Another great and informative video. Keep up the amazing work and keep feeding us with your knowledge. Have an amazing day and may God continue to bless you and your family. ✌
Hold up there dude on my engineering programming specifically on kerf ports it does increase the port velocity I've done the tests with dry ice and also the engineering tools so you can't say that that's not entirely true it does look beautiful and it puts a nice touch on an enclosure however it does increase Port velocity you do have to account for the tuning aspect of it because it'll go up and you have to extend into the enclosure but you can definitely account and calculate for that
@@ddtstrc9678 yes and no it will increase the velocity at the kerf cause you can take in more air and have smoother transitions, but you have to have the kerf on the inside of the encloser aswell however you have to make sure your not trapping the air on the inside of the encloser at the same time. For me and all the enclosures I build for my customers I spend about 2 weeks of engineering with three programs to get Port area Port velocity and DB of rise properly dialed in according to the true TS parameters of the woofer and not just what the company says they are I usually try to pull them myself using the dats v.2 module and program. Also just a quick background I've been working with a close friend who is a sound engineer that's been in this field professionally for over 30 years and have been building for 8 years this year to shed some light on the subject.
@@justforlaughs8988 If you had a soda straw and blew into it and measured the velocity of air coming out the other end. Then you flared both ends and you blew into it would the air velocity increase?
I appreciate your insight and honestly! I love the way a Kerf port LOOKS, but I have never heard it sound any smoother than a slotted port. But I will say, when I used to build my own boxes (20+ years ago when I competed DB Drag Racing), I always used Aero Ports or 3-4" PVC with Aero Port end caps, the bass transition was always smoother....more musical...then slotted ports became popular because they were cheaper to create, and easier to tune...but never sounded as good to me....and I knew this before everybody started relying on computer programs...I built and tuned by ear. Glad I'm not the only fabricating genius in the game J/K ;-)
Appreciate the feedback on the port reason i was asking is i built a Center verticle kerfd port box kerfd outside and inside the box as well and thats what i had in mind when i built it trying to mimic an areoport thinkin id gain a little more velocity across the port what i done is went by jl audio port area for the w7 12 and doubled it or close to double centerway of the port since i was running 2 12s widthwise i done 3.6 inches side to side from port wall to port wall firing subwoofers up the inside of the kerf is 1.8 inches from the side section of the box and flares back 7 inches the one thing ive noticed on a lot of kerfd enclosures is there not kerfd inside the box and they lose a lot of low end response i like to squeeze each chamber but your right i cant calculate exactly on cubic space but i know each chamber was at 2.2 cubes before kerfings going by the lines i drew out which is bigger than jl recomends for the w7 12 but that was for tuning at 36 hertz for me 34 is my sweet spot and all i can say is i got lucky 147.3 ar 40 hertz on ssa meter winshield score with driver door open most boxes ive built before would muddy those low notes but the more i crank the volume the louder it gets ive done a lot of sound deading in my f 150 tho what made all the difference is me flipping my box around with the port torwards the back of the cab but my poor ole w7s give out every 6 months on those jl slash 1000 amps and i beat the brakes off of them but i dont mind building them this ill be the 3rd time in 5 yrs and i must say you havent rebuilt a subwoofer until you build a w7 tight tolerences alls im sayin but i likem.Anyway Keep up the good work bro!
You and your awesome work has inspired me to get rid of my old Fox Box in my 2018 F150. Just ordered a pair of 8" Q class L7s and a 2 1/2" seat lift. Going to stain it black and I ordered a 6" Areoport I'm going to paint race red to match truck. Going out tomorrow to buy a sheet of hardwood plywood. What one would you recommend that the grain pops with that black stain?
From the box building I've mastered from watching CZcams, and listening to MBEnclosures intently. I think the 4 pyle 15's mounted isobaric, and horn loaded or t-line tuned should get me $3,000.00 bass on my $350.00 bass budget. Any comment from MBEnclosures will be greatly appreciated. Father-God Bless.
