Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Class D Switching Power Amplifiers and Power D/A conversion

Hypex NC122MP integrated amp - Mute?
Hypex NC122MP integrated amp - Mute?
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
Reply
 
Thread Tools Search this Thread
Old 21st August 2019, 01:17 PM   #1
La 67 is offline La 67  Spain
diyAudio Member
 
Join Date: Apr 2019
Location: Barcelona
Default Hypex NC122MP integrated amp - Mute?

I have an NC122MP amp that I plan on converting into an integrated amp, using it along with the Putzeys balanced preamp in a single case.

Now, I would like to run the Putzeys pre from the Vaux of the NC122mp, but this means that I will not be able to turn on the preamp before the power amp--as per the customary procedure to avoid the "thump" heard through the speakers.

This brings me to my idea: use the Mute function on the NC122mp to cut the amp's output during power on. And my question:

Can I simply connect an SPDT to the amp's Mute pin? The SPDT would have one side providing the high logic (3,3-12v) and the other side to ground.

Or, is there a better way to accomplish my goal?

Mute pin specs from Hypex:
6.2 Amplifier Mute
By asserting either of the Amplifier Mute pins on the H-Box connector both amplifiers will be muted. This pin
may be left unconnected if the mute function is not used.

Amplifier mute: Logic High level 3,3 - 12 Vdc
Amplifier un-mute: Logic Low level < 0.8 Vdc


Any advice is appreciated.
  Reply With Quote
Old 25th August 2019, 03:40 AM   #2
Diomedian is offline Diomedian  Canada
diyAudio Member
 
Join Date: Nov 2004
Location: Halifax, N.S.
According to the NC122MP documentation (page 7), there is a delay of 1500ms after all power supplies reach operating voltage before there is any audio output. Whether that means the outputs are muted, I’m not sure, but if so that’s likely enough time to avoid a turn-on thump. You tell me though - I’m not familiar with Putzeys balanced pre.
  Reply With Quote

Reply


Hypex NC122MP integrated amp - Mute?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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Wanted NC122MP OEM movan Swap Meet 1 13th June 2019 07:35 AM
Hypex nCore NC122MP grey sounding Veeren Class D 30 22nd February 2019 10:20 AM
WTB: 2x Hypex NC122MP matejS Swap Meet 0 28th November 2018 12:19 AM
FS: Hypex Ncore Nc122MP and Nc252MP raelman Swap Meet 2 11th December 2017 10:34 AM
Mute 3 UcDs with Hypex supply HG reins Class D 0 8th January 2009 07:18 PM


New To Site? Need Help?

All times are GMT. The time now is 08:40 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio
Wiki