Sold FS: 2 15s "ABC" Box

RidnClean
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selling cause i may be moving to 18s in the expo.

box is all birch too! so its light as a mofo.

what exactly is an ABC box:

Aperiodic Bi-Chamber

Dual-Chamber ported systems are systems that have the following physical characteristics:

The system consists of two separate volumes, connected together by a port.

Each volume is vented to the outside by a port.

All ports are typically of the same size and length.

One volume, typically the larger one, contains the driver.

The primary advantage of the dual-chamber system over a simple ported system using the same driver is a further reduction in driver excursion, caused by the addition of a second port resonance within the passband of the system. This reduction in excursion results in increased power handling within the system's passband, making this type of system particularly suitable for use for drivers with low Xmax. However, because of the additional chamber and venting requirements, this system is considerably more difficult to design and build when compared to a simple vented system.

from diy subpage

specs:

7.5cubes total tuned to 32/46Hz

38.5 wide

21.25 tall

37.5 deep

box is left bare so you can paint/wrap to whatever color u want.

price is $150

local sale only.

pics:

howieabc215s3-1.png


100_1058.jpg


P1020095.jpg


P1020098.jpg


SSPX0172.jpg


SSPX0173.jpg


SSPX0106.jpg


 
can you explain the purpose of the box.? I'm interested in the design aspects of it but I am not a part of the other link and it doesn't work if ur not a member.... so what does an abc box do exactly? looks like a dual ported box with 2 different tuning freq. One higher and one lower...? is that a quick summary or am i way off?

 
can you explain the purpose of the box.? I'm interested in the design aspects of it but I am not a part of the other link and it doesn't work if ur not a member.... so what does an abc box do exactly? looks like a dual ported box with 2 different tuning freq. One higher and one lower...? is that a quick summary or am i way off?


Aperiodic Bi-Chamber

Dual-Chamber ported systems are systems that have the following physical characteristics:

The system consists of two separate volumes, connected together by a port.

Each volume is vented to the outside by a port.

All ports are typically of the same size and length.

One volume, typically the larger one, contains the driver.

The primary advantage of the dual-chamber system over a simple ported system using the same driver is a further reduction in driver excursion, caused by the addition of a second port resonance within the passband of the system. This reduction in excursion results in increased power handling within the system's passband, making this type of system particularly suitable for use for drivers with low Xmax. However, because of the additional chamber and venting requirements, this system is considerably more difficult to design and build when compared to a simple vented system.

from diy subpage

 
so basically this box design causes within a narrow range of frequencies an eternal resonance that causes the sub not to move to its full potential therefore allowing you to briefly add a significant more amount of power. basically its a bandpass box that allows withing a set freq range to beat the hells out of your sub with the ability to control its excursion ... interesting. very good for spl I imagine!!!

 
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