Infinite Baffle Gallery

Original drawing

The final product turned out very close to this sketchup design

Original sketchup drawing


Drivers arrive

Twelve 15inch Venoms.

Photo of driver boxes


Gluing of manifolds

It's hard to beat the old "rope tightened with a stick" technique. It's been around for a long long time...

Photo of manifolds


Finished sanding

These look so good it's a shame to hide them in a wall

Photo of raw manifolds


Test fit - back

Still be able to see the back though....

Photo of back of manifold


Holes for the manifolds

This old house has no noggins, so no structural members were cut. The manifold width was designed to just fit between the studs.

Photo of holes for manifolds


Test fit - front

Once the grille cloth is on, it should be quite neat

Photo of manifold in wall


Mounting screws

In the past, I've used normal screws to hold drivers. As long as they're not done up too tight, they work just fine.
I'm going to try these roofing screws which are about to be sprayed black. Twelve drivers certainly need a lot of screws!

Photo of screws


Mounting detail

The Venom driver comes with a removable rubber gasket that slips over the driver lip. Adding washers to the mounting screws allows a firm mount without overly crushing the gasket. This shot was taken after the initial tightening with a cordless drill which had a safe setting on the clutch. A cardboard template was made up to mark where to drill the screw holes. The small rebate makes locating the template easier, as well as holding the driver roughly inplace during install.

Photo of driver mounted


Ready to install

One of the two manifolds

Photo of manifold


Front view

There's a fair bit of weight per side....
Manifold 33 kg
Drivers 42 kg
Plinth 8 kg
Grille 2 kg
Total 85 kg or 187 lbs

Photo of front of manifold


Rear view of installation

Photo of rear of installed manifold



Silicone was used to seal and isolate the manifold from the house framing. A spatula was used to get a smooth finish. Sealing two manifolds on both sides of the wall took 10 tubes.

Photo of manifold floated with silicone



Shelf brace, driver opening rollover and top edge bracing

Photo of manifold throat


The bottom brace was cut to allow the mains to site inside the subs.


Final setup

QRD Diffusers mounted next to the manifolds.


/IB/IB-gallery.htm last modified: 19 February 2019
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