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Thread: Neurochrome Modulus-686

  1. #1
    Join Date: May 2012

    Location: Toulouse, France

    Posts: 5,582
    I'm Kevin.

    Default Neurochrome Modulus-686

    After upgrading my speakers to some Triangle Esprit Antal EZ, I want a bit more power than my Modulus-86 or Firebottle Monos can provide.

    As I like the sound of the Modulus -86 amplifiers I currently have, I have decided to build myself a Modulus-686.

    This is my first DIY build, so to test my skill/capability I started with the Guardian 686 speaker protection module. This is something I completed during the 1st confinement here in France, but I did not get round to testing it. It is now tested, and as we head into a second confinement, I have decided to build the power supply boards.

    The target is to build a dual mono version in a large case. For this, I need two power boards. They were ordered last week, and have already arrived. I am mot waiting for the parts to arrive from Mouser before I start building them.

    This is going to be a long term build, to spread the cost out a little.
    Kevin

    Too busy enjoying the music....

    European loan coordinator for Graham Slee HiFi system components..

  2. #2
    Join Date: Oct 2012

    Location: The Black Country

    Posts: 5,687
    I'm Alan.

    Default

    Funnily enough I am also building a 686 amplifier for someone. Shall I posts pics on here?

  3. #3
    Join Date: Sep 2011

    Location: Kilmarnock, Ayrshire, Scotland

    Posts: 515
    I'm stuart.

    Default

    I’ve just completed my dual mono 686, well, when I say completed I mean it’s playing music but still some work to do on tidying it up. I’ll see if I can post a pic later to show the inside
    Garrard 401, Jelco 750 with Shuggie, Ortofon 2M Black / ZYX Yatra 100, Project Phono RS with Sigma22 Linear PS, RPi3 + DigiOne + Linear PS, RPi3/1Tb SSD with PiCorePlayer + Linear PS, Perreaux Eloquence 250i 40th Anniversary with ES9038Pro DAC, DCG3 Pre-Amp, Neurochrome 8x2 Pre-Amp, Neurochrome 686 Power amp, Benchmark DAC2 HGC, Primare V25 CD player, Monitor Audio PL300, Sjostrom DCT03 DC Blocker.

  4. #4
    Join Date: May 2012

    Location: Toulouse, France

    Posts: 5,582
    I'm Kevin.

    Default

    Quote Originally Posted by Firebottle View Post
    Funnily enough I am also building a 686 amplifier for someone. Shall I posts pics on here?
    Why not. It will give me an idea of what mine should look line.
    Kevin

    Too busy enjoying the music....

    European loan coordinator for Graham Slee HiFi system components..

  5. #5
    Join Date: May 2012

    Location: Toulouse, France

    Posts: 5,582
    I'm Kevin.

    Default

    Out of interest, what transformers are you guys using?
    I was thinking 2 off 2x24v 400VA, but someone has suggested 600VA. Price difference is not great, so is it a good idea?
    Kevin

    Too busy enjoying the music....

    European loan coordinator for Graham Slee HiFi system components..

  6. #6
    Join Date: May 2016

    Location: Gloucestershire

    Posts: 752
    I'm Ian.

    Default

    I had an email from Tom yesterday about the release of 686 Rev 1.1 - is this what you guys have got?

  7. #7
    Join Date: May 2012

    Location: Toulouse, France

    Posts: 5,582
    I'm Kevin.

    Default

    That is what I am going to get. I need to shift some gear before I place my order.
    Kevin

    Too busy enjoying the music....

    European loan coordinator for Graham Slee HiFi system components..

  8. #8
    Join Date: Sep 2011

    Location: Kilmarnock, Ayrshire, Scotland

    Posts: 515
    I'm stuart.

    Default

    I used two 25V 400VA Audio Grade from Toroidy, if you get bