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| is unusual. The pickups are switched by a standard 5-position pickup selector. The neck and bridge have a tone control, and the middle pickup has its own tone control. The ouput of the pickups goes directly into a unity gain (no boost) preamp powered by a 9-volt battery. The preamp protects the guitar signal against high end loss due to cable capacitance by lowering the output impedance. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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and how they work:SCHEMATIC . . The model number is JG1. (or now a JG-2) Since the loop is wired pre- volume, the effects are always seeing the same full output from the pickups. When your signal from your guitar is not going up and down with volume you know right where your effects levels are going to be. Most importantly this allows you to shape the tone of your effected signal with the tone controls of your guitar. When you daisy chain stomp boxes in between your guitar and your amp you are sucking a lot of tone away and when you kick in any effect it takes over your signal and you have no control over it. Try turning on a distortion pedal and switching your pickup selectors or turning your tone knobs, you see very little change in the sound. With the effects loop and unity gain buffer you have 5 different distortion tones and you can roll the tone off to get real cool horn like sounds. In this way, Garcia was seamlessly painting with an incredible number of varying tones that were controllable right from the guitar and one control foot switch. |
