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

Swap Meet Sell your stuff here, who knows, some other fanatic might be interested!

Complete amp - 4x Neurochrome Modulus 86
Complete amp - 4x Neurochrome Modulus 86
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 19th October 2017, 10:50 PM   #1
uzernaam is offline uzernaam  United States
diyAudio Member
 
uzernaam's Avatar
 
Join Date: Oct 2010
Location: Phoenix Arizona USA
Default Complete amp - 4x Neurochrome Modulus 86

I have an amp I've been working on for weeks now, can't get rid of the noise. I probably just don't have the skills to make it work right, though my soldering, layout and cable management are top-notch.

All parts were purchased new during the last 30 days, including 4 modulus 86 boards, all parts to populate it, an Antek AN-5220 toroidal transformer, a DIYaudio power supply board including 8 15,000uF Nichicon caps rated 5,000 hours at 105C.

It's a complete amp, it works and sounds great except for the noise. I'm not sure if it's my signal source that is creating a ground loop but right now I'm blaming the amp since I have another one which causes me no trouble.

If you know what you're doing you may be able to solve the problem I have not. The whole thing will be shipped assembled to you for the asking price of $600 (continental united states).
Attached Images
File Type: jpg amp_build_001.jpg (165.5 KB, 301 views)
File Type: jpg amp_build_002.jpg (204.5 KB, 297 views)
File Type: jpg amp_build_003.jpg (436.1 KB, 299 views)
File Type: jpg amp_build_004.jpg (402.0 KB, 293 views)
File Type: jpg amp_build_005.jpg (374.6 KB, 293 views)

Last edited by uzernaam; 20th October 2017 at 12:18 AM.
  Reply With Quote
Old 19th October 2017, 10:59 PM   #2
billshurv is offline billshurv  United Kingdom
diyAudio Member
 
billshurv's Avatar
 
Join Date: Mar 2014
Complete amp - 4x Neurochrome Modulus 86
Hi,

The mod-86 should be silent in operation and nothing wrong with the topology. Seems a shame to write it off so soon. Have you tried asking in the build thread for some pointers?

If you have decided to go another route, then good luck with your sale.
  Reply With Quote
Old 19th October 2017, 11:02 PM   #3
scottjoplin is offline scottjoplin  Wales
diyAudio Member
 
scottjoplin's Avatar
 
Join Date: Dec 2015
Location: Penrhyndeudraeth
Why not ground everything straight to chassis?
__________________
Woofer Assisted Wideband is the New Testament renounce the anachronistic acronym FAST
  Reply With Quote
Old 19th October 2017, 11:16 PM   #4
uzernaam is offline uzernaam  United States
diyAudio Member
 
uzernaam's Avatar
 
Join Date: Oct 2010
Location: Phoenix Arizona USA
Quote:
Originally Posted by billshurv View Post
Hi,

The mod-86 should be silent in operation and nothing wrong with the topology. Seems a shame to write it off so soon. Have you tried asking in the build thread for some pointers?
Yes, I've got a thread I started here to try and get some outside advice. Nothing I've tried has worked.

Someone just posted that thread above.
  Reply With Quote
Old 20th October 2017, 01:06 AM   #5
asuslover is online now asuslover  Romania
diyAudio Member
 
Join Date: Aug 2016
Location: USA
Complete amp - 4x Neurochrome Modulus 86
I had a similar amp , but with the parallel86 boards, of course from neurochrome.com
and I had 0(zero) complains, no noise ,no pop up noise , just great sound. I used a single ended to pseudo differential cable, just like you,
the difference was that I had only 2 channels, not 4.
Your amp looks great!
  Reply With Quote
Old 20th October 2017, 02:09 AM   #6
dhsettim is offline dhsettim  New Zealand
diyAudio Member
 
Join Date: Jul 2004
Location: Hastings
Default Tom

Have you discussed your issues directly with Tom?
You can even do that privately away from DIYAudio forums.
Besides the great sound Tom's back up is what makes this a great project for beginners like myself.
t
  Reply With Quote
Old 21st October 2017, 03:58 AM   #7
pinnocchio is online now pinnocchio  Canada
diyAudio Member
 
pinnocchio's Avatar
 
Join Date: Sep 2010
Location: Montreal
If you show us a hookup diagram we could potentially help you

Do
__________________
PREAMPs : Bal AMB α10 + JC-80 | Bal DCB1 | Bal LDR3x | AMPs: AMB β24 | USSA3 & 5 | FO v1.4 | TGM8 | VZ Audio NS OPS | NX Amp | FC-100
DACs : TPA Buffalo II + OPC's NTD1 I/V | JLsounds | Mirand AK4490 + Discrete Output Speakers : Troels Gravesen ATS-4 | Sagwee LT V3
  Reply With Quote
Old 21st October 2017, 08:49 PM   #8
uzernaam is offline uzernaam  United States
diyAudio Member
 
uzernaam's Avatar
 
Join Date: Oct 2010
Location: Phoenix Arizona USA
The amp is still for sale. Already have my eye on a new project.
  Reply With Quote

Reply


Complete amp - 4x Neurochrome Modulus 86Hide 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
Neurochrome LM3886DR Build dreadnoughtstrength Chip Amps 347 18th June 2018 09:09 PM
Neurochrome Differential preamp build IanLenco Analog Line Level 34 29th May 2018 06:58 AM
neurochrome THAT Driver — Rev. 1.01 asuslover Swap Meet 1 11th October 2017 04:34 AM
Neurochrome boards asuslover Swap Meet 7 5th July 2017 11:56 PM
Neurochrome Parallel-86 Group Buy tomchr Group Buys 54 5th September 2016 05:53 AM


New To Site? Need Help?

All times are GMT. The time now is 04:09 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki