Search results

Funny how McGowan beats around the bush and even states things proven untrue. A shame, but probably he has more audiophool clients than professional clients, so this is just his undeniable financial interest speaking. Also funny how he acts as if really dependable tests don't exist. Even though...

A very loooong, long article about a very well understood topic. Of course we don't want our speakers to vibrate (good speakers hardly do), of course we don't want the vibrations to be transferred to our listening environment if they still DO vibrate. And of course spikes are not...

Tx. Shady

The question that remains object of study in my mind is: Why, how, and how much, would the 'RMS' of non linearities resulting from one forward and one backward movement (w/respect to motor assembly) of two cones, by two drivers simultaneously (and all this twice), be an improvement over the...

So actually, in hindsight, that IS right. I just didn't read that correctly. Yes, one is moving outward away from the motor while the other is also moving outward, towards the motor. So moving in phase (with respect to the cabinet, the signal, the soundwave they produce) and out of phase with...

Lots of thoughts, but Shady J finally answers the question by reference to the Watne Parham explanation. THAT is why turning one of the drivers around makes sense. And for those in confusion: NO, the air pressure inside the chamber the drivers share is NOT constant, but, as could be expected...

That can't be right, the drivers would cancel out each other's SPL, the sub would hardly make any sound. Like the article says: the drivers are out of phase. Since they are also placed front to back, they are IN PHASE moving with respect to the cabinet.

Wait, Jeffca may have answered the question i just posted, although i'm not sure why facing both cones outward and connecting drivers in phase wouldn't also improve non-linearities. Supposedly, reading the assumptions of the technology, the non linearities are similar from one sample of the...

What is not really clear from the explanation of the push pull alignment, is why one of the drivers should be facing 'inward' (cone facing into the cabinet). The air pressure utilised to moderate cone motion, where both drivers basically are connected by their shared air 'spring' (i suppose the...

Why is it so unlikely someone would loop a certain song they like? I regularly play music all day or all night, say 12-16 hrs. in a row, and sometimes i have a song on 'repeat' and forget about it. I don't see, with millions of listeners, how that would be such an unlikely event. Quite the...

Never found any reason for the bad rep of negative feedback, other than the fact it contains the word 'negative'. Negative feedback (as i presume Putzeys' article will also state, probably the article of his i read long ago) is one of the most positive things engineers have at their disposal to...

Hi Gene, Very true and relevant summary of factors playing in this unfathomable field of DIY (over-)enthusiasts, indeed, and phrased with your usual pinch of humor, tx! However, one factor about strongly pronounced opinions, where it comes to loudspeakers as opposed to other components, you...

About time some official institution will step in and expose all these fraudulent cable companies and sue them for reimbursement of unrightfully charged invoices. Really an outrage EE's are told they 'know nothing' by die hard followers of the cable religion, who themselves are, in fact, the...

Back again, yet another thing fromthe comments above i'm unclear about: "Proper bracing significantly reduces excursion amplitude, which reduces SPL." Is that right? A tweeter has less amplitude than a woofer, but does that also mean it has lower SPL? I would suppose that, at least for...

Even though the rubber itself is of course pretty pliable, as opposed to rigid, and would by itself prsumably have a very low resonance. Tightly mounted to the plywood however, it raises the resonant frequency of the plywood panel. I applied it also because, at the same time, it lowers the...

"Adding thickness to panels add weight, which lowers the frequency of resonance." (editorial note by Bamberg). That is really confusing! I can tell you that a thicker, heavier panel will be stiffer (all else being equal), which makes the pitch when knocking on it decidedly higher, not lower. A...

Atmos doa yes or no? Steve Munz's article clearly illustrates how Tom Andry is overly pessimistic. All five arguments Steve mentions are valid, but the fact Atmos is an 'opt-in' feature rather than a market tyranny (like some we've seen before) really says it all. Don't like it, want it or need...

And btw, after being fired upwards, doesn't the wavefront become uncontrollably wide, since the distance it travels will generally be longer than with direct firing speakers? It seems to me this would only be practical in very wide listening areas, lest the four atmos channels would end up...

Atmos Directionality Why not use a pivoting foot with a small coaxial driver in a spheric or egg-shaped enclosure (possibly with waveguide style baffle, or the mid doubling as waveguide for the tweeter)? This would make for more flexible aiming, while solving the mechanical problems associated...

Double blind testing Dear Gene, Although i applaud, and largely agree with, your arguments on DBT, i have to disagree it has no (or 'little') place in audio. Especially the snake-oil and science fiction you so boldly fight, can easily be retributed by double blind testing. Not in loudspeaker...