Hi Matt, Kevin S here from GSG Audio Design in Los Angeles. Thank you for the information in this episode. FYI for you and the audience, all of our ported subwoofers have ports designed to keep air velocity at 20 m/s or less. If we can't hit 20 m/s or less on a ported design....then the design doesn't move forward as a GSG kit or fully finished subwoofer. Additionally, at this point we have over 60 different form factors available for 15,18, 21, and 24 inch drivers, in both ported or sealed options, so we can deal with nearly any scenario, customer desire, etc.
I've also been in the DIY game for decades and confirm the superiority of sealed woofer enclosures in high-end systems. Literature from Martin Colloms and John Dunlavy greatly influenced me - they talked about better group delay, better transient response, and better integration with room-gain. And in my own listening experience I always found them to sound more natural. Also putting ports on the front of the enclosure aims chuffing noises at the listener, weakens the front baffle and creates diffraction effects.
Thank Matt for another informative video. I've always been the type of person that respects other people's opinions and different points of view. I've learned a lot from watching your videos on the subject of home theater systems. As a home theater enthusiast I would like to say that I'm running a 5.1.2 setup with an all ported speaker system including ported subs(4) and I love how it sounds. Never had issues with speaker integration. I also have never heard any port chuffing or port noise and I listen to -13 to -7 MV . I also admit that my system is not a high end system.
Matt, your comments on port resonance being a problem at any SPL level is interesting. Was there another video you've done that explains that phenomenon in more detail?
Actually it looks like you covered this more in your industry consensus on mixing ported and sealed subs video. But interesting topic that I think could make a good dedicated video.
Appreciate your content and expertise. There is no free lunch I suppose with the extra output of ported subs. I thought your explanation made a lot of sense in the context of high end theater
Ported - passive radiators - sealed - infinite baffle or whatever. All I want is accurate bass that is 95% in every cubic foot of my room. A cannon shot, a crash, a kick drum or a T-Rex stomp should sound real if recorded and mixed properly (VERY doubtful ever). I am asking for too much? It seems impossible. What is it going to take? 20 sealed subs all over my small room. Including on/in the ceiling and floor. Low frequencies are a high priority problem and it sucks! hahaha!
I've never heard port noise or port chuffing. I watch at -10db with a 8db harman room curve. Thank God for my ported 16inch which is just as powerful as like 3 sealed 16s.
What about partially plugging ports? I'm having good results with partially plugging ports in bookshelf speakers in small rooms. Plugging the ports fully destroys the bass response too much but partially (with like an O shaped plug with a hole in the middle) they sound fine.
Just a guess here but you can't simply plug a sealed subwoofer; main reason is that the enclosure size is not tuned AT ALL for it. Look at any sub manufacturer that offers the same sub/amp ported vs sealed and the sealed is like half the size.
What I don’t understand in the sealed vs ported vs horn debate is this. The point should be highest output/lowest distortion, right? Group delay is inaudible to anyone who’s not an integrator unless under strict A/B comparison. I totally understand where you’re coming from and I agree with you that sealed does sound the best but there’s an enormous financial difference for the same results. A sub whose port noise is masked by the content (a well designed ported sub) always has less distortion and higher SPL than its closest priced sealed sub competitor. However, you take a dual 21” ported sub from GSG (13hz tuning) and you match it up to a Perlisten D215s. Who wins in that scenario in SPL/Distortion? I know the Perlisten is basically one of the best subs on the market but at $10k, what do you gain in real-world content over the GSG sub mentioned above? Real content meaning, not CEA testing. Just movie watching hitting 115db peaks at the RLP. Idk. It’s hard to imagine that the Perlisten is worth it when talking about DBA setups. All the SPL masking from the other speakers surely negates any superiority the Perlisten will have. I’d love to have one but I just could never justify the cost.
Mr Poes,if I get sealed subs for 35hz and below frequencies, are there benefits to getting multiple subs for even distribution? In another videos comments you said there’s no benefit outside of loudness, but I didn’t understand this because there are nulls below 35hz.