@@M.B.Enclosures Thank you for your reply🙏 God is good!! My idea is to fit the enclosure into the rear cargo area, behind the third seat. Down in the subfloor where the 3 row seat would fold flat. I also want to build a loading board over the exposed magnet, as I often load the van for flea market sales. I really want to use it as a demo for flea market car audio brands.
Congratulations on building your brand up to the level that you have, just with your knowledge and hard work. By being able to put yourself on display to the world, and blow it away.
Out of the two port the lower port that has the lip has and slapper responds. The lower port has more volume than the top port because the divider is 3/4 of a inch higher. Giving more freedom to the lower port and a different tune. Basically two different tune ports that looks identical to the eye
I need a birch box like that made for a infinity 860watt reference 8" and a overall box height of 9.25" and 20hz if possible l have one 10" for higher bass frequencies. The port needs to be out the front and set for a plexi top or l need detailed plans
How about a slot ported box, built to sub manufacturer recommended specs, where the end of the inner port wall, inside the box behind the sub, is bullnosed vertically (rounded off), and all interior box vertical corners are braced with quarter dowels? Value your input thanks
Oh it matters it does create a better Port velocity and Flow whether he believes it or not it's backed by science and sound engineering and acoustics also kerf ports do work and it's been proven when engineered properly
How do you feel about double walling the whole entire box for rigidity?? I ordered blueprints for a band-pass 6th order for a Skar EVL 15 and when I built it I double walled all the side walls what are your thoughts on its helpfulness or wastefulness??
I have a question so are you saying if the port is a few inches lower than when it should the kerf will be more effective. My two 12 box I build had side slot port. That was wide enough but 7 inches short of reaching 24 inches long. Presently I added a divider to retune the port making it a dual square port with 4 kerf side to each port. And to add back pressure I've done a 1 1/2 inch lip on the lower port.
Basically, a kerfs only purpose is to prevent chuffing when the port area is too small. This allows you to tune lower with a smaller port volume and smaller box
@@blakebrockhaus347 disagree…that is why the tune is off …only a aero port allows the box to be slightly smaller. Kerf is cosmetic it doesn’t help but it can hinder port area if not accounted for
It's a shame that you had to cover that BEAUTIFUL PIECE OF ART with the black stain!!! 😐😒☹ I know it's their choice but that's just my opinion!! I LOVE THE WOOD GRAIN because there's a story in that grain. Don't get ME WRONG YOUR ENCLOSURE'S ARE ALL PIECE OF ART EVERY SINGLE ONE NO MATTER WHAT!! I just like to see the wood grain.
Once again you are wrong air does move in and out of the box and it does this because of the vibration of the air along with an object moving this object is the sub. Put something in front of the port I 100% guarantee you that it will be pushed and pulled. Also air most definitely does come out of the box idk why you don't understand this when you see it happen on a daily basis. You may be a box designer and builder but you are lacking physics and it shows.
The column of air in the port is reacting with the outside air, it appears it moving in and out out only the dense volume of air in the port is moving within the port. You may need to study more.
Another great and informative video. Keep up the amazing work and keep feeding us with your knowledge. Have an amazing day and may God continue to bless you and your family. ✌
Thank you Ahk. I been saying this for years.
Hold up there dude on my engineering programming specifically on kerf ports it does increase the port velocity I've done the tests with dry ice and also the engineering tools so you can't say that that's not entirely true it does look beautiful and it puts a nice touch on an enclosure however it does increase Port velocity you do have to account for the tuning aspect of it because it'll go up and you have to extend into the enclosure but you can definitely account and calculate for that
Shouldn't a kerf port decrease port velocity not increase it.
Hey hey you guys heard what the animal said!!! LOL
@@ddtstrc9678 yes and no it will increase the velocity at the kerf cause you can take in more air and have smoother transitions, but you have to have the kerf on the inside of the encloser aswell however you have to make sure your not trapping the air on the inside of the encloser at the same time. For me and all the enclosures I build for my customers I spend about 2 weeks of engineering with three programs to get Port area Port velocity and DB of rise properly dialed in according to the true TS parameters of the woofer and not just what the company says they are I usually try to pull them myself using the dats v.2 module and program. Also just a quick background I've been working with a close friend who is a sound engineer that's been in this field professionally for over 30 years and have been building for 8 years this year to shed some light on the subject.
