Norval

Thanks Groomlake that info helps a lot. It does seem then that someone must have removed some of the stuffing inside the box. There are bracings in the corners of the boxes, it was just strange to find no additional braces, even with the rear pannel recessed but it doesn't seem to be a problem though. I have though decided to insert a cross brace on the rear and side panels just as an extra measure. Dflip thanks to you as well for the info given, but I'm very familiar with speaker box design myself. This being a sealed design means that a little extra internal bracing shouldn't effect the speaker response since it should take up a very small percentage of internal volume. I've now finnished the speakers with the few minor mods, and new gasket and it sounds quite good foor the money. Very different from my own Chario Accademy 1's but I can see why so many like them.

Very nice looking amps indeed.

Hi all Klipsch enthusiast I have a set of Heresy II's that belonngs to a friend that I have to repair. Its still in very good shape overall, the only problem is a distortion at around 120 to 130 Hz at high volumes on the one speaker. I tested it and localized the problem to be bad coupling of the bass driver to the cabinet. So I replaced the gasket and replaced the screws with t-nuts and bolts and the problem seems to be cured. Now questions: 1) The boxes are made from 15mm plywood, and no internal bracing to make the cabinets more sturdy. Are there a reason for that? Would it do any harm to brace the cabinets inside? I'm asking the question since I know some like Castle Harbeth for example build their boxes to resonate. Would that be the same with the Klipsch? 2) There are very little internal damping (stuffing) inside, which is quite uncommon for sealed boxes. Any reason for that? Would it be benificial to put more stuffing or should I rather leave it as is? Thank you so long []