Lars Clausen said:
Lars, any development in this respect ? I don't see anything new on your site jet...
Kind regards, Eric.
Lars Clausen said:
Lars, thanks for your reply, any hit when that will be ? and can you help me out with my previous questions :
- Why two different types of power supply boards (10.000 versus 15.0000) ? is there any sonic difference or is it all about speaker-load resistance?
- For the snubber's/caps over the bridge, what is your point of view in respect to the best musical quality ?
Regards, Eric.
Lars Clausen said:
What is the ETA on the Softstart that you will be selling?
Will the quality of the new support products be as high as the modules and PSU? Could we get a rough estimate of the price of the Softstart?
Regards,
Christian
Hello,
I've the possibility to have some caps 10000µF 63V with a very low ESR @20°C 100HZ of 5mohm.
For the moment i've got the 15000 µF nippon Chemicon.
They are enormous: 77*144mm
, so I can only put 2 in each mono amp case. IF the µF decrease from 15000µF to 10000µF, the ESR will be better.
Could it be better to replace the 15000µF with these 10000µF low ESR?
I've the possibility to have some caps 10000µF 63V with a very low ESR @20°C 100HZ of 5mohm.
For the moment i've got the 15000 µF nippon Chemicon.
They are enormous: 77*144mm
, so I can only put 2 in each mono amp case. IF the µF decrease from 15000µF to 10000µF, the ESR will be better.Could it be better to replace the 15000µF with these 10000µF low ESR?
Neutrality: As a reply to your question, there will be three different versions of mains accessories to the NewClassD modules:
1..Soft Start (Specially optimized for NewClassD) €36
2..DC filter with essential RFI/O stopper €29
3..Combination of the two, on one board €49
edge540: Whether the low ESR caps have any meaning, depends on the use of short and heavy duty wires between modules and power supply.
Best regards
Lars C
1..Soft Start (Specially optimized for NewClassD) €36
2..DC filter with essential RFI/O stopper €29
3..Combination of the two, on one board €49
edge540: Whether the low ESR caps have any meaning, depends on the use of short and heavy duty wires between modules and power supply.
Best regards
Lars C
Lars Clausen said:
Thanks for the reply, it sounds good. 😎
Cheaper than I expected, especially the third option with soft start and DC filter on one board sounds like a good thing to get.
Regards,
Christian
Maybe I'll go for one of those combos, too. I've had to wait so long to get my amps that I can wait for that one too 😉
Hello,
I'm building the Vgate supply with external transfo.
I want to be sure:
The (-) of the Vgate supply should be connected to the V- and not to the GND ?
I'm building the Vgate supply with external transfo.
I want to be sure:
The (-) of the Vgate supply should be connected to the V- and not to the GND ?
Thank's Lars 😉
What is the function of the 100µF chemical caps?
I've replaced these with Black gate Fk i'd in stock. The BG are yet news but i noticed more micro details and an improvement in highs.
Because they are bigger, they are putting on the other side of the PCB.
So, it was very hard to desolve the originals because of the *#!§
lead free solve. And between one of the caps, there is a surface mount component. Be careful not to destry it!
What is the function of the 100µF chemical caps?
I've replaced these with Black gate Fk i'd in stock. The BG are yet news but i noticed more micro details and an improvement in highs.
Because they are bigger, they are putting on the other side of the PCB.
So, it was very hard to desolve the originals because of the *#!§
lead free solve. And between one of the caps, there is a surface mount component. Be careful not to destry it!Lars, how long will we have to wait for those new products?
If we could buy them by mid january as the latest it would be great.
If we could buy them by mid january as the latest it would be great.
Neutrality: I think that we can start shipping out by mid january.
There seems to be a new components scarcity coming on, you can't get even the most basic components, like resistors and capacitors. the lead times are up to 6 months right now. This situation does usually occur every 7-8 years, and the electronics industry always has some kind of excuse ready. I.E. the plastic factory for micro chips in japan has burned, or China is suddenly consuming 3 times more components, than usual, and the suppliers can't keep up.
