More questions:
From: "Stephan Gipp"
Have a look at www.mouser.com and look for 'audio transformer'. And don't
be surprised about some of the prices :-)
Thanks, I see them. But, I'm not sure how to choose one for my application;
_HELP_?:
For Mouser's audio transformer products, they have spec sheets where they
have the "impedance (ohms)" rated on both the primary and the secondary
windings.
If my headphones are 8 ohms and my MP3 player is expecting headphones in the
40-100 ohm range, is it as simple as buying an audio transformer with
reasonably wide-range frequency response, and 8 ohms on one winding, and
40-100 ohms on the other winding?
Or is there more to it than that? (I'm a total beginner in electronics)
For instance, I don't know if maybe I need to calculate the RATIO of
impedances I want, like 8:40 -- 1:5, and get a transformer with 5 times as
many windings on the secondary coil as the primary, or some other such
intermediate calculation...
And once I buy two transformers (one per channel), is it as simple as (for
each channel) connecting the 8-ohm headphone driver to the "common" and
"hot" leads for whichever winding is rated 8 ohms, and the 1/8" headphone
jack's "common" and "hot" leads to the other winding? Or, is there maybe
some reason I'm supposed to connect it in the OPPOSITE way?
I'd hate to end up reducing, rather than increasing, the "apparent
impedance" of my headphones by 5x, to appear as less than 2 ohms, and fry
the amp on an expensive MP3 player...
Thanks,
- Goodmusic