WOO-HOOOO... WA7 "fireflies"!!! - Page 6

i'm running mine in a non airconned room but ambient temperature is quite cool. I'm able to run my i7 pc at 38-40 degrees under light load, so ambient temp is about 20 degrees without much airflow. The amp and the power block are actually running quite hot, but nothing I haven't seen before.

just finished dinner.

 

sydney is quite hot today compared to last week. 

 

the room is quite "warm" too. 

 

i turned on the amp again and lets see what will happen.

 

i dont know the temp of my dell i7 mobile workstation which i am using to type these word (and play dota2 soon:)

 

the temp of my rmbp sitting next to dell is like 48C. nothing is running except Vox playing some flac files. 

 

psu is cool now (just turned on 1 min ago)

 

metal case is cool too. 

 

local time is 10:09pm.

 

 

ps.

i did slide open a little window just behind the amp to improve the airflow.

Edited by alwaysec - 2/9/13 at 3:13am

forgot to mention, the voltage was defaulted to 220v by a2a (i guess). 

 

i just finished one good game, the case is warm and so is the psu. 11:14pm now. 

Having sat idle for a few hours the PSU is cold, but it is in front of a window behind my desk and it is winter here.

i like winter, but summer is here.

 

it is burning hot now, both. 

 

11:58pm

fyi

 

the setting is hi-Z and USB

i can NOT hold the psu for an extended period of time. i dont have a cooking thermometer. i already turn off the mbp, so cant compare to its power supply. however, the psu is certainly hotter than the mbp power or iphone 4g (my company phone is 4g too). 

 

damn it. it seems mine does have a problem. 

 

 

ps.

the glass is very hot too

Edited by alwaysec - 2/9/13 at 5:54am

Just shoot Jack an email. He'll probably give some insight or ask you to send it back. He needs to know if there are problems with these, so he doesn't wind up shipping other units and having more problems (Imagine if no one had told Jason about the issues with the Schiit Magni). If there is something making it unusually warm, he'll probably replace it for free.

 

EDIT: Make sure you mention you're in Australia and bought it from Addicted to Audio. He'll still support you, but it would be a good idea for him to know what the power situation is.

Edited by wes008 - 2/9/13 at 5:59am

I would suggest acquiring an infrared thermometer, General Tools IRT207 for example, and measuring the temperatures. They are fairly inexpensive. The IR thermometer is also handy later to monitor tube temperatures. In my WA3 a 6080wc runs approx 162 deg C while a 6AS7G will run 129 deg C.

Sounds like you may possibly have a issue with the heat.  I had mines running almost 24 hours straight and did about 3 hours of listening in a 75 degree room.  PSU and WA7 is warm only, surprisingly runs cooler than I would expect.  I used both the Sovtek tubes and the EH in this way.  You should definitely contact Woo Audio and inquire about it.

 

One issue I am having intermittently is the sound would go to a high pitched digitized tone for a few seconds or longer sometimes.  Sounds like the DAC is resolving the data improperly or something.  I am guessing it is not the tracks I am playing as the same track can play perfectly fine sometimes and sometimes it will just slowly fade in as if the data buffering is getting overloaded or something.  Sometimes just stopping the track and restarting solves it.  Bit annoying, but still love the WA7 so far.  This is all guessing at what may be happening and only my opinion/description of what is happening for me.   Excuse me for my ignorance.  By any chance, does anyone else have this issue?  I think MrBigsby did mentioned you had a similar experience on your first day with the unit, has it occurred again for you?

 

Thanks for any input that is shared

I had this happen to me last night while first using the amp. I think I had been listening to it for only 10 minutes or so after a 10-15 minute warm up period. Shortly after that was a segment with cymbals that also sounded digitized. However, for at least an additional hour or so of listening the problem did not return. Including the same track with cymbals. Btw, I'm using EH tubes.

On a positive note I found the Head-Fi/HDtracks Open Your Ears sampler to be the most engaging I've ever heard it through my AKG702s which are usually one of my least used as they can be a bit bright for me. That's not to say the amp rolled off highs, it seems all the info was there but it was no longer irritating. Now I'm looking forward to pulling my Grados out to see if I can listen to them for more than the usual 15 minutes max. 😁

Happy listening everyone!