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Earphones: 16 Ohm v/s 32 ohm... Any difference? - Page 2

post #16 of 18
6/6/08 at 11:25pm
Quote:
Originally Posted by MechE View Post
Going back to electrical talk, with two headphones having exactly the same sensitivity given the same voltage electrical signal, but one is 16 ohm and the other is 32 ohm and I=E/R and P=EI, so the power is inversely proprotional to impedance given the same voltage..
but this assumption is not necessarily valid.

It is quite possible that the hypothetical high impedance headphone winds up more sensative than the low impedance one!
Quote:
If you mate a semi engine with a Ferrari drive train, the engine still maxes out at 2,500RPM with a boat load of torque to spare, but you won't be delivering 500hp
The HP delivered by a given engine is irrespective of the drivetrain. Whether mounted in an engine dyno, or on any drivetrain in the world the HP output of your engine is the same as long as the engine can reach the same rotational speed. (ignoring friction and similar losses, which only have an effect on MEASURED output at the wheels not what the engine makes.)

You would probably be correct to say that the engine wont move the car particularly far though. It would more than likely destroy the clutch and gears of the immaginary Ferrari drive train which are not likely designed to handle this much torque. The likely scenario is that you are running the transmission on the hopes that the safety factors hold up...
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post #17 of 18
6/6/08 at 11:51pm
wow alright. I have a denon D5000 which is a low impedance headphone as I understand.

My amp has two inputs for the phones a 0 ohm and 120 ohm, which would my Denons benefit the most from? Right now I have them in 0.
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post #18 of 18
6/7/08 at 12:19am
Quote:
Originally Posted by nikongod View Post
The HP delivered by a given engine is irrespective of the drivetrain. Whether mounted in an engine dyno, or on any drivetrain in the world the HP output of your engine is the same as long as the engine can reach the same rotational speed. (ignoring friction and similar losses, which only have an effect on MEASURED output at the wheels not what the engine makes.)
That's not true. The HP delivered has EVERYTHING to do with it. You really can't spin a semi engine much past 2,500RPM(redline), but engine still have plenty of torque.

The amount of torque applied should use all of engine's available torque while it's at the maximum RPM. If the gearing is too low, you can't get anymore power, because the engine is not allowed to rev any faster, and if it's too high, there isn't enough torque to reach the maximum RPM.
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