setting up my Neovibe and comparsion to the Mojo-Vibe

Started by yeeshkul, November 09, 2008, 10:18:25 AM

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yeeshkul

Well, i was a bit unhappy with the treble lost of my Neo comparing to Mojo and so i spend a hour experimenting with both and this is the result.
For the time being I am using some sort of cheap photocells(10k light -1M dark), but a handfull of posh Silonexes are on the way from smallbear.

I noticed that when i turn the intensity pot all the way down on both units, then while Mojo sounds almost exactly like when bypassed, my old thing gets a bit too dull.

If i am not mistaken it works as follows: intensity down -> bulb light turns low -> cells' impedance rises -> treble loss happens on these high impedances in the signal path.

I haven't taken away the light shield from Mojo, but judging by what i could see from the other side of the board, the bulb is pretty low. That means that Mojo cells must be extremely sensitive for light. On the other hand a lot less prominent pulsing, that is drawback of the MojoVibe, can be caused by the mojo cell-sensitivity sitting too much at the the low impedance area.

I reached the best matching bypass/neo sound at 200 ohms on the darlington (JC mod) emitter. The bulb is pretty high though and the fidelity of the sound(again - intesity all the way down) is still not as good as with Mojo.
I am sure all the "magic" must be in cells, but even Mojo doesn't have the ideal ones. But after all - who does :)



bpier

Hi yeeshkul. What are the values of the mojo cells ?