mpw, I just couldnât say what this might be. Have you checked all the usual things like speaker cable shorts etc⌠What are the speakers?
Make sure you are using the line out and not the headphone output - the volume control shouldnât be needed on the DAC. If you output from a headphone out then the level may be just too high for the NAIT.
Also try switching between filters. I donât know whether the DAC filters very high frequencies from DSD - if not this may be causing the amp distress.
Beyond that, it could be a good idea to contact Naim support.
If the unit is showing no signs of overheating & you arenât running some really odd cables, this fault is usually caused by a faulty protection opto-coupler (common to S/Nait & Nait5i*).
Itâs a 16 pin IC that sits in the centre of the amp stage. Easier to replace in a N5i than SN2, but not for the faint hearted.
A competent dealer should be able to sort it for you.
I suspect your Nait will have a white protection opto-coupler fitted, if you need to source a replacement part outside of Naim"s dealership network, Naim are currently using a black component manufactured by Vishay (CNY74-4).
Looks poor to me. Iâm no whizz with the soldering iron but Iâve done mine and they look much better than that. The wires should sit inside the slot and solder flowed in.
The trick is to make a wooden buck from a plank of wood - just drill a pair of holes to mimic the speaker sockets, which will hold the plugs for you. Then cut the cable and form the ends with the help of some pliers to fit in the slot of the plug. Use some kind of brace or strap to hold the cable in place, allowing you freedom to solder without trying to hold things in place ta the same time. Use a high powered soldering iron and heat the plug. Once done allow to cool and then trim off the ends and anything will impair the free movement of the metal plug within the plastic housing.
Hi bob, I would say that even the soldering in that HiFi GEAR picture is below par. I have experimented myself over the years (mainly from running a active system) and was or have been amazed at how much the sound can change with a solder joint that isnât âquiteâ right. The top picture in Richardâs post is how it should be done. If I canât get mine to a very similar quality as that, I simply start again until I do. It can or does take quite some practice. This may sound silly, but I have generally found that it will sound as good as it looks.
The main thing is that the wires are formed to fit in the slot and that the plugs are hot enough (100w iron) to allow the solder to flow into the slots rather than sit as âpasteâ on top. Using a wooden jig helps stop the heat conducting away.
Most peopleâs wonât be as neat as Peterâs but should be fine.
