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Class D Switching Power Amplifiers and Power D/A conversion

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Old 18th March 2014, 10:11 AM   #7461
Julf is offline Julf  Europe
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Quote:
Originally Posted by Studio Au View Post
This is peak power, I wonder how much it draws, normal listening levels?
They are pretty efficient, so not much more than the output power. But it is the peak current capability / internal resistance that is more important.

Quote:
Merrill have one planned...
And what is the benefit supposed to be?
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Old 18th March 2014, 10:14 AM   #7462
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Less noise, on an amp thats noise can barely be measured...

Just curious as Li-ion batteries become more and more efficient, and with reduced costs, whether there is a point, when hi-end hi-fi power supplies will cost more noise free clean power of DC.
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Old 18th March 2014, 10:43 AM   #7463
ChrisPa is offline ChrisPa  United Kingdom
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The quiescent currents and efficiencies are stated in the data sheets/manuals
It will draw as much power as is demanded by the speaker efficiency and the volume set by the user....
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Old 18th March 2014, 11:39 AM   #7464
Julf is offline Julf  Europe
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Quote:
Originally Posted by Studio Au View Post
Less noise, on an amp thats noise can barely be measured...
Indeed - and how much of that noise is PS-related?
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Old 28th March 2014, 09:32 PM   #7465
jama is offline jama  Spain
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Default It is sad for me

It is sad for me to have get rid of my ncore, but it is necessary for me. I have wires and packaging original.
Only mounted once and practically unused.
Is anyone interested?.
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File Type: jpg ncore.jpg (173.2 KB, 415 views)
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Old 29th March 2014, 12:12 PM   #7466
Omholt is offline Omholt  Norway
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Is there a difference between a T5AL and a T5AH fuse? It says on thing in the manual and the other on the SMPS600 itself.
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Old 29th March 2014, 03:49 PM   #7467
ds23man is offline ds23man  Netherlands
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Quote:
Originally Posted by Omholt View Post
Is there a difference between a T5AL and a T5AH fuse? It says on thing in the manual and the other on the SMPS600 itself.
Did you blow them?
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Old 29th March 2014, 10:26 PM   #7468
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I am planning on trying out active crossover with my ncores, for the fun of it I just bought an dbx driverack 260 to be used as crossover.
Is it safe to connect ncore directly to a tweeter or compression driver? Or should the switching frequency be removed with some passive low-pass filter?
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Old 30th March 2014, 05:27 PM   #7469
Julf is offline Julf  Europe
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Originally Posted by Rajapruk View Post
Is it safe to connect ncore directly to a tweeter or compression driver?
Yes.
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Old 30th March 2014, 06:23 PM   #7470
OllBoll is offline OllBoll  Sweden
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Quote:
Originally Posted by Rajapruk View Post
Is it safe to connect ncore directly to a tweeter or compression driver?
Yes it's technically safe, but if your source outputs DC then bye bye compression driver. I would use a large DC blocking cap in series with the compression driver anyway, it's such a cheap way to protect against mistakes.
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