Jump to content

The Headcase Stax thread


Recommended Posts

"EDIT: If anyone is curious I can upload photos of the stair solder joint covering on the mk1 tomorrow."

I'd love to see the solder joint pic.

Someone had wanted more pics of the phones disassembled but it took 3 hours to get the &*^*% pads back on! (Just like Spritzer said in the blu tack mod thread, "patience of a saint." I went ahead and blu tacked the gaps in the piece so they are definitely sealed now. Also, the pad spring was 95mm so I stretched the ring out to 100mm before putting back together." 

 

Link to post
Share on other sites
  • Replies 13.5k
  • Created
  • Last Reply

Top Posters In This Topic

Top Posters In This Topic

Popular Posts

Isn't everybody glad that I'm crazy enough to buy this stuff and have Kevin rip it apart?   

I have compared the 009 and 009S running from the same amp (T8000) today. The room was somewhat quiet, but I had only two source options: my iPhone (connected through Apple's lightning adapter direc

Look what just showed up.  I decided to treat myself for my birthday...    Sounds brilliant with the HE90 and is pretty much required to use them.  Also the build quality is nothing short o

Posted Images

Just purchased a Stax SRM-1/MK-2 amp, with one side converted to a pro bias out put.  Seller say's everything is working ok, just a worn looking case.  I hope I like it with my SRX-3 MK III normal bias headphones.

  • Like 2
Link to post
Share on other sites
On 4/25/2020 at 12:52 PM, Timb5881 said:

Just purchased a Stax SRM-1/MK-2 amp, with one side converted to a pro bias out put.  Seller say's everything is working ok, just a worn looking case.  I hope I like it with my SRX-3 MK III normal bias headphones.

Was that the one on EBAY for $150?

Link to post
Share on other sites

What, not fighting to the death with your bare hands over a piece of gear you both were interested in? This isn't the Head-Case I know.

  • Like 2
Link to post
Share on other sites

Well it arrived yesterday.  I have a ground hum issue, my house unfortunately only has 2 prong no ground.  I am going to run a ground cable out the window and try and see if that works.  Low bias works ok, as does the pro.

Link to post
Share on other sites
  • 3 weeks later...
5 hours ago, dripf said:

If they're re-issuing it with EVEN MORE PROBLEMS, I will take a dim view of the company.

FTFY

Link to post
Share on other sites

I hope they change the freaking headband. The 007 Mk2 is one of the few headphones I straight up cannot wear. The self-adjusting headband strap is too tight and keeps pulling them out of place, and there is absolutely no articulation on the earcups at all, so they're never exactly right. Since the 007 is so fit dependent, I have to pretty much hold the earcups in place. Yeah, the 007 still sounds very good (modded, tweaked, etc) but if you can't use it, what use is it?

Stax have a LOT of work ahead of them, and so far all we've seen is lackluster amps at twice the price they should be.

  • Like 2
  • Thanks 1
Link to post
Share on other sites
8 hours ago, morphsci said:

FTFY

Go over them again for me please.

I know they've reworked the cable relief and have had channel balance problems to an unknown extent. I'm going to be buying one so long as it doesn't get overpriced like the new 700 amplifiers.

  • Like 1
Link to post
Share on other sites

I am new to this forum, so if the question below have been answered, please bear with me, and help point me to the post.

I have an Stax Lamda and SRD 7 combination. Recently I opened up the SRD 7 to take a look inside and found the two transformers quite anaemic. I thought may be the performance of the SRD 7 could be better if we use a better transformer. I am using an Audio Research VS115 power amp to drive it.  Looking the schematic, it looks look the transformers are like tube output transformers. Does anyone have any idea about what spec those transformer would be like, primary impedance (facing the loudspeaker output from the amp) vs secondary impedance (facing the stators). Would a 10K : 8ohm push pull output transformer be suitable for this, just want to experiment.  Any advice would be appreciated.

Link to post
Share on other sites
19 hours ago, matthew-levi said:

I thought may be the performance of the SRD 7 could be better if we use a better transformer.

You can find a SRD-7 schematic here. More than anything they are isolation transformers because the energizer needs to have a 230 volt DC bias on the headphone side. Your driving amp modulates the audio signal on top of this. The transformer is likely fairly high impedance, and unity gain. You can see in the schematic that Stax put a 27 ohm power resistor load across each primary for amplifier compatibility.

Beware of the high voltages, you play with this at your own risk and the voltages are potentially lethal.

  • Confused 1
Link to post
Share on other sites

The transformers in SRD 7 are not isolation transformers. I have measured the input voltage (from the amplifier loudspeaker terminal) and the SRD 7 transformer output voltage to the earphone. I put a 1Khz 1 volt input into the transformer and the output is about 36 volts. So its a step up transformer. 

Link to post
Share on other sites
On 4/7/2019 at 10:55 AM, spritzer said:

Also sunshine is ultimate enemy of electrostatics as it breaks down the diaphragms over time. 

That's pretty scary. Why doesn't STAX release a dark version of the dust cover? I thought I was fully protecting my L700 with the official transparent cover, but I guess I'm going to have to throw a dark t-shirt over them or something 😅

Link to post
Share on other sites

In my opinion the direct sun light means direct UV that is degrading many materials.

I think that plastic dust cover is not transparent for UV and it means you shouldn't worry about it.

But probably more dangerous is heat  from sun light. If you do not have windows with infrared filters on the glass (for example I have), it is better to place Stax in the shadow.

  • Thanks 1
Link to post
Share on other sites
1 hour ago, Katyusha said:

Do people here still think the SR-007MK1 is better than the current 007MK2.9?

"Better" is a relative term, each has its advantages and disadvantages.
There are several SR007Mk1 variations (70xxx with the carbon box, 71xxx, SZ1) and it is probably very hard to find a 'golden' sample now, because why would anyone sell such a headphone, unless he is completely unaware of the differences and happen to accidentally own such a pair. And without comparing two SR007 headphones side-by-side(maybe new pads on both and a properly seating headband, since both may also affect the sound), it may be difficult to evaluate it.
So for practical purposes, the Mk2.9 should be a better, safer option.

Edited by padam
  • Like 2
  • Thanks 1
Link to post
Share on other sites

What's the final word on the L700 MK2? Are they sonically different/better than the L700, or just the same earspeakers with better materials? The Minidisc video review says there can be minor differences due to a higher clamping pressure, but other than that there are very few comparisons online.

I might get a chance to buy an MK2 and sell my MK1, but I'd like to know if it's worth the hassle.

Thanks

Link to post
Share on other sites

These are my subjective impressions. 

My chain Mac Book pro - > Denafrips Ares II - > KGsshv dual outputs (both L700 OG and L700 Mk II connected) 

L700 Mk II have tighter bass the reason could be due to angled metal forks giving it tab better clamping force and the may be the new cable might have something to do with it as well. L700 MK II is sharper and little more efficient than the L700 OG. Little better detail retrieval as well (I could be wrong as well). 

Hope this helps. 

  • Like 1
  • Thanks 1
Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


×
×
  • Create New...