That was super interesting. Love the slow mo videos supporting the graphs. Having a visual of the cancellation at the port was very cool.
@curbowbass6124
23 сағат бұрын
Absolutely love that sub. Strangely, it makes me want a Reese’s Peanut Butter Cup. 🤔
@MrMaxwood
Күн бұрын
24 views and only 2 likes, that's diabolical. Do you people understand how these channels work. Please hit the like button before you finish watching the video.
@miri4885
Күн бұрын
🎉 thank you🎉
@txddyfarquh69
4 сағат бұрын
That like/view was 23hrs ago....
@dieguerrero
20 сағат бұрын
Awesome video!!!! Literally one of the best explaining sealed vs ported. The slow motion videos were amazing showing perfectly how the port and woofer work together.
@alhammons7112
8 сағат бұрын
I love the data driven focus of these videos; information that is measurable, observable, and based on facts. Thank you Nerijus for all you do, you are appreciated.
@twdll
22 сағат бұрын
Much prefered the slow mo viceos rather than just the graphs. Well done. Thanks for your info.
@cagaero
Күн бұрын
Thank you
@guidoschnelzer942
14 сағат бұрын
10/10 Such a great breakdown and thorough presentation of your subject matter. So neat to watch the videos at the end of the in phase and out of phase cone/port movement. I had no clue, learned something new!
@marcovaldovinos5009
Күн бұрын
Great info ❤
@jonesaleroy
22 сағат бұрын
Lol. My cats get into everything. But not as bad as my dwarf goats or guineafowl. Morning Raw! Let's see some rew graphs. Morning, all you sick audio nuts! Gotta be if your watching this for breakfast like me. 😂
@robertappleyard7053
22 сағат бұрын
If it fits, it sits.
@johnd5542
21 сағат бұрын
I think the ported for spl only rumor is because sealed are hard to mess up. In a good ported box, you wont be able to actually hear the distortion/resonance. Secondly, you get so much more with so much less power. For proof just look at some of the most expensive and accomplished pro audio companies' products.
@bennyblanco14
6 сағат бұрын
This isn't about pro audio. This is SQ, and information like this is very important for those running ported.
@sibusisomasina753
18 сағат бұрын
Great video, great explanation and great demonstration, keep up the great work chief, I really enjoy and learning alit from your videos, salute
@woldemortxyz7996
Күн бұрын
Next up is t-line and horns
@Grommet2007
21 сағат бұрын
The distortion at Fb for the vented version of the box seems to be mostly 2nd order. This could be more due to the loading at the entrance and exit of the vent being very different.
@RAW-CAt
21 сағат бұрын
Noted, thanks👍
@127bond
19 сағат бұрын
Very good video! What would be interesting (for HiFi) is the timing. Maybe you can see it in the waterfall or in the step response or in the phase response, but it is said that bass reflex is not as fast as sealed.
@jonesaleroy
22 сағат бұрын
They have the ultimax 2 now. Carbon cone and 22mm Xmax 800rms. Yea, i knew that off the top of my head. 😂
@christiandshatto7765
18 сағат бұрын
Nice work👍🏼- when I was younger I typically used sealed, now, I prefer ported; more output, less power needed. Ported gives me the ablilty to turn it down( bass level remote control), vs. the opposite of maxing out amp/output to get wanted low end response.
@sydneydalpe7818
Күн бұрын
From the knowledge I gathered so far I wonder why T-line enclosure isn't more popular? If I got it right , it achieve the desired qualities of both sealed and ported enclosure.
@RAW-CAt
Күн бұрын
Because they are massive and people want compact options.
@miri4885
21 сағат бұрын
Do Not forget that you also have to set an subsonic filter. If it is at 20hz by 24db/oct you will lose much of energy in the near of 25-30 hz. Much energy. That also speaks for against closed.
@johnd5542
20 сағат бұрын
I think the video you are refering to was from Alpha Sound. He has some great videos explaining audio.
@RAW-CAt
20 сағат бұрын
Yes, I believe that is the one👍
@666nacirema666
4 сағат бұрын
Not sure if my original comment went through oh well. Anyways videos like this are very informative. Would be cool to see a more in depth video on ports. Like shape size location in relation to driver and all that to the listener/meter. PRs are fun too. Aperiodic mids and midbass would be another interesting deep dive. I know a few old timers who swear by it in cars. They arent the type who love tube amps with 10% distortion either so maybe theyre onto something.
@f.j.z3213
Күн бұрын
God luck with home audio sub, i have a Dayton ultimax 18 tuned too 19 hz. love to see som videos on a Sony Xplod as a have 4 xD and it was my first subwoofer almost 13 year ago :)
@ssjdavid
14 сағат бұрын
Great video! Tired of the “ported is for spl” misconception.
