I've finally gotten around to posting the googlewhack drawing I finished a couple of weeks ago - for details about this series of drawings, please see my earlier post. Anyway, this one is titled vishnu hayrides. The outer edges are a bit wobbly in the photo - I photographed it where it has been tacked up to the wall in my workroom for several weeks and the recent humidity (it's been a wet weekend in Sav) has warped the vellum a bit. It should be fine once it get it in the flat drawers with the AC on.
Overall I think I'm happy with it. It started out as vertical with four rows of broken text but it just wasn't working & I couldn't get the right balance of letters/open space (ie. figure/ground). I cut it up & went for a horizontal orientation instead and I think it works better. We'll see - I'll put it away and not look at it for awhile, then hopefully see it with fresh eyes.
Sunday, April 25, 2010
Cigar Box Megaphone Amp
So my latest diy project was to build another megaphone guitar amp, this time using a 10 watt megaphone that I picked up at Harbor Freight (they were on sale for $5.99 so I picked up two, one of which I trashed in a fit of impromptu circuit-bending... but that's another story). I decided to use an old square cigar box for the housing. Here's some pics of work in progress:
Disassembled megaphone with cigar box.
Rather than using four "C" batteries for juice I attached a 9v power supply.
tricked out box interior with center panel for holding the speaker
Front of box with pilot hole drilled for cutting circular opening for speaker.
I had to first replace the front panel (which was cracked) with a piece salvaged from another old cigar box.
Inside of box with attached speaker (which I spray painted black), battery, and 1/4" input jack. The back of the speaker is bolted to the center panel, with a piece of wire screening (also spray painted black) glued to the inside front panel. My original plan was to somehow mount the circuit boards with the on/off button and volume control so that they poked out either the top of the box, or the back - easier said than done...
finished box - front
finished box - back
I stuffed the circuit boards back into their original housing & cut a hole in the back of the box, then slathered with airplane glue to hold in place - not pretty, but it works (nice buzz from the glue, though).
input line on the right, output line on the left.
running a line out to another amp/speaker creates tons of fuzz and distortion
interior of finished box - battery is held in place with velcro so it doesn't rattle around.
side panel is secured in place with two screws.
Rather than using four "C" batteries for juice I attached a 9v power supply.
tricked out box interior with center panel for holding the speaker
Front of box with pilot hole drilled for cutting circular opening for speaker.
I had to first replace the front panel (which was cracked) with a piece salvaged from another old cigar box.
Inside of box with attached speaker (which I spray painted black), battery, and 1/4" input jack. The back of the speaker is bolted to the center panel, with a piece of wire screening (also spray painted black) glued to the inside front panel. My original plan was to somehow mount the circuit boards with the on/off button and volume control so that they poked out either the top of the box, or the back - easier said than done...
finished box - front
finished box - back
I stuffed the circuit boards back into their original housing & cut a hole in the back of the box, then slathered with airplane glue to hold in place - not pretty, but it works (nice buzz from the glue, though).
input line on the right, output line on the left.
running a line out to another amp/speaker creates tons of fuzz and distortion
interior of finished box - battery is held in place with velcro so it doesn't rattle around.
side panel is secured in place with two screws.
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