Quantum 2, QLS-2 Cabinet Design?

[Bobbyd38]

I have most of the Drivers to build a QLS-2, so I was thinking of Building my Own Cabinets, and I want to stick to the original design as much as possible, but I don't have a pair to evaluate.

I know the Cab size is 49"H x 18"W" x 13"D, and I know the Mid Bass coupler has a Line load Port that comes out the back. What I don't know is the diameter of that Port, or any other internal structures that may be present in the QLS-2?

Does anyone who may have looked inside these have any knowledge of internal Bracing or sectioning off of the Cabinet, or any other considerations to implement in the construction of QLS-2 Cabinets?
Thanks,
Bob

 

[tubed]

I have most of the Drivers to build a QLS-2, so I was thinking of Building my Own Cabinets, and I want to stick to the original design as much as possible, but I don't have a pair to evaluate.

I know the Cab size is 49"H x 18"W" x 13"D, and I know the Mid Bass coupler has a Line load Port that comes out the back. What I don't know is the diameter of that Port, or any other internal structures that may be present in the QLS-2?

Does anyone who may have looked inside these have any knowledge of internal Bracing or sectioning off of the Cabinet, or any other considerations to implement in the construction of QLS-2 Cabinets?
Thanks,
Bob

The tube for the mid bass has a 5 3/4 - 6" diameter.
I'd use cabinet bracing similar to the one in the pic.
Perhaps with the extra bracing material you can determine how much volume was altered and add that to the dimensions as you see fit.
Either that or adjust the polyfil amount

 

[idadude]

I'd read that Bill Watkins complained that the box volume that Infinity used in the Q1 & Q2 design was overboard from what he'd designed the speaker for. The cabinet was too large, so downsizing probably would not hurt. I do not know what the ideal size would be.

LD

 

[chef free]

I'd read that Bill Watkins complained that the box volume that Infinity used in the Q1 & Q2 design was overboard from what he'd designed the speaker for. The cabinet was too large, so downsizing probably would not hurt. I do not know what the ideal size would be.

LD

I was told by Bill Jr. that his father considered the Q3 to be the best "use" of his woofers, and that he designed an interior baffle for the QLS-1 to reduce the cabinet size...