NAD3020 preset

Leolabs · 14th June 2005, 02:26 AM

I know that there is a preset located at the input stage of the power amp section,is it for offset adjustment or something else?

cpemma · 14th June 2005, 07:16 PM

DC Offset alignment.

1. Warm up 5 minutes min.

2. Set volume at minimum.

3. Connect voltmeter across left speaker, 100-300mV DC scale, speaker positive to meter red.

4. Adjust VR5 (left) for meter zero.

5. Repeat for right channel (VR6)

VR5, 6 trimpots are 20k on my schematic.

14th June 2005, 02:26 AM	#1
Leolabs diyAudio Member Join Date: Dec 2004 Location: Bukit Mertajam	NAD3020 preset I know that there is a preset located at the input stage of the power amp section,is it for offset adjustment or something else?

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14th June 2005, 07:16 PM	#2
cpemma diyAudio Member Join Date: Jul 2003 Location: S Yorkshire OK	DC Offset alignment. 1. Warm up 5 minutes min. 2. Set volume at minimum. 3. Connect voltmeter across left speaker, 100-300mV DC scale, speaker positive to meter red. 4. Adjust VR5 (left) for meter zero. 5. Repeat for right channel (VR6) VR5, 6 trimpots are 20k on my schematic.

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