I'm not familiar with the comments of which you speak. However, yes, ... below a room's fundamental modal resonance (1, 0, 0), there's no performance advantages to be had except output. The modal region is where multiple subs can facilitate minimizing the magnitude of peaks/dips in freq response. Theoretical example; If one's room was around 14 feet, in the longest dimension. Then below 40hz, there's no freq response smoothing benefit. Only headroom performance is to be gained. 40hz = ~28' wavelength (~max size wavelength to freely propagate within a 14' dimension)
@@DeanLee-e1g With an approximate longest dimension of 28', your room could theoretically benefit from multiple subs for modal smoothing down to around the 20hz range.
ported or passive radiator design can be fun for a while, but i can not live with them. if i buy brand finished or DIY build any kind if subwoofer or speaker i prefer sealed. there are so many thing to consider with subwoofer and subwoofer integration, even flexibility. i can only recommend sealed to others also.
Did you read the comments of this video? Man people really hate on sealed subs. They're like the maga crowd, loud and not very educated. Muh truck needs to be high and loud!
I don't know why people get offended over comments. Your job, Mr. Poes, is designing high end HT rooms. A designer/contractor wants to mitigate project time. Go with proven solutions and known results because time is money. A hobbyist has no problem spending hours integrating their ported subs. A homeowner does not want a designer spending hours fixing problems. Experts are supposed to get in and get out.
This is very true and when I transitioned from a hobbyist to a professional it was my biggest lesson. You need to work with solutions you know work. It’s not even just spending too much time. It’s avoiding call backs as well. You want it to work right the first time.
It's a shame that for ones that have ported subs are targeted as having low budget or low end systems. With low budget or high budget it does not matter. You came into this hobby what's the understanding that it is supposed to be fun. Along the way educational. To be shut down by a certain saying in a smirk. NSA that they're not wrong . I love ported subs. I like non ported subs. But the science never mattered to me. My ears is a better scientist than them.
The reality is it’s usually not THAT much more expensive to go sealed. I bought 4x SVS PB-1000 Pros. I’ve tested them ported and plugged/sealed. I’m about to go back to plugged. My room gain makes the output insane, and my MiniDSP 2x4 HD almost can’t even handle it lol. Now I wish I would’ve known about the Starke SW15s for $100 less each, or GSG MiniMartys (my next upgrade). My only potential issue would be circuit power. Sealed subs aren’t for “rich guys”. If you can afford Ported, you can afford Sealed.
@@christopherwilson6825he’s talking about like $200k+ type systems, not $10k. Most of us here have “budget” systems compared to the mansions and theaters he’s designing for. We’re talking systems worth more than our houses. At that price you can choose ported or sealed, but the obvious choice is sealed. The science doesn’t lie, whether you like it or not. It doesn’t mean that ported subs are bad, he’s said multiple times that they’re fine, it’s just that for the BEST performance you have to go sealed. Your ears aren’t better than science, so ignoring it is naive. Don’t get offended by him saying “low budget”, it’s not attacking you and it’s not that serious.
@@andrewskaterrr very true , very true. It not even disappointing that some forget how they started in this hobby. But at the end of the day there is different levels. But just because I had a bad experience with a certain speaker type brand. I'm not going to put it down just because I had a bad experience. Because there are a lot of listeners out there when it comes to this hobby they really look up to these type people and just got shut down everything new work worked hard for the money they spent. It's just I don't like when people try to hide they snobbiness. I love this hobby and every part of it. Good bad ugly budget to high-end.
@ 1:39 Matthew Polk had the greatest passive radiator implementation with his SDA design multiple drivers on 25 inch produced Bass of a 40 inch single driver. The 1st Subwoofer design goes back to the mid 1930s. But yes to your point spending more money on a commercial design project is the easy fix when $$$$ are not a problem .. more likely just give a different option to balance the low frequency energy.
I read some of ur old articles on audioholics where u defended ported subs,i guess as u experienced more better subs,u have changed ur views. Ported makes the effect feel more bigger in my living room than a sealed one,i never face chuffing as i dont listen below -15db. Thats an imp point many youtubers fail to explain
Hi Matt, why don't we see bandpass design subwoofers in home theater systems? I see them more in car audio. My first system was a very good for what it was 1990's higher end RCA theater system in a box with well built but small sealed 3.5" Kevlar driver 6ohm speakers, not your typical cheap box system. I later upgraded to pioneer AV receivers and better Yamaha 91db sensitivity sealed acoustic suspension LCR and surround speakers with 6.5 inch long throw aluminum drivers(60hz-20kz). I have untill this day kept the passive 3ohm RCA subwoofer I really enjoy its performance can't seem to let it go for something else. It got even better once I powered it with a 200watt stable to 2ohm external amp. It seems to blend well with my speakers and find it very musical. It also works well with movies and seems very dynamic and impactful with explosions etc. It probably does not go as low as some other subs but I don't want to give up the things I really like about it for lower extension. I believe it is possibly a 2nd order bandpass with dual 6.5 inch woofers internal and a patented design when I researched what kind it was many years ago because it mpressed me. I have never seen anything like it since other than the cheap home in box versions which can't compare. What are your thoughts on bandpass designs? They seem like a hybrid of ported and seal subwoofers, it's both at the same time..
