#1
is there any way i could turn a portable radio into and amplifier, i was thinking if i just disconnected the antenna and had the guitar plug into and input where the radio signal would enter. But i imagine it is more difficult then this...any ideas or explanations on a way to do this?
#2
I tried to do this, actually, figuring I'd do exactly what you're describing. I took it apart and couldn't figure it out. there was too many wires for the radio tuner. So I bought a cheap cassette player and it was incredibly simple. The cassette tape read head had two ground wires and one hot wire. I simply tied the grounds together and soldered them onto one pole of the input jack, and soldered the hot wire to the other. Then, of course, I had to wire up a switch and a battery clip. It wasn't difficult.

It was incredibly gainy, though, and I'm not sure how I'd fix that. Mebbe someone here has more knowledge, though.
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#3
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I tried to do this, actually, figuring I'd do exactly what you're describing. I took it apart and couldn't figure it out. there was too many wires for the radio tuner. So I bought a cheap cassette player and it was incredibly simple. The cassette tape read head had two ground wires and one hot wire. I simply tied the grounds together and soldered them onto one pole of the input jack, and soldered the hot wire to the other. Then, of course, I had to wire up a switch and a battery clip. It wasn't difficult.

It was incredibly gainy, though, and I'm not sure how I'd fix that. Mebbe someone here has more knowledge, though.

hmm i could try that, was this like a small boom box or was it like a Walkman?
#4
it was a walkman-type cassette player. I got it for $5 from the local walgreens. I got one without a radio tuner in it, because I wanted to make sure I got one with a board small enough to fit in an Altoids can.
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#5
another thing you can look into if you can read schematics is the little gem. I took out the guts of a clock radio and made it, its a 1/2 a watt amp.
http://ultimate-guitar.com/forum/showthread.php?t=750713&highlight=1%2F2+watt+amp

you could make it into a headphone amp if u wanted, and the design is insanely small and simple... although the job I did was a bit messy, lol
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#6
Quote by ICANSEEYOU7687
another thing you can look into if you can read schematics is the little gem. I took out the guts of a clock radio and made it, its a 1/2 a watt amp.
http://ultimate-guitar.com/forum/showthread.php?t=750713&highlight=1%2F2+watt+amp

you could make it into a headphone amp if u wanted, and the design is insanely small and simple... although the job I did was a bit messy, lol

i cant read schematics i was thinking about learning just so i could build that earlier today.
#7
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i cant read schematics i was thinking about learning just so i could build that earlier today.

its not that hard to learn and its really useful. there arent a lot of symbols you need to learn.
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#8
I think all you'd have to do to make the cassette player less gainy is replace the trannies eith lower-gain versions. The ones in my cassette player amp ended in "C", which is the highest gain rating. "A" is the lowest.

Anyway, I ended up snapping the PCB in half, and instead of reconnecting the traces with wires, I just smashed it with a hammer...
#9
Wouldn't adding a resistor from signal to ground lower the gain?
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#11
Lol, radios use an inductor and a variable capacitor to specify the frequency to tune into. Unfortunately putting the signal into the attenna will do u no good hahaha. But...that signal is then taken after the capacitor and inductor into an amp and out the speaker. So...you could get rid of the inductor and capacitor and just put ur guitar signal into the amp part and you'd have urself an awful sounding, though audible, guitar amp.
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