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what are resistor adaptors??

post #1 of 3
11/26/11 at 4:54am
Thread Starter 

http://www.ebay.com.au/itm/Etymotic-ER4P-ER4S-3-5MM-plug-resistor-adaptor-/270837009344?pt=LH_DefaultDomain_0&hash=item3f0f24cbc0

 

kiteki mentions that it makes her (probably, or his) EX600 sound much nicer, and whats the difference between all the ohms?? 

 

Copied from the ebay page:

 

Other impedance can be selected (50, 100, 120, 240, 300ohm)

***please tell me when you order for different impedance beside 75ohm*** 
 
 
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post #2 of 3
11/26/11 at 6:26am
Quote:
Originally Posted by sulkoudai View Post

http://www.ebay.com.au/itm/Etymotic-ER4P-ER4S-3-5MM-plug-resistor-adaptor-/270837009344?pt=LH_DefaultDomain_0&hash=item3f0f24cbc0

 

kiteki mentions that it makes her (probably, or his) EX600 sound much nicer, and whats the difference between all the ohms?? 

 

Copied from the ebay page:

 

Other impedance can be selected (50, 100, 120, 240, 300ohm)

***please tell me when you order for different impedance beside 75ohm*** 
 
 



Resistor adaptors are something you don't want for a headphone.

 

I can't see why adding more resistance will make your headphones sound better.

But without knowing what's inside the adaptor I can't accurately comment on this.

If I assume that the 75 ohms is in parallel with the headphones then that is bad because you are drawing more power from the headphone amp which does nothing except needlessly stress the headphone amplifier.

If I assume that the 75 ohms is in series with the headphones then you are decreasing the damping factor (bad) and decreasing the efficiency of the headphone amplifier (also bad).

 

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post #3 of 3
11/26/11 at 1:18pm
Thread Starter 
Quote:
Originally Posted by Chris J View Post



Resistor adaptors are something you don't want for a headphone.

 

I can't see why adding more resistance will make your headphones sound better.

But without knowing what's inside the adaptor I can't accurately comment on this.

If I assume that the 75 ohms is in parallel with the headphones then that is bad because you are drawing more power from the headphone amp which does nothing except needlessly stress the headphone amplifier.

If I assume that the 75 ohms is in series with the headphones then you are decreasing the damping factor (bad) and decreasing the efficiency of the headphone amplifier (also bad).

 

oh ok, thanks
 

 

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