Positivevibrations
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Based on some builds I’ve seen on the market they don’t check much. Unless this is a very recent policy.
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BUCKEYEAMPS Hypex NCx500 Amplifier 2channel Review
- Thread starter thin bLue
- Start date
It is part of their business model. Need customers to earn their living. Also the administrations should also take care of what is put on the market and by whom.
Sure! What is the point in sticking to the 1/2 rule valid for sine waves?
Positivevibrations
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Ya but if an OEM client implements their products improperly, a failure results from it, and the general consensus was Hypex designed a flawed product, that’s not very good for business.
If you build an electronic device, you must apply for conformance before selling. No free riders are admitted, at least on paper...
Sokel
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A lot of this modules are pre conformed,they state it on their spreadsheet as well pointing out that this reduces drastically any such delays.
Positivevibrations
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How many amp builders on this forum send their amps in to get UL or ETL certified before going out for sale on the market? All the big companies do. But these little guys building in their basement get a pass. Not a legal pass of course. Just a pass on audio forums and with most audio reviewers. And no CE does not mean anything in North America.
DS23MAN
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Positivevibrations
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I’m talking about verifying if their products are being properly and safely implemented before hitting the consumer market. That would be a great step to take to preserve their reputation.
Do you think that would be a measure that would be bad for both Hypex and the end consumer?
This will never happen, as a business model it does not make any sense. You have to think about money, always, it is not about naive wishes.
Positivevibrations
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Do you think that in this case there is something wrong with the product?
I dont... The testing as been wrong, nothing more.
Yes one more thing, the specs as presented by the builder.
Positivevibrations
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No I don’t think there was anything wrong with the power supply or the test procedure. If 2 supplies were used instead of 1 this would have never happened. I could have predicted this outcome before even reading this review. In fact I was just discussing this very topic a few weeks ago on this forum:
“It’s the amp modules that have the limiters. In a proper Ncore or Purifi amp build you use power supply’s at least 200w more powerful than what the amp modules draw”
Looks like Class D is the only option for ultra clean, high power amplification
Oh yeah? I’ve been running my steam engine (B&K 202) for over 30 years now. How long did those quadruple zero Topping amps last, 30 hours? I hear of Hypex NC amps crapping out alot as well. I guess those “Ferraris” are about as reliable as a Ferrari. I've not seen a lot of reports of NAD...
www.audiosciencereview.com
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Yes there must have been something wrong with the power supply not shutting down. In our build the power supply shuts down immediately in such scenario. And we use the same power supplies.No I don’t think there was anything wrong with the power supply or the test procedure. If 2 supplies were used instead of 1 this would have never happened. I could have predicted this outcome before even reading this review. In fact I was just discussing this very topic a few weeks ago on this forum:
“It’s the amp modules that have the limiters. In a proper Ncore or Purifi amp build you use power supply’s at least 200w more powerful than what the amp modules draw”
Looks like Class D is the only option for ultra clean, high power amplification
Oh yeah? I’ve been running my steam engine (B&K 202) for over 30 years now. How long did those quadruple zero Topping amps last, 30 hours? I hear of Hypex NC amps crapping out alot as well. I guess those “Ferraris” are about as reliable as a Ferrari. I've not seen a lot of reports of NAD...
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I don t agree. No need to build an home audio amp as a power plant. The testers should also consider this. 2 PSUs total overkill for this use case.No I don’t think there was anything wrong with the power supply or the test procedure. If 2 supplies were used instead of 1 this would have never happened. I could have predicted this outcome before even reading this review. In fact I was just discussing this very topic a few weeks ago on this forum:
“It’s the amp modules that have the limiters. In a proper Ncore or Purifi amp build you use power supply’s at least 200w more powerful than what the amp modules draw”
Looks like Class D is the only option for ultra clean, high power amplification
Oh yeah? I’ve been running my steam engine (B&K 202) for over 30 years now. How long did those quadruple zero Topping amps last, 30 hours? I hear of Hypex NC amps crapping out alot as well. I guess those “Ferraris” are about as reliable as a Ferrari. I've not seen a lot of reports of NAD...
ubiq
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Hi,
Thank you all for this thread. It brings a lot to the table.
As i was interested by this kind of amp, as a typical noob buyer, can someone confirm the following :
- Is it safer (not 100% safe, but safer) to have 2 monoblocs of NCx500 than a 2 channel when one wants to "push" the amp a little bit
- what about stereo Purifis (1ET400A) ? Same thing?
Cheers
Thank you all for this thread. It brings a lot to the table.
As i was interested by this kind of amp, as a typical noob buyer, can someone confirm the following :
- Is it safer (not 100% safe, but safer) to have 2 monoblocs of NCx500 than a 2 channel when one wants to "push" the amp a little bit
- what about stereo Purifis (1ET400A) ? Same thing?
Cheers
DS23MAN
Active Member
Do you think an OEM account is for lifetime?
restorer-john
Grand Contributor
Yes, the power supply used has short circuit protection (which is extreme OC) on the main rails.
Positivevibrations
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You don’t know how fast the power was applied to the load.
The bottom line is the amp current protection would have prevented this situation had the power supplies been rated at least 200w more than the module. And there’s no way in a million years that if I were an amp manufacturer I would have put an amp on the market using 2 NCx500 modules with 1 SMPS1200A700.
But I suppose it would be my ignorance that would have saved me in this case.
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