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Friday, March 14, 2014

Simulating Pickups & Splitting Signals


SHO Clone & Pickup Sim


Last weekend I decided to make Jack Orman's Pickup Simulator. I've had the parts collected in a little bag for a long, long time. It's a really simple circuit, and one that I really should have built earlier (say back in 2009).

The purpose of the Pickup simulator is to deal with certain pedals that prefer to be fed straight from the guitar and not through the buffer of another pedal (EG: Fuzzface, Big Muff, Octavio).

I didn't have the Mouser 42TL019 transformer on hand, but I did have the Mouser 42TL018 which has a similar enough primary coil value.

The pickup simulator works really well, but that's not the only reason I wanted to make it.

I usually record in stereo with one effected and one dry track. The drawback with this is the guitar had to go into a pedal that had stereo outputs. Which by default, introduces a buffer for each channel.

Since the schematic shows that the transformer can be tapped to obtain two different impedances, I figured it should also be useful in sending the signal to two destinations. Even five, if you don't mind a bit of transmission loss in the secondary coil.

Both of my guesses turned out to be correct.

Splitting the primary gives the best signal, and improved the character of the guitar signal significantly when compared to the buffer split.

One side of the stereo pair goes through effects, the other simply goes into an analogue amp/speaker simulator. It was on the clean side that I noticed the most improvement (Especially on the Bass VI).

This is a no frills tool, but it has the potential to bring some life back into otherwise lifeless sounding effects.

This has been one of my cheapest builds, and its probably the simplest. I wish I had invented it, this should really be available as an off the shelf product.

Until next time.

T.A.P.O.R.


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