6th Order Bandpass (Parallel ) - MESO65 - Design Build & SPL Test

[Music] thank you [Music] thank you [Music] foreign [Music] [Music] pass enclosure operate particularly a parallel sixth Order band pass the goal of this build is to prove that a sixth Order band pass build are better suited for sound quality and not SPL to do so I will compare a base reflex enclosure or a ported enclosure built to manufacture specification against this parallel six Order band pass so now that you know the purpose of the build and the goal of the build what is the purpose of this video well the purpose of this video is to dispel a myth that six sort of band pass bills are better suited for SPL than a simple ported enclosure in short this is a sixth Order band pass versus bass reflex hopefully after seeing my approach to both these type of enclosures maybe you then be inspired to construct one of the other on your own if you would like to help out the channel you can find affiliate links to any items featured in this video in the description box below any Purchase made through those links helps support the budget base head Channel and allow me to keep bringing you guys even more content such as this okay guys so right now I'm back here in the studio I should say my living room shout out to my wife for letting me do this stuff without cussing me out right I got my tone generated here and I'm gonna I'm gonna let you guys see exactly how this thing behaves and unless you guys also get a peek at the airflow on the inside of it to see what port is activated now a little bit about the enclosure this chamber right here very thin and almost like a transmission line right hopefully it behaves like one but anyway so this is supposed to be tuned to around 50 hertz meaning that it'll take anything like low 40s all the way up to like 80. this year is like a daily driven Port I know it's very very long but that's what the the software called for so that's what I built over here is my 30 Hertz Port meaning it'll catch everything from the low 20s all the way up to around the mid 40s or so supposedly so it'll fill the Gap where this one starts to fall off or roll off in terms of upper frequencies this one would catch and take it all the way to like 80 Hertz you know what I'm saying and when this one starts to fall off or roll off on the lower frequencies this one here will catch it and take it all the way to like 20 something so you got a bandwidth of around low 20s to like mid 70s very very efficient design for a parallel six order I love these enclosures the only thing I hate about them is the size but with these little guys I can build them all day and let you guys see how they function and that's what we're going to be doing now with the base sweep so we're going to take this base sweep I'm going to start at 80 Hertz and I'm going to start the test there [Music] and there you guys go confetti everywhere hopefully I got all of that on camera for you guys um just for the it blew all of the confetti out of that port and then look at this everything's like in the corners and stuff it's snaking his way out of here into this port and it's really doing some stuff pretty amazing what do you guys think about that I'm gonna I'm gonna try to give it a another go and let you guys get another shot at that let's do this again so we're gonna do the the subwoofer test again and I'm gonna try to get it where you guys can see the whole piece [Music] and yes I know some of you guys are going to be like oh man you hear some hissing or something going on with the top yeah I mean it's it's a it's a very thin top so you're losing a lot of acoustical power you know that's not what this is for this is to show you guys how this thing worked and from the looks of my floor I think you guys get the point these things are highly efficient okay if you build one properly just use win ISD that's what I do following this graph right here and that's exactly what this name does all right guys as you guys can um can see we we're back here in the lab and what I'm going to be doing is displaying to you guys the true potential of this six order by playing some music now I know that some of you guys may wonder why would you build an enclosure like this that plays down into the 20s right well some people um listen to that genre of music that plays into the 20s believe it or not some people like your tune very very low uh where some people like it very very high bass and then you then you got the sweet medium and they close it like this would give you all three okay okay now honestly this can be tuned a lot higher I could have went with like 60 hertz tuning here 30 hert here which meaning they have been like a half octave apart or in this case it's been a whole octave apart right 30 to 60. and that would have caught a whole lot of Everyday Music bass but if you're someone who listens to like Loca uh like decaf type music or if you wanted to use this in a home theater system where you wanted to uh listen to some music which this port would catch all almost all type of music and you would like to get your rumbly feel in your home theater system for your movies and stuff so this would be the port to catch all that all your your sound effects like the uh the explosions the monsters stomping Through the Jungle this is what this would be this right here would be most of your music your everyday stuff so and what I'm going to be doing right now is I'm going to be playing a song I can't tell you guys exactly what song this is because I'm going to try to remove all the vocals from this song but it's a very famous bass heavy Bass song that a lot of YouTubers play hopefully you guys can catch and uh recognize it for what it is and it plays down into the 20s as well so over here we have our am am one multimeter this is a audio multimeter by Steve Meade designs that partnered with the more engineering pretty cool tool and they're going to show us our real-time power giving us power would be the S the atariums MD 8000.1 no I'm not going to be sending 8 000 Watts through this little bitty subwoofer and we're simply going to be running it off my cell phone okay so this is your car audio equipment this is the setup I'm not going to go into the power bank and all that stuff we can talk about that later right now I'm just going to hit play and let you guys see what what this thing is about foreign 30s 30s right there 20s over here and guys that's barely 100 Watts let's give it a little juice [Music] [Music] [Music] [Music] there it is huh this they've been blew everything out of that Port I gotta refill it epic bass drops [Music] I think you guys get it and yes you do hear a lot of porch uh chuffing right now because these are not rounded over yet it's not ready to go in the car just yet but that's the next time you guys see it it's going to be in the car and it's also going to have a three-quarter inch uh MDF panel on top it's not going to have this in the vehicle this enclosure is amazing it can be improved uh for my daily listening I would actually shorten this port and bring this tuning up a little bit more and I would also do the same on this port right here I would probably take out this entire wall for it'll bring that tuning way up to around 30 Hertz or so without where I really needed that because right now it's actually lowered in 30. it's like 20 something but um anyway listen to that movies and stuff amazing this is a box not only for the home theater system but for some base airs for sure okay as you guys can see I do have the three-quarter inch MDF top on the enclosure now so we should get a whole lot more of a response out this enclosure because we now have something to actually contain and and Route the acoustical energy no energy is going to be lost with that three-quarter inch MDF up there so the port should be a lot more activated now what we're going to be doing is giving it another sweep and we got the tissue test going on right here just a bunch of tissue in front of the porch to give you guys an indication of airflow so we're going to do a base sweep from 150 Hertz down to 20 Hertz foreign [Music] foreign so we're gonna give that another go as you guys can see this thing is very very responsive in between the upper 40s and lower 20s very very responsive for both ports so let's give that another sweep and we'll move on to the trunk next of the vehicle [Music] foreign band passes are very very efficient particularly this is my most favorite you know of the six order design there's a parallel six Order band pass it's highly efficient and as you guys can see this can easily be used for daily driven systems or your low down deep deep bass systems as a matter of fact I've actually Incorporated a couple of these in my home theater systems and they do very very well on everything to be honest with you uh enough of that next test is going to be the vehicle uh where we put it in the trunk of the Impala and put some power through it all right guys so we're back here in the Impala and as you guys can see I got the base meter in the kick once again we're going to be giving this guy a base sweep from 150 down to 20 Hertz and there it is a little baby sixth order right there front and center in the trunk right now it's forward facing so you're not going to get the best reading out of it but I just wanted to kind of test what volume levels I need to have this thing at so it doesn't destroy the subwoofer inside I don't expect big numbers from this I mean it is a six and a half inch sub in a two chambered enclosure and it's not built for SPL it's built for low frequencies okay we got the SMD amm1 audio multimeter this is going to be measuring out real world power yeah and yes it's raining I'm out here very dedicated to you guys right now all right like I stated previous we're going to be doing uh 150 down to 20 Hertz and we're going to be measuring monitoring the power over here so let's get this started [Music] foreign [Music] so this particular amplifier is the this is the audio pipe apmn 2000 this guy here does have a steep roll-off at around 30 Hertz or so but let's look at the base meter has a 126.3 I'm actually shocked to see that much on here but let's see at what frequency did we get that reading oh it's hard to do this with two hand one hand all right 126.3 and we got that at a 36 Hertz that's where it peaked in that moment at 36 Hertz if you guys can read that is really hard to capture on screen there we go that's the angle I need head on is kind of hard I'm going to be turning that guy around and we're gonna see what we get loaded off the trunk uh that's coming up next give me a moment all right guys so we right back at you again the only thing we did was turn the subwoofer enclosure around that was it so we're gonna run that test again 150 down to 20 Hertz and we're going to see what results we get on the base meter foreign [Music] 36 Hertz is what we got we got a 127.1 so there you go guys a lot of I've been trying to tell a lot of people that sixth Order band passes can be made into an SPL bill but that's not what they're really for uh six Order band pass is to CR it's to increase your low frequency extension every comparison video should have a control unit so what is a control unit in this case the CT sounds meso 6.5 needs to be compared against what the manufacturer recommend for it before you can judge what you customly built for it the reason that I'm bringing the control unit into this video is because I want people to fully understand that six sort of band passes though they have been built for SPL competitions that is not their primary purpose the primary purpose of any bad pass enclosure is lower end extension to increase the bandwidth going into this experiment I do expect the important enclosure SPL wise to do a little bit better than the sixth order but in terms of bandwidth frequency response lowen extension the six order is going to win hands down every time and for our control unit we're going to be using this enclosure this enclosure has an internal volume of a quarter cubic foot it is tuned to 42 Hertz and have a vent area or Port area of 12 cubic inches that is eight inches by one and a half inches with a total vent length get this of 72.3 inches long okay so we have the CT sounds meso in a enclosure that is actually built to manufacture specification so we're going to be testing this to see exactly what response we get what SPL score we get and this score and this test the performance of this enclosure is going to be used as a control in all the other videos that we have using this tone generator app we're going to be doing a base sweep from 100 down to 20 Hertz alright so let me get the tone going foreign [Music] [Music] we're gonna check the uh base meter and see where we peaked that and wherever we picked that is going to be where we run our school 38 Hertz is where we peaked and I must be honest and say guys I smell this subwoofer which I've never have but in this case I smell it which is kind of weird because of all the tests I've done with these little guys I never smelled it before but here it is in an enclosure built for it and I smell it it's kind of weird but anyway we're gonna get the tone generated at 38 and we're going to continue this all right so we have the tone generator set at 38 Hertz and there's the setup I'm gonna see if I can bring it up to his max which is 800 watts and see what score we get all right here we go all right the man kill this as you guys can see it's reaching its uh mechanical limit meaning that it's bottoming out before I can get it to his max I don't want to kill it it's already smelling so let's just see what score we got behind that so there you have it that's a 125.2 DB 125.2 and let's check the frequency again it says 39 Hertz so I'm gonna reset it and I'm Gonna Bump this down one and then I'm gonna rerun the test let me get the SMD restarted all right I'm gonna give it uh another go of this and these are back to back which it can be a bit hard on the subwoofer but hey that's why we do this right so we're gonna give this reset the gain control and give it another go all right okay once again wasn't able to completely Max it out but we did get a higher score that's a 126. 126 guys that's where it said I'm gonna leave it alone I don't want it to burn up um it's smelling a little bit too bad for me so I'm gonna leave it like that so what I'm going to be doing now is turning it around and see if we can get a better score from that and just keep keep eye on the tips and just know my limitation with it can't really do a whole lot with this guy today in that enclosure anyway be right back all right guys I'm gonna try as best I can to keep an eye on that voltage back there bring it all the way up to around 800 and we'll see what we got then let me make sure okay hit play sounds a lot better all right damn I hit the wrong button man as you guys can see the damn lead popped out of the SMD meter but there you go 128.3 that's nice man it's pretty cool how you can gain almost three DBS just by uh loading it off the trunk that's pretty cool and of course that was that 38 Hertz there you go again 38 Hertz is what we're testing at so not bad not bad for one little guy sounded really good not bad for one little sub but um I think he didn't take enough abuse for one day we're gonna get back to the lab and get this video edited for you guys [Applause] so there you have it the ported enclosure was a little bit louder than the sixth Order band pass however the band pass enclosure not only did it have a wider frequency range but it also had better handling meaning that it didn't bottom out as quickly as the ported enclosure did speaking of six little band pass if you notice the enclosure right now on the screen it looks a little bit different from the ones that was just featured here in this video thanks to everyone who stuck around to the end in order to see this enclosure because you guys are getting a sneak peek at what's coming next here on the budget base head Channel what you guys are looking at is a tri-chambered six door band pass that means that this six little bear pass doesn't have two ports it actually has three ports and if you guys want to learn a little bit more about it stay tuned to the next one thanks for visiting the channel to help you simplify car audio it's the budget base here and I'm out

Channel: BudgetBassHead

Views: 36,438

Keywords: 6.5 Inch Subwoofer Review, Subwoofer Box Build, Car Subwoofer Box, Car Subwoofer, Subwoofer Bass Test, Subwoofer Bass Sweep, How to Model Subwoofer Box, Car Audio, ct sounds meso 6.5, ct sounds meso, 6 inch subwoofer review, Subwoofer Demo, subwoofer demo music, subwoofer demo songs, car audio fabrication, car audio system, car audio installation, car audio setup, 6th order bandpass, 6th order bandpass box, 6th order bandpass subwoofer box design, 6th order subwoofer box

Id: iD3aZFzfwRw

Length: 28min 5sec (1685 seconds)

Published: Mon Nov 21 2022