Sound is garbled hard to under stand the words.
Kind of matches most of your threads, doesn't it?
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Sound is garbled hard to under stand the words.
The LM386 must be the most misused chip there is?.
These circuits get worse! - I'll repeat - an LM386 is a POWER amplifier, not an opamp, it shouldn't be used as a preamp.
The LM386 must be the most misused chip there is?.
Where were you 40 years ago when I built this?
There were plenty of opamps back then, even the wonderful 741 is a better preamp than an LM386 - although AG has a serious vendetta against them.
I tried an experiment & swapped the chinese LM386 m-53 with a 40 year old Radio Shack LM386 n-1 there is no difference in the sound. All circuits I find including data sheet says 10K variable resistor.
I know the LM386 n-1 from radio shack work excellent in the circuit I built 40 years ago. This circuit might not be correct and maybe it could be made better but it works amazing well. The big 8 inch diameter speaker from a 50 year old TV acts like a dish if I aim it a boat on the lake that is
**broken link removed**
Now we know where he sticks the earphones! Where the sun never shines.
3) Need to be able to hear a pin drop from 1/2 mile.
Look at this circuit. This used a parabolic dish with the mic.
The thing I built 50 years ago used a speaker instead of a dish, it worked good the trick was to slowly turn up the volume until it works. I think anything I build with a mic will need a dish.
https://www.nutsvolts.com/magazine/article/the_big_ear