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  1. BetaTripp

    Adding filtered signals from the same source

    Hi, I've decided to try and design a simple tone control circuit for a guitar amp, i'v gone with 3 filters in parallel (high pass, low pass and band pass for high mid and low ranges) but im not sure how to add the signals afterwards to put them into a pre-amp... ill attach the schematic. i am...
  2. BetaTripp

    Lots of transistors. What do they all do! (schematic)

    Hi, I'v got a bit of a background in electronics but haven't ever really designed anything myself (in a circuitry sense). The schematic I have attatched is one of a guitar amplifier, could somebody tell me what all of these transistors do?? I see that theres a differential amp on the left and...
  3. BetaTripp

    Differential amplifiers - why amplify the difference?

    Hi all, A bit of a rookie question maybe but what is a differential amplifier used for and what is the point in amplifying the difference between the two inputs? If you are feeding back the output of the amp to the negative input wouldnt you just end up with the input minus the output which...
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