Hypex Ncore - Page 594 - diyAudio
Go Back   Home > Forums > Amplifiers > Class D
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Class D Switching Power Amplifiers and Power D/A conversion

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Closed Thread
 
Thread Tools Search this Thread
Old 13th January 2013, 04:33 PM   #5931
ds23man is offline ds23man  Netherlands
diyAudio Member
 
ds23man's Avatar
 
Join Date: Oct 2006
Quote:
Originally Posted by Julf View Post
Maybe you want to be able to play really loud?

Independent of your speaker sensitivity or amp power, you might have a situation where the last 10 dB of input amplitude make the amp clip. Lowering the amp gain 10 dB still allows you to play at full volume, but gives you 10 dB extra signal-to-noise ratio.
Yes, and lowering the gain in the preampstage will give you also 10db extra signal to noise ratio. The noise is comming from the preamp stage, not the Ncore! Btw, how many 100db+ speakersystems can cope with 200watt+ input levels???
 
Old 13th January 2013, 04:36 PM   #5932
Julf is offline Julf  Europe
diyAudio Member
 
Join Date: Oct 2011
Location: Amsterdam, The Netherlands
Quote:
Originally Posted by ds23man View Post
Yes, and lowering the gain in the preampstage will give you also 10db extra signal to noise ratio. The noise is comming from the preamp stage, not the Ncore!
I guess that depends on your peamp - and some of the noise might come from your attenuator.

Quote:
how many 100db+ speakersystems can cope with 200watt+ input levels???
No idea - but I also don't see what it has to do with the discussion about amp gain. Why would you want to use a 200W+ amp for a speaker system that can't handle the power?
 
Old 13th January 2013, 04:45 PM   #5933
ds23man is offline ds23man  Netherlands
diyAudio Member
 
ds23man's Avatar
 
Join Date: Oct 2006
Quote:
Originally Posted by Julf View Post



No idea - but I also don't see what it has to do with the discussion about amp gain. Why would you want to use a 200W+ amp for a speaker system that can't handle the power?
Well the guy who ****** up his ncore does
 
Old 13th January 2013, 04:57 PM   #5934
Julf is offline Julf  Europe
diyAudio Member
 
Join Date: Oct 2011
Location: Amsterdam, The Netherlands
Quote:
Originally Posted by ds23man View Post
Well the guy who ****** up his ncore does
Well, yes, he did state that he need to lower the gain with his 100dB speakers, but it is still possible that that was to avoid clipping rather than for avoiding blowing up his speakers or ears.
 
Old 13th January 2013, 05:38 PM   #5935
ds23man is offline ds23man  Netherlands
diyAudio Member
 
ds23man's Avatar
 
Join Date: Oct 2006
Quote:
Originally Posted by Julf View Post
Well, yes, he did state that he need to lower the gain with his 100dB speakers, but it is still possible that that was to avoid clipping rather than for avoiding blowing up his speakers or ears.
 
Old 13th January 2013, 07:08 PM   #5936
diyAudio Member
 
Join Date: Jun 2011
I use a passive preamp (TVC) after a 5V output balanced DAC.
The very fist step of the TVC is a bit loud for "night" listenings.
I also plan to use a DSP with digital volume control so I definitely need to lower the gain. It is as simple as that.

Before my message there was no serious warnings about removing the resistor, everybody said it was easy ...
After my message, we find 2 other people that had some problems !
 
Old 13th January 2013, 07:42 PM   #5937
BertDB is offline BertDB  Belgium
diyAudio Member
 
BertDB's Avatar
 
Join Date: Aug 2012
Location: Ghent
that all depends on your skills and experience in SMD (de)soldering, and is in fact not related to the nCore itself.
Some will find it easy, others will find it difficult..
It proves that a lot on the internet is subjective and should be red with care

Nevertheless, it's a pity that your amp died
 
Old 13th January 2013, 08:12 PM   #5938
Julf is offline Julf  Europe
diyAudio Member
 
Join Date: Oct 2011
Location: Amsterdam, The Netherlands
Quote:
Originally Posted by Paulkouhan View Post
Before my message there was no serious warnings about removing the resistor, everybody said it was easy ...
I definitely reported, in this thread, killing one of my nc400s when desoldering R141 at the time it happened.
 
Old 14th January 2013, 12:10 AM   #5939
Regnad is offline Regnad  United States
diyAudio Member
 
Join Date: Mar 2005
Location: California
Quote:
Originally Posted by dan92075 View Post
Hi Regnad - now I am confused

Do you mean to say that the NC400 with 6" speaker wire outperforms the NC1200 with the longer speaker wire?

I thought you were indicating in an earlier post that the NC1200 sounded better even when using longer speaker wire?

Appreciate if you could clarify - thanks!
Sorry, I meant that the NC400 amps with short speaker cables were better than the NC400 with longer ones. I think that the NC1200 is better still but so much of this is synergy and many other things. One thing is for sure, with the NC400 I considered unhooking the subs and with the NC1200 it was certain. I have not tried short speaker cables with the NC1200 amps.
 
Old 14th January 2013, 06:26 AM   #5940
diyAudio Member
 
Join Date: Aug 2012
Quote:
Originally Posted by Regnad View Post
Sorry, I meant that the NC400 amps with short speaker cables were better than the NC400 with longer ones. I think that the NC1200 is better still but so much of this is synergy and many other things. One thing is for sure, with the NC400 I considered unhooking the subs and with the NC1200 it was certain. I have not tried short speaker cables with the NC1200 amps.
ok - thanks - that makes sense now!

also, out of curiosity how long and what size is the cable with the NC1200?
 

Closed Thread


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Hypex Ncore vs. NAKSA AlliumPorrum Class D 1 26th May 2015 07:36 PM
Problem with Hypex Ncore Koifarm Class D 29 13th October 2014 07:32 AM
Any news on hypex ncore 2.0? JZatopa Class D 1 13th August 2013 11:30 AM
Hypex UcD700 vs NCore Earbound Class D 25 15th March 2013 05:10 PM
Building a Hypex Ncore... Jabbejokker Class D 0 7th March 2013 10:08 PM


New To Site? Need Help?

All times are GMT. The time now is 11:19 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2016 DragonByte Technologies Ltd.
Copyright 1999-2016 diyAudio

Content Relevant URLs by vBSEO 3.3.2
Wiki