Steel chassis 5x9
barry (Administrator) 11-30-2011 at 02:37 AM.
I have a small number of pre-punched steel chassis. They are the same punching and folding pattern as the medium-sized aluminium chassis that I use for the SE-5a and PP-18 amp kits (see here: http://www.ampmaker.com/store/Punched-ch...5x9.html).
So they're perfect for typical 5-20W projects using 9-pin valves.
There's one minor issue: the 22mm holes that were punched for the 9-pin sockets is just too tight for the ceramic 9-pin valve sockets that I carry, which need a 22.5mm hole. (One of those annoying changes of spec that some manufacturers do without letting anyone know.)
There are two solutions:
1) do a little extra metalwork yourself to widen the holes to 22.5mm
2) I have some alternative sockets that will fit in the holes (not shown in the Webshop, because ordered them specifically for this chassis). So if you want sockets, we can add them to the order manually.
(photo to come)