ashmedai
100+ Head-Fier
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Quote:
Okay. I'd still love to see stuff like a power-impedance graph etc that quantitatively speaks to how well they can do it. It's not really a can they / can't they problem. Unless it's so far into "can't they" that you can't get any useful sound at all, which we already knew isn't the case.
Or could you be more explicit/detailed than "yes they can"?
To try to get into some numbers; the Vpp on an M^3 (for a random easy-to-find example) is 24V, while the highest you're getting from that supplemental molex connector is 12V. Current should be less of a problem since there is usually 10-12A or more to play with (noting that you need to avoid using a large fraction of it to avoid screwing with disk drives etc). Also you lose some because the card probably needs to filter the power it's getting to some degree. If I'm remembering my electronics right, things like the K701 are more picky about current while others like the HD650 are more picky about voltage (in each case noting that not enough of the other will still suck). So we have abundant current but kinda meh voltage. Power, we could install an arbitrarily higher capacity power supply, but from a marketing standpoint you probably should assume you're working with the leftovers after everything else gets its pickings which may or may not impose further limits.
As you can see, I'm a bit skeptical - have explained my reasons for taking a skeptical view of blanket claims that "yes it works" - and am looking for some more specific information to back it up. If you're just going off what sounds good to you, great, and I'm happy for you, but I still hope someone with the specific knowledge and the electronics experience can help clarify this one way or another. I have just enough to have reason to be very skeptical, not enough to nail down the answer.
Originally Posted by Dionysus /img/forum/go_quote.gif Seriously as an owner of this setup I know for a fact that the STX can drive the Senn HD650 it is quite annoying to read. |
Okay. I'd still love to see stuff like a power-impedance graph etc that quantitatively speaks to how well they can do it. It's not really a can they / can't they problem. Unless it's so far into "can't they" that you can't get any useful sound at all, which we already knew isn't the case.
Or could you be more explicit/detailed than "yes they can"?
To try to get into some numbers; the Vpp on an M^3 (for a random easy-to-find example) is 24V, while the highest you're getting from that supplemental molex connector is 12V. Current should be less of a problem since there is usually 10-12A or more to play with (noting that you need to avoid using a large fraction of it to avoid screwing with disk drives etc). Also you lose some because the card probably needs to filter the power it's getting to some degree. If I'm remembering my electronics right, things like the K701 are more picky about current while others like the HD650 are more picky about voltage (in each case noting that not enough of the other will still suck). So we have abundant current but kinda meh voltage. Power, we could install an arbitrarily higher capacity power supply, but from a marketing standpoint you probably should assume you're working with the leftovers after everything else gets its pickings which may or may not impose further limits.
As you can see, I'm a bit skeptical - have explained my reasons for taking a skeptical view of blanket claims that "yes it works" - and am looking for some more specific information to back it up. If you're just going off what sounds good to you, great, and I'm happy for you, but I still hope someone with the specific knowledge and the electronics experience can help clarify this one way or another. I have just enough to have reason to be very skeptical, not enough to nail down the answer.