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Amps that can drive the HiFiMan HE-6 planar headphones - Page 67

post #991 of 3289

Thanks. beerchug.gif

post #992 of 3289

Duelund Graphite Silver CAST Resistors

 

http://www.hificollective.co.uk/components/duelund_cast_resistors.html

post #993 of 3289
Quote:
Originally Posted by Happy Camper View Post

The size of amp is dependent on the design. The Nelson Pass amps have two different (more really but keeping it simple) designs for different loads. One is a voltage gain device and the other is a current device. The 10 watt F1 is miles more effective than say a regular 100 watt speaker amp with the 6s. I'm going to make a semi experienced guess to say 60-80 watts @ 8 ohms is about the most you'd want to put on them safely. There have been guys trying them on a 500w amp but you have to be very sure of your volume controls for something crazy like that. I recently blew my 6s when I pushed the wrong button on a new DAC and put the full 2v signal to a pair of 125w monoblocks that were set up for auto sense to come on. Living on the edge means sometimes experiencing the other side to know where it is. redface.gif Not recommended for public consumption.

 

Thanks for the insight on these mysterious boxes (Nelson Pass amps). If I lived any closer, I'd get together with you over Pizza while you're waiting.

beerchug.gif

post #994 of 3289
Quote:
Originally Posted by Silent One View Post

 

Thanks for the insight on these mysterious boxes (Nelson Pass amps). If I lived any closer, I'd get together with you over Pizza while you're waiting.

beerchug.gif

 

Hey - don't forget me...  I'll bring the tea....   ha ha ha....

 

beerchug.gif

post #995 of 3289
Quote:
Originally Posted by wuwhere View Post

Duelund Graphite Silver CAST Resistors

 

http://www.hificollective.co.uk/components/duelund_cast_resistors.html


That's even better as they are UK based.

post #996 of 3289
Quote:
Originally Posted by wuwhere View Post

Duelund Graphite Silver CAST Resistors

http://www.hificollective.co.uk/components/duelund_cast_resistors.html

Thank you and thank you to happy camper. Seems worthwhile

Gary
post #997 of 3289
Quote:
Originally Posted by preproman View Post

Quote:
Originally Posted by Silent One View Post

 

Thanks for the insight on these mysterious boxes (Nelson Pass amps). If I lived any closer, I'd get together with you over Pizza while you're waiting.

beerchug.gif

 

Hey - don't forget me...  I'll bring the tea....   ha ha ha....

 

beerchug.gif

 

A Support Group for the ages...I'd love to hang out with y'all some day. Never know when one of us is gonna be amp-less or can-less. Now that I think about that, it's a rather disturbing thought. ph34r.gif The absence of audio? eek.gif

post #998 of 3289

What would be the models for the two types of resistors? There seems to be two judging from the pictures.

 

I'm a fan of DIY, so this feels like a worthwhile mod. Thanks for the suggestion.


Edited by Benjamin6264 - 3/9/13 at 3:01pm
post #999 of 3289
Quote:
Originally Posted by Benjamin6264 View Post

What would be the models for the two types of resistors? There seems to be two judging from the pictures.

 

I'm a fan of DIY, so this feels like a worthwhile mod. Thanks for the suggestion.

 

You can make your own graphite resistors using pencil leads.

 

http://www.troelsgravesen.dk/graphite.htm

http://www.lencoheaven.net/forum/index.php?topic=2887.0

 

post #1000 of 3289

That is really cool! Thank you Wuwhere!

Quote:
Originally Posted by wuwhere View Post

 

You can make your own graphite resistors using pencil leads.

 

http://www.troelsgravesen.dk/graphite.htm

http://www.lencoheaven.net/forum/index.php?topic=2887.0

 

post #1001 of 3289

The thing though is you would not know the power handling and the tolerance of a diy graphite resistor. However, you can compare them with a non-graphite and hear if there is a difference.

post #1002 of 3289

What is the resistance and power rating for the two types of resistors in the HE adapter? What codes would that be for the Duelunds? Thank you!

post #1003 of 3289
Quote:
Originally Posted by Benjamin6264 View Post

What is the resistance and power rating for the two types of resistors in the HE adapter? What codes would that be for the Duelunds? Thank you!

 

I know the 25 ohm in series is 1/4 watt, the 10 ohm in parallel is probably 10 watts.

You can also look at the picture and figure out the values from the resistance stripe codes.


Edited by wuwhere - 3/9/13 at 7:30pm
post #1004 of 3289

BTW you can also use the Duelund non-CAST Graphite Silver Resistors for half the price of the CAST.

 

http://www.hificollective.co.uk/components/duelund_resistors.html

post #1005 of 3289

Also, I believe that the small 25 ohm 1/4 watt resistor in series was put in there to protect the HE-6 from over-current. If you calculate the total impedance of the 10 ohm resistor in parallel with the 50 ohm HE-6 and in series with the 25 ohm resistor, its still about 8 ohms.

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