Thursday, November 11, 2010

Quite Simple Active Guitar Wiring - for Clean Signal Transport

Today I would like to present another guitar wiring diagram with the buffer, that I wrote about in some previous post.
It's very simple. The wiring is based on one potentiometer, one tone switch with two capacitors and the buffer. It's designed for those of you, who are looking for clean, linear guitar signal transport, with no uncontrolled affects from parts of the wiring. It will not give you a lot of on-board tone shaping functions, but will be perfect if you prefer to use pedals and amps equalizers for that purposes, or if you just wan't to hear more from the wood, strings and pickups, without big impact from potentionmeters and capacitors.

As you can see on the diagram, the signal goes right from the pickup (by the pickup selector switch) to the buffer. After this stage, it goes from the buffer output to the resistor, than to the volume pot and to the tone switch. After passing the volume pot, the guitar signal will go right to the jack socket.

When the tone switch will be in the centre position, all tone shaping functions are „off”. By moving the toggle up or down, you will chose one of two capacitors, what will make a signal low-pass filter, together with the 1k6 resistor.
By choosing the 22nF cap, you will make a filter, which will start cutting off  signal portions above ca 4500Hz (frequency cut off level). The 25nF cap will make similar filtering above ca 4000Hz, so it will cut off a little bit more treble. Both tone filters are working only on really high frequencies, so it's a kind of contour control - it will make your guitar tone only a little bit smoother. It's an useful and easy to use tool.

I used the stereo jack socket, to make a special kind of power circuit. The battery will be fully connected only when the jack plug will be in the socket.

The wiring - like I said on the beginning – is not designed for many on-board tone control functions - it's made for clean, linear signal transport. It's quite universal, so will work nicely with many types o pickups and guitars.

For more information about wirings based on buffers, you can check out some of my previous posts: