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HiFiman HE-500 (HE as in High End) Proving to be an enjoyable experience in listening. . - Page 922

post #13816 of 14627
Quote:
Originally Posted by daerron View Post
 

 

If your powered speakers have an on/off switch then the Mini-X will work fine. Unfortunately the output on the Mini-X is a straight loop-through of the input and bypasses the volume control. With my B&W MM-1 speakers this is not a problem as I can adjust the volume on the speakers. Apart from that the Mini-X remains a great amp for the HE-500. I still have no regrets about mine. There is a potential for noise on some Mini-X amps and there is also the issue of limited volume adjustment with the volume pot. You might want to have a look at the Mini-X thread to see the resistor network you can employ to lower the output and noise floor.

 

No, unfortunately they're passive speakers so that's no good.  I'm trying to determine if there exists some sort of passive switch or pass-through component with a headphone tap that might be able to suit my needs.

post #13817 of 14627
Quote:
Originally Posted by Ultramus View Post


Gain of the MJ is 18 iirc. Hopefully my meter is at home and I'll try to run sinegen and test the voltage at the pin outs if I can. I realize what the stats say, I just think he may be right in thinking the 500 might be getting more power than it let's on.

My other question is does gain affect the wattage out? I know generally you want less gain more power, would an amp with low gain pour in more power to the 500s at a given SPL? Or am I correct in assuming that no matter what, a transucer will produce the same SPL for a given wattage, always.

The wattage is VoltageAcrossHeadphones2/Impedance

The VoltageAcrossHeadphones is the signal voltage coming from the DAC multiplied by the amplifier's gain.

So amplifier gain along with the signal voltage affects the wattage.

 

There are current amplifiers (not commonly found), but that's another story, not in context of the MJ.

Different headphone transducers have different sensitivites, so they will most likely deliver different SPL for a given wattage

 

"would an amp with low gain pour in more power to the 500s at a given SPL?" That doesn't make sense. You would have to increase the signal coming from your DAC/source to compensate for the lowered gain.


Edited by StanD - 6/7/14 at 2:29pm
post #13818 of 14627
Quote:
Originally Posted by StanD View Post
 

The wattage is VoltageAcrossHeadphones2/Impedance

The VoltageAcrossHeadphones is the signal voltage coming from the DAC multiplied by the amplifier's gain.

So amplifier gain along with the signal voltage affects the wattage.

 

There are current amplifiers (not commonly found), but that's another story, not in context of the MJ.

Different headphone transducers have different sensitivites, so they will most likely deliver different SPL for a given wattage

 

"would an amp with low gain pour in more power to the 500s at a given SPL?" That doesn't make sense. You would have to increase the signal coming from your DAC/source to compensate for the lowered gain.

Yeah, exactly what I meant. A given transducer will give a fixed SPL for a voltage of X. Nothing will change that.

 

My meter is reading ~60 on either side, if I'm testing it right, I should be doing between active channel and ground of that side correct?


Edited by Ultramus - 6/7/14 at 7:44pm
post #13819 of 14627

I just recently just bought this can from Todd (TTVJ.com) a few weeks ago and absolutely love these. First time owning a Planar, though I found it interesting that Crutchfield has them as discontinued.

 

http://www.crutchfield.com/S-w34gTdWAJo9/p_818HE500/HiFiMAN-HE-500.html

post #13820 of 14627
Quote:
Originally Posted by iPaintCode View Post
 

I just recently just bought this can from Todd (TTVJ.com) a few weeks ago and absolutely love these. First time owning a Planar, though I found it interesting that Crutchfield has them as discontinued.

 

http://www.crutchfield.com/S-w34gTdWAJo9/p_818HE500/HiFiMAN-HE-500.html

Gratz!  HE500 IMO is a wonderful pair of HP, especially for the price.

post #13821 of 14627
Quote:
Originally Posted by iPaintCode View Post
 

I found it interesting that Crutchfield has them as discontinued.

 

http://www.crutchfield.com/S-w34gTdWAJo9/p_818HE500/HiFiMAN-HE-500.html

 

It is being replaced by the HE-560, which should be shipping in late June or early July.

post #13822 of 14627
Quote:
Originally Posted by rexirius View Post

It is being replaced by the HE-560, which should be shipping in late June or early July.

