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Old 16th May 2012, 06:10 PM   #4001
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As I said earlier, I did read those sections but didn't see what I was looking for, which was an explicit statement about speaker protection.

Reading it again I see that such can indeed be concluded.

Interesting revelation about the hazards of speaker protection relays, given the millions of them out there.

Thanks

Quote:
Originally Posted by Bruno Putzeys View Post
This question is answered once every 100 pages of this thread or so. The gist of it is, as spelled out in sections 7.2 and 8.1 of the data sheet, use a supply that shuts down when pin 5 of the power connector is pulled low. This pin is pulled low when the NC400 finds the speaker output stuck at a high voltage.
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Old 16th May 2012, 06:20 PM   #4002
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Originally Posted by jtwrace View Post
Lets see if the SMPS is better . In 2 weeks we will try. I do not believe Bruno is God as the rest of you.
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Old 16th May 2012, 06:24 PM   #4003
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With bi-amping you could have a NC400 dedicated to the bass driver.
From my experience getting rid of the external crossover does wonders for true-ribbon Maggies.

I would think this is the best way to use two NC400 with true-ribbon Maggies, instead of bridging the two-amps and then going through a cross-over.

Quote:
Originally Posted by ghs View Post
Roger,
Nice speakers, but maggies with 85db sensitivity aks for more.
Considering to bridge Ncore's.
Do you or anyone else have experience with that?

Jerry
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Old 16th May 2012, 06:29 PM   #4004
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Default Sensible...

Quote:
Originally Posted by Erlend Sæterdal View Post
Lets see if the SMPS is better . In 2 weeks we will try. I do not believe Bruno is God as the rest of you.
Unfortunately, if the test is solely based on subjective listening, it will be easy for anyone to conclude that the linear supply used is coloring the sound, and the effect is found to be euphonic in nature (whether that is true or not).
Also, there are many ways to design and build a linear supply, and one test with one supply may not be definitive.
It would be very interesting if someone who has the capability could measure the SMPS 600 under realistic load conditions, and then do the same for a well built linear supply. I would love to see how the SMPS 600 tracks varying load needs, and what its noise spectrum looks like under a real world load, and then be able to compare that with a linear supply under the same conditions.

In any case Erlend, I look forward to hearing about what you think.
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Old 16th May 2012, 06:30 PM   #4005
Julf is offline Julf  Europe
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Quote:
Originally Posted by Erlend Sæterdal View Post
I do not believe Bruno is God as the rest of you.
We get that. I don't believe in gods anyway - facts are our friends. And the proof is in the pudding. Despite the fact that you have to be a Brit to like pudding.
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Old 16th May 2012, 06:49 PM   #4006
ds23man is offline ds23man  Netherlands
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Quote:
Originally Posted by noah katz View Post

Interesting revelation about the hazards of speaker protection relays, given the millions of them out there.

Thanks
That is why Peter Walker put this in his Quad 405 design:
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File Type: jpg AMP_405.jpg (26.6 KB, 435 views)
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Old 16th May 2012, 07:04 PM   #4007
Simtu is offline Simtu  England
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Quote:
Originally Posted by Jan-Peter View Post
If you order now, delivery is within two weeks. There is no DC tweaking necessary.
Are you sure?? I ordered mine end March for wk 18 delivery. I have now been put back twice without an explanation. Still hoping for a delivery this week but still no news. Wouldn't mind so much if Hypex didnt take a 100% upfront payment.
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Old 16th May 2012, 07:07 PM   #4008
Julf is offline Julf  Europe
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Originally Posted by ds23man View Post
That is why Peter Walker put this in his Quad 405 design:
Ah, a good old crowbar!
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Old 16th May 2012, 07:18 PM   #4009
jtwrace is offline jtwrace  United States
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Quote:
Originally Posted by Erlend Sæterdal View Post
Lets see if the SMPS is better . In 2 weeks we will try. I do not believe Bruno is God as the rest of you.

Subjective...no thanks.
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Old 16th May 2012, 07:19 PM   #4010
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Quote:
Originally Posted by Julf View Post
We get that. I don't believe in gods anyway - facts are our friends. And the proof is in the pudding. Despite the fact that you have to be a Brit to like pudding.
Mmmm I am Dutch and we like pudding too
Wouldn't be surprised when Bruno, who is half Dutch () likes pudding too.
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