I seem to recall he answered this some time ago, and if I recall correctly it was due to the fact that bandpass designs are really limited in bandwidth and max output for the size, and that isn't beneficial commercially. Or something to that extent.
@@TokeBoisen Found some good info at JL Audio on enclosures types. Comments will not allow links so Google Enclosure-Type-Performance-Comparison JL Audio
Wow ! @Matt Poes if a person have ported subs there system is cheap ? And your not wrong? For people that listen to you, and have Ported subwoofers that wanted to maybe make a change in the system to sealed. No I don't think that was a good choice of words there. No matter if the science prove it or not. It does not matter what the science say is what my ears my heart contempt loves about the hobby. No matter if you like sealed subs or ported, long as you enjoy the hobby is what brings people to the hobby. . sayings like that @matt poes does not go far for you. I thought that little smirk aside , you was maybe joking at what you said. But your dead serious. Lol . If I overdrive my two fiifteen inch ported subs, yes I'm going to get a uncomfortable sound. But that's why we have calibration to help calibrate our systems. So we can't have them problems. Wow my system is low budget LOL. Cthu. Thank you Mr Poes . Thanks a lot. Don't forget your name and stuff in your home cinema. Came from the name "Audioholics" not Mathew Poes
I don’t think your comment is fair. He is merely delineating the ‘Best of the Best’ from ‘Very Good’. I run 4 SVS PB-1000s and a Monolith M-215. I have more ports than I know what to do with and I have never felt whatever port noise may exist to be even remotely a problem (is it there?……sure but who cares about a little bit of noise)? Having said that, if I was going to go uber high-end I probably would go sealed (I guess). Matthew is looking through the lens of a professional…..professionals typically pursue perfection (this is bane of all professionals; they fixate on the meaningless - just the way it is). I certainly wouldn’t get ‘butt hurt’ over his comments. He knows his comments epitomize the law of diminishing returns - spend 5 times more to get 10% more benefit
I dont have much of an opinion about this, but the way you explain and talk about this subject seems to have a huge bias, and rubs people the wrong way. My suggestion: careful around “everyone who’s high end uses sealed.” You’re not smart enough to realize that your “high end” may not be “better listening.” In fact, in just watched a video about monitor speakers versus hifi or “audiophile” speakers: the point was made with clarity. Monitor speakers, which are perfectly flat, and acoustically ideal, are designed for the audio mastering people to hear and curate for and against specific sounds. They actually end up not caring about a lot of stuff that is going on, and absolutely aren’t “the best” music listeners by a country mile. In other words: don’t conflate your scientific understanding and listening to that of serious listeners / audiophiles. Also, some people listen for home theater. Ports all the way.
lol what? Sounds like you're just mad you're not part of a group you thought you were. I know it feels bad to realize you're not in the correct ballpark, try to learn instead of getting so defensive. "I watched a video so I know more than some career integrator" come on man... come on. You sound the fool.
I think you are confusing what I meant. As are others. High end didn’t mean audiophile. It had nothing to do with audiophiles. It was referring to other folks like myself that do top engineered home theaters. Anthony Grimani, Sam Cavitt, Peter Aylett, and Kieth Yates all favor sealed subs in their home theater design. For valid and scientific reasons. It’s not that ports are never used and can’t be used. But you will find that in their subwoofer choices, very frequently they are sealed. We have internal discussions about this and often agree on the preference and rationale.
Hi Matt, Kevin S here from GSG Audio Design in Los Angeles. Thank you for the information in this episode. FYI for you and the audience, all of our ported subwoofers have ports designed to keep air velocity at 20 m/s or less. If we can't hit 20 m/s or less on a ported design....then the design doesn't move forward as a GSG kit or fully finished subwoofer. Additionally, at this point we have over 60 different form factors available for 15,18, 21, and 24 inch drivers, in both ported or sealed options, so we can deal with nearly any scenario, customer desire, etc.
GSG friggin rocks.
