Most people don't listen to SUBwoofers past 100hz. So, there is no need to learn "how it works" outside the enclosure's LISTENING range.
You’re right, there’s no need to figure out where/why to set the rev limiter or the variable valve timing on things either
Are you stoned again ?
Mechanics have nothing to do with below 100hz freq response ......
Wait..wait...your sacred geometry ?
Or
The Mandela effect ?
Ohh it's the multiverse !!
Mechanics have nothing to do with below 100hz freq response ......
Wait..wait...your sacred geometry ?
Or
The Mandela effect ?
Ohh it's the multiverse !!
@BP1Fanatic
You have a crossover set at 80 hz and your box has a pipe resonace at 90 hz. If you can’t ‘hear’ that or even acknowledge it then your ‘ideas’ are very suspicious 🤡
You have a crossover set at 80 hz and your box has a pipe resonace at 90 hz. If you can’t ‘hear’ that or even acknowledge it then your ‘ideas’ are very suspicious 🤡
i dunno, I need a dsp to fix mine. maybe im aware of all these things and cannot unhear them? Don’t study your speakers, it’s a curse!😝
bandpass boxes are a mess of time domain issues and in the case of long skinny ones, pipe resonances ? Right?
Do you ignore the most important issues and just pretend the less cone Movement at resonance means less awkward sound?
Do you ignore the most important issues and just pretend the less cone Movement at resonance means less awkward sound?
https://drive.google.com/file/d/1NJ...ZgGJPSLyd_AP6X0jgk_aem_A3UwdQTAPnhMWXlkyjn0_w
its crazy out there..
its crazy out there..
Wow!!!
And Scott did not introduce math formulas there just simplified explanation for an 11th grader!
Did not get anything to click on my brain but was a nice 28 page reading !!
And Scott did not introduce math formulas there just simplified explanation for an 11th grader!
Did not get anything to click on my brain but was a nice 28 page reading !!
(My junk I had handy to measure)
Parallel qw pipes (top)
parallel Helmholtz (bottom)
pipes sure store a lot of energy and ring? 3x Fb is wankered.
@BP1Fanatic , do you not experience something similar in your tapped pipe? I need to measure one of mine that are tapered like yours and compare
Parallel qw pipes (top)
parallel Helmholtz (bottom)
pipes sure store a lot of energy and ring? 3x Fb is wankered.
@BP1Fanatic , do you not experience something similar in your tapped pipe? I need to measure one of mine that are tapered like yours and compare
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Yeah, it’s almost dumbed down enough for me to grasp most of it (sorta)👍🏼👍🏼. (I’m trying)
And THIS is why I could care less what happens above my low pass filter.
Interesting that he started off the paper with a 50hz high pass filter on a BP4. Them audiophiles.
What I had hoped, was that we (you and I) could figure out how our tapered pipe shapes and XO points(or dsp) were helping to minimize the issues in the variety of pipes we have designed, simmed and built.
but, as usual, you’re too busy cheerleading and chanting ‘BP for life’ to even participate in anything subjective or relevant to what actually happens at 90hz (or any 3x Fb frequency) in OUR tapered pipes.
You are repeatingly suggesting an 80hz XO is preventing the 90hz resonance from existing, or are you saying it doesn’t matter because your musical tastes are complimented by a random pipe resonance ?
Neither would particularly make sense to anyone, it has nothing to do with ‘audiophiles, I thought this was simply physics of sound in pipes?
but, as usual, you’re too busy cheerleading and chanting ‘BP for life’ to even participate in anything subjective or relevant to what actually happens at 90hz (or any 3x Fb frequency) in OUR tapered pipes.
You are repeatingly suggesting an 80hz XO is preventing the 90hz resonance from existing, or are you saying it doesn’t matter because your musical tastes are complimented by a random pipe resonance ?
Neither would particularly make sense to anyone, it has nothing to do with ‘audiophiles, I thought this was simply physics of sound in pipes?
There is nothing to study.
YOUR link told US to filter TH's and QW's below 100hz.
I try to design my enclosures to peak at 80hz so whatever happens at 90hz is a non-issue.
I'm making sure everyone knows I'm not trying to create an audiophile (>50hz) enclosure unless specified by request like freddi.
YOUR link told US to filter TH's and QW's below 100hz.
I try to design my enclosures to peak at 80hz so whatever happens at 90hz is a non-issue.
I'm making sure everyone knows I'm not trying to create an audiophile (>50hz) enclosure unless specified by request like freddi.
What kind of low-pass are you using? How steep and where?
I ask because fi the examples in #81 are typical of the above band resonances in your builds, those take at least a 48dB/oct low pass at 90Hz or less, and could still benefit from a sharp notch around 120-125Hz.
(Some incredibly strong resonances! I'd slap a 96 dB/oct linear phase low pass at 90Hz on them.)
did you A/B compared with and without your NOTCH filter around 120-125Hz and did you hear the effect ?
Not to my recollection, and I've been following Paraflex designs from since inception. HR sims were involved almost from the very beginning. The problem is that when I started to create my BOXPLAN workbooks for them, I noticed some mistakes in the sims, and suggested corrections. Build what you sim / sim what you build, and the measured results should be fairly close to the sim'd results. Hornresp does not include the effect of box losses in Paraflex sims, so you're going to lose a little output in the higher resonance spots in the passband.