I haven't heard it. I don't think my drivers have such resonance, or the crossovers keep the sound away from them. Other drivers or speakers I haven't heard, may have it. Since you are the ultimate expert on multiway forum.
Wait. There was a radio I owned briefly that made big bass burps of one tone. Trashed it.
Many mobile audio installations have the dreaded one note bass. I live on the corner and all day long cars drive by my house and go "BOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOM BOOOOOOOOOOOOOOOOOOOOOOOOOOM BOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOM." One and only one bass note. You can hear it four miles away. This is what most of the public considers "good bass."
I like to look at the woofer's midrange resonances. Less means easier crossover. This has limited me to paper and treated paper cones. It works for me.
hi yes it is a normal parallel xover
the only peculiar thing is that the inductor is not connected to the plus terminal of the woofer as usual
this sounds very good to me and I wonder why they are not more popular
I have to study them They sound promising
I am focusing 2 ways solutions
3 ways are way too complex for me
thank you again
what I had in mind are IMD tests with multitones signal
to give an example for a woofer covering the low range up to 2 kHz i would use 60-120-400-1000 Hz test tones at 95dB
i think that a test like this could be the king of the tests
and very few agree
i would select a woofer looking at its frequency response Qts cumulative spectral decay and IMD
Even without listening to it
IMD and HD are the result of the same nonlinearity. They are different but the same.
CSD is just another way of showing response, since a driver response is more or less minimum phase.
This can be changed, so how important is it?
OK but I would like to see the results
i can't buy all drivers to test them
i need a selection criteria
and i would love to have a driver with the lowest distortion possible just that
but only Accuton shows that and they are too expensive
yes you are right So only csd would be enough
this I don't understand really
FR is the main test always
Ok, perhaps look at one with a shorting ring...
https://www.diyaudio.com/community/...istortion-speaker-drivers.294787/post-5234239
So only response would also be enough. Flat response has no ringing.
You can buy a woofer with a bumpy response. You add EQ and it is fixed. No problem.
i see that i have no right to get a driver's datasheet mentioning its distortion
probably nobody cares about that clearly
this again i don't understand really
what a fast spectral decay has to do with flat response?
this is not fair
the real audiophile hates eq and electronic xovers deeply
that would be too simple
some equalisers have even an auto eq feature that means just pressing a button
still low distortion is nice to have imho
Small amounts of harmonic distortion at low orders is difficult to hear and not a significant problem. If you want to reduce speaker system distortions you need to look at other things instead of nonlinearity.
Resonance will also show a variation in the response, like a peak. If all frequencies are the same then there is no resonance in a minimum phase system.
Some resonance you can not EQ.
Some resonance you can EQ.
You can EQ minimum phase issues like driver resonances.
https://www.diyaudio.com/community/...fix-resonance-or-ringing-to-advantage.352796/
"real audiophile" That makes me chuckle.
In the real world, the empirical world of science and rationality, equalization is indispensable as a tool. "Real audiophiles" expect speakers to perform miracles without equalization, while ignoring stuff like room acoustics. It's just silly.
How would you compensate for room acoustics without equalization? Just change the speakers out until you have a good fit. If that's the way you want to go, it's your money.
I get the last decibel out of my 8" two-ways by using equalization. I compensate the bass with a shelving equalizer to extend the response from 80 Hz to 40 Hz. Then I use a 36 dB/octave high pass filter @ 20 Hz. You can say what you want, but it is a demonstrable fact that my heretical scheme lowers distortion and increases max SPL. The result is clearly audible.
The woofers have "shorting" rings. This lowers distortion and also lowers inductance. It makes the speaker more useable at higher frequencies, allowing higher crossover frequency.
You've been given a whole lot of good advice in this thread that you ought to think about. If you don't like the advice of actual engineers that use empirical science to arrive at their conclusions, then you can have a marketing professional explain to you why equalization is bad.
Actually, many popular speakers like Bose, Fischer, and more "generic" brands have used series crossovers for decades. There's good reason to do so. You get more our of fewer parts (like close to12 dB/octave from one capacitor and one inductor in a 2-way), and it presents a friendlier impedance curve to the amplifier. It works great but maybe the traditional parallel crossover might be a little more precise.
Wise to stick to 2-ways. Way easier for beginners and for a smallish speaker quite doable.
Here's a driver that will make your life easy.
https://www.parts-express.com/FaitalPRO-6FE100-6-Professional-Woofer-8-Ohm-294-1150?quantity=1 Look at the graphs. Flat to 4KHz, about 16 ohm impedance @ 4 KHz, one peak @ 5 kHz. This is what I look at. I'm thinking about the crossover when I'm looking at woofers. 3.5 KHZ second order crossover would be simple.