My suspicion is that it's a creative way of flushing out the stocks, and subsequently pumping the prices up, so the components suppliers can make more profit.
There seems to be a new components scarcity coming on, you can't get even the most basic components, like resistors and capacitors. the lead times are up to 6 months right now. This situation does usually occur every 7-8 years, and the electronics industry always has some kind of excuse ready. I.E. the plastic factory for micro chips in japan has burned, or China is suddenly consuming 3 times more components, than usual, and the suppliers can't keep up.
My suspicion is that it's a creative way of flushing out the stocks, and subsequently pumping the prices up, so the components suppliers can make more profit.
How big will the filter/softstart combo be? Gotta consider what space I have in my case.
Do you have any good pictures of the finished unit, not the hand soldered one? And do any of you lucky owners have any pictures of your builds?
A final thing: Would it be possible to decrease gain in some way? 0.9V to full power isn't much...
Do you have any good pictures of the finished unit, not the hand soldered one? And do any of you lucky owners have any pictures of your builds?
A final thing: Would it be possible to decrease gain in some way? 0.9V to full power isn't much...
novec said:
I've put a 11 Kohm resistor at the input and the sensibilty is compatible with my tube préamp.
Not a bad idea, but I was thinking more about reconfiguring the opamp or something. But the easier approach is often the best...
Lars Clausen said:
Hi Lars
I'm in for a complete dual-mono set (2xncd1, 2xPS15.000/80, 2xsoftstart/filter combo) 🙂 !!!!
- But does your previous remark means your out of business for a couple of months ???
- How is progress on the LM4562 ? Should'nt I be waiting for for your tests ?
Regards, Eric.
No, luckily we have bought stock for a period of at least 6 months. So no problems on the existing products. However when making new products, sometimes you have to use a lot of time on locating the right parts, and buy them all over the world, where they can be found.
first impressions of NCD sound - at last
So, finally my NCD is fully assembled, and has been wired up to "real" speakers. Sorry it took such a long time (well more than a few weeks anyways), but that's life when you're busy at work, travelling a lot etc. etc., just hard to find time for diy audio :-(
Anyways, my first impressions of the sound are that it's very clean and dynamic. Detailed and well-balanced, I haven't noticed any harshness at all. Bass sounds deep, tight and well-controlled.
Further comments on the sound itself will have to wait until I finish the major rebuild of my preamp, so that I can use something other than my MP3 player as a source... I'm looking forward to listening to CD's though my NCD!!!
A couple of other observations: The "speaker on" click is audible, but nothing offensive (although it would be nice to do away with it completely).
With my ear very close to the tweeters, there is a some hiss, pretty similar to what my class AB amp produced, and not noticable when more than ~30cm away. My speakers are 88dB 1W/1m, and there is quite a bit of ambient noise always present in my apartment... so that may be why I'm not bothered by the hiss... but honestly I can't imagine it being a problem for anyone.
/cdl
KLe said:
So, finally my NCD is fully assembled, and has been wired up to "real" speakers. Sorry it took such a long time (well more than a few weeks anyways), but that's life when you're busy at work, travelling a lot etc. etc., just hard to find time for diy audio :-(
Anyways, my first impressions of the sound are that it's very clean and dynamic. Detailed and well-balanced, I haven't noticed any harshness at all. Bass sounds deep, tight and well-controlled.
Further comments on the sound itself will have to wait until I finish the major rebuild of my preamp, so that I can use something other than my MP3 player as a source... I'm looking forward to listening to CD's though my NCD!!!
A couple of other observations: The "speaker on" click is audible, but nothing offensive (although it would be nice to do away with it completely).
With my ear very close to the tweeters, there is a some hiss, pretty similar to what my class AB amp produced, and not noticable when more than ~30cm away. My speakers are 88dB 1W/1m, and there is quite a bit of ambient noise always present in my apartment... so that may be why I'm not bothered by the hiss... but honestly I can't imagine it being a problem for anyone.
/cdl
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