I've also been in the DIY game for decades and confirm the superiority of sealed woofer enclosures in high-end systems. Literature from Martin Colloms and John Dunlavy greatly influenced me - they talked about better group delay, better transient response, and better integration with room-gain. And in my own listening experience I always found them to sound more natural.
Also putting ports on the front of the enclosure aims chuffing noises at the listener, weakens the front baffle and creates diffraction effects.
Thank Matt for another informative video. I've always been the type of person that respects other people's opinions and different points of view. I've learned a lot from watching your videos on the subject of home theater systems. As a home theater enthusiast I would like to say that I'm running a 5.1.2 setup with an all ported speaker system including ported subs(4) and I love how it sounds. Never had issues with speaker integration. I also have never heard any port chuffing or port noise and I listen to -13 to -7 MV . I also admit that my system is not a high end system.
Matt, your comments on port resonance being a problem at any SPL level is interesting. Was there another video you've done that explains that phenomenon in more detail?
Actually it looks like you covered this more in your industry consensus on mixing ported and sealed subs video. But interesting topic that I think could make a good dedicated video.
Appreciate your content and expertise. There is no free lunch I suppose with the extra output of ported subs. I thought your explanation made a lot of sense in the context of high end theater
Really hoping we can see the tutorial you previously mentioned regarding calibrating a system utilizing the moving mic method!
Sealed rules! When I move from these RSLs it will probably be sealed Rythmik 15s.
I wish I had a tenth of your knowledge and understanding of this stuff. 😵💫
I can wait a year or two for your new concept/content I'm sure it will be worth it...
Does your view on ports also extend to full range (80hz+) speakers?
Ported - passive radiators - sealed - infinite baffle or whatever. All I want is accurate bass that is 95% in every cubic foot of my room. A cannon shot, a crash, a kick drum or a T-Rex stomp should sound real if recorded and mixed properly (VERY doubtful ever). I am asking for too much? It seems impossible. What is it going to take? 20 sealed subs all over my small room. Including on/in the ceiling and floor. Low frequencies are a high priority problem and it sucks! hahaha!
Ty
So for sealed speakers world be the same?
I've never heard port noise or port chuffing.
I watch at -10db with a 8db harman room curve.
Thank God for my ported 16inch which is just as powerful as like 3 sealed 16s.
What about partially plugging ports? I'm having good results with partially plugging ports in bookshelf speakers in small rooms. Plugging the ports fully destroys the bass response too much but partially (with like an O shaped plug with a hole in the middle) they sound fine.
if you can line the port with cloth of some kind would be better. for low volumes that should be a ok fix.
Just a guess here but you can't simply plug a sealed subwoofer; main reason is that the enclosure size is not tuned AT ALL for it. Look at any sub manufacturer that offers the same sub/amp ported vs sealed and the sealed is like half the size.
What I don’t understand in the sealed vs ported vs horn debate is this. The point should be highest output/lowest distortion, right? Group delay is inaudible to anyone who’s not an integrator unless under strict A/B comparison.
I totally understand where you’re coming from and I agree with you that sealed does sound the best but there’s an enormous financial difference for the same results. A sub whose port noise is masked by the content (a well designed ported sub) always has less distortion and higher SPL than its closest priced sealed sub competitor.
However, you take a dual 21” ported sub from GSG (13hz tuning) and you match it up to a Perlisten D215s. Who wins in that scenario in SPL/Distortion? I know the Perlisten is basically one of the best subs on the market but at $10k, what do you gain in real-world content over the GSG sub mentioned above? Real content meaning, not CEA testing. Just movie watching hitting 115db peaks at the RLP.
Idk. It’s hard to imagine that the Perlisten is worth it when talking about DBA setups. All the SPL masking from the other speakers surely negates any superiority the Perlisten will have. I’d love to have one but I just could never justify the cost.
Mr Poes,if I get sealed subs for 35hz and below frequencies, are there benefits to getting multiple subs for even distribution? In another videos comments you said there’s no benefit outside of loudness, but I didn’t understand this because there are nulls below 35hz.
I'm not familiar with the comments of which you speak.
However, yes, ... below a room's fundamental modal resonance (1, 0, 0), there's no performance advantages to be had except output.
The modal region is where multiple subs can facilitate minimizing the magnitude of peaks/dips in freq response.
Theoretical example;
If one's room was around 14 feet, in the longest dimension. Then below 40hz, there's no freq response smoothing
benefit.
