Buck Box Designs - Refreshed Thread

[Buck 5,000+ posts]

My box builder doing some kerfs for a center console box.

 

[Buck 5,000+ posts]

2 Fi SP4 v1 15's b-pillar series 6th order wall going in an extended cab full size pickup truck.

I really like the flow to this box. Everything just happened to lay out perfectly. This box takes my record for the lowest overall tuned box I've ever done, by about 1 hz. It's tuned extremely low, the owner may try to play into the teens with this one. SP4's are also some of my favorite all time subs. I've heard them in person, and they've always sounded very good, IMO.

 

[Buck 5,000+ posts]

Stereo Integrity SQL-12 ported wedge box going in a single cab full size pickup truck.

 

[Ridinhi 5,000+ posts]

Stereo Integrity SQL-12 ported wedge box going in a single cab full size pickup truck.

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Definitely going to be a challenge for me building this but, I’ll just take my time and see how it comes out! Thanks again Buck!

 

[SlugButter]

Definitely going to be a challenge for me building this but, I’ll just take my time and see how it comes out! Thanks again Buck!

What’s your port tuning? Good looking design.

 

[Ridinhi 5,000+ posts]

What’s your port tuning? Good looking design.

32hz

 

[Buck 5,000+ posts]

32hz

I like that box. I've been working on improving my designs, all the time, of course.

In most situations, I am pro-slot port. There's a way to lay out slot ports to force air compression at different stages within the enclosure, sort of like a tapered and folded t-line (inverse expanding width horn). Not every box can be designed like this; it is situation dependent, but I try to flow like this whenever I can. I'm not sure if there's any specific term for this type of sound-design within a ported sub box, but I like to think of it as pressure-staging. The port tunes the box due to the restriction/resistance/impedance that it introduces into the cycling pressures moving in and out of the box. The air inside of the main subwoofer chamber gets squeezed down (resistance/impedance) and all stuffed inside of the port opening(s) at relatively very high pressure, considering the rest of the pressures in the system. I guess it's technically a type of acoustical coupling inside of the enclosure itself that I'm explaining, where I'm trying to couple the internal port opening to the airspace inside of the box, using the design of the ported chamber to step-increase air density of the rear air-wave as it makes its way from the back of the sub to the internal port opening. I feel like I'm on the verge of giving away some secret sauce, if you're following.

I'm not sure if people understand some of the finer details of how I design. Idk if other people do this; I just developed this knowledge over time from building, installing and hearing many systems, as well as studying a ton of raw sound physics, mainly quarter wave physics. I also study electricity and things like how air pressure works with aircrafts and flight, for example, and that really helps understand air impedance and how just the shape of the air can change the way the enclosure works, to whatever degree. I don't know exactly how much difference intentionally designing like I'm talking about makes. I'm not even sure that many people would follow along if I tested this theory out with an actual build, looking for secondary resonances within sub boxes that could be intentionally designed in.

I know people in the audio industry; I'll just say it like that. I've had industry audio friends keep info from me for competition reasons, then eventually show me what they're doing. Series SPL competitors use 1/4 wave math to create secondary resonances to help boost their scores, just with ported boxes. And that's all I want to explain on that, but what I'm doing is the same concept, just with musical boxes. I literally try to do any small thing I can to make the box sound better. I'll go back and forth sizing different 45's and moving bracing around to try to create specific effects within the enclosure that are aimed at making the enclosure sound better just across the board (SPL over a bandwidth, if you will).

I've got hybrid/maybe rarely or never seen/used style designs I'm trying to test out, to anyone who reads this. Lmk if you're bored and have a ton of space to play with, whether if it's in a vehicle or in a house or boat or plane or semi-truck or UFO, idc. I'm trying to do some stuff like parallel 6th order t-lines and horns, if that makes sense. I'm not sure if that's the correct technical name, but just try to visualize that in your mind. I'm not just recklessly testing. I'm trying to figure out what style enclosures can be used in certain situations to create a huge advantage over more simple enclosures, all in the name of loud, musical bass. There's all sorts of subwoofer enclosures that can be used that people have no idea are even possible, and I think there could be many advantages to some complex enclosures, especially in the SPL world and in home audio. Home audio is something I wish I could do more. I wish I could get more home audio customers, because that's where people have the space to try to make lower powered systems as loud and efficient as possible. HT environments are just a different type of animal, at least compared to most vehicles. So, hit me up if you want to do some fun, advanced box building and testing. You might get a box you keep forever, and the design might be free.

 

[Ridinhi 5,000+ posts]

I like that box. I've been working on improving my designs, all the time, of course.

In most situations, I am pro-slot port. There's a way to lay out slot ports to force air compression at different stages within the enclosure, sort of like a tapered and folded t-line (inverse expanding width horn). Not every box can be designed like this; it is situation dependent, but I try to flow like this whenever I can. I'm not sure if there's any specific term for this type of sound-design within a ported sub box, but I like to think of it as pressure-staging. The port tunes the box due to the restriction/resistance/impedance that it introduces into the cycling pressures moving in and out of the box. The air inside of the main subwoofer chamber gets squeezed down (resistance/impedance) and all stuffed inside of the port opening(s) at relatively very high pressure, considering the rest of the pressures in the system. I guess it's technically a type of acoustical coupling inside of the enclosure itself that I'm explaining, where I'm trying to couple the internal port opening to the airspace inside of the box, using the design of the ported chamber to step-increase air density of the rear air-wave as it makes its way from the back of the sub to the internal port opening. I feel like I'm on the verge of giving away some secret sauce, if you're following.

I'm not sure if people understand some of the finer details of how I design. Idk if other people do this; I just developed this knowledge over time from building, installing and hearing many systems, as well as studying a ton of raw sound physics, mainly quarter wave physics. I also study electricity and things like how air pressure works with aircrafts and flight, for example, and that really helps understand air impedance and how just the shape of the air can change the way the enclosure works, to whatever degree. I don't know exactly how much difference intentionally designing like I'm talking about makes. I'm not even sure that many people would follow along if I tested this theory out with an actual build, looking for secondary resonances within sub boxes that could be intentionally designed in.

I know people in the audio industry; I'll just say it like that. I've had industry audio friends keep info from me for competition reasons, then eventually show me what they're doing. Series SPL competitors use 1/4 wave math to create secondary resonances to help boost their scores, just with ported boxes. And that's all I want to explain on that, but what I'm doing is the same concept, just with musical boxes. I literally try to do any small thing I can to make the box sound better. I'll go back and forth sizing different 45's and moving bracing around to try to create specific effects within the enclosure that are aimed at making the enclosure sound better just across the board (SPL over a bandwidth, if you will).

I've got hybrid/maybe rarely or never seen/used style designs I'm trying to test out, to anyone who reads this. Lmk if you're bored and have a ton of space to play with, whether if it's in a vehicle or in a house or boat or plane or semi-truck or UFO, idc. I'm trying to do some stuff like parallel 6th order t-lines and horns, if that makes sense. I'm not sure if that's the correct technical name, but just try to visualize that in your mind. I'm not just recklessly testing. I'm trying to figure out what style enclosures can be used in certain situations to create a huge advantage over more simple enclosures, all in the name of loud, musical bass. There's all sorts of subwoofer enclosures that can be used that people have no idea are even possible, and I think there could be many advantages to some complex enclosures, especially in the SPL world and in home audio. Home audio is something I wish I could do more. I wish I could get more home audio customers, because that's where people have the space to try to make lower powered systems as loud and efficient as possible. HT environments are just a different type of animal, at least compared to most vehicles. So, hit me up if you want to do some fun, advanced box building and testing. You might get a box you keep forever, and the design might be free.

I’m layman’s terms = I am a bad m^therf^cker when it comes to designing boxes

 

[Buck 5,000+ posts]

I’m layman’s terms = I am a bad m^therf^cker when it comes to designing boxes

Haha, I appreciate that. Sound is alive, and sometimes, results can be elusive, so I don't really wanna brag and jinx myself. All I really wanna do is design some more crazy boxes.

 

[Buck 5,000+ posts]

This is a customer pic from a window that my builder engraved with an aggressive looking gorilla:

 

[Buck 5,000+ posts]

 

[Buck 5,000+ posts]

Amp rack cover done by my box builder:

 

[Buck 5,000+ posts]

3 DC Level 5 12's ported going in the trunk of a large sedan.

RIP trunk

10,500 watts of subs on a Sundown Salt-12k...in a trunk...

 

[Buck 5,000+ posts]

2 Skar DDX 12's ported going in a sedan trunk.

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This one was built by the customer. The top and the color scheme on this box is one of the more unique ones I've seen. I like it. It's refreshing to see a different style like this. From what I'm told, the box worked out well and plays well, so I'm happy about that:

 

[Buck 5,000+ posts]

I want to do a whole box in whatever that top is made out of. I think it would look so cool.