XR VCO with +/- 9 Volt batteries? no matched pairs??

[loss1234]

Hey
i've got a xr2206 burning a hole in my part pile and id love to try the xrvco but dont have all the right parts. first i dont have the right kind of bipolar power supply so i was wondering if i could use the 2 9volt batteries trick?

also if i use a few different resistor or cap values and non matches transistors will it still make sound? i dont expect it to be perfect or pretty but i want to get it hooked up to my new little cv sequencer i built. and the 555 oscillator is driving me nuts.


thanks for all help.

[Tim Servo]

[fonik]

maybe you will find this circuit handy for matching transistors yourself (i can't remember where i once got it from, so if anyone knows, i would be happy to replace the upload by a link):

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[loss1234]

thanks alot
yeah this isnt for a real serious application, just want a vco with more power than a 555 square wave can provide.

when i build it for real i will get a matched pair for sure.

thanks

so the 9volts wont be a problem??

[State Machine]

[fabreeze]

Fonik,
I think that schematic for matching transistors comes from the MiniMoog Service Manual.