Author Topic: Cool QSXM3  (Read 4620 times)

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Offline VesaK

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Cool QSXM3
« on: December 30, 2014, 06:36:35 PM »

When i first started RIAA, it did get quite warm. All four references on four Superregs and both buffers.
But now after on week or so when it has been on all the time, they all just slightly warm. Sound is ok

Tried to figure out why this cooling of things happen and only thing came to my min was that i had done something which made it drop out of class A or cooling is result of burn in.

So i measured output on voltage reference. When opamp is on place it shows 0, when opamp is out, it measures about -15.

Did also measure the current opamp takes. It is just below 9mA on negative and a bit over 12mA on positive.

Superregs are coupled for buffers and opamps separately, so they should not get equally warm, i presume.

Is all ok and should it run this cool? How do i know?

Regards,
Vesa

Offline peranders

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Re: Cool QSXM3
« Reply #1 on: December 31, 2014, 09:04:53 AM »
I can't really say what the problem is but it works  :-D
/Per-Anders Sjöström, owner of this forum

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Offline VesaK

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Re: Cool QSXM3
« Reply #2 on: January 01, 2015, 08:17:18 AM »
Yes, and actually VERY well :)

Now with overkill PS: 4x SSR01/2 superregs + 4x Tentlabs Shunt regulators.

/V



« Last Edit: January 24, 2015, 08:26:29 PM by VesaK »

Offline peranders

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Re: Cool QSXM3
« Reply #3 on: March 16, 2015, 04:26:43 PM »
 ... mm,  you can't fail...  :-D
/Per-Anders Sjöström, owner of this forum

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