Can such failures blow speakers?
- Rich
I'd say very unlikely. You blow your speakers when an output device fails and as a consequence feeds DC to your speakers provided that there is no protection circuitry.
Can such failures blow speakers?
- Rich
Can such failures blow speakers?
OK. Maybe a stupid question(s), but if it’s such a concern can’t you just replace the PS caps with a better quality/ higher temp capacity brand? Certainly cheaper than losing 50%+ sales value on the consignment. If Amir’s opened it up, is not the warranty void anyway? How hard would this be to do?Yes, I was discouraged enough by @amirm’s Performance and Teardown Reports that I finally just decided to sell the M28 immediately. I’ll take a ~$2,500 bath on that. I’ll count it as a good lesson regarding avoiding ”1.0” products. Entirely my fault.
Casey
Changing caps (probably) won't make it perform any better. So if the owner can't live with below 100dB SINAD, there is only one solution...OK. Maybe a stupid question(s), but if it’s such a concern can’t you just replace the PS caps with a better quality/ higher temp capacity brand? Certainly cheaper than losing 50%+ sales value on the consignment. If Amir’s opened it up, is not the warranty void anyway? How hard would this be to do?
I was thinking more of overall reliability concerns VS. performance improvements.Changing caps (probably) won't make it perform any better. So if the owner can't live with below 100dB SINAD, there is only one solution...
In some cases...ignorance is bliss...; ) It appears to be a fine amp with a few caveats, just like most other fine quality amps. I’m pretty sure you’ll get years of enjoyment from it. Not sure I could do what you did, shipping your M28 to Amir for testing and tear down. Thanks for making this review possible.Note that I did eventually allow myself to be convinced to keep the M28 once @amirm is done playing with it.
My misgivings are those of an engineer, not "having listened to it", etc. As an engineer it always pisses me off when I see other engineers do substandard work.
Casey
Would you advise preventive replacement of the capacitors of a new SMPS with high quality ones, John? For example in case of buying a new Hypex Class-D amplifier with accompanying SMPS?What you don't understand is when SMPS capacitors fail, they can and do take out everything before them and stuff downstream as well, often very spectacularly.
I think you miss the price comparison and that the NADs PSU is fully custom while Hypex PSUs are cheap and easily replaceable.So are we going to recap all the hypex amps, I don't think so.
I think you miss the price comparison and that the NADs PSU is fully custom while Hypex PSUs are cheap and easily replaceable.
So the question of recapping doesn't even come to mind with the Hypex PSUs but it does with the NAD, and that is not a good sign for this price honestly.
The device in the picture above isn't a cheap Hypex SMPS. It is their one of their mains powered Nc series amplifiers. There is no replacing the PS in one of these, it is a monolithic device.I think you miss the price comparison and that the NADs PSU is fully custom while Hypex PSUs are cheap and easily replaceable.
I think you missed my argument. The PSU in this device was specifically designed and manufactured for the M28 exclusively. You can only get this part through NAD service and as long as they want to provide that.sorry, I really don't follow. What does it mean "fully custom"?
I know that thats why i said exactly "Hypex PSUs" like the ones i mentioned earlier in case you missed it.The device in the picture above isn't a cheap Hypex SMPS.
You can call it whatever you want. I don’t mind a dying PS, it is easy to replace and not expensive. But I do mind loosing a complete amplifier because of a dying SMPS, and if replacing a few capacitors could prevent this I wouldn’t mind doing so. It is neither difficult nor expensive to do, and less far-reaching than modifying new cars. Which is what some of my friends are doing on a regular basis.This is beyond ridicolous.
You can’t be serious?Yes, I was discouraged enough by @amirm’s Performance and Teardown Reports that I finally just decided to sell the M28 immediately. I’ll take a ~$2,500 bath on that. I’ll count it as a good lesson regarding avoiding ”1.0” products. Entirely my fault.
Casey
If you don't want to understand thats fine...There is no single Hypex SPMS able to supply power to 7 NC500 modules
You can connect as many amps as you want to it but you are limited to 3000 Watt Output.The maximum number of modules which can be connected to the SMPS3k is limited by the output power of the SMPS. Please refer to the amplifier’s datasheet for more information.