Head-Fi.org › Forums › Equipment Forums › Headphones (full-size) › HiFiman HE-500 (HE as in High End) Proving to be an enjoyable experience in listening. .
New Posts  All Forums:Forum Nav:

HiFiman HE-500 (HE as in High End) Proving to be an enjoyable experience in listening. . - Page 979

post #14671 of 14679
Quote:
Originally Posted by hifimanrookie View Post


@thurstonx

This cable would go perfctly with ur red grills biggrin.gif

 

I know!  And my birthday is very soon.  PM me and I'll shoot you my address.  You are SO generous! :D

 

I'm very happy with the braided cable I made for the HE-560s (and 500s, too, while they're still around).  Looks and sounds great.  A bit subtler than those you show, though that is a nice red.  The red grills (only on the HE-500s; the HE-560s have enough going on with the wood veneer) are on hiatus for now.  I like my flame grills, and while one pair does have red organza underneath, the grills are flat black.  Have a look at the HE-560s with a lavender organza (so thin and small a piece it just looks silvery, which was the idea) and the aforementioned braided cable.

 

post #14672 of 14679
Quote:
Originally Posted by StanD View Post
 

If you do the math you will find that to be incorrect. The inductance or capacitance in a headphone cable is very very small.

 

 

Quote:
Originally Posted by borrego View Post
 

 

Show me the math then.

 

What I meant in the original post was saying the short single wire cable does not make much difference to the total resistance/capacitance/inductance to worth replacing. So I agreed your point to a certain degree.

 

For all the people switching/upgrading cables in this community, the objective is always to tune the frequency response. Only inductance and capacitance, no matter how small, would affect the frequency response. Capacitance per 100M is the common specification audio cable manufacturers stated.

 

No one will upgrade to a gold plated silver cable to reduce the resistance so that they can lower the volume pod for 1/100 of a turn.

 

I am talking about short cables, say under 5m here. So increased resistance/impedance of long cable would affect dampening factor of the amp does not apply here.

 

I have built speaker crossover and understand how a 0.1u capacitor would affect sound. The HE-500 has single driver per side so resistence/

Simply, I measured the capacitance of the stock HD600 cable, it was 220 pf. At 300 Ohms the -3dB fc (corner freq) is around 2.4 MHz, well above audio. The truth is we are looking at a much higher frequency as the corner frequency is even higher as most of the capacitance is driven by the output impedance of the amp in series with the cable resistance which is much lower than 300 Ohms. So let's say your amp has an output impedance of 10 ohms and your cable has a resistance of 2 Ohms, the fc is around  60 MHz. These are reasonable approximations as the capacitance is distributed along the cable as is its resistance. These are way above audio and we shouldn't lose sleep over it.

I found a link, below, that shows the equation and has a calculator on the webpage. Like I said the math is simple.

http://www.sengpielaudio.com/calculator-RCpad.htm

 

A closer model is the output impedance of your amp + resistance of the cable driving the headphone impedance in parallel with the capacitance. Still an approximation. Way above audio.


Edited by StanD - Today at 7:34 am
post #14673 of 14679
Quote:
Originally Posted by daerron View Post
 

I purchased a replacement cable from Charleston Audio Company. Christopher is fantastic to deal with, responds promptly to emails and my cable was finished and shipped inside 3 days, should hopefully receive it at the end of next week! He included a bit of extra wire so that I can rewire the inside of the headphone if I so wish.

I don't think replacing such a short piece of wire will make much difference, but then again I don't like the way the wiring was done inside as it looks very shoddy with dull solder joints. You can also see that they used wire pigtails to wire the SMC socket and headphone driver separately and simply soldered the two together and covered it with heatshrink just like I would do on my hobby RC aircraft. Not particularly fantastic work for the $700 one was originally asked to pay and smacks of manufacturing convenience.

 

I felt the same as you did when I first opened up the grilled of my HE-500. The heatshrink section looks very suspicious.

 

But I also think the heatshrink "pigtails" section might have something to do with sonic tuning. The wire from the driver is sure long enough for soldering directly to the SMC socket (if not, then Hifiman can sure make the cable out from driver longer at the very beginning.) Why the extra manufacturing step to solder another wire to extend it just another inch and have to put shrink wrap on it?

 

I suspect the "pigtail" wire section is a resistor wire just to increase the impedance of the headphones.

post #14674 of 14679

In the Chinese headphone bbs.erji.com forum. Fang stated the HE-500 was originally called the HE-6P which he replaced the gold foil wire in the diaphragm with aluminum foil wire. And the result was too much treble which he had to tame with additional "dampening".

 

Thus the additional dampening might just be that short sections of resistor wire.

post #14675 of 14679
Quote:
Originally Posted by borrego View Post
 

In the Chinese headphone bbs.erji.com forum. Fang stated the HE-500 was originally called the HE-6P which he replaced the gold foil wire in the diaphragm with aluminum foil wire. And the result was too much treble which he had to tame with additional "dampening".

 

Thus the additional dampening might just be that short sections of resistor wire.

Nope, that's not likely to do anything.

If anything using different resistors for each cup could be used to balance the transducers. This would not work well for a dynamic headphone with a varying impedance curve.


Edited by StanD - Today at 11:08 am
post #14676 of 14679
Quote:
Originally Posted by StanD View Post
 

Nope, that's not likely to do anything.

If anything using different resistors for each cup could be used to balance the transducers. This would not work well for a dynamic headphone with a varying impedance curve.

 

Agree with Stan, probably done to match the driver impedance. Looks like I have to be careful with that.

post #14677 of 14679
Quote:
Originally Posted by daerron View Post
 

 

Agree with Stan, probably done to match the driver impedance. Looks like I have to be careful with that.

I was just hypothesizing as if there was such a resistor, I haven't actually looked to see if there is a resistor in place.

post #14678 of 14679

I'll check with a multimeter when I open the cups again. Don't want to upgrade the wiring and be stuck with an impedance mismatch. The drivers on my HE-500 are already quite high at 52/53 ohm. The one driver actually has a combination of that red and OCC wire thrown into the mix!

post #14679 of 14679
Quote:
Originally Posted by daerron View Post
 

I'll check with a multimeter when I open the cups again. Don't want to upgrade the wiring and be stuck with an impedance mismatch. The drivers on my HE-500 are already quite high at 52/53 ohm. The one driver actually has a combination of that red and OCC wire thrown into the mix!

Let us know, I'm curious but too lazy to open up my HE-500's. :deadhorse: No, I won't get up and run.

New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Headphones (full-size)
Head-Fi.org › Forums › Equipment Forums › Headphones (full-size) › HiFiman HE-500 (HE as in High End) Proving to be an enjoyable experience in listening. .