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Old 15th May 2012, 12:20 PM   #3991
Julf is offline Julf  Europe
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Quote:
Originally Posted by sherlockth View Post
Is anybody else still waiting for their wk18 delivery?
Well, I placed my order week 15, and still haven't gotten a shipping confirmation.
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Old 15th May 2012, 12:36 PM   #3992
antbom is offline antbom  Italy
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Quote:
Originally Posted by sherlockth View Post
Is anybody else still waiting for their wk18 delivery?

Also, can somebody tell me how to open the holes on the 10mm front aluminum plate? I want to open a 19mm hole for the power button, do I use a 19mm drill or a smaller one and work my way up to 19mm?
I received mine last thursday, but I placed the order on 27th february! Already assembled and working, but don't ask me about sound quality (I'm still experimenting).
About the holes, you get a much easier and precise work with a vertical drill (a €50 chinese one is enough) and the right drill bit like this:
http://www.audiophonics.fr/accessori...-c-37_481.html
I tried with a cheaper wood bit too http://www.pianetautensili.it/Public...cchialegno.jpg and it worked. It gets ruined easily, but you can sharpen it again with a file.

Last edited by antbom; 15th May 2012 at 12:38 PM.
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Old 15th May 2012, 12:37 PM   #3993
Ianmac is offline Ianmac  Scotland
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I ordered for delivery earlier this year but was deferred to wk18.
I have been told my order will be shipped next week.
Metalwork ready waiting

Patience
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Old 15th May 2012, 12:48 PM   #3994
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Quote:
Originally Posted by antbom View Post
I received mine last thursday, but I placed the order on 27th february!
Mmm lucky me. I ordered and paid them 6 days before (21st of February). I received my 5 NCore's on the 26th of March and enjoyed them in good working order already from the 1st of April.... I should already start thinking on upgrading my amps.
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Old 15th May 2012, 08:29 PM   #3995
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Jan-Peter,

Perhaps you could help with the below question, which as far as I know remains unanswered.

Thanks

Quote:
Originally Posted by noah katz View Post
Does the ncore have protection against output device failure, or should a speaker protection board with relays be added?

I don't see this spelled out on the hypex web site.
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Last edited by noah katz; 15th May 2012 at 08:33 PM.
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Old 15th May 2012, 09:14 PM   #3996
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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.

The SMPS600 has this function. If, for reasons of philosophy*, you want to build your own linear supply, add disconnect relays between it and the power amp and make them respond to this line.

DO NOT USE SPEAKER RELAYS. Speakers are inductive little buggers and will sustain an arc across the relay contact long enough for it to weld shut. Speaker relays CAN AND WILL FAIL at the exact moment that you need them.

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*Reasons of philosophy such as "not believing a switching supply sounds good and therefore concocting a linear contraption and then complaining about the result"
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Old 16th May 2012, 12:45 PM   #3997
jtwrace is offline jtwrace  United States
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Quote:
Originally Posted by Bruno Putzeys View Post
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*Reasons of philosophy such as "not believing a switching supply sounds good and therefore concocting a linear contraption and then complaining about the result"

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Old 16th May 2012, 01:01 PM   #3998
troystg is offline troystg  United States
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Location: In a dream... Please don't wake me.
Bruno is not only VERY smart but he is funny too...
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Old 16th May 2012, 01:09 PM   #3999
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Hi Sherlock, I have had very good results using a stepless pyramid drill, as used for automobile antennas, and using household spirit as ´drilling oil´. Use high speed and low pressure, and do it in small steps, and measure with the switch continually when you are working.File and sand smoothly afterwards.

Regards
Arthur.
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Old 16th May 2012, 01:38 PM   #4000
ChrisPa is offline ChrisPa  United Kingdom
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Quote:
Originally Posted by ArthurDK View Post
Hi Sherlock, I have had very good results using a stepless pyramid drill
I don't think that would work for a 10mm front plate
(I like pyramid drills too but on thinner sheet)

The 'tank cuttter'/'core drill' type of cutters suggested by antbom work well
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