surrounding walls are exceptionally reflective, the overall perceived acoustical balance will be tipped towards a "hot" high end. Attenuation is performed through insertion of a simple non-inductive resistor is series with the tweeter."How much more clear does the POSSIBLE need for an OPTIONAL resistor need to be made?It seems some in this thread would prefer hanging drapes all over their listening room vice adding a simple resistor. I see no problem with that option either.....but let's not be blaming an attenuation resistor for mysterious filtering action.Cheers, Dave.
I offer this as an experimental alternative to the in-line resistor, try inserting a piece of 8ga. THHN solid core wire about 6 or 8 inches long in place of the resistor. Start with the 8ga. piece first and if the effect is too pronounced switch to the 10ga. The procedure is to start with 8 inches of 8ga. and trim to length, the shorter it is the less of the effect you have. This is kind of the opposite of a non-inductive resistor but there shouldn't be a perceived loss of dynamic attack. Lowes or Home Despot has this wire by the foot.Scotty
Has someone implied that there is a mysterious filtering action going on?That implication is nearly as mysterious as the filtering action itself. All kidding aside, from what I could tell they simply recessed the top end a bit which I believe is what they're designed to do if you have a bright room and/or source components.
Steve,It's been mentioned more than a few times that resistors "remove a lot of information." Is that not an implication of some sort of "filtering action?" I used the term "mysterious"......sorry about that. However, since no one has yet answered my query (from a page or two back) of HOW said resistor "removes the information" I still believe it's a "mystery." Speculation and subjective analysis are fine.....but we always have to keep in mind that's ALL they are.Cheers,Dave.