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HifiMAN HE-6 Planar Magnetic Headphone - Page 449

post #6721 of 14887
Quote:
Originally Posted by preproman View Post

 

 

Wait a minute..  Now you got me interested in these tube amps?  

 

Are they very expensive?   What would something like the REXPower Amplifier cost?  Also anything below that as well.

 

The neat thing about tube amps is being able to roll the tubes. The bad thing is it gets expensive.

post #6722 of 14887
Quote:
Originally Posted by preproman View Post

 

 

Wait a minute..  Now you got me interested in these tube amps?  

 

Are they very expensive?   What would something like the REXPower Amplifier cost?  Also anything below that as well.

 

The REX is BAT's top of the line tubed power amp weighing in at 100 pounds and delivering a whopping 80 watts p.c. It is priced at $15,000.00.

 

http://www.musicdirect.com/c-574-power-amps.aspx?sortfield=Popularity&sortdirection=DESC&perpage=24&BrandFilterID=74& This site has some of the less powerful and more affordable BAT models including the one I have, the VK-55SE.

 

Shop around, with the economy as it is, a 20% discount from retail is a fair price for both buyer and dealer. Another brand of tube amps that are top notch is EAR/Yoshino, made in the UK and yes, they are more expensive. Then you can get into the boutique lines like Leben and Shindo, fabulous Japanese gear, but forget about a discount and the yen/dollar exchange rate really sucks if you are an American.

 

I have always listened to headphones via a tubed amp since the synergy is unparalleled but most top quality tubed headphone amps don't have the necessary power and headroom to properly drive orthos. This is why I'm in the market for a hybrid to drive my LCD-3's. Dr. Cavalli seems to have come up with a winner with his Liquid Fire.

 

Sorry for deviating from thread topic.

post #6723 of 14887
post #6724 of 14887
The BAT is fine to drive them but as I understand it, the resistors are for protecting the amp output transformer because of the current draw. A ten ohm, ten watt resistor across the binding posts will put the headphones in parallel with it and drop the resistance to about 8 ohms vs 50.

corrected
Edited by Happy Camper - 10/5/12 at 9:53pm
post #6725 of 14887
Quote:
Originally Posted by Happy Camper View Post

The BAT is fine to drive them but as I understand it, the resistors are for protecting the amp output transformer because of the current draw. A ten ohm, ten watt resistor across the binding posts will put the headphones in parallel with it and drop the resistance to about 12 ohms vs 50.

 

Are you referring to a device such as this?

 

http://www.radioshack.com/product/index.jsp?productId=2062291

post #6726 of 14887
Quote:
A ten ohm, ten watt resistor across the binding posts will put the headphones in parallel with it and drop the resistance to about 12 ohms vs 50.

Not true. The resultant resistance is always smaller than the smallest resistor when connected in parallel.

For 2 resistors in parallel the formula is R1 x R2 / R1 +R 2.

Which, for 50 Ohms and 10 Ohms comes to 8.333 Ohms.

50 and 12 is 9.677 Ohms

50 and 15 is  11.538 Ohms

post #6727 of 14887

I thought it was bad for tube amps to run the HE6 out of the speaker taps without resistors or the HE Adapter, no matter what the wattage is.

post #6728 of 14887
Cool. My number may not be exact but you have proved the point.

Dr. Roberts, those are the resistors and yes, the Mills resistors are the better resistors.

Type in resistors + transformers in the search and you'll get three pages of info pertaining to the topic.

Grokit has been with in this journey from the beginning so should be a valuable resource.
Edited by Happy Camper - 10/5/12 at 9:48pm
post #6729 of 14887
Quote:
Originally Posted by wink View Post

Not true. The resultant resistance is always smaller than the smallest resistor when connected in parallel.

For 2 resistors in parallel the formula is R1 x R2 / R1 +R 2.

Which, for 50 Ohms and 10 Ohms comes to 8.333 Ohms.

50 and 12 is 9.677 Ohms

50 and 15 is  11.538 Ohms

 

So Wink, which of those resistor values would you connect to the binding posts of the 55 watts p.c. BAT, the 10, 12, or 15 Ohm? The three values that you mention, including the one that was recommended by Happy Camper, all seem, to this admitted neophyte in such matters, would do the trick.

 

Thanks mate for sharing your knowledge. 

post #6730 of 14887
Quote:
Originally Posted by grokit View Post

I thought it was bad for tube amps to run the HE6 out of the speaker taps without resistors or the HE Adapter, no matter what the wattage is.

 

 

Thanks for the confirmation grokit. You know the old saying......"two heads are better than one".

post #6731 of 14887

Ok guys,

 

So what's the verdict on the HiFiMan adapter?  Is it preferred resistors, does the adapter screw up the sound quality?  What's the deal?

post #6732 of 14887
Quote:
Originally Posted by mikek200 View Post

Another option ,is from Norse Audio.

Trevor made this for me,at a very attractive price,..Trevor does all my cable work.

 

http://www.norseaudio.com/productimages/SkuldSeries/Skuld4/Skuld4_adapter_banana01.png.

 

Norse Audio:

916-457-7946

 

Umm... that's my phone number. 

 

se

post #6733 of 14887
Quote:
Originally Posted by Steve Eddy View Post

 

Umm... that's my phone number. 

 

se

 

 

 

 

 


Edited by preproman - 10/6/12 at 8:23am
post #6734 of 14887
Quote:
Originally Posted by Steve Eddy View Post

 

Umm... that's my phone number. 

 

se

That is classic! biggrin.gif

post #6735 of 14887

Well,maybe they are forming a partnership??...LOL

 

If that doesnt work ,you can call :

925-726-7088...that might work...

 

OOOOPS....Talk about a typo??

 

No wonder Trevor hasn't responded to my e-mails???

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