Now there is an Si fuzz face type circuit (axis face III) that sounds very similar to a Ge version is it possible to get a Si rangemaster type device that sounds as good as a Ge one? I have built several treble boosters but the one I always use live is the Ge version as it sounds so much better despite the problems with temperature. One was reviewed in the UKs 'guitar magazine' last year but I can't find the article now. The reviewer said that the warm tones of a Ge device were present, all of the Si boosters I have built have had a great sound and can really lift a solo from the rest of the band in a live context but have the disadvantage of being 'cold'. They all have their uses, one that I really like is the 'sparkle boost' which can also overdrive giving some really good sounds but they just can't replace my rangemaster clone.
What I really want is something that will not change it's sound no matter what the temperature is as I play both indoors and outdoors, while being stable no matter how long it is left switched on. I need it to give me that rich powerful boost I use for solos and some clean(ish) sections with reliability every time.
Check out the Brian May Treble Booster project at Tonepad. It's supposed to be a very convincing Silicon version of the Rangemaster that may be just right:http://www.tonepad.com/project.asp?id=40Phillip
Thanks for the reply. I built a Brian James Treble Booster (I think it has a BC182L transistor) and it does come close but it just hasn't got the richness of the Rangemaster clone. It does increase sustain and it has a nice smooth sound that I really like but it is just missing that something, and it isn't MOJO as the rest of the band notice the difference when I change, and for a load of punks playing high distortion music that must mean something.
I might try changing some of the resistors for trim pots and see if I can make any difference as the Brian May TB is a simple stripboard build and I bought some spare transistors at the time. I might also try different types of capacitor which will involve changing the layout. I can't socket the transistor as the 'L' version has a different pinout to most types and can't just be reversed as you can with most components of this type.
Alternatively we need a temperature stable Ge transistor!
That should keep me busy for a while!
Is there an ideal gain range for the Ge trasistor in the rangemaster like there is for the fuzz face, or will anything do?
I don't know the sound of the rangemaster with Si transistor but I have built a Ge rangemaster trying various ac128 and ac128k NOS with big results. I have used three values of initial condenser: 0,005uF(treble), 0,03uF(mid very good), 0,1uF (bass).Good Range to everybody.
Gains between 65 and 90 are good ones especialy if you deside to use it as distortion unit too. This will add a bit more compresion to the sound. Input cap in this case should be 4,7nF to 6,8 nF.Experiment!Gain about 45 is enough just for treble boost. It's just my opinion!