Those voltage drops indicate 125mA & 129mA output stage bias if with 10R R10s or 104 & 107.5mA if with 12R R10s. Very close bias matching considering Mosfets and resistors tolerances. Offset behavior looks good.
Not with output shorted, with input shorted I believe you meant for offset adj. Check offset again when the volume pot will be installed. At 12 o' clock position on open input for a final pass/adj with the op-amp in place.
Not with output shorted, with input shorted I believe you meant for offset adj. Check offset again when the volume pot will be installed. At 12 o' clock position on open input for a final pass/adj with the op-amp in place.
Such champion measuring amps achieve fantastic SNR figures by exploiting low own voltage gain as well. This can be a subdued dynamics trap when on medium sensitivity speakers if not with high output XLR connected (doubling the signal voltage) digital sources. I suggest around 20dB power amp voltage gain for single ended signal if digital source only or around 25dB for phonographic source in your case with the Totem Hawk loudspeakers. That's on top of your DCG3 9.54dB line gain (x3). A well proportioned system voltage gain structure is key. Not too sleepy not too noisy.I may try another power amp in the near future. I am thinking of giving a try to purifi. Any suggestions are welcome.
I have a problem on the negative rail of my DCSTB which worked fine until now.
Could anyone help me determine which component I need to change?
My measurements (positive rail OK, negative rail NOK) :
+Vi: 28 V
+V0: 13,8 V
+Dref: 14,4 V
-Vi: 27,2 V
-V0: 27,8 V
-DRef: -28V
Is the bar graph out of service?
In the photo you can see that the LEDs are highlighted.
Thank you.
Could anyone help me determine which component I need to change?
My measurements (positive rail OK, negative rail NOK) :
+Vi: 28 V
+V0: 13,8 V
+Dref: 14,4 V
-Vi: 27,2 V
-V0: 27,8 V
-DRef: -28V
Is the bar graph out of service?
In the photo you can see that the LEDs are highlighted.
Thank you.
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