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G-protection insanity - Page 2

post #16 of 17
thanks!

wow, putting black gate's in a portable... those caps probably cost as much as the rest of the electronics combined! luckily i have those parts already, though i don't have the time to try it out right now...

just skimming through the datasheet, it looks like you can change a few pins and get it to be DC-coupled, getting rid of the output cap entirely... Might be worth a try...

The gain mod looks interesting, though the current level is enough for me... But i think the circuity could use MUCH better bypassing...

Quote:
P.S. Is it just me, or does the E990 look like a messy engineering job?
definately

It appears identical to my old (c.1996) sony CDP, the circuity looks identical, the only difference is a thinner optical block and the thinner batteries...and i still don't see how a bunch of professional engineers could release a product with such serious problems with HF noise pickup...
post #17 of 17
Quote:
Originally posted by thomas
...and i still don't see how a bunch of professional engineers could release a product with such serious problems with HF noise pickup...
Hee hee hee. I remember Panasonic's first MD player (SJ-MJ5/7) was totally booed for that reason. Very obvious hiss from phones out; 10+10mW output didn't matter. And I was one who bought it based on pleasant past experiences with the marque... *bops self*

When I was getting the mod info together, I came across this one: someone says, put a 300-ohm resistor somewhere between the phones jack and your headphones, that seems to block out the noise. Hrmmm.
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