#1
Got the idea from a guy over on HC and the schematic from runoffgroove.com. There's a good few tweaks in my circuit, mostly because I just used what parts I had!!
Let me know what you think of the amp, not my playing I know I suck already!!

http://www.youtube.com/watch?v=w_qZHzuaxBU
Last edited by PaoloJM at Jul 20, 2008,
#2


That's amazing, and there's nothing wrong with your playing. You're actually getting a great sound out of it.

I don't suppose you could PM me the schematic address, or tips, what parts etc.? (nutgrove.com seems to be the wrong address).
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#3
Quote by Phill-Rock


That's amazing, and there's nothing wrong with your playing. You're actually getting a great sound out of it.

I don't suppose you could PM me the schematic address, or tips, what parts etc.? (nutgrove.com seems to be the wrong address).


Sorry dude, that should have read runoffgroove.com.
I built a customised version of the little gem.
#5
I wanna make one, but I'd need an extremely dumbed down walkthrough guide.
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Quote by webbtje
Quote by dead-fish
And you're obviously here because you fancy Phill.
Phill is a very attractive guy...

"I'm so tempted to sig that, Phill" - Sig it then

Unless otherwise stated, assume everything I say is in my opinion.
#7
The schematic is really quite simple. I want to make either a Gem or a Ruby as a headphone amp. Paolo, do you happen to know what the output impedance is?
#8
Quote by cedricsmods
The schematic is really quite simple. I want to make either a Gem or a Ruby as a headphone amp. Paolo, do you happen to know what the output impedance is?


I'm no expert but I don't think an op-amp has a fixed impedance. AFAIK, unlike a tube, it's able to deliver any required current to the load with-in a range. In the case of a 386 it's between 4 and 16 ohms I think.
Anyone else know for sure?

Yup the National Opamp data sheet for the LM386 confirms this.
Last edited by PaoloJM at Jul 21, 2008,
#10
Awesome! Now I just need to make one too!

It doesn't say what type of speaker to use on the Ruby. Is it just a 4 Ohm and up?
Last edited by Ox Iceman at Jul 21, 2008,