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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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In Reply to: NAD 7020 mods? posted by bjamesw on January 15, 2006 at 19:07:40:
Change the volume pot for a good unit like the alps blue. I swapped out the vol pot of a 3020 for a conductive plastic type from bournes. The result was that the archetypal warm laid back sound disappeared replaced with a full fast clean dynamic one. This was a complete suprise as I had no idea that the vol pot was going to have such a huge influance on the sound.Look at the signal input the sockets are particularly poor on the 3020. Also signal tracks on the pcb are not ideal. I cut these taking the signal straight from inputs to the front controls via good quality cable[ptfe silver plated copper] with good results. Look at psu cap at the age the unit is these will mostly have dried out replace with good quality ones and up the cappacitance by no more than 20% but bypass the units with values of 10% ie if a cap has a value of 1000uf use a 100uf followed by 10uf and a 1uf [total increase will be 111uf]. I often miss out the mid value [10uf] as it seems to have the least effect. The theory is that smaller caps will react quicker to charging and the signal applied. The consequence is to improve the leading edges of the music as the amp reacts quicker to transients in the signal.
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Follow Ups
- Re: NAD 7020 mods? - zanash 23:25:12 01/15/06 (1)
- Re: NAD 7020 mods? - Wally 01:11:10 01/16/06 (0)
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