@@justforlaughs8988 If you had a soda straw and blew into it and measured the velocity of air coming out the other end. Then you flared both ends and you blew into it would the air velocity increase?
@@ddtstrc9678 yes it would you are correct
Can’t wait to Oder my box from you bro all the way from Trinidad 🇹🇹🇹🇹💯💯
I appreciate your insight and honestly! I love the way a Kerf port LOOKS, but I have never heard it sound any smoother than a slotted port. But I will say, when I used to build my own boxes (20+ years ago when I competed DB Drag Racing), I always used Aero Ports or 3-4" PVC with Aero Port end caps, the bass transition was always smoother....more musical...then slotted ports became popular because they were cheaper to create, and easier to tune...but never sounded as good to me....and I knew this before everybody started relying on computer programs...I built and tuned by ear. Glad I'm not the only fabricating genius in the game J/K ;-)
Tune in tonight on Kicker Unmasked. MBE will be on the show!!!
Appreciate the feedback on the port reason i was asking is i built a Center verticle kerfd port box kerfd outside and inside the box as well and thats what i had in mind when i built it trying to mimic an areoport thinkin id gain a little more velocity across the port what i done is went by jl audio port area for the w7 12 and doubled it or close to double centerway of the port since i was running 2 12s widthwise i done 3.6 inches side to side from port wall to port wall firing subwoofers up the inside of the kerf is 1.8 inches from the side section of the box and flares back 7 inches the one thing ive noticed on a lot of kerfd enclosures is there not kerfd inside the box and they lose a lot of low end response i like to squeeze each chamber but your right i cant calculate exactly on cubic space but i know each chamber was at 2.2 cubes before kerfings going by the lines i drew out which is bigger than jl recomends for the w7 12 but that was for tuning at 36 hertz for me 34 is my sweet spot and all i can say is i got lucky 147.3 ar 40 hertz on ssa meter winshield score with driver door open most boxes ive built before would muddy those low notes but the more i crank the volume the louder it gets ive done a lot of sound deading in my f 150 tho what made all the difference is me flipping my box around with the port torwards the back of the cab but my poor ole w7s give out every 6 months on those jl slash 1000 amps and i beat the brakes off of them but i dont mind building them this ill be the 3rd time in 5 yrs and i must say you havent rebuilt a subwoofer until you build a w7 tight tolerences alls im sayin but i likem.Anyway Keep up the good work bro!
Yep kerf only increases surface area which decreases velocity due to Bernoulli principle
You and your awesome work has inspired me to get rid of my old Fox Box in my 2018 F150. Just ordered a pair of 8" Q class L7s and a 2 1/2" seat lift. Going to stain it black and I ordered a 6" Areoport I'm going to paint race red to match truck. Going out tomorrow to buy a sheet of hardwood plywood. What one would you recommend that the grain pops with that black stain?
That gray stain hard af 🔥🔥 🔥 ❤
MBEnclosures LLC congrats on the kicker unmasked interview You still gonna do the isobaric build
From the box building I've mastered from watching CZcams, and listening to MBEnclosures intently. I think the 4 pyle 15's mounted isobaric, and horn loaded or t-line tuned should get me $3,000.00 bass on my $350.00 bass budget. Any comment from MBEnclosures will be greatly appreciated.
Father-God Bless.
@@carlosmaple162 which pyle subwoofers do you plan on using they had cool logos
@@carlosmaple162 maybe
@@M.B.Enclosures Thank you for your reply🙏 God is good!!
My idea is to fit the enclosure into the rear cargo area, behind the third seat. Down in the subfloor where the 3 row seat would fold flat. I also want to build a loading board over the exposed magnet, as I often load the van for flea market sales. I really want to use it as a demo for flea market car audio brands.