The driver's affordable, efficient, nice xmax, has "shorting" ring for low distortion and lowered inductance, models 54 Hz F3 in a 0.6 cubic foot vented enclosure. It's on my radar and I will be getting 4 when they come back into stock.
I'm looking for superior midrange clarity in a high SPL 2-way for use with or without a subwoofer. These speakers are intended for "pro" use so I expect they'll deliver.
Don't know if that helps but that's how I look at the driver. Datasheet graphs, xmax, how they model. That's a start.
https://www.parts-express.com/FaitalPRO-6FE100-6-Professional-Woofer-8-Ohm-294-1150?quantity=1 Look at the graphs. Flat to 4KHz, about 16 ohm impedance @ 4 KHz, one peak @ 5 kHz. This is what I look at. I'm thinking about the crossover when I'm looking at woofers. 3.5 KHZ second order crossover would be simple.
The driver's affordable, efficient, nice xmax, has "shorting" ring for low distortion and lowered inductance, models 54 Hz F3 in a 0.6 cubic foot vented enclosure. It's on my radar and I will be getting 4 when they come back into stock.
I'm looking for superior midrange clarity in a high SPL 2-way for use with or without a subwoofer. These speakers are intended for "pro" use so I expect they'll deliver.
Don't know if that helps but that's how I look at the driver. Datasheet graphs, xmax, how they model. That's a start.
hi i agree with you but they say that any processing of the signal is bad on principle especially digital processing
they accept dac because they cannot avoid that
i like always better the easier way
i say that i will keep your valuable advice in mind
but I am still in an initial phase i. e. drivers selection
how did you select your woofers that is what i am trying to understand
i need to select a woofer able to get to 2 kHz keeping a good bass
i usually look for flat frequency response up to 2k and lowest Qts
I would love to get also low distortion of course
i like the Visaton al200 but it got quite expensive at 200 euro each
i would like to stay around half that more or less
tweeters will not be a problem
i am thinking to use plate amps that i can get from other speakers
even cheap powered monitors have decent amps inside
the worst parts are usually cabinets and drivers
there is where savings are made
Select some woofers with desired parameters (like Qts). Then look at the graphs in the datasheets. Simulate them in desired enclosure. Think about where and how you'll cross them over. Done correctly this really narrows it down.
Speakers are going to distort. Shorting rings will reduce the distortion. Operating the woofer within its xmax will reduce the distortion. This is all up to you as the designer.
Speakers are going to distort. Shorting rings will reduce the distortion. Operating the woofer within its xmax will reduce the distortion. This is all up to you as the designer.
hi thank you very much I am looking to the brand offers now
they seem targeting the PA sector
i wonder if a more Hifi driver would be enough
i will never go above 95 dB 1 meter at home i guess
hi and thanks again
i will do so Maybe i am exaggerating the differences
i have a sympathy for metal cones but they are much more expensive
when i hear that a cone should act as a piston i think that engine pistons are made of metal and not plastic
fiberglass is promising
I look at the specs. You should too.
This driver is probably more "hifi" than many drivers marketed as hi-fi.
Metal cones typically have sharp resonances that need to be dealt with. Many ordinary paper cone drivers have such a smooth and natural rolloff they can be used without a crossover.
I fail to see how efficiency is anything but a virtue.
i see and thank you again
you recommended to look here then
https://faitalpro.com/it/products/LF_Loudspeakers/
Which one do you like?
Here's a woofer that you could maybe use instead of the Visaton (which looks very nice). https://www.parts-express.com/Dayto...ference-Paper-Woofer-8-Ohm-295-577?quantity=1 Similar to my 8" woofer (which is discontinued). It will pack a punch and you can cross it over @2 KHz with minor issues. It's a lot cheaper than the Visaton too, if you can get it in your market.
Here's a woofer that you could maybe use instead of the Visaton (which looks very nice). https://www.parts-express.com/Dayto...ference-Paper-Woofer-8-Ohm-295-577?quantity=1 Similar to my 8" woofer (which is discontinued). It will pack a punch and you can cross it over @2 KHz with minor issues. It's a lot cheaper than the Visaton too, if you can get it in your market.
hi thanks this looks perfect
very nice model from a great brand
low qts and fs good coil size good frequency response
i hope the distortion will be low as well? 🙄
i will ask about the best place to buy it in Ue to avoid taxes
i think it would be perfect for my needs
i have some pairs of tweeters unused
d28 and from Seas
but tweeters are not an issue
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