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WA7 Overheating - Page 2

post #16 of 31
2/15/13 at 12:04am
Quote:
Originally Posted by alwaysec View Post

6:15pm

 

34-35C, metal case

 

35c, glass top

 

36c, psu

I don't think those temps are too extreme.

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post #17 of 31
2/15/13 at 12:17am
Thread Starter 
Quote:
Originally Posted by Sylafari View Post

 

I don't think 36C for a PSU is that hot. 

no, it is not at all. 

 

but this will be a 8hrs monitoring. 

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post #18 of 31
2/15/13 at 12:26am
Thread Starter 

7:25pm

 

metal case: 39c

 

glass top: 40c

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post #19 of 31
2/15/13 at 1:37am
Thread Starter 

8:35pm

 

glass lid: 42c

metal case: 41c

psu: 39c

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post #20 of 31
2/15/13 at 1:50am

My Wa7 arrived this morning so I thought I would run a quick temp test while I try it out for the first time.

 

I am in Adelaide South Australia

 

The current at the wall is 250v measured

 

Ambient 26c , running Itunes lossless from a Dell 17r via Wasapi , Audioquest Forrest cable , Hi z volume 50% ,

Ety Er4s via 3.5 jack , glass on

 

                         power supply                  case                     glass                      tube

 

3 min                26c                                  26c                      26c                        31c

30min               32c                                  31c                      32c                        68c

60min               35c                                  35c                      36c                        75c

90min               35c                                  36c                      38c                        78c

120min             35c                                  37c                      38c                        78c

150min             35c                                  37c                      39c                        79c

180min             36c                                  38c                      40c                        79c

 

Power supply measured from the holes on top

Case measured from left side central

Glass measured from front centre

Tube measured top of flash

 

Hope that gives you something to compare to.

By contrast my LaFigaro 332s is running at 60c on the case after 30min and that's normal.

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post #21 of 31
2/15/13 at 3:20am
Thread Starter 

glass top: 40c

metal case: 41c

psu: 39c

 

tube is 50c (i know it is incorrect, but it is the best i can do now. here is what i use to measure the temp: http://www.jaycar.com.au/productView.asp?ID=QM7314)


Edited by alwaysec - 2/15/13 at 3:26am
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post #22 of 31
2/15/13 at 3:27am
Thread Starter 
Quote:
Originally Posted by Dogmatrix View Post

My Wa7 arrived this morning so I thought I would run a quick temp test while I try it out for the first time.

 

I am in Adelaide South Australia

 

The current at the wall is 250v measured

 

Ambient 26c , running Itunes lossless from a Dell 17r via Wasapi , Audioquest Forrest cable , Hi z volume 50% ,

Ety Er4s via 3.5 jack , glass on

 

                         power supply                  case                     glass                      tube

 

3 min                26c                                  26c                      26c                        31c

30min               32c                                  31c                      32c                        68c

60min               35c                                  35c                      36c                        75c

90min               35c                                  36c                      38c                        78c

120min             35c                                  37c                      38c                        78c

150min             35c                                  37c                      39c                        79c

180min             36c                                  38c                      40c                        79c

 

Power supply measured from the holes on top

Case measured from left side central

Glass measured from front centre

Tube measured top of flash

 

Hope that gives you something to compare to.

By contrast my LaFigaro 332s is running at 60c on the case after 30min and that's normal.

what thermometer did you use? yours is cooler than mine. 

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post #23 of 31
2/15/13 at 5:23am
Thread Starter 

final measurement

 

12:10am

 

room temp: 25

 

glass top: 41c

metal case: 39c

psu: 40c

 

good night

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post #24 of 31
2/15/13 at 5:44am
Quote:
Originally Posted by alwaysec View Post

final measurement

 

12:10am

 

room temp: 25

 

glass top: 41c

metal case: 39c

psu: 40c

 

good night

 

40C PSU is really not that bad imo, my Schiit Asgard constantly is at about that temperature but than again it is a different amp. 

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post #25 of 31
2/15/13 at 11:28am

@alwaysec & Dogmatrix: most excellent, thank-you for measurement data; especially appreciate the tube temperatures! Will provide additional when I receive my WA7.

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post #26 of 31
2/15/13 at 2:02pm

I use a small ir type it is very accurate at these temps.

The levels you have listed are really quite low for a tube amp and well within safe levels for electronic equipment.

Your slightly higher temps would be down to air flow differences I think.

Case temps around 80c would be cause for concern.

As far as the glass is concerned with slow heating you could safely go to near 200c.

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post #27 of 31
2/15/13 at 9:54pm

Relax buddy, just listen to the tube and enjoy the smooth lush sound!

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post #28 of 31
2/17/13 at 3:06am

My temps are around the same give or take a couple degrees, these are not hot temps at all- which is GREAT NEWS!!! It means you can just enjoy the amp now. 

 

Just goes to show we all have different ideas of "hot" and "warm". 

 

Awesome amp though, its still my favorite to date.

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post #29 of 31
2/17/13 at 5:14pm
Thread Starter 
Quote:
Originally Posted by Dogmatrix View Post

I use a small ir type it is very accurate at these temps.

The levels you have listed are really quite low for a tube amp and well within safe levels for electronic equipment.

Your slightly higher temps would be down to air flow differences I think.

Case temps around 80c would be cause for concern.

As far as the glass is concerned with slow heating you could safely go to near 200c.

i will order one of ir type too. never knew a thermometer could be very handy sometimes. i do feel sort of relieved now knowing that it is just around 40C and the glass and metal case are just warm but not burning hot like before. 

 

Quote:
Originally Posted by mrbigsby View Post

My temps are around the same give or take a couple degrees, these are not hot temps at all- which is GREAT NEWS!!! It means you can just enjoy the amp now. 

 

Just goes to show we all have different ideas of "hot" and "warm". 

 

Awesome amp though, its still my favorite to date.

 

yes, finally i can simply enjoy the music and dont need to worry about a burning unit. cheers.

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post #30 of 31
2/27/13 at 10:47am

Received my WA7. Thought I would add my initial observations:

 

Temperatures were measured with a Fluke 62 Max+. Maximum temperature degrees C scanned in given location noted.

 

Ambient:  19.2 deg C

 

 

Minutes    Supply   Case     Tube
     0          19.2      19.2      19.2
   20          25.0      21.3      62.5
   40          29.8      25.5      66.5
   60          32.3      28.1      69.6
   80          33.2      29.3      73.0
 100          35.5      31.9      73.3
 120          35.6      32.6      73.5
 180          36.9      34.7      74.4
 240          37.4      34.8      76.1
 
So far I have listened with both hifiman HE-500 and Beyerdynamic T90. Things are still changing as the stock Sovtek tubes settle in. Initial Impressions after 6 hrs:
 
Silent background
Solid bass with clarity, impressive transient capability
That tube magic midrange
Impressive clarity on the high frequencies
 
I was on the fence about selling the HE-500. They are competent but never really sparkled on my other amps (WA3+, V200, O2, DAC-1.) They seem to have come to life on the WA7. They stay while I listen longer and evaluate this combination.
 
As each to his own on their search for sonic utopia, I must say that if I was told I could only have the WA7 and the Beyer T90, I would indeed be happy to listen to my library, enjoying the music quite well. In fact the danger of this combination is losing oneself in the music and forgetting time. A reminder that my preferences and auditory canal resonances are such that given the Sennheiser HD600 and HD650 I would choose the HD600. YMMV.
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