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

Chip Amps Amplifiers based on integrated circuits

Modulus-86  build thread
Modulus-86  build thread
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 Yesterday, 09:57 PM   #4361
pistollero is offline pistollero  Portugal
diyAudio Member
 
Join Date: Apr 2016
Location: portugal
Quote:
Originally Posted by tomchr View Post
No need for any additional components on the differential lines. Just build the Modulus-86 according to the BOM and plug its input into the differential output of your DAC.



Mostly by routing magic smoke between devices. It's that smoke that you let out when the part fries. Gotta keep it inside the part. This is important!

On a serious note: There's good description of how the THAT1200 works in its data sheet: THAT Corporation 1200-series InGenius High-CMRR Balanced Line Receiver ICs

Tom
Ok tks!
I measure 2.9 dc volt between + and ground and - and ground.
Do i need to connect ground???
With transformers i only connect the + and - , not the ground.
  Reply With Quote
Old Today, 12:42 AM   #4362
tomchr is offline tomchr  Canada
diyAudio Member
 
tomchr's Avatar
 
Join Date: Feb 2009
Location: Calgary
Directly from the design documentation. Notice the filled solder dots on the ground connections to the chassis. That means you have a connection there. This is also described in the text.

Tom
Attached Images
File Type: png Screen Shot 2018-09-24 at 18.41.10.png (268.4 KB, 98 views)
__________________
MOD686: Up to 240W/8Ω, <0.00025% THD. MOD86: 40W/8Ω, 0.000054% THD. HP-1: 3W/20Ω, -130dBc THD, 128dB DNR.
Neurochrome : : Audio - www.neurochrome.com - Engineering : : Done : : Right
  Reply With Quote
Old Today, 07:52 AM   #4363
pistollero is offline pistollero  Portugal
diyAudio Member
 
Join Date: Apr 2016
Location: portugal
Quote:
Originally Posted by tomchr View Post
Directly from the design documentation. Notice the filled solder dots on the ground connections to the chassis. That means you have a connection there. This is also described in the text.

Tom
Ok i understand that but i don t have chassis. I have all the boards on a wood base.
In that case what is the best way to do?
Right now i connected the ground from analog dac ps to modulus 86 xlr ground by wire....
  Reply With Quote
Old Today, 05:41 PM   #4364
tomchr is offline tomchr  Canada
diyAudio Member
 
tomchr's Avatar
 
Join Date: Feb 2009
Location: Calgary
Quote:
Originally Posted by pistollero View Post
Ok i understand that but i don t have chassis. I have all the boards on a wood base.
In that case what is the best way to do?
Right now i connected the ground from analog dac ps to modulus 86 xlr ground by wire....
In that case the DAC supply ground should go to the MOD86 supply ground. DAC signal ground should go to pin 1 of the MOD86 input. Signal+ should go to MOD86 input pin 2 and Signal- to pin 3. If the DAC does not have differential out, take the DAC signal ground to MOD86 input pin 3.

Tom
__________________
MOD686: Up to 240W/8Ω, <0.00025% THD. MOD86: 40W/8Ω, 0.000054% THD. HP-1: 3W/20Ω, -130dBc THD, 128dB DNR.
Neurochrome : : Audio - www.neurochrome.com - Engineering : : Done : : Right
  Reply With Quote

Reply


Modulus-86  build threadHide 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
Modulus-86: Composite amplifier achieving <0.0004 % THD+N. tomchr Vendor's Bazaar 2407 12th September 2018 04:27 AM
Build Thread: OBEOS Tytte71 Multi-Way 15 1st October 2011 06:02 PM
Dome's Build Thread. joe58 Full Range 12 1st September 2010 04:05 PM
SE - Build Thread soundengine355 Solid State 6 27th June 2009 12:19 AM
New Project Build Thread ryoung Multi-Way 5 19th April 2008 01:15 AM


New To Site? Need Help?

All times are GMT. The time now is 09:17 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki