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HifiMAN HE-6 Planar Magnetic Headphone - Page 450

post #6736 of 14911
Quote:
Originally Posted by preproman View Post

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?

a DIY one i made with premium parts , sure messed up the sound. Thought adding 10 ohm in parralel will help as the load imp. is reduced, but it didnt. Maybe the resistor in parallel reduced the current through the HE6. But in all the sound was worse than direct connection (to speaker posts)

For tube amps adapter is a necessity, but i wont put he-adapter in , unless i have a 300w+ amp.
post #6737 of 14911
Quote:
Originally Posted by singh View Post

a DIY one i made with premium parts , sure messed up the sound. Thought adding 10 ohm in parralel will help as the load imp. is reduced, but it didnt. Maybe the resistor in parallel reduced the current through the HE6. But in all the sound was worse than direct connection (to speaker posts)
For tube amps adapter is a necessity, but i wont put he-adapter in , unless i have a 300w+ amp.

This was my finding as well. The resistor took some of the dynamics away.
post #6738 of 14911
Quote:
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.

Whichever is roughly the same as the output impedance recommended for the amp.

 

Realistically, though, the speakers' impedance may nominally be 8 Ohms, but in reality can vary from 2 ohms to over 20 in some speakers.

 

If your amp has a nominal recommendation for 8 Ohms speakers, any of the resistors mentioned will work but the 10 Ohm ones will be closest to the manufacturer's specs.

post #6739 of 14911
Quote:
Originally Posted by Dr. Roberts View Post

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".

 

To be a bit more specific, I'm pretty sure it's just OTL tube amps that are in danger. A transformer-coupled tube amp should be fine, but if it was me I would still double-check to be absolutely positive.

post #6740 of 14911
Quote:
Originally Posted by grokit View Post

 

To be a bit more specific, I'm pretty sure it's just OTL tube amps that are in danger. A transformer-coupled tube amp should be fine, but if it was me I would still double-check to be absolutely positive.

 

Ideally the load tied to the transformer secondary should be the same as the rating for that tap.

 

Output transformers are designed to present a specific load impedance to the tube when the appropriate load is tied to the appropriate tap on the output transformer. For example, you might see an output transformer that's rated with a 5k ohm primary and say 8 and 16 ohm taps on the secondary. Output transformers are step-down transformers and like any other transformer reflect impedances as the square of the turns ratio. So for 5k:8 ohms, that's a turns ratio of 25:1. But put say a 50 ohm load on that same 8 ohm tap, and how the transformer reflects 31k back to the primary. And while it won't necessarily damage anything, the tube won't perform as well with a 31k load as it will with a 5k load.

 

se

post #6741 of 14911

This  ^^^

post #6742 of 14911
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.

 

NVM.  should read the last page before I post...


Edited by HeadphoneAddict - 10/6/12 at 8:45pm
post #6743 of 14911
Quote:
Originally Posted by wink View Post

Whichever is roughly the same as the output impedance recommended for the amp.

 

Realistically, though, the speakers' impedance may nominally be 8 Ohms, but in reality can vary from 2 ohms to over 20 in some speakers.

 

If your amp has a nominal recommendation for 8 Ohms speakers, any of the resistors mentioned will work but the 10 Ohm ones will be closest to the manufacturer's specs.

 

Thanks Wink. The BAT is equipped with 4 taps pc in order to drive loudspeakers rated between 4 and 16 ohms. Ordered (2) Mills 10 ohm (12 watt) resistors to connect to the 8 ohm taps in parallel.

 

The math should work!


Edited by Dr. Roberts - 10/7/12 at 7:10am
post #6744 of 14911
Quote:
Originally Posted by grokit View Post

 

To be a bit more specific, I'm pretty sure it's just OTL tube amps that are in danger. A transformer-coupled tube amp should be fine, but if it was me I would still double-check to be absolutely positive.

 

I have a pretty good idea of what Victor would have to say. He is a perfectionist who is very protective of his circuits, which he has every right to be but would consequently spoil my fun.

 

My thinking is that the Marantz SA-7S1 SACD Player > Aesthetix Calypso Signature (with NOS Philips & Mullards) Linestage > BAT VK-55SE (with upgraded NOS valves) > HiFiMAN HE-6 has the potential to provide a jaw-dropping listening experience.

 

Thanks to all of the resident HF gurus for their invaluable assistance.

post #6745 of 14911
I'm particularly interested in how these perform with the BAT. I got a feeling it will be special.
post #6746 of 14911

 

It's pretty.

post #6747 of 14911
That is one good looking amplifier. Wow.
post #6748 of 14911
Quote:
Originally Posted by grokit View Post

 

It's pretty.

 

 

What's the 

 

 

post #6749 of 14911
Quote:
Originally Posted by preproman View Post

 

 

What's the 

 

 

 

Depends on how  you want them. There is a SE version and then they are also capable of running mono so you can run a pair of monobloc SEs.  biggrin.gif

 

The base configuration starts at $3995 and the SE version retails for $5995.  I think the monoblocs just double the price.


Edited by Audio Addict - 10/7/12 at 12:50pm
post #6750 of 14911

So entry is $5k...

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