Congratulations on building your brand up to the level that you have, just with your knowledge and hard work. By being able to put yourself on display to the world, and blow it away.
Out of the two port the lower port that has the lip has and slapper responds. The lower port has more volume than the top port because the divider is 3/4 of a inch higher. Giving more freedom to the lower port and a different tune. Basically two different tune ports that looks identical to the eye
Sounds like you have a 6th order.
what, your talking about a 6th order box, and has no relevance to what he just talked about for 1o minutes
I need a birch box like that made for a infinity 860watt reference 8" and a overall box height of 9.25" and 20hz if possible l have one 10" for higher bass frequencies. The port needs to be out the front and set for a plexi top or l need detailed plans
my man, you need a mic, , respect
Do you pro audio boxes
How long are the 4" aero ports in the truck boxes? Seems like their about half the length? I'm trying to get a base length to try to tune my box..
U touched in 45 in the corners do they really help with air movement ? Also what about putting a 45 in the L part of the port. Does that help?
I really want this answered. I know they help but not to what extent.
When is that Kicker live event?
Tonight I believe
How about a slot ported box, built to sub manufacturer recommended specs, where the end of the inner port wall, inside the box behind the sub, is bullnosed vertically (rounded off), and all interior box vertical corners are braced with quarter dowels? Value your input thanks
What time will be the kicker unmasked
The audiophiles of the world need to hear this....but I don't think they can handle it!
What is up dude good morning!
10.4k subscribers.....deezamn. Whatcha gonn do with all that CZcams money?! 😇🥰
💯
So do the 45’s inside the enclosure assist with a smoother air flow? Or does it even matter? So are they even necessary? Thanks MBE
Oh it matters it does create a better Port velocity and Flow whether he believes it or not it's backed by science and sound engineering and acoustics also kerf ports do work and it's been proven when engineered properly
How do you feel about double walling the whole entire box for rigidity?? I ordered blueprints for a band-pass 6th order for a Skar EVL 15 and when I built it I double walled all the side walls what are your thoughts on its helpfulness or wastefulness??
Thank you I was hoping to reduce the need for internal bracing by doing that I'm no box builder but I think it came out pretty well..
I have a question so are you saying if the port is a few inches lower than when it should the kerf will be more effective. My two 12 box I build had side slot port. That was wide enough but 7 inches short of reaching 24 inches long. Presently I added a divider to retune the port making it a dual square port with 4 kerf side to each port. And to add back pressure I've done a 1 1/2 inch lip on the lower port.
Basically, a kerfs only purpose is to prevent chuffing when the port area is too small. This allows you to tune lower with a smaller port volume and smaller box
@@blakebrockhaus347 disagree…that is why the tune is off …only a aero port allows the box to be slightly smaller. Kerf is cosmetic it doesn’t help but it can hinder port area if not accounted for
Not a kerf fan at all..but it looks good tho..
Is there any scientific proo of this or is this just experience?
Thats cool and all but what does it matter when the car shakes so bad time slows down and you cant tell whats going on? Haha
My man, love your channel but that auto follow camera is annoying.
It's a shame that you had to cover that BEAUTIFUL PIECE OF ART with the black stain!!! 😐😒☹ I know it's their choice but that's just my opinion!! I LOVE THE WOOD GRAIN because there's a story in that grain. Don't get ME WRONG YOUR ENCLOSURE'S ARE ALL PIECE OF ART EVERY SINGLE ONE NO MATTER WHAT!! I just like to see the wood grain.
When the clear coat goes on it will look even better
Kerfing is a technique used in making slot ports and it absolutely can be better than "normal" slot port.
Once again you are wrong air does move in and out of the box and it does this because of the vibration of the air along with an object moving this object is the sub.
Put something in front of the port I 100% guarantee you that it will be
pushed and pulled. Also air most definitely does come out of the box idk why you don't understand this when you see it happen on a daily basis.
You may be a box designer and builder but you are lacking physics and it shows.
The column of air in the port is reacting with the outside air, it appears it moving in and out out only the dense volume of air in the port is moving within the port. You may need to study more.