Tycobrahe Octavia - Positive or Negative ground?

[ItsGiusto]

Hey everyone. I've been working on this Octavia build: http://tagboardeffects.blogspot.com/2013/04/tycobrahe-octavia.html
I've completed the board, and am about to wire up the box. However, it just occurred to me that I don't know if this is supposed to be positive ground, like the original, or if it's been made into negative ground. I'm honestly not sure how I can tell, though it might have to do with what types and orientations of transistors are being use (NPN vs PNP). Can you help me figure this out?

If it's a normal negative ground pedal, then I know how to wire everything up so that the battery will be disconnected if the power jack is plugged into, and that the pedal will turn off when the input jack has no plug in it. However, if it's positive ground, then I'm not sure how to do it. I would think that I'd still wire the battery clip up to the 9v input like normal, but then I'd have the positive from that go to the ring of the input TRS jack, and then have a lead from the sleeve of the TRS jack go to the input on the board. Would that work? This would be as opposed to what I usually do, which is have the ground from the power input go to the ring of the TRS jack, then have the sleeve connect to the ground of the board.

I appreciate whatever help you can give me!

[Cozybuilder]

Don't know what a "posivite" ground is, but this layout has the volume lug 1 to ground, indicating a negative ground. The Emitter of Q2 (2N5088 = NPN) has 22K to ground and the collector is at +9, indicating negative ground.

[ItsGiusto]

Cool, thanks! So I should basically just wire it up like I'd wire up any other build?

[Cozybuilder]

yes, its negative ground.

[ItsGiusto]

Okay, thanks. I've just never been sure, since I was wondering if maybe the "9v" and "ground" wires may have intended to be flipped, themselves. Meaning that everything which I thought was connected to -9v on the board might actually have been connected to ground, and everything which I thought was connected to ground may have been connected to +9v. Basically, I'm unsure if my thinking about it was correct. Looking at this schematic, for instance, indicates that volume lug1 is connected to ground, but it also shows the + from the power source connecting to ground:
http://generalguitargadgets.com/pdf/ggg_toct_sc.pdf

[idy]

That GGG Octavia schematic definitely shows a positive ground. Note the + attached to the sleeve of the input jack.

[Cozybuilder]

Apples and orangutans. The GGG schematic has NPN in Q1, and PNP in Q2 and Q3, and yes, its positive ground. The Tagboard schematic is negative ground.

[italianguy63]

I found the old "original" schematic, and the original design is positive ground.  I inverted the voltages with a charge-pump inverter on the front end.  MC