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The Stax Thread III - Page 162

post #2416 of 3330
Quote:
@astrostar59, IMHO, just go for it. As others have said and from my little personal experience, chances are low.

Thanks, I think I will do that. The sound has ruined me forever!

Maybe the 009s having issues are mainly from PJ? Dunno. But it seems most issues appear
in a month or so, so I will be covered by Synergy UK distributor (UK Stax importers).

I'll post back here when I have lived with them a few weeks, and more importantly in 2 months
when I get back to Spain and hook up my Audio Note front end.
post #2417 of 3330
Quote:
Originally Posted by AnakChan View Post

@astrostar59, IMHO, just go for it. As others have said and from my little personal experience, chances are low.

Test it when you get it. In the rare case if you have problems, you get great support anyway. And probably the most important thing is that when your problem is resolved the SR-009 is sonically rewarding that you'd forget you had problems with it.

AnakChan:

 

How do you divvy up your hearing time between the 007 mk1 and the 009 ? These recent posts have got my buyer's adrenalin pumping again !

post #2418 of 3330

Hi Folks,

 

I have an SRD7 - which is not working...

 

It appears to have 3 resistors that have been  cut in half (!) - 51k, 100k, 1M - and it is therefore delivering no bias.

 

It is an early 100V only unit - all the circuit diagrams I have found are for the later multi-voltage units

 

The other strange thing is that there is no 51k resistor on any of the SRD7 schematics, but it appears on one of the power input lines of the SRD5 schematic.

 

So it may be that I have an early production SRD7 with a circuit closely related to the SRD5 (I have not traced the circuit... was hoping not to have to !)

 

Does anyone know a tech in Melbourne (Australia) familiar with Stax headphones and energizers who could help with getting this beastie working again?

 

bye for now

 

David

post #2419 of 3330
Quote:
Originally Posted by kothganesh View Post
 

AnakChan:

 

How do you divvy up your hearing time between the 007 mk1 and the 009 ? These recent posts have got my buyer's adrenalin pumping again !

 

Hmmm...that's kinda of a hard one 'cos I do have my mood swings and therefore so are my preferences. Having said that I think I do reach out to the 009s more than the 007Mk1s though. If I dare speak on behalf of my Tokyo Stax friends, for some reason we here in Tokyo seem to lean more towards the 009s whilst our overseas friends mostly seem to sway more towards to the 007Mk1s. To be honest, I don't really know why that's the case - maybe they get access to the BHSE more easily than us. Having said that, I've got an Electra.

post #2420 of 3330
Quote:
Originally Posted by AnakChan View Post
 

 

Hmmm...that's kinda of a hard one 'cos I do have my mood swings and therefore so are my preferences. Having said that I think I do reach out to the 009s more than the 007Mk1s though. If I dare speak on behalf of my Tokyo Stax friends, for some reason we here in Tokyo seem to lean more towards the 009s whilst our overseas friends mostly seem to sway more towards to the 007Mk1s. To be honest, I don't really know why that's the case - maybe they get access to the BHSE more easily than us. Having said that, I've got an Electra.

Ok, let me ask this question this way: I am classic rock-only person. For this genre, what would you reach for ? I have the KGSShv and the Stax 717. Thanks

post #2421 of 3330

^. Just to add to my last query, my mood swings are between the Beatles and Led Zep, Pink Floyd to Deep Purple, Boston to Jimi Hendrix etc etc

post #2422 of 3330

My experience with the STAX Headphones is, if you have any imbalance problem, it will be from beginning on or will develop in a worse way very quickly.

My Lambda and the 007Mk2 are flawless from the start.

 

The 009, a early build version, had a slight imbalance problem from the moment i had it.

I thought it might disappear after some time of using, especially it was not noticeable after the headphone had some rest for about 10 days or so.

But i was wrong. It came back very quick and got worse and worse.

Since i own more than one Amp i was able to exclude a amplification error.

 

I decided to send it in for repair, but first they could not find any error. After the second attempt STAX Germany replaced it to a brand new Headphone.

Since then no problem at all and it works perfect.

post #2423 of 3330
Quote:
Originally Posted by dlaloum View Post
 

Hi Folks,

 

I have an SRD7 - which is not working...

 

It appears to have 3 resistors that have been  cut in half (!) - 51k, 100k, 1M - and it is therefore delivering no bias.

 

It is an early 100V only unit - all the circuit diagrams I have found are for the later multi-voltage units

 

The other strange thing is that there is no 51k resistor on any of the SRD7 schematics, but it appears on one of the power input lines of the SRD5 schematic.

 

So it may be that I have an early production SRD7 with a circuit closely related to the SRD5 (I have not traced the circuit... was hoping not to have to !)

 

Does anyone know a tech in Melbourne (Australia) familiar with Stax headphones and energizers who could help with getting this beastie working again?

 

bye for now

 

David

 

Hi,

 

what about just replacing the resistors and see what happens? Although if you don't feel at ease with a soldering iron and line voltage, better let sb do it.

 

As for voltage I think they were all capable of up to 240V AC since they use a zener diode to cap the AC coltage at 82V and then double it but some didn't state so on the box... Here's the schematics anyways - http://img99.imageshack.us/img99/6717/srd7ij0.jpg

If you want to play it safe and are in 220-240 country - use a converter - it doesn't draw a lot of power.

