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Aussie & NZ Head-Fiers Corner - Page 15

post #211 of 857
Quote:
Originally Posted by Gwarmi View Post





 Yep, Ray Samuels this week along with the LCD-3 ~ balanced good times!

 

 Two Dark Stars should make it before Christmas, along with an A10 Thunderbolt and B52, although I believe they have already

 been spoken for.

 



 

Gwarmi is your real name George? etysmile.gif Or are you just a big A2A fan?

post #212 of 857
Thread Starter 
Quote:
Originally Posted by Room40 View Post



 

Gwarmi is your real name George? etysmile.gif Or are you just a big A2A fan?


 

 Yep fan unfortunately!, I'm around there about 3 to 4 times a week since I live just up the road

 so I tend to find out all of these things pretty quickly.

 

 It's just a two man operation there now, George and Rendra.

 

 

post #213 of 857

 

@Room40

 

Scooter or Motorcycle? Which ever it is, I like it! 

post #214 of 857
Quote:
Originally Posted by Gwarmi View Post

 

 

 Spoke to George and he'll be shipping out the Woo Audio units with a little personal 1-page guide for general use

 and a pair of latex gloves for owners who are totally new to the wonderful world of tubes.

 

 For those that are new, it is generally recommended that you never touch the tubes with your bare hands

 even when cold, human skin oil can contaminate the glass of the tube causing hot spots during operation

 which will cause the tube to live a short life.

 

 Other tips ~ use for 8 hours at a time and give the tubes a rest by switching it off.

 

 The upgraded Woo tubes should be available too for those desiring a Mega Woo setup.

 

 Next week is Christmas indeed for Melbourne and Santa has been a very bad man - key word..

 

 Dark Star.... evil_smiley.gif

 

 




Thanks for the info. I was wondering about the glass envelopes. Reminds me of Halogen lamps (which fail very quick due to hotspots)

Do you think it's possible to extend operating time beyond 8hrs? I run a PC as source and when I've got time off the PC goes on in the morning, off in the Night, with me coming back and forth to it during the day. I do this frequently enough that a turn on turn off routine seems more harmful than not.

 

Being a bit of PC enthusiast I've been looking in to the idea of providing additional cooling. I've read a lot about valves online, and I'm definitely inclined to get some forced airflow over the valves to remove waste heat from the envelope, doesn't seem to be much else you can do. And I can't find anything on suitable water cooling sleeves and you can't go slapping little heatsinks over valves (cool spots vs hotspots, on the envelope I would think)

 

I'd be willing to cop a more frequent replacement routine if it meant I could operate for about the same time as the PC which tends to be 8+ hours (generally 10)

 

Anyway, I'm really looking forward to this week. I recall also putting in for one of those stands. Yeah yeah, get a cheap mug holder from spotlight...but I thought they looked nice!

post #215 of 857
Thread Starter 

 

 

 I'll have to ask George but I believe he's already contacted Woo Audio to confirm the 8 hour operation

 period - in any case, you're eating into the tube life ~ remember 2000-2500 hrs is a fair tube life so

 a basic calculation reveals that assuming no holidays or missed days on your part

 

 250 to 300 days before the tubes would be tired.

 

 Again, just a nice conservative estimate ~ Jack Woo might get back and say 'No way, 3000+

 hours' ~ who knows but 2000-2500 hrs is pretty standard.

 

 They actually don't run hot, I ran my hand within an inch of the Woo 6 after 5 hours and it

 was warm on a very muggy Melbourne afternoon in a room.

post #216 of 857
Thread Starter 
Quote:
Originally Posted by Gwarmi View Post

 

 

 I'll have to ask George but I believe he's already contacted Woo Audio to confirm the 8 hour operation

 period - in any case, you're eating into the tube life ~ remember 2000-2500 hrs is a fair tube life so

 a basic calculation reveals that assuming no holidays or missed days on your part

 

 250 to 300 days before the tubes would be tired.

 

 Again, just a nice conservative estimate ~ Jack Woo might get back and say 'No way, 3000+

 hours' ~ who knows but 2000-2500 hrs is pretty standard.

 

 They actually don't run hot, I ran my hand within an inch of the Woo 6 after 5 hours and it

 was warm on a very muggy Melbourne afternoon in a room.

 

 Shouldn't be a biggie though, just run back into the room once a day ~ press off on the

 Woo 6 and run off again, switch it back on after an hour or so. 



 

post #217 of 857
I haven't been around this site lately (and buying gears -good for the wallet though-) but count me in anyway. smily_headphones1.gif
post #218 of 857


 

Quote:
Originally Posted by Gwarmi View Post

 Spoke to George and he'll be shipping out the Woo Audio units with a little personal 1-page guide for general use

 and a pair of latex gloves for owners who are totally new to the wonderful world of tubes.

 

 For those that are new, it is generally recommended that you never touch the tubes with your bare hands

 even when cold, human skin oil can contaminate the glass of the tube causing hot spots during operation

 which will cause the tube to live a short life.

 


Thanks for the tip Gwarmi, but I was thinking what about the brand/paint marks that the manufacturers put on the tubes, like the Mullard shield for example, wouldn't that be harmful to the tubes as well i.e. create hot spots?

post #219 of 857
Thread Starter 
Quote:
Originally Posted by willmax View Post


 


Thanks for the tip Gwarmi, but I was thinking what about the brand/paint marks that the manufacturers put on the tubes, like the Mullard shield for example, wouldn't that be harmful to the tubes as well i.e. create hot spots?



 That's a point but the paint does not melt or become liquid it seems, human oily skin fragments though do tend to create hot spots.

 

 Heard back from the 'big cheese' himself ~ Mr Jack Woo ~ he confirmed the following precautions above for the best possible

 maintenance of the unit and tubes. A2A units will go out with rubber latex gloves so you don't have to touch them for any reason.


Edited by Gwarmi - 12/20/11 at 3:00am
post #220 of 857

I'll chip in again as I got my WA2 in the mail today. The total package for me was an Amp and one of those double stand things.

Both boxes were individually wrapped in bubble wrap and wrapped together in black packing film (tightly) in addition to internal packing material.

The woo box has packing material just like in earlier photos. This stuff is pretty strong, you can even sit on it (I did).

Upon opening the box, there was indeed a printed letter with statements on tube life to use gloves. There were indeed gloves included, but I managed to tear one...not a major issue. Folks probably have such gloves in a box somewhere (I do)

 

Also, some A2A stickers. Everyone likes stickers right?

 

On the Amp Side of things.

  • No printed instructions. Hit up the website for them.
  • Came with power cable, I wasn't expecting this (based on Woo site)
  • Well packed valve boxes.

        - In my pack, I got some 'International Servicemaster EZ80/6V4 rectifiers, a pair of 6DJ8s from Sylvania, The actual box says JAN with a NATO stock number and a packing date of 12-72, So they're older than I am. The Power valves came in Westinghouse Boxes, Both valves look identical, One says General Electric on the base, other other has no clear markings.

Voltage already set to 230v (it actually says 230v, not 220 like on the website, images in the manual pdf also indicate 230v).

The amplifier is quite heavy, and quite a bit larger than my Solid state one (which was bought at a not too different price some 6 years ago)

  • Build Quality is outstanding,

        - Underneath there is some venting, through these you can see how thick the panels are, or at least how thick the floor is.

        - The Input selector knob travels with a satisfying 'click'.

        - The volume knob is solid and travels smoothly from start to finish. It isn't loose or stiff, It sort of glides.

        - The casework is satisfyingly solid, and the engraved lettering etc is clean and readable.

        - The power switch, nice and clicky, satisfying with that slight movement of the button around it's hole (as in you can wobble the like knob a tad with the clearance allowed).

 

  • Installing tubes was both easy and concerning, having never done them before, you feel like you might break something, being glass and all. But follow the instructions and keep with it, the contacts in the socket will spread slightly to accept the pin at which point it continues easily enough.
  • Case Temperature is relatively cool, presumably because the major contributers to heat are on the outside.
  • Valve temp is moderate, You can feel it with your hand in proximity, The power Valves put out the most heat, Using a IR thermometer, I measured a Valve base temp of 95C closest to the glass envelope. Measuring through the envelope (note, reflective surfaces can intefere with readings to varying amounts), gets a plate temp (if that is what it is) of 120C. Room temp is about 25C. Blowing air over the valves, DOES lower temps, both at the base of the valve and on surfaces internally, The difference is many tens of degrees and is immediately measurable. Temp is steadily dropping as I wrote this. High 60s external, high 70s internal. If you like cooling things down like me, you may derive satisfaction from this. No discernible difference in sound based upon valve temps. But i'm the last person to ask on sound. I figure any heat other than what the cathode is getting from it's heater is basically waste heat.
  • The Amp shares a desk with a PC with many fans and radiator / pump, with a 5v USB fan pointed at it, If 'microphonics' is an issue, then it isn't in my situation. I've tried cranking up the fans for more vibration in the desk, If it is there, it isn't audible over the sound rushing water and air (duh). There are nice rubber feet on the amp itself. In any case I'm not concerned.

 

All in all, I'm really impressed by the Amp's physical qualities (that I can see). If any other Aussies and Kiwis are on the fence, I hope it helps.

 

Also, been using a pair of 32 ohm headphones, doesn't sound bad to me.

 


Edited by Zeruel the 14th - 12/20/11 at 4:29am
post #221 of 857

LCD3 and Dark Star.  That is serious ear candy.  If Schiit wasn't bringing out their statement amp, which has some awesome unique features, I would be all over the RSA Dark Star like a rash.

 

Did someone say that Headphonic has LCD3's as well?  You guys in Melbourne are very lucky.  I hope that A2A and Headphonic don't go the same way as 32 Ohm audio.

post #222 of 857
Thread Starter 
Quote:
Originally Posted by Kremer930 View Post

LCD3 and Dark Star.  That is serious ear candy.  If Schiit wasn't bringing out their statement amp, which has some awesome unique features, I would be all over the RSA Dark Star like a rash.

 

Did someone say that Headphonic has LCD3's as well?  You guys in Melbourne are very lucky.  I hope that A2A and Headphonic don't go the same way as 32 Ohm audio.



Hopefully we'll see a head to head match-up between the Statement and the Dark Star very soon smile.gif

post #223 of 857

Being that I'm two hours behind in Japan at the moment, I'll be around very late at night. Just trying to sort out what I will listen to music with on the plane back to Oz for Xmas.

post #224 of 857
Thread Starter 
Quote:
Originally Posted by Currawong View Post

Being that I'm two hours behind in Japan at the moment, I'll be around very late at night. Just trying to sort out what I will listen to music with on the plane back to Oz for Xmas.



 Make it a small tribute to Molly Meldrum  ~ poor bloke just got out of his coma today, he's a national icon that guy.

post #225 of 857

I get the impression that the Schiit statement amp may not be out until June 2012. I am happy to wait though.  Besides being able to save for it and the matching DAC, I also believe it will be the best option for my HE6 cans. 

Would love to see or hear a head to head comparison but am guessing that I will take yet another leap of faith. 

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