Hypex Nilai500DIY Amplifier Review

[HoweSound]

How loud are the pops when turning this Nilai 500DIY amp on or off?
Did anyone measured it with a dB meter?

If you have higher sensitivity speakers (e.g. 92 dB) does the pops get louder compared to medium sensitivity speakers (e.g. 86 dB)?

No discernible pops from my DIY Nilai stereo. My speakers are reasonably sensitive, say 90 dB. I have usually been turning on the Nilai last, but , not in a premeditated way. - now I'll do it consciously.

 

[Robert-Hifi]

No discernible pops from my DIY Nilai stereo. My speakers are reasonably sensitive, say 90 dB. I have usually been turning on the Nilai last, but , not in a premeditated way. - now I'll do it consciously.

That seems to be the best practice. Turning on the Nilai last and turning it off first in the chain.
I think that minimizes the issue in the best possible way.

 

[Cougar]

I have been getting this same very minor pop (very faint) when the Nilai amps are turned on and off, my speakers are 4ohm 87db.. I know you can adjust the CM and DM pots but haven't got around to doing it. I will contact Hypex again. My DC Offset was a little on the high side when I first turn on my amps after completion of my Nilai bild. Measured 74mVdc on one and 41mVdc on the other. Hypex told it shouldn't have been like that since the modules are automated adjusted. But they told me which ones for what issues to adjust. I got mine DC Offset down to near 0mVdc.

I have been really enjoying these little amps and they sound really nice but take a long time to break-in before sounding their best.

 

[Julf]

I have been really enjoying these little amps and they sound really nice but take a long time to break-in before sounding their best.

Verified how?

 

[benh]

I have been really enjoying these little amps and they sound really nice but take a long time to break-in before sounding their best.

There's no such thing as 'break-in' of such a class D amp. The only thing time will do to those electronics is degrade them but if they aren't faulty to begin with, the time scale is years if not decades.

You probably just got used to it

 

[AndreaT]

One year and a few months of Nilai 500. Hours a day on good days. Never ever gets warm to the touch, even after playing Deep Purple recordings at > 100 dB peak, added one Arendal large sub to the two old REL. Mains Paradigm Studio 100 v.3. Source Weiss MAN-301 to DAC8 Stereo. No problems from the amp ever. No reason to upgrade.

 

[OldManMatt]

When I'm rocking out for hours my Nilai is barely warm to the touch.

If I forget to shut it down and it sits idle overnight it's pretty warm/hot in the morning. Big difference in temperature.

 

[Salt]

Same with my purify amp: if they don't have some work, they tent to warm up. So I just turn them off if not needed .

 

[OldManMatt]

Yep yep

 

[StigErik]

I've stacked two Nilai stereo amps on top of each other. They never get more than 10 degrees Celsius above room temperature.