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NAD 7140 and 600ohm headphones
- Thread starter Deafdog68
- Start date
nopiano
Well-known member
- Feb 15, 2009
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Eventually I found a manual for it. The spec includes this:-
Phones: >10V into 600 ohms.
It might not quite blow your head off but it surely will be fine?!
Phones: >10V into 600 ohms.
It might not quite blow your head off but it surely will be fine?!
...you'll be pleased to know 😆
Jasonovich
Well-known member
- Jul 28, 2022
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thanks nopiano... i am totally oblivious to all the technical stuff re hifi but as long as they will produce enough volume to listen to that will be great... 🙂
Vincent Kars
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- Mar 6, 2021
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Manual says output impedance of the phones is 220 Ohm. A damping ratio of 8 is recommended as a bare minimum. So you need a 1760 Ohm headphone impedance?
Wonder if this manual is correct and if it is, you better buy a decent headphone amp (impedance well below 1 Ohm)
Manual also says >500 mV into 8 Ohm. If the impedance drops, the voltage drops too????
Wonder if this manual is correct and if it is, you better buy a decent headphone amp (impedance well below 1 Ohm)
nopiano
Well-known member
- Feb 15, 2009
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Well, I did check the 600 ohm requirement, and found 8volts was a suggested minimum. Hence I concluded 10volts should be fine.
I didn’t look at the rest tbh, as I always find it confusing how volts and watts are used almost at random in headphone specs.
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