Hi guys,
I run on my desktop a modified Creative X-fi Music soundcard, you know, the usual stuff: all LM4562, Panasonic caps, Silmic II filtering cap, shielding etc.
That it gone just fine, but just looking to my Creative Inspire T6100 5.1 system it looks like it has... its own Op-Amps. Damn JRC 4556 and 4558 again! I don't get it, what's the point of amplify an already soundcard preamplified signal. Why it's not fed directly to the final amplifier IC; it's this standard?
Thank you.
I run on my desktop a modified Creative X-fi Music soundcard, you know, the usual stuff: all LM4562, Panasonic caps, Silmic II filtering cap, shielding etc.
That it gone just fine, but just looking to my Creative Inspire T6100 5.1 system it looks like it has... its own Op-Amps. Damn JRC 4556 and 4558 again! I don't get it, what's the point of amplify an already soundcard preamplified signal. Why it's not fed directly to the final amplifier IC; it's this standard?
Thank you.
I understand. I thought all processing is done by the soundcard, the 5.1 only has one control - subwoofer volume. Guess I was wrong - now I have to replace these 4556s too. Oh boy.
Thanks JonSnell.
Thanks JonSnell.
You threw fancy upgrade parts at your soundcard to run a 55€ (in 2007) consumer crap class 5.1 sound system?
*facepalm*
I really don't think the opamps inside this thing are going to be the big bottleneck (unlike, say, the cheap speaker drivers, 1-polar-electrolytic "crossover" or even the power amp) - how many are there? It would be interesting what they're used for though, maybe they did implement a crossover.
While I would expect plenty of 4558s in equipment like this (they're cheap and don't need much current, though output driving capabilities are pathetic as well), the 4556 is a headphone driver. Ah, the T6100 does have a headphone output, so that's probably what that is used for.
*facepalm*
I really don't think the opamps inside this thing are going to be the big bottleneck (unlike, say, the cheap speaker drivers, 1-polar-electrolytic "crossover" or even the power amp) - how many are there? It would be interesting what they're used for though, maybe they did implement a crossover.
While I would expect plenty of 4558s in equipment like this (they're cheap and don't need much current, though output driving capabilities are pathetic as well), the 4556 is a headphone driver. Ah, the T6100 does have a headphone output, so that's probably what that is used for.
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