X-CANS V1 upgrade completed and distortion issue resolved.

[markb]

Just finished repairing/upgrading my X-Cans V1, I purchased this unit on eBay, when it arrived it distorted badly with hard to drive headphones like my Beyerdynamic DT-1990's 250Ohm.

Decided to give it the Pink Floyd upgrade (Thanks "Mike" for the Kit) and while in pieces solder in sockets and change the OpAmps to BurrBrown OPA2134PA's

You can see below the new OpAmp sockets.


Below you can see all the caps that have been changed out, and some crappy Sovtek 6922 test tubes.


Discarded old components






Finished with bright Blue LED for a last touch.



Tested the newly upgraded unit with the cheap russian valves that came with it (6H23n-EB), and it still distorted badly.

So I threw in my Sovtek 6922 test tubes, now the unit no longer distorts and sounds only ok due the crappy valves currently in the unit. Have some sweet ones on the way from 1962 !!

Tried another set of Philips JAN 6922's and it sounded incredible.  Happy camper

[PinkFloyd]

Hi Mark,

Lovely neat job, well done.

The amp will sound crappy if your valves are knackered, it sounds like they are! 6H23N-EB are gorgeous sounding valves, shitloads better than Philips 6922, so I can only assume the pair you had fitted were way out of spec.

That blue LED looks like it would burn your retina at 100 yards so replace the stock 330R resistor with a 5K type, that will tone it down to a nice, soothing, subtle glow..... the resistor in question is R6...... remove it and fit a 5K resistor in its place..... the result will be a nice warm, subtle glow. A lot nicer than the search and rescue "thang" you've got going on at the moment

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A 5K resistor costs about ten a penny... they are as cheap as a tenth of a penny chew...... I'm more than happy to send you one for FREE but the postage will be 60 pence.

All the best,

Mike.

[markb]

Hi Mike,

cool thanks will look into it, it is a bit bright