Thanks very much for your designs and making them available in tandem
with Jantzen, who were very personable.
I work in the architecture industry here in Melbourne and through that
came across the hardwood (Australian spotted gum) plywood that these
speaker cabinets are made from. It’s made by a company called Big River
and is very heavy, rigid and dense, so I went for 21mm and adjusted your
Studio 101 drawings to suit the material while maintaining the correct
volume (I went for 22 litres with the port to the back). I had the ply
CNC machined by a local company I work with occasionally to make
After a little hand planing and sanding to fit the cabinets together
with drivers, the cabinets went together very snuggly with taped mitres.
They were sanded then finished with Danish oil (no polyurethane).
Damping as per your instructions, very handily stapled in with an
upholstery staple gun.
I’m very happy with the sound; I grew up listening to my dad’s ProAc
Super Towers, which have the same Scanspeak drivers, and the sound is
just the right blend of clarity and warmth for my ears. These are a
sensible sized speaker for the room I now have them in and the sound
continues to improve with some hours mounting up.
No doubt I’ll be back for another project at some point, please keep up
the good work! I’m happy to help anyone who is considering CNC’ing one
of your speaker builds - it’s a good alternative for people like me
without fully functioning workshops at home.