It doesn't match the product but you are fine with that???Don't think so. We've no idea how they've generated that data - other than it doesn't match the product tested.
It doesn't match the product but you are fine with that???Don't think so. We've no idea how they've generated that data - other than it doesn't match the product tested.
Don't think so.
Not remotely. I was just pointing out that they are not measurements as they had been described.It doesn't match the product but you are fine with that???
6 db down is 100 watts and 9 db down is 70.7 watts if my math is correct.Probably -9dBFS (9DB down from full power?)
So 25W if full power is 200W?
Would be if volts, - but in power each 3dB is a halving (EDIT: or doubling if +3dB) of power.6 db down is 100 watts and 9 db down is 70.7 watts if my math is correct.
Page 6 according to specification:
THD + N <0.02% 8 Ω, 20 Hz-20 kHz, -9 dB
I was thinking voltage gain. Probably would have been easier for them to say 25 watts.....Would be if volts, - but in power each 3db is a halving of power.
DbVolt = 20log10 v1/v2
DbWatt = 10log10 p1/p2
Yes it would - like they did with all the other lines.I was thinking voltage gain. Probably would have been easier for them to say 25 watts.....
You obviously do not understand the concept of Quality Control. QC means testing every unit that leaves the factory against the published specification within a tolerance. As 127W measured against 300W published is in no way can be treated as within limit, the device should have failed QC there and then. However, it is proved with @amirm's tests that it is not the case. They sold a failed unit.Not remotely. I was just pointing out that they are not measurements as they had been described.
EDIT - in case it's not clear, I've not been exactly complimentary about this amp since @daniboun first started a thread about it. The test has not changed that. My intent was to suggest that a list of specifications doesn't mean that the manufacturer has actually measured a working device and got good results. It is not evidence that the device tested here was a broken version rather than the design itself being broken.
Yet you drew one. Based on my experience there is nothing broken in this amp.Insufficient data to draw either conclusion.
I am basing that on the beginning of your review where you talked about having difficulties getting the amp to function. Going back and forth between unbalanced and balanced inputs until it suddenly started working. Did I misunderstand?Yet you drew one. Based on my experience there is nothing broken in this amp.
We would think so yes, still defective products gets in the hands of customers once in a while.QC should be everywhere, it’s not as rigourous everywhere. That said, It was meant as a general statement replying to a comment on something I said. I am not saying I have reason to believe this is a review of a broken device. Also, just to clarify further, the shit happens joke was meant as a phonetic joke… There was nothing political in a east vs west assumtion…If you don't to QC you are not a manufacturer in the sense that we understand in the Western world. The Wild West happened a long time ago...
That all points to potential design issue especially when we are talking about a class D amp and switching amplifier. There is a slight chance it is also triggering issue in Audio Precision with noise but again, neither one of these points to a broken amplifier.I am basing that on the beginning of your review where you talked about having difficulties getting the amp to function.
Power supplies seem to be the limiting factor with these amps. Would you retest if they send another?That all points to potential design issue especially when we are talking about a class D amp and switching amplifier. There is a slight chance it is also triggering issue in Audio Precision with noise but again, neither one of these points to a broken amplifier.
When something breaks, it stops working, it creates noise, high distortion, etc. In this case, we have two independent channels both doing the same thing so that rules out manufacturing of that subsystem. Maybe the power supply is producing lower voltage or current but is hard to make a case of faulty manufacturing there.
So while anything is possible, the odds are hugely against this being a manufacturing fault.
The PSU is integral. If there is an issue with it then there is an issue with the amplifier. Do we expect @amirm to repair units that he tests?Power supplies seem to be the limiting factor with these amps. Would you retest if they send another?
I already answer this. No. The next step is them running measurements like I do. If that disputes what I found, then we can discuss next steps.Power supplies seem to be the limiting factor with these amps. Would you retest if they send another?
Agreed. I was asking a rhetorical question.I already answer this. No. The next step is them running measurements like I do. If that disputes what I found, then we can discuss next steps.
No, that has not been the case. That requires tooling up for a entirely different operation and a different space to do it in.The PSU is integral. If there is an issue with it then there is an issue with the amplifier. Do we expect @amirm to repair units that he tests?
I missed your answer early on - sorry about posting. Had I understood it was settled would not have posted anything.I already answer this. No. The next step is them running measurements like I do. If that disputes what I found, then we can discuss next steps.
Power supplies seem to be the limiting factor with these amps. Would you retest if they send another?