@Gotyoulooking
22 сағат бұрын
I went from 2 12”s in a proper ported @35hz to 2 18”s Ultimax in a 7.5ft3 sealed and man they get low. I have 2 of the same trucks Jeep Cherokee XJ, and the one with the sealed Ultimax wants to tear the truck apart. Weirdly I get more sound outside the car with the ported but the sealed sounds to me better and it all stays inside the vehicle.
@johnd5542
20 сағат бұрын
Well thats a hugh difference in cone area. So Im sure those 2 18s can match the 12s at fb. But if you replaced the 12s ported with 12sealed, it would be extremely underwhelming around fs. Id rather have the right 12s (like SQL) tuned to 26-28hz then 2 12s sealed.
@NakeanWickliff
21 сағат бұрын
Google ground plane measurements. Super easy and very accurate outside measurements of bass.
@RAW-CAt
21 сағат бұрын
I am aware of those, however I do not have such big open space to measure down to 15-20Hz.
@jonesaleroy
22 сағат бұрын
Raw I do the same thing in testing boxes by stuffing the port. I always wondered if the port just being in there changes the refelctions and air flow inside and whether it affects the final output? I know it probably wouldnt be much at these frequencies but just to kill a curiosity. ❤ it as per usual brother.
@ryanamen6397
22 сағат бұрын
Vs. Infinite baffle😊
@lukeace347
19 сағат бұрын
Sealed subwoofer is an oxymoron
@simonzinc-trumpetharris852
21 сағат бұрын
An unusual choice of damping material...
@RAW-CAt
21 сағат бұрын
Perfect fit with not too much force and is not loose. Does the job😂
@mix1ro
3 сағат бұрын
i wish i trusted myself to cut wood without an emt on standby 😔
@LatvianVideo
18 сағат бұрын
QTS differences dertermining sealed or ported... looks at my ported 180 liter (6.3cube) 2 10s box tuned to about 23.5hz. The drivers have a QTS of ~0.8 and ~43hz FS. Got about 138db @ 21hz with 190w going to the pair. Working pretty well 😄
@JeyDeeSweden
Күн бұрын
Interesting video! 🙂 But always eemember; chasing a completely tone deaf pre determined, only in fantasy optimal ”taget curve”, is completely different thing than chasing the most musical bass sound.
@RAW-CAt
Күн бұрын
"musical" IS matching to target. If the target is chosen for a "natural sound", a driver that matches the target closely without EQ, will sound natural and musical.
@JeyDeeSweden
Күн бұрын
@@RAW-CAt Well, target curve is only a rough guide to help you, while your ears in combination with your brain are the real King! when it comes to judging true musicality and really tuneful bass. 🙂 Bass reflex and closed box sounds completely different, but both can sound very mysical, done right. In the right application and with the right bass driver to match.
@Gershy13
22 сағат бұрын
Can you use an audio interface to measure the same things as something like a dats v3? I see you did an impedance sweep, can this be done just with an interface? Can you messure other TS parameters with just an interface?
@RAW-CAt
21 сағат бұрын
Yes, you can! All you need is a few resistors and connectors. Open REW manual and look up "impedance sweeps" and "TS parameters"🙃
@Gershy13
20 сағат бұрын
@@RAW-CAt That is very cool! I did not realise REW is this powerful.
@RAW-CAt
20 сағат бұрын
@@Gershy13 REW is like excell. Most people know how to use like 10% of it 😀
@Newschoolcovers
18 сағат бұрын
The qts thing is a myth. Instead, take a look at the QES, because this indicates the relationship between cone mass and motor power. The lower the better. Whether bass reflex or closed is completely irrelevant.
@bennyblanco14
6 сағат бұрын
Both Qes and Qts are important parameters, but they serve different purposes. Whether one is more important depends on what you're trying to achieve with your subwoofer. Here’s a breakdown of what each parameter means and when you might prioritize one over the other: Qes (Electrical Q Factor) Reflects the control the amplifier has over the subwoofer’s movement. A lower Qes indicates tighter electrical damping (better motor control), while a higher Qes suggests less electrical damping. More critical when: You care about the efficiency and control of the subwoofer. You're working with a powerful amplifier or need tight, precise bass response (e.g., sealed enclosures). Qts (Total Q Factor) A combination of Qes (electrical) and Qms (mechanical) factors. It gives a general idea of the subwoofer’s behavior as a whole, reflecting both mechanical and electrical damping. More critical when: You're choosing the appropriate type of enclosure (sealed, ported, infinite baffle, etc.). For example, a Qts < 0.4 is usually better for ported enclosures, while a Qts between 0.4 and 0.7 is preferred for sealed enclosures. In infinite baffle setups, a higher Qts (> 0.7) can work better to generate fuller bass. Which to Prioritize? If you're choosing an enclosure type or system design, Qts will be more relevant. If you want to understand the motor control or power efficiency of the subwoofer, Qes is the more critical factor.