Or HE-400i. They both have some similarities and differences with the 500s.
post #13823 of 14627
Quote:
Originally Posted by MasterKuni View Post
 

 

No, unfortunately they're passive speakers so that's no good.  I'm trying to determine if there exists some sort of passive switch or pass-through component with a headphone tap that might be able to suit my needs.

 

I think the Mini-X thread also list a couple of mods where you can install a headphone jack on the front and implement a switch to toggle the output. Check out Robrob's posts.

post #13824 of 14627

I got my HE-500's this past Friday and love them - sound is/was amazing. I have been burning them in over night with a Aune T1 set to a little over halfway. Been listening to Santana and a few OSTs (The Last of the Mohicans, Halo (game soundtrack) & Sunshine). Woke up this morning and heard that they were severely distorting. Shut them down immediately. Let them sit for 30 mins until the T1 was completely cooled down and the headphones had a little time to rest - same thing. Mids/Highs sound ok but the lower end is nothing but distortion. Any ideas here? I have about 15-18 hours on them now. 

post #13825 of 14627
Quote:
Originally Posted by eth3rton View Post
 

I got my HE-500's this past Friday and love them - sound is/was amazing. I have been burning them in over night with a Aune T1 set to a little over halfway. Been listening to Santana and a few OSTs (The Last of the Mohicans, Halo (game soundtrack) & Sunshine). Woke up this morning and heard that they were severely distorting. Shut them down immediately. Let them sit for 30 mins until the T1 was completely cooled down and the headphones had a little time to rest - same thing. Mids/Highs sound ok but the lower end is nothing but distortion. Any ideas here? I have about 15-18 hours on them now. 

You sure that it isn't the T1? Try another amp with the HE-500's and another headphone on the T1.

post #13826 of 14627

I just plugged them into my Harmon|Kardon AVR and watched part of a BluRay. No distortion. Although, I had to max the receiver out to get a decent level of sound - assuming its under powered for the headphones. Sounded fantastic! Is the Aune T1 not a good match for this headphone?

post #13827 of 14627
Quote:
Originally Posted by eth3rton View Post
 

I just plugged them into my Harmon|Kardon AVR and watched part of a BluRay. No distortion. Although, I had to max the receiver out to get a decent level of sound - assuming its under powered for the headphones. Sounded fantastic! Is the Aune T1 not a good match for this headphone?

The A1 should work as it's rated for 1W at 32 Ohms. The output impedance is 10 Ohms which could be a problem if the HE-500 wasn't an Ortho. Since the impedance is 10 Ohms you will not get the full 1W at the headphone, more like just over 3/4 W.  SQ is another issue that I cannot address.

Either the Harmon Kardon doesn't have enough power or has a large series resistor with the headphone output, which is bad for delivering power to low impedance cans and bad for cans with wild impedance curves.

post #13828 of 14627

 

Quote:

Originally Posted by StanD View Post
 

The output impedance is 10 Ohms which could be a problem if the HE-500 wasn't an Ortho.

 

Dammit Stan, I’m a newbie not a audiophile! (Star Trek reference :blink:)

 

The T1 has sounded fantastic up until now. This was the first time I noticed any distortion. Been burning them in for the past 2 nights and some use throughout the day. 

post #13829 of 14627
Quote:
Originally Posted by eth3rton View Post
 

Dammit Stan, I’m a newbie not an audiophile! (Star Trek reference :blink:)

 

 

LMAO.  Nice Trekkers joke, Bones ;)  FTFY.  I often feel that way when reading Stan's posts.

 

Hope you get your HE-500s sorted.

post #13830 of 14627
Quote:
Originally Posted by eth3rton View Post
 

 

Dammit Stan, I’m a newbie not a audiophile! (Star Trek reference :blink:)

 

The T1 has sounded fantastic up until now. This was the first time I noticed any distortion. Been burning them in for the past 2 nights and some use throughout the day. 

We'll have to send you to Star Fleet Academy to bone up on being an Audio Officer.

Maybe you're overloading the input stage of the T1, try dropping the volume of the source. Are you using the DAC or just the Amp? I hope you get the HE-500 sorted out, they are fantastic.

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