speakerstuff

With all this work I’ve decided to ditch the Tritrix and upgrade to the MTM.  Considering the time and money already spent, the cost difference is pretty minimal.  The enclosure and baffle are identical.

Progress has been slow but steady as the weather hasn’t been great for working in the garage.  Here I drilled some holes for dowels using a drill press and template.

For the bottoms, I drilled holes all the way through and used hurricane nuts so I can use these later to bolt the box to the stand.

And the next layer from the bottom is the brace, so the holes will be covered…

It’s been so cold outside I had to bring everything inside for gluing.  I did two layers at a time and clamped.  I tried three at a time but I couldn’t get enough clamp pressure to close everything.  Two layers was just fine with about 30 minutes clamp pressure.  The dowels help a lot with gluing.  Despite using a drill press and template to make holes for the dowels, it still wasn’t perfectly aligned.

Here are both enclosures glued with one sanded.  For sanding I started with 100 grit because it was the roughest I had on hand.  After 20 minutes of little progress and an arm that was about to fall off, I ran to the store and got some 60 grit which went MUCH faster.  The finished off with some 220 grit.  I applied one coat of Zinsser sanding sealer (sealcoat) on the inside before applying the acoustic foam.

This is the 3/4″ Parts Express sonic barrier.  Feels stiff and heavy duty, I like it!

I dumped the sawdust from the sander and mixed it with PVA glue to fill the voids.

That’s it for now!