hypex ncore

[sherlockth]

Originally Posted by Audioschipper

Nice! But I still think you should twist your inner cables ( as mentioned in the datasheet)

Thanks, I will do that. Maybe that is the cause of some very low humming noise that I have.

[souldriver]

Hi
Finally i got my Ncore's and i just put the amp together....but....
I just got a little thiny fizzy sound. I really tried to connect everything as mentioned in the manual but something must be wrong and i could not found out what it is. Could somebody have a look on the pictures? (i tried the searchfunction but i did not found anything that could help me!)
Thanks a lot!


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[StigErik]

Do all the red LED's light up on the NC400 modules?

[waltzingbear]

Originally Posted by StigErik

Do all the red LED's light up on the NC400 modules?

you mean because he doesn't have the Nampon wires grounded?

the black wires that are floating in the pictures need to be attached to ground to take the amp out of standby mode, RTFM.

Also get all that extra AC cable out of there and off the SMPS heatsink. it however is not the problem you have right now. Never attach a piece of plastic to a heat sink, especially when that plastic is holding your AC!

Alan Garren

[souldriver]

Hi Stig, Hi Alan
Thanks for answering!
Yes the red LEDS light up. The small black wires are connected normaly to the ground - (white plastic with the yellow earth/wire-but not on the picture!).

Alan, I will change the layout again, but it has to work first. Thanks for your advise!

As i said before i can hear the music out from the loudspeaker but it sounds very low, thiny and fuzzy ... and i can hear the music also from the amp!!!....strange! Any idea??

[StigErik]

It may look like your speaker connectors are NOT insultated from the chassis? This will mean you have a short-circuit of the amp output, and very little sound .....

[souldriver]

Thanks Stig, i will check this....l

[Juhleren]

Originally Posted by StigErik

It may look like your speaker connectors are NOT insultated from the chassis? This will mean you have a short-circuit of the amp output, and very little sound .....

I can´t see the speaker wires being properly connected in the pictures (only one channel in one picture).
Are the pics from during assembly or showing the current setup?

cheers,

[sherlockth]

Hey guys, since you are at it, I need some constructive criticism. Do you see anything I should have done differently apart from twisting the output cables and the power cable of the SMPS as Audioschipper pointed out? Should I also twist the mains and the aux power (to the button led) cables?

I have some very low power humming when I put my ear 5cm from the speaker, is that to be expected or is it the untwisted cables.
Thanks!

[OllBoll]

Originally Posted by sherlockth

Hey guys, since you are at it, I need some constructive criticism. Do you see anything I should have done differently apart from twisting the output cables and the power cable of the SMPS as Audioschipper pointed out? Should I also twist the mains and the aux power (to the button led) cables?

I have some very low power humming when I put my ear 5cm from the speaker, is that to be expected or is it the untwisted cables.
Thanks!

If I remember correctly the speaker outputs on the NCore should ideally not be on opposite sides. I think Bruno taked about the inductor introducing unnecessary noise into output if that was done.