@Newschoolcovers
3 сағат бұрын
@@bennyblanco14 Since power (or more precisely voltage) is not a limiting factor and EQing capabilities are now available everywhere, it is completely independent of the design that a driver with as much drive as possible and a light diaphragm (which results in a low QES) can reproduce impulses more precisely. The aim should always be to build a subwoofer with the best possible impulse response. Making precise loudspeakers imprecise is possible, the other way around is not.
@asdfasdfasdfae
19 сағат бұрын
Man, i dont' understand subwoofer. cabin gain, etc.. so confusing for what. I'm just going to buy a loaded Alpine and call it a day.
@Niclas0299
21 сағат бұрын
Hey There I have a big question that I cannot answer with security. I have a Auto Radio with 12 volt input sensitivity. A match up 8 that has an input sensitivity going from 11 volt standard down to 2.8 volts. And a sub woofer amp with 0.2 volt to 5 volts. In order to match the amps I’m guessing that I need to put down the input sensitivity of my match on the subwoofer input from 11 down to 5 volts or 3 volts in order to match the sensitivity of my sub amp. The sub amp is connected via line out. Match Amps receive high level inputs so that they can cope with high voltages. If I connect a amp via line out I guess that this is not high level anymore it is low level input. So in this specific case I’m guessing that a switch from 11 volts to the voltage of the esx qe900.4 amp 0.2-5 volts is required. What would you do ? The sub works but I’m only hitting around 100db with this sub. It has 90db/1w 500wrms 1500 peak the amp has 600watt rms and 1200 peak
@RAW-CAt
21 сағат бұрын
You need to measure your HU output and remember the volume level where it outputs no more than 11V. Then at that volume measure the DSP output, it will.be slightly less than stated. And with that set gains on your subwoofer amplifier accordingly.
@Niclas0299
19 сағат бұрын
@@RAW-CAt I have now seen that the line out output’s no more than 3 volt rms. So the optimal output voltage for my sub amp should be 3 volts ?
@felixmedrano8208
21 сағат бұрын
I was considering going sealed, currently run to JL W3s in a box tuned to 35hz and I feel it sounds boomy at times.
@bbfoto7248
20 сағат бұрын
Have you adjusted the crosssovers and applied any EQ to shape the response so it isn't "boomy"???
@felixmedrano8208
20 сағат бұрын
@@bbfoto7248 yes
@felixmedrano8208
20 сағат бұрын
@@bbfoto7248 yes
@ssjdavid
14 сағат бұрын
You won’t be happy with the output. Grab a second W3 and go dual sealed
@felixmedrano8208
14 сағат бұрын
@@ssjdavid I'm running 2 now but in a under the seat ported box.
@elviscaragea4433
Күн бұрын
How much distortion is ok for such slow frequency? Also can be because the bax is tuned below fs?
@RAW-CAt
Күн бұрын
Probably up to 10% is fine🤷 All ports are noisy AF. But this one is not ideal as it's tool low for the sub. I will.update when I'll get the xplod that should be better suited for this enclosure.
@2011joser
Күн бұрын
I have done a back to back comparison of 8” subs using properly sized enclosures using the exact same drivers in a hatchback car. The output was definitely greater with the ported boxes and was very satisfying when playing bass intensive music like hip hop. The output of higher end sub frequencies seemed relatively diminished. Because I listen to a wide variety of music I stuck with the sealed box since the accuracy of a kick drum hit is much more important to me than sensory experience of a strong 30hz note. It was fascinating to see the port effects visualized in slow motion. Great video.
@elviscaragea4433
22 сағат бұрын
@@2011joser what qts had that 8" sub? And fs
@krotaskrotux9290
Күн бұрын
Sveikas. Baigiau savo zemadaznio projektuka tik su dsp reguliavimu problema jis per tyliai veikia kad helix rta matytu normaliai aišku jo rms 300w o pokolkas uzmaitintas su 200w
@RAW-CAt
Күн бұрын
Patikrink signalą, jei naudoji gamyklinį, gali būti, kad žemų visai nėra. 200W man asmeniškai labai jau mažai, ypač jei nejautrus subas.
@krotaskrotux9290
23 сағат бұрын
@@RAW-CAt 88db 1w/1m kogero teks keisti maitinimo laidą į storesnį ir dėti monobloka papildomai. Bent briesbosiai po sėdynėmis veikia gerai bet aišku tai nereiškia jog nuo 20-50hz geras signalas
@krotaskrotux9290
20 сағат бұрын
Klausimas ar skiriasi kokybė zemadaznio pajungus 4om nuo 1om
@RAW-CAt
19 сағат бұрын
Ne, nėra jokio skirtumo. Vienintelis skirtumas yra kiek stiprintuvas galios duoda.
@arturstec8944
12 минут бұрын
Hi Nerijus Can I have your email please? Need to ask something😊 Thanks
Пікірлер: 81