Hi audioguru!
Thanks man, this was my first attempt to build a board using the computer.
Thank you for pointing that out, i will work the plot out latter and make the ajustments, the distortion was measured at the max level (1.2V RMS).
When i've came out with the final design of this circuit i was always considering the final level output to keep it at a secure level of decibels to prevent
**broken link removed** on my self and other people that want to try this circuit out. That is why the circuit is not at his full potential of delivering lots of decibels out, so i've decided to play safe and be safe about this issue and cuted out most of what the circuit is capable of.
To listen music with a headphone in an
**broken link removed** is more like having a gun at your head, i know that over the years we have a
natural hearing loss, but why accelerate this process?
I have some friends with hearing problems, they were thouse "let's rock babe" type of guys, you know, wear a set of headphones and punch their heads with lots and lots of decibels (Guns, Metallica and so on) all day long and i didn't want to know some one that have give my circuit a shot and punch their heads with lots of decibels, i really don't want to be responsible for that.
Believe me, with my 40 ohm headphone set, this circuit can deliver enought power to it, but i still think that is too much loud for me at max level. I know that people that uses a headphone with 100 ohm or more impedance the circuit have to be changed (remove R7/8/12/13 and maybe R4/9 also).
The schematic was fixed, thank you!
I will upload a new version soon.
About the transformer, here in Brazil it's very hard to find components, to me also a 50mA or 100mA would be fine, but i didn't find any
good around, but any way, thank you for this!
Some friends of mine that have builded this circuit, they told me that the correct name should not be "Super Headbanger" but subwoofer headphone amplifier.
I also have a question....
Some friends asked me to make this circuit portable (small board, batery based) and i will try to find some components to build the circuit with a
**broken link removed** and make some tests with it to see how much batery i can save with and with out the step down converter.
The question is about the coil, can i use thouse micro (dont know the name) ones?
They are small like a capacitor, blue and with the same value.
Thanks!