Joyo - JF-06 Vintage Phase

zzzapfizz · Post by **zzzapfizz** » 02 Nov 2012, 10:26

Couldn't find any post on the JF-06 MXR Phase 90 clone so here you go.
Wonder if the 2N5952 transistors are matched

guycapuano · Post by **guycapuano** » 02 Nov 2012, 13:06

They kind of would have to be matched for it to work out properly.

zzzapfizz · Post by **zzzapfizz** » 02 Nov 2012, 14:06

guycapuano wrote:They kind of would have to be matched for it to work out properly.

Thanks. Do you think it will i perform smother with closer tolerance? Some seems to think so, but I've not been able to find any examples.
I bought this pedal after realizing that all of the MPX versions needed some tweeks to make them perform at they're best. If I need to do mod anyway, why not do it on this cheep version

I've noticed one thing. Look at the two diodes at the power inlet. They're raised up from the PCB board. There are a couple of resistor that are mounted the same way. Is this doe to sloppy mounting, or are they mounted that way on purpose to hook up metering?

Dirk_Hendrik · Post by **Dirk_Hendrik** » 02 Nov 2012, 17:43

Quite sone years ago I had a fried Boss phaser staying over. Among other things even the FET's were very dead. Takes quite some effort to achieve that.

Anyway, that was my first adventure into FET matching and therefoer I breadboarded a quuick FET matcher setup.

First FET in: Reading.
Next: Same reading
next: some mV different
Next, initial reading again
This went on for quite some FET's and I started to doubt my FET matcher. So I took te junk bin and started testing random FET's. All different readings. Back to the originally tested ones which all measured exactly the same again. What the originals did have in common though is that they all came from the same batch/production run.

Which made me conclude that apparently these manufacturers have their process in control so tightly that spec-deviations in a batch are minimal. Therefore I highly doubt that soldering matched FET's in this Joyo will offer any improvement since what's in it is matched already. Therefore save yourself the energy.

my 2 cents

gaskocher · Post by **gaskocher** » 28 Jun 2013, 18:36

Hi guys,

I got the Harley Benton Vinage Phase (Joyo JC-06) and I was trying to do the R28 mod to get rid of the distortion this pedal produces while engaged.
Could't find the resistor (24k) on the PCB and maybe someone alread did the mod to his pedal.

Thanks for your reply!

Nacho5 · Post by **Nacho5** » 20 Dec 2013, 19:00

Hi guys, i want to mod my joyo vintage phase like a mxr phase 90 but i can't find the resistor that i have to conect to a spst toggle. I search the schematic but i don't succed.

Can you help me?Thanks

Joyo - JF-06 Vintage Phase [schematic]