
By vinyl_junkie_1620
Mon Apr 16, 2012 8:02 pm
JVC wrote:To vinyl_junkie_1620,
I want that Bozak mixer! What did you have to fix on the mixer? did you have to replace pots (did you just clean up the pots), etc? I don't think the those pots are manufactured anymore. Please tell us about the restoring process.
Hi mate, nothing to fix on the mixer but it does need a bit of a service.
It's a early silver one with the original mainboard without the FX loop, I could of had a later revision board but it's not a feature I need and can always later modify it.
It has 3x later version phono boards with the newer transistors, mic and output boards are original early ones as is the summing amp board.
It also has a rare true booth out board (newer type transistors) but at the moment I have not modified it to have a booth out so it's only acting as a Tape Booster.
The pots are original Allen & Bradly, early Bozak's had these fitted whilst later ones came with ALPS RK-40's also known as Black Beauty's (Urei 1620 and original Rane MP-2016 also used these but not the Urei 1620LE as by that time you couldn't get them any more so that uses RK-27's which are not as good)
I brought 8 New Old stock ALPS RK-40 to fit as the original pots are totally shot due to age.
I'm having it serviced by Justin at Isonoe, he's going to replace the PSU with a external one making the mixer almost silent (As standard it's already much more quiet than the Urei!)
He's going to replace all the pots, re-cap the whole mixer as they are all veery old and also fix a little weird issue I have with it... The tape out is 180 degrees out of phase!
After the service it should sound sweeeett and have a dynamic range close to that of a CD.
Any way... here is what it sounds like at the moment (I used something every one will know) Recorded with a very worn Grado DJ-200i
http://www.sendspace.com/file/utroga
Some more info on the external PSU
http://www.isonoe.com/custom-equipment.html
Here is a quick video of it
http://www.youtube.com/watch?v=0vEJYo12 ... ature=plcp






