the Superex professional ST-PRO-B mods

[goraman]

Every one who has heard them loves them and is suprised at the layers in even the lowest bass and there sealed ability to block out noise and create a 3D open air sound feild that extends way outside of your head with vast space between insterments and I have listened to them for 12 and 14 hour sessions with no problems other than sweaty ears.They are a 2 way headphone with a crossover offering awsome bass a fat midrange and nice easy detailed highs that wont offend your ears.

Made in 1968 as good as they are there is very small improvements to be made.
and just renewing the ear cussions has been trial and error till I discovered the trick.

I am trying something different right now as pictured on the headphones here,There is to some point a relationship beween pad thickness and bass.If you have exsive bass and not much soundstage the pads are worn out,but a thicker pad will only give you wider soundstage to a point and to thick bass suffers.I think Superex factory pads found the sweet spot so after a little more fooling around I'll put the rebuilt factory pads back on. The factory cussions can be rebuilt useing 1 inch medum dencity foam by makeing 2 slices in the inside of the pads pulling up the foam and cutting it in half then pulling it out slowly with needle nose pliers.
Then cut a very long strip 17"long 1"X1" of foam and push,pull it into the hollow vynil pads and cut off any excess then use a little black electritions tape to cover the cuts you made and install,the repair should be invisable when assembled.

The fist 3 pictures where experimental, pic4 you can see the yellow worn down foam that was removed and the black pads refoamed from the 1" foam sheet.

I have dissasembled 4 sets of pads and rebuilt them,I can say with 100% certainty they only used foam so the gel rumors can be sqwashed.