Only headroom performance is to be gained.
40hz = ~28' wavelength
(~max size wavelength to freely propagate within a 14' dimension)
@ A little more technical than I can understand. My room is roughly 15x28’. What would that mean? Appreciate all the feedback.
@@DeanLee-e1g
With an approximate longest dimension of 28', your room could theoretically benefit from multiple subs for modal smoothing down to around the 20hz range.
@ I see, thanks again.
ported or passive radiator design can be fun for a while, but i can not live with them.
if i buy brand finished or DIY build any kind if subwoofer or speaker i prefer sealed.
there are so many thing to consider with subwoofer and subwoofer integration, even flexibility. i can only recommend sealed to others also.
Did you read the comments of this video? Man people really hate on sealed subs. They're like the maga crowd, loud and not very educated. Muh truck needs to be high and loud!
@@lgmediapcsalon9440 haha, port lovers are united.
I don't know why people get offended over comments. Your job, Mr. Poes, is designing high end HT rooms.
A designer/contractor wants to mitigate project time. Go with proven solutions and known results because time is money.
A hobbyist has no problem spending hours integrating their ported subs.
A homeowner does not want a designer spending hours fixing problems. Experts are supposed to get in and get out.
This is very true and when I transitioned from a hobbyist to a professional it was my biggest lesson. You need to work with solutions you know work. It’s not even just spending too much time. It’s avoiding call backs as well. You want it to work right the first time.
I understand your points, but most of us are on restricted budgets and ported gives you the most bang for your buck, perfection is for you rich guys.
@@garyharper2943 Sealed subwoofers aren't that much more expensive than their ported counterparts.
It's a shame that for ones that have ported subs are targeted as having low budget or low end systems. With low budget or high budget it does not matter. You came into this hobby what's the understanding that it is supposed to be fun. Along the way educational. To be shut down by a certain saying in a smirk. NSA that they're not wrong . I love ported subs. I like non ported subs. But the science never mattered to me. My ears is a better scientist than them.
The reality is it’s usually not THAT much more expensive to go sealed. I bought 4x SVS PB-1000 Pros. I’ve tested them ported and plugged/sealed. I’m about to go back to plugged. My room gain makes the output insane, and my MiniDSP 2x4 HD almost can’t even handle it lol. Now I wish I would’ve known about the Starke SW15s for $100 less each, or GSG MiniMartys (my next upgrade). My only potential issue would be circuit power. Sealed subs aren’t for “rich guys”. If you can afford Ported, you can afford Sealed.
@@christopherwilson6825he’s talking about like $200k+ type systems, not $10k. Most of us here have “budget” systems compared to the mansions and theaters he’s designing for. We’re talking systems worth more than our houses. At that price you can choose ported or sealed, but the obvious choice is sealed. The science doesn’t lie, whether you like it or not. It doesn’t mean that ported subs are bad, he’s said multiple times that they’re fine, it’s just that for the BEST performance you have to go sealed. Your ears aren’t better than science, so ignoring it is naive. Don’t get offended by him saying “low budget”, it’s not attacking you and it’s not that serious.
@@andrewskaterrr very true , very true. It not even disappointing that some forget how they started in this hobby. But at the end of the day there is different levels. But just because I had a bad experience with a certain speaker type brand. I'm not going to put it down just because I had a bad experience. Because there are a lot of listeners out there when it comes to this hobby they really look up to these type people and just got shut down everything new work worked hard for the money they spent. It's just I don't like when people try to hide they snobbiness. I love this hobby and every part of it. Good bad ugly budget to high-end.
@ 1:39 Matthew Polk had the greatest passive radiator implementation with his SDA design multiple drivers on 25 inch produced Bass of a 40 inch single driver.
The 1st Subwoofer design goes back to the mid 1930s.
But yes to your point spending more money on a commercial design project is the easy fix when $$$$ are not a problem .. more likely just give a different option to balance the low frequency energy.
