So, you're saying that "crossover noise" is completely without meaning? And if it has meaning, why are you hesitant to define it? You gave that as your principal design goal. How do you know that you achieve your goal if you can't even specify what the goal is?
If it's merely a marketing term you've latched onto, it's OK to admit that. And there's also nothing wrong with saying, "A flat impedance will remove much criticality from amplification choice, and that's the raison d'etre here."
Noise floor of what, specifically?
Yet that was given as the principal design goal...
In any case, a flat impedance curve can be a good thing. My own speakers stay +/-1 ohm from 200Hz to 10k and work fine with any amp I have in the house, so I can't really disagree with that aspect. This was always a sales point for Magneplanars as well.
What are your speakers SY? Diy or commercial product? I`ll try it with my speakers, to see is there a noticeable difference in sound.
But what will all the people building mighty meaty monster monoblocks(tm) do? You'll upset them if you start putting out easy to drive designs 😛
Halfway between. Multiamped and reworked version of NHT 3.3, active between woofer and the rest, passive between midbass, midrange, and tweeter.
NHT 3.3, ok, I had a quick look on Stereophile graph. Do you think there is a benefit in lowering hi freq. impedance? I guess it`s less of a problem if you are driving it with a transformer coupled (tube) amps...
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I've driven it both ways and not heard much difference. Then again, I suspect that a 1dB change in level at 15k would not be something I can hear at my age. Midrange is a different story...
Correct me if I'm wrong.
So, regardless of the revolutionary aspects claimed, as I understand the flow of Qi in a circuit, what you call "electricity," 😀 😀 the current to voltage phase angle at the amplifier may be flattened, but the current to voltage phase difference at the drivers remains the same.
The caps and coils added buffer the current flow, much like "Power Factor Correction" used in wall power applications.
Am I right?
Best,
Erik
So, regardless of the revolutionary aspects claimed, as I understand the flow of Qi in a circuit, what you call "electricity," 😀 😀 the current to voltage phase angle at the amplifier may be flattened, but the current to voltage phase difference at the drivers remains the same.
The caps and coils added buffer the current flow, much like "Power Factor Correction" used in wall power applications.
Am I right?
Best,
Erik
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What is the impedance like below 200 Hz? That is where there is almost always a problem. And i suspect there are no current amps in the house.
This work of Joe's is aimed at providing a loudspeaker that allows people to play with current amps, that it works with any amp is a bonus.
dave
Not really, no. Fc is 110Hz, acoustic LR4 highpass, and the variation between tube and transistor amp is less than 0.5dB at crossover.
Biamping is a common way of allowing for trying out a current amp (as long as the HF has flattish impedance) by driving the problematic bass impedance with a separate voltage amp.
But your loudspeaker gets disqualified as an example of what is being done here.
dave
But your loudspeaker gets disqualified as an example of what is being done here.
dave
I merely proffered it as an example of a speaker that has a relatively flat impedance and is thus amp insensitive. There are others (like the Maggies I mentioned). It's a reasonable thing to do in a design, but there's nothing new about that. My curiosity was piqued by the claim of some new notion about "crossover noise," but that turns out to be merely marketing.
Yes your speaker has commendably flat impedance in the higher frequencies, but does so by ignoring the place where the biggist common issues are.
"noise" is a placeholder. No marketing happening here that i can see. Just an honest attempt to provide an oft missing piece to allow for playing with current amps.
dave
"noise" is a placeholder. No marketing happening here that i can see. Just an honest attempt to provide an oft missing piece to allow for playing with current amps.
dave
Not so much, no. With any of the amps I've used with it, it runs dead flat in that area. There's some cleverness in the design there.
No, it was cited as the principal design criterion. It turns out to be meaningless. I'm not enthusiastic about marketing buzzwords.
Can you post the bass impedance. Ar eany of your amps current amps (what is of interest here). Reveal the clever tricks?
dave
dave
Stereophile's review had the impedance curve of the stock version.
No current amps, but a couple of tube amps with high-ish impedances. Mine's a bit different in that I removed the passive high-pass to the mid-bass and rejiggered the cabinet volume to get a B2 as part of the acoustic LR4.
No current amps, but a couple of tube amps with high-ish impedances. Mine's a bit different in that I removed the passive high-pass to the mid-bass and rejiggered the cabinet volume to get a B2 as part of the acoustic LR4.
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