treble booster question

[harrisxr650]

Hi guys. I'm a simple diy'er hobbyist  so go easy on me. My knowledge about building pedals aren't the best . A friend of mine asked to build for him a treble booster to emulate as much possible Rory Gallagher's tone and  maybe Brian may's. Now i'm getting a bit confused as a have a bunch of schematics for a rangemaster (for example) and Brian May's treble booster all of them having very small changes between them regarding materials (4n7-6n8 input cap and and a resistor from 6k8- 10k). I know its a bit difficult to answer without having a schematic and i will be delighted to send them in private if someone want to help. but my main question is :would i benefit much building a positive ground TB or it doesnt worth it? would make big difference with a pnp tran rather than npn? BTW i can make a +9vdc to - 9vdc voltage inverter to run it with usuall psu. Sould i build a rangemaster clone or should i go for the Cornish TB? I think i do have somewhere around a couple of bc182 Cornish TB seems to have and a couple oc44 as well as 2n5088, 2n2907a. which one is best suitable?
Again thanks for looking at this and sorry for the noob questions.
Harris.

[midwayfair]

NPN is easier to power.

Those resistors are different because they affect the biasing.

The input cap is different because the original effect used a 5nF cap, which is tough to get.

Read this:
http://www.geofex.com/article_folders/rangemaster/drm.htm

[harrisxr650]

thanks midwayfair. very interesting article, will start reading right away