I read some of ur old articles on audioholics where u defended ported subs,i guess as u experienced more better subs,u have changed ur views. Ported makes the effect feel more bigger in my living room than a sealed one,i never face chuffing as i dont listen below -15db. Thats an imp point many youtubers fail to explain
Hi Matt, why don't we see bandpass design subwoofers in home theater systems? I see them more in car audio. My first system was a very good for what it was 1990's higher end RCA theater system in a box with well built but small sealed 3.5" Kevlar driver 6ohm speakers, not your typical cheap box system. I later upgraded to pioneer AV receivers and better Yamaha 91db sensitivity sealed acoustic suspension LCR and surround speakers with 6.5 inch long throw aluminum drivers(60hz-20kz). I have untill this day kept the passive 3ohm RCA subwoofer I really enjoy its performance can't seem to let it go for something else. It got even better once I powered it with a 200watt stable to 2ohm external amp. It seems to blend well with my speakers and find it very musical. It also works well with movies and seems very dynamic and impactful with explosions etc. It probably does not go as low as some other subs but I don't want to give up the things I really like about it for lower extension. I believe it is possibly a 2nd order bandpass with dual 6.5 inch woofers internal and a patented design when I researched what kind it was many years ago because it mpressed me. I have never seen anything like it since other than the cheap home in box versions which can't compare. What are your thoughts on bandpass designs? They seem like a hybrid of ported and seal subwoofers, it's both at the same time..
I seem to recall he answered this some time ago, and if I recall correctly it was due to the fact that bandpass designs are really limited in bandwidth and max output for the size, and that isn't beneficial commercially. Or something to that extent.
@@TokeBoisen Found some good info at JL Audio on enclosures types. Comments will not allow links so Google Enclosure-Type-Performance-Comparison JL Audio
Wow ! @Matt Poes if a person have ported subs there system is cheap ? And your not wrong? For people that listen to you, and have Ported subwoofers that wanted to maybe make a change in the system to sealed. No I don't think that was a good choice of words there. No matter if the science prove it or not. It does not matter what the science say is what my ears my heart contempt loves about the hobby. No matter if you like sealed subs or ported, long as you enjoy the hobby is what brings people to the hobby. . sayings like that @matt poes does not go far for you. I thought that little smirk aside , you was maybe joking at what you said. But your dead serious. Lol . If I overdrive my two fiifteen inch ported subs, yes I'm going to get a uncomfortable sound. But that's why we have calibration to help calibrate our systems. So we can't have them problems. Wow my system is low budget LOL. Cthu. Thank you Mr Poes . Thanks a lot. Don't forget your name and stuff in your home cinema. Came from the name "Audioholics" not Mathew Poes
I don’t think your comment is fair. He is merely delineating the ‘Best of the Best’ from ‘Very Good’. I run 4 SVS PB-1000s and a Monolith M-215. I have more ports than I know what to do with and I have never felt whatever port noise may exist to be even remotely a problem (is it there?……sure but who cares about a little bit of noise)?
Having said that, if I was going to go uber high-end I probably would go sealed (I guess). Matthew is looking through the lens of a professional…..professionals typically pursue perfection (this is bane of all professionals; they fixate on the meaningless - just the way it is).
I certainly wouldn’t get ‘butt hurt’ over his comments. He knows his comments epitomize the law of diminishing returns - spend 5 times more to get 10% more benefit
Thats not what he said, calm down.
I dont have much of an opinion about this, but the way you explain and talk about this subject seems to have a huge bias, and rubs people the wrong way.
My suggestion: careful around “everyone who’s high end uses sealed.” You’re not smart enough to realize that your “high end” may not be “better listening.” In fact, in just watched a video about monitor speakers versus hifi or “audiophile” speakers: the point was made with clarity. Monitor speakers, which are perfectly flat, and acoustically ideal, are designed for the audio mastering people to hear and curate for and against specific sounds. They actually end up not caring about a lot of stuff that is going on, and absolutely aren’t “the best” music listeners by a country mile.
In other words: don’t conflate your scientific understanding and listening to that of serious listeners / audiophiles. Also, some people listen for home theater. Ports all the way.
lol what? Sounds like you're just mad you're not part of a group you thought you were. I know it feels bad to realize you're not in the correct ballpark, try to learn instead of getting so defensive. "I watched a video so I know more than some career integrator" come on man... come on. You sound the fool.
I think you are confusing what I meant. As are others. High end didn’t mean audiophile. It had nothing to do with audiophiles. It was referring to other folks like myself that do top engineered home theaters. Anthony Grimani, Sam Cavitt, Peter Aylett, and Kieth Yates all favor sealed subs in their home theater design. For valid and scientific reasons. It’s not that ports are never used and can’t be used. But you will find that in their subwoofer choices, very frequently they are sealed. We have internal discussions about this and often agree on the preference and rationale.