 

Joachim

post #2424 of 3330

I'm trying to find a comparison between the KGSS-HV and the BHSE and the closest thing I can find i s Asr's old mini-review of the BHSE and a regular KGSS.
 

Has anyone done a comparison of the BHSE with the KGSS-HV?


Edited by dreamwhisper - 5/21/14 at 8:23pm
post #2425 of 3330
Not sure how relevant a comparison review would be between the DIY built KGSSHV and the factory (consistent) BHSE.

Sure the builders follow circuit diagrams, but the case is be-spoke and other variables may / probably will slant the SQ a bit?

While on that, does the source / actual manufacture of the trans and capacitors remain the same throughout all builds. You
know those 2 elements have a big effect on the SQ as regards component choice and quality.
post #2426 of 3330
Going back to that, if Justin built some KGSSHV I would be on the list!
post #2427 of 3330
Quote:
Originally Posted by dreamwhisper View Post
 

I'm trying to find a comparison between the KGSS-HV and the BHSE and the closest thing I can find i s Asr's old mini-review of the BHSE and a regular KGSS.
 

Has anyone done a comparison of the BHSE with the KGSS-HV?

I have both and the BHSE has more transparent sound.  It also has better clarity & details with larger & deeper soundstage.  The KGSSHV (500 V version) is warmer with slightly punchier sound.  Overall, the BHSE is more refined to my ears but the KGSSHV might be more "fun" sounding to some people.  The DIY T2 actually combine all the good characters of both the  KGSSHV & BHSE with even more textured bass & deeper & wider soundstage.  Note that each KGSSHV may sound slightly difference as this is depending on parts & voltage use. 

post #2428 of 3330

Years ago (and I mean DECADES, sonny....) I had a pair of ESP-9's, an SAE preamp and a Citation XII, AR XA turntable, ADC XLM and a Shure V15-III, Akai open reel, Dynaco FM5. Infinity speakers. QUITE THE SYSTEM for a college kid in 1971. (I had worked in a factory full time while taking 12 hours of physics, chemistry and math at university- don't ask me how I did that. I get tired now just writing it. In fact, I get tired now just THINKING about writing about it.) The speakers were all I could afford- but the headphones were about the best you could get back then.

 

Time goes by....

 

I had a pair of Sennheiser HD-580's.  Decent enough... didn't listen to them much.  Wasn't really into the hifi addiction all that much, had some gear but mostly just listened to what I had, NAD and Boston Acoustics. 

 

Then in 2002 I had a relapse of audiophilia gearitis, and I started building, buying, listening, trying...  Sat down one day and plugged the HD-580's into a Sugden integrated amp's headphone jack, and thought, "Hey these sound pretty good... wonder if a dedicated headphone amp would really sound better..."

 

I became a bit of a headphone nut, kind of, collected a whole bunch of dynamic 'phones & amps, built a bunch of amps, etc and so forth.

 

Added a Stax Lambda Signature and an SRM-T1.  Whoa. What detail! Great LF extension, overall clarity....  and all without the "bleeding ear treble peak" of the otherwise excellent Sennheiser HD-800's. Got a pair of Koss ESP-950's.  Yeah, these are great, too. A pair of 007 Mk I's.... tried an SRM-1 mk II but sold it, no real advantage for me over the SRM-T1, in fact I liked the T1 a little better... sold off almost all my dynamic and planar 'phones, building a T2 for like two years now....

 

Electrostatics are really where it's at.  When new dynamics come on the market, I hardly pay attention.  New planars, yeah, I'll read about them but am not really tempted to buy.  All I feel I need are my electrostatics.  (And the 67,000  FLAC tracks on my server....I have LPs  too but don't use headphones on that system)

 

Electrostatics have a "HEAR-THROUGH" quality  that I just don't get from dynamic or planar phones.

 



 

By the way, none of my electrostatic 'phones have a channel imbalance.  I bought them all used, they have all worked just fine.  I've heard of people having imbalances, but aamong the Koss ESP-950's and five pair of Stax 'phones I've bought used, NONE had channel imbalances.


Edited by milosz - 5/22/14 at 2:04am
post #2429 of 3330
Quote:
Note that each KGSSHV may sound slightly difference as this is depending on parts & voltage use
.

I would times that by quite a bit actually. I have worked with tube amp manufacturers and amplifier kit suppliers for quite a few years
and the end SQ changes quite a bit depending on the specs of the Capacitors (Black Gate were supreme but now not made),. Resistors (Tantalums are good)
Transformers quality (build quality, wide band, noise etc).

Just because the circuit is a certain design doesn't guarantee the exact SQ on offer. Put top parts into it and it will probably go to another level IMHO.
The opposite is also true. So unless a circuit design states exactly the rating and make of a part to use.....
post #2430 of 3330
Quote:
Originally Posted by kothganesh View Post

^. Just to add to my last query, my mood swings are between the Beatles and Led Zep, Pink Floyd to Deep Purple, Boston to Jimi Hendrix etc etc

Difficult to say. Probably depends on how you drive the omega 2. However, I can imagine the 009 getting tiring after a while if that is all you listen to all day and / or at fairly high volume level.
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