Not sure this is the right forum or if DIY is the place, since this is 50% - 50% of each.
Anyway, here goes (fell free to move to DIY if that is where it should be)
I purchased a pair of 1987 La Scalas with AL cross overs in February and have rehabed them over about a 6 week period.
The main reason for posting is to show that even with zero
previous wood working experience it is possible to restore these speakers to like new condition.
My objective was to restore these and convert them to be similar to La Scala II.
They were in a bit of a rough condition, with various edge and corner damage on the plywood panels. Also, the interior was painted black.
Steps were as follows:
1 - cut the top off
2 - repair all damage and fill in holes
3 - glue a 1/4" MDF layer to all sides of the bass bin to stiffen structure to reduce resonance.
4 - Insert Volti wedges to further stiffen bass bin.
5 - Build a new top section, to be removable as in La Scala II. I made thie top taller than La Scala II to give me flexibility in horn/driver selection. The motor-board is removable so that I can change horns without having to rebuild the top.
6 - Veneered all surfaces with mahogany, stained with mahogany red dye and several coats of polyurethane finish, with sanding between each coat.
7 - Replaced the AL crossovers with Crites Type A/4500 (using for mid & tweeter)
8 - Replaced the tweeter with Crites tweeter and a Tractrix horn
9 - Made grills for the top and bass bin.
I also am using active cross over to correct the alignment between sub, bass bin and mid/tweeter sections.
You can see how it turned out. I am very happy with my modified LaScalas.
Incredible dynamics and clarity in the mids.
The restoration was not 100% replica of LaScala II (due to the taller top), so Klipsch purist may not like it, but it is what I wanted.
Hopefully, others with no wood working skills may be inspired to buy a set of these great speakers for restoration and then enjoyment.
All you need to do is to read up a bit, get the right tools, and them patiently go about the restoration.
Measure everything twice, cut with care/precision, and follow directions carefully in dye preparation/application and veneering. Be sure to not get in a hurry in the final steps and follow instructions in sanding between urethane layers and you can end up with beautiful results.