Let's stop calling Class D amplifiers "efficient" when they are not.

[IAtaman]

Maybe there can be new speakers that can mine bitcoin

I think the point is not what the speakers can do for you, but what can you do for the speakers.

 

[MarnixM]

But none of that changes the fact that the significant heat producing internal components I have spoken of, have no way to keep themselves and the surrounding components cool enough to allow a long and happy life in so many of the hamfisted builds out there.

Restorer, I really like to see your comment on the new AP300-S250NC in a new housing from Audiophonics.

AUDIOPHONICS AP300-S250NCX Power Amplifier NcoreX NCx252MP

The Audiophonics AP300-S250NCX is a stereo amplifier based on a Hypex NcoreX NCx252MP amplifier module. It is ideal for providing a significant power reserve (2x250W @ 4Ω) without sacrificing sound reproduction quality.

www.audiophonics.fr

 

[audio_tony]

Restorer, I really like to see your comment on the new AP300-S250NC in a new housing from Audiophonics.

AUDIOPHONICS AP300-S250NCX Power Amplifier NcoreX NCx252MP

The Audiophonics AP300-S250NCX is a stereo amplifier based on a Hypex NcoreX NCx252MP amplifier module. It is ideal for providing a significant power reserve (2x250W @ 4Ω) without sacrificing sound reproduction quality.

www.audiophonics.fr

That looks very tidy with some decent ventialtion.

But it's all on one board, so if the PSU self destructs (as in burns) you have to replace the amp board too?

It reminds me of those all in one computers, with the PC motherboard integrated into the monitor. Monitor fails, PC junk. PC fails, monitor junk.

You know it makes sense!

 

[Redwine]

Restorer, I really like to see your comment on the new AP300-S250NC in a new housing from Audiophonics.

AUDIOPHONICS AP300-S250NCX Power Amplifier NcoreX NCx252MP

The Audiophonics AP300-S250NCX is a stereo amplifier based on a Hypex NcoreX NCx252MP amplifier module. It is ideal for providing a significant power reserve (2x250W @ 4Ω) without sacrificing sound reproduction quality.

www.audiophonics.fr

Looks interesting but no info about its current capacity?

 

[fpitas]

But the high-power oscillators for air and space kW transmitter LO's were often class C to save power

Well, there you go. The oscillators I work with are usually fairly tiny and very low phase noise.

 

[JoetheLion]

My Buckeye NC252MP idles at a whole 15W.

I cut the power to it completely overnight.

I own a NAD M10. BluOS Support has written:

"Just a reminder BluOS Players are not designed to be turned on and off repeatedly - our recommendation is to leave these smart devices always on and always ready. They are designed to enter a power save mode after 15 minutes of idle consuming less than 3W as required by EU law. (...) Repeatedly powering the devices on and off will age your PSU as well."

Right or wrong?

 

[KMM]

Heat cycles create mechanical stress on the equipment. Running it 24/7 creates heat stress. You pick

 

[Deleted member 48726]

I own a NAD M10. BluOS Support has written:

"Just a reminder BluOS Players are not designed to be turned on and off repeatedly - our recommendation is to leave these smart devices always on and always ready. They are designed to enter a power save mode after 15 minutes of idle consuming less than 3W as required by EU law. (...) Repeatedly powering the devices on and off will age your PSU as well."

Right or wrong?

Since they wrote it it's probably right. But that's also probably because they saved too much money on their PSU and it's probably shit.

 

[Joe Smith]

Restorer, I really like to see your comment on the new AP300-S250NC in a new housing from Audiophonics.

AUDIOPHONICS AP300-S250NCX Power Amplifier NcoreX NCx252MP

The Audiophonics AP300-S250NCX is a stereo amplifier based on a Hypex NcoreX NCx252MP amplifier module. It is ideal for providing a significant power reserve (2x250W @ 4Ω) without sacrificing sound reproduction quality.

www.audiophonics.fr

Re their warning about no DC from sources - would normal-type sources (CD, DAC, streamer) typically present any DC to the amp?

