Step 3: Remove Old Driver - Replace with new speaker

Remove the old megaphone driver - while it's suitable for projecting sound a log distance, it's not very nice for anything more than scratchy vocals yelling at misbehaving schoolchildren.

Replace with another speaker - I sourced mine from a derelict boom box.

Check that you can still play music - this is also a good time to mock up mounting locations.
Oooo... this is SO CLOSE to fulfilling a silly little dream... I want to pipe Barney & Mr Rogers' songs thru it as a poorman's karma, so to speak, thanking other drivers for sharing their music with me... will try to use cigarette lighter 4 power, not sure how to pipe it thru loud enuf to rattle their teeth like they do mine, but it'll be fun!!!
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If you put a baffle behind that speaker, you can double the volume and get a richer tone. I bought ready made from a car audio store, but you can just use tupperware.
In an open air environment, I'm not too worried about the richness of tone :) Plus, then only one ear is going to get sound ;) With the back end open, you get some form of audio coming out the rear.<br> <br> Check out my profile, one of the smaller images is a later bike stereo build using 2 speakers on either side inside of an enclosure.
Hey, great 'able! Would it be possible to make a stereo version of this by&nbsp;making two&nbsp;and using phono jacks instead of a&nbsp;microphone jack and link them up?
Sweet!<br /> Brings back such good memories!<br /> <br /> Stereo version in the near future?<br />
Oh hells yes :p I've got a 400W amp stereo mount for the bike :p Much better than this first version, about 390 watts better :p<br /> <br /> Eventually, I'll get around to sorting through pictures and documenting :p<br />
SCHWEEEEEEEEEET!<br /> <br /> Man... that looks <strong>so</strong> badass.&nbsp; Hooked up a generator for the battery yet?<br />
No :( It runs on a PbA battery and the amp is too big (heavy).... Somewhere down the line, I want to optimize for weight (which will likely mean efficiency too). Then I'll throw in some generator magic (that bike even has a mount for a side roller headlight generator) :p<br /> <br /> How'd the awesome grant project turn out? Can cotton candy be launched great distances yet?<br />
Awesome man, I can't wait :)<br /> <br /> It's coming!&nbsp; I'm down to figuring out how the electronics have decided to destroy themselves over the winter, and turning a venturi tube out of teflon.&nbsp; I really really want to be done by Maker Faire Boston, which is in April!<br /> <br /> Pics and more to come when I'm done :)<br />
u think maybe u could make a version with the amps closer to the front, so as too make it easier to hear your own music? and possibly one with a mic hookup so i can curse out retarded drivers and other cyclists who try and run me over( im not that fast a cyclist cuz im bigger and do it for excercize).
I'm Jealous of your Recumbent ! <br /> <br /> I might have to make my own<br />
Cool 'ible!&nbsp;&nbsp;&nbsp;&nbsp;Your side note at end of intro completely ROCKS!!!

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Bio: Engineer making renewable energy products for African entrepreneurs.
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