Mikas
pfm Member
For me that's a bit scary. My own original mdac is already a little too bright. Your unit must have been very 'dark' indeed.
Michael
MDAC First Listen (part XXV)
- Thread starter ChrisPa
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Michael
Well, it's mostly thunderbird and firefox that are - for no apparent reason - overusing the CPU. Add bad cooling system design inside the laptop (Thinkpad X220) and known overheating issues. Then add extremely f*cked up design of the docking station / minidock in regard to X220 (upper left - yes, the fan blows right to a "wall", 1-2mm space, what comes through the holes is forced to turn 90deg right away and exit via a tiny hole on the top). That's my recipe for 95C CPU (yes, core) temp.
Adding an external 120mm PC fan helped somewhat, manually disabling Intel Turbo Boost (yeah, linux kernel 3.9 can do that) helped even more. Now it doesn't go above 70C or so.
That depends on how hot the air is. It might make the MDAC feel warmer (heating larger surface area), but the actual temperature might be lower, due to the air still being cooler than the MDAC.
Richard Kimber
pfm Member
JohnW
pfm member
On MDAC2 there will be an option for a separate 4W XLR jack on the rear panel.
JohnW
pfm member
You just have to stop playing Diablo with it.
95C is too much (even if those are core temperatures). It wouldn't last long, you're aware of that probability, right?
To get on topic, my Mdac really gets hot, but only when I'm using it. Maybe because is suffers also from exhaust from the PS3 sitting next to it.
When idle, it's just mildly warm.
Michael
I've posted before - here is a thermal image of the MDAC top view at an ambient room temp of about 24 Deg...
https://dl.dropboxusercontent.com/u/86116171/MDAC Thermal 15.6V.jpg
The hottest the case gets is about 38Deg, the heatsinks can been seen though the vent holes at about 43 DegC...
The unit had been left powered for a few days...
Raw DC = 15.6V
Mikas
pfm Member
Ops, I guess I've missed it. Nice image. Thanks.
But was it supposed to be the same being idle, or in use? Class A usually implies that, but I found significant differences between the two 'states'.
Michael
sam_cat
C'est Crounchifique!
Steven Toy
Accuphase newbie
It gets bloody hot in here with valve pre and power amps and DAC all working in class A.
JohnW
pfm member
Ops, I guess I've missed it. Nice image. Thanks.
But was it supposed to be the same being idle, or in use? Class A usually implies that, but I found significant differences between the two 'states'.
Michael
There very little difference between ideal and operation (maybe 10mA to 20mA) - so the heat difference must be due to the PS3...
Temp reading just above my case is 45 C
JohnW
pfm member
45 Deg's nothing
Unless going down a hill....
JohnW
pfm member
... with loads of MDAC packages in the back.
There, some food for nightmares.
Richard Kimber
pfm Member
... with loads of MDAC packages in the back.
There, some food for nightmares.
As long as mine's not there ...
- Richard.
Is that a KS200 I have a KST100 sat in a box with a fault, love KrellsHot, i'll give you hot....
98lbs of Class A room heater.
Mikas
pfm Member
Just tested it. I've took it off the shelve, put it on the floor and it didn't warmed noticeably during 1 hour of active use. A big difference from my typical previous experiences. So I guess it must be the heat from the PS3 that is preventing the mdac to cool down effectively.
Michael
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