 

[voodooless]

I own a NAD M10. BluOS Support has written:

"Just a reminder BluOS Players are not designed to be turned on and off repeatedly - our recommendation is to leave these smart devices always on and always ready. They are designed to enter a power save mode after 15 minutes of idle consuming less than 3W as required by EU law. (...) Repeatedly powering the devices on and off will age your PSU as well."

Right or wrong?

I’m pretty sure the power save mode will power down the amps and main PSU. The 3W is only for a small backup power supply to keep some of the electronics running so it can wake up from wifi or remote control.

 

[tmtomh]

Isn't this one of those ASR threads where everyone is citing the potential pros and cons - heat stress, switch wear, power consumption, PSU wear, and so on - but no one knows how much or how little such pros and cons will actually impact the longevity of any given unit, and so the discussion will just go around and around?

 

[Old Listener]

Correction pretty much everything in audio benefits from cryogenic treatment. I would add supposedly.

Do audiophiles benefit from cryogenic treatment? I often think "cool it" when I read rants by audiophiles.

 

[Old Listener]

John appears to be casting himself in the role of Jason and the dragons' teeth - he throws out the comment, then stands back to watch...

Jason​

Similarly, Jason was challenged by King Aeëtes of Colchis to sow dragon's teeth from Athena in order to obtain the Golden Fleece. Medea, Aeëtes' daughter, advised Jason to throw a stone between the warriors that sprang from the earth. The warriors started fighting and killing each other, leaving no survivor but Jason.

(wikipedia)

Who's being fleeced?

 

[Short38]

Board the Argo. Pick up an oar and row to the land of audio perfection.

 

[DonR]

Isn't this one of those ASR threads where everyone is citing the potential pros and cons - heat stress, switch wear, power consumption, PSU wear, and so on - but no one knows how much or how little such pros and cons will actually impact the longevity of any given unit, and so the discussion will just go around and around?

Possibly. In the case of the NAD M10 we can discount heat stress as the sub-3W stand-by will not add significant heat to the unit so it will suffer the same heat stress as if it were completely turned off. If well designed, modern electronics should auto power down anyhow and be designed for sufficient longevity. But let's be real, nobody will hang on to any internet-connected, software-filled device as long as a receiver from the 70's. From what I have seen, the biggest problem is in design rather than in component quality in modern gear.

 

[pablolie]

Board the Argo. Pick up an oar and row to the land of audio perfection.

"Destination Unknown"?

 

[maverickronin]

"Just a reminder BluOS Players are not designed to be turned on and off repeatedly - our recommendation is to leave these smart devices always on and always ready. They are designed to enter a power save mode after 15 minutes of idle consuming less than 3W as required by EU law. (...) Repeatedly powering the devices on and off will age your PSU as well."

Right or wrong?

Either the support person is talking out of their ass or the inmates are running the asylum over at NAD...

 

[DonR]

Either the support person is talking out of their ass or the inmates are running the asylum over at NAD...

Have to feed the myths somehow.

 

[hearone]

I don't think the electrons are a problem they are quite mercurial. But the lattice atoms become quite jittery as a result of all these dancing electrons. They probably need a cryogenic treatment now and then.

I wonder if those "electrons" are sujejct to the "observer effect" somehow.. Maybe if one don't stare at the watt meter, they calm down a little. But it really hard to observe- such is physics. LOL

 

[Deleted member 48726]

That looks very tidy with some decent ventialtion.

But it's all on one board, so if the PSU self destructs (as in burns) you have to replace the amp board too?

It reminds me of those all in one computers, with the PC motherboard integrated into the monitor. Monitor fails, PC junk. PC fails, monitor junk.

You know it makes sense!

Oh yeah. Bad for longevity indeed! Just like this monstrosity from Crown (XTi).