Welcome to my Archtop Guitar Project Blog

The Archtop, or "Jazz Box", is a unique style of guitar. It has a complex design, and a sound that one might say can only come from such a design. Having never built a guitar of any kind before (unless you consider a ukulele to be a guitar) I have decided to jump right in up to the neck and start with the archtop. When I tell this to people, the normal response is something like, "have you ever built a guitar before?" or "so, you have a pretty good idea how to do this, right?". My usual reply is, "nope". I do, however, make a point to assure them that I have built many kinds of things, using many different materials, and I consider all constructions to have a logical and understandable process.

So, if you're interested in "newbe" projects like this, then grab a fresh cup of coffee or tea and follow along. The earliest post shows the design I'm going for.

**UPDATE TO INTRODUCTORY TEXT** You will see as the posts progress from earliest to newest that a few modifications and compromises have been made. As with all learning experiences, this project has allowed me to work out any problems with a design that have not been foreseen on paper. I also welcome any input from readers/followers who have some experience in either building or playing guitars that will point out potential problems.

Friday, July 6, 2012

Passive ... Agressive Pickups?

There are two basic types of pickup; passive and active. Passive pickups work through simple magnetic properties, sending impulses through wiring going into the amplifier. Active pickups are powered (usually by a battery). I am using the more common passive pickup, specifically DiMarzio DP 103 humbuckers. The humbucker is named for the fact that it's configuration is designed to "buck the hum", or cancel the hum that can happen with a single coil pickup. They are typically wired in series, so each of the two coils of the humbucker is linked like sausages in the wiring. This is not always so, and many different effects can be obtained by wiring in different ways. However, I am going for a standard wiring of two pickups with a single volume and tone, with a three way switch. The switch allowing to select neck, bridge, or both positions.

OK, so the pickups are passive. But the instructions are passive aggressive. The wiring schematic cryptically shows only two wires from each pickup. As you can see above, there are five wires sticking out the end of this thing. Well, after a bit of reading and head scratching, I realized that the black and white wires get tied together and capped (at least with this brand, you will have to be sure the wiring is what you expect before going ahead with the tying of wires), essentially eliminating two wires. And it would seem the green and the bare ground are wired as though they were one wire. So, in effect, we do effectively have only two wires. That's just paranormal stuff to someone who hasn't really done any electronics to speak of.

Now that I have that figured out, it's time to get into it. I spent some time last weekend when I was home doing most of the wiring. I hope to get the remainder done this weekend, and then I can start the assembly of this guitar. Yay.

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