rasterburn
Member
hello, a friend and I are planning on building a small guitar amp and need some minor instruction, most of it we have figured out cause the schematic for it is drawn out and publicly accessible but we plan to make some minor adjustments, some features of the amplifier we plan to remove and replace with other features, the most notable being the built in overdrive, we plan to remove that and replace it with an effects loop. For me this seems to be an easy task, I already know how to remove the overdrive from the board, that is simple, and I have a vague idea on how to install the effects loop, more or less I am just looking for either a confirmation that my idea is correct or an explanation where i screwed up in my idea....
So for starts I have 3 1/4" mono switched jacks laying around, 2 of which i will be using for the effects loop, on the bottom of these jacks it has 3 pins labeled 1, 2, and 4 according to my test meter pins 2 and 4 are connected while nothing is plugged into the jack while pin 1 is "sleeve" leaving pin 2 as "tip". If something is plugged into the jack then pins 2 and 4 become disconnected.
My idea for this effects loop looks something like this:
From what i can tell, a person could plug a tuner into the send or return without effecting the circuit between the instrument and the amp but also enable the use of an array of effects pedals without unplugging their instrument from the amp.
So for starts I have 3 1/4" mono switched jacks laying around, 2 of which i will be using for the effects loop, on the bottom of these jacks it has 3 pins labeled 1, 2, and 4 according to my test meter pins 2 and 4 are connected while nothing is plugged into the jack while pin 1 is "sleeve" leaving pin 2 as "tip". If something is plugged into the jack then pins 2 and 4 become disconnected.
My idea for this effects loop looks something like this:
Code:
inst. jack effect send effect return pre-amp
tip ------------------ 2 --------------------- 4
4 --------------------- 2 ----------------- signal
sleeve --------------- 1 --------------------- 1 ----------------- ground
From what i can tell, a person could plug a tuner into the send or return without effecting the circuit between the instrument and the amp but also enable the use of an array of effects pedals without unplugging their instrument from the amp.
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