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Wednesday, 27 February 2013

Koss Phase 2+2 Quadraphonic Ear Pad Sock Fix Part 2

This is the second part of my Koss Phase 2+2 Quadraphonic Headphones fix.  

Youtube Video

In this fix I figured out how the get the true shape of the original ear pads using diagrams from the Koss original Patent Application.  I then decided to make a plastic template of the pad shape to work with and select an old white plastic CD box.

I glued the paper to the plastic panel I'd cut out then cut out the shape with a fret saw.

I then checked the shape against the Koss Phase 2+2 right headphone.

Once I knew it fitted I cut the bottom off and old military sock and began folding

The result was something that resembled the original pad and worked thanks the the rigid plastic maintaining the large exit hole.

And here is the partner sock still untouched.

And this is the left side view of the headphones.

More work to be done, but the patent picture provided the only true picture of the shape of the phones.

Cheers fixed1t

Saturday, 2 February 2013

Koss Phase 2+2 Quadraphonic Controller Headphones Repair Part 1


In the 70's the dream system for the music heads 'geeks of the time' was Quadraphonic.  Unfortunately it didn't catch on that well, well not for 20 years, partially because the system diagrams at the time showed huge rooms with 4 speakers strategically placed in each corner and most UK houses had no such thing.

The was a HiFi shop in Aldershot not far from my Dental Corps barracks that was heavily into Quad so I bought a Ferguson Quadraphonic Amp, 4 huge JVC speakers, a JVC CD-4 decoder and I was hooked.

Of course in the billet there was little room to set the system up without the agreement of the guy in the opposite bed.  I loved the system and the sound was amazing.

But on a trip to Guildford I came across a shop selling the

Koss Phase 2+2 Quadraphonic Headphones 

with Ambience Expanders, Binauralators, Quad Field and Quad Comparator

For weeks I used to go there and try them on and try different combinations of the programmer settings.  But I couldn't afford them and them and then I moved away.

Ever since I first discovered eBay I've been looking for a pair with absolutely no luck and then suddenly I came across 2 pairs in quick succession, alas both in an awful state of repair.  But being fixed1t I couldn't resist giving it a go.

So I set about repairing one to see if it was possible.

The link below is to my youtube video of the repair of the controller box.

I will be doing another video to show on how I solved the issue of replacing the bizarre and huge headphone pads.

The Music is an Ambient composition called "Raindrops" by fixed1t

If you like the video, check out my other blogs and videos on fixed1t youtube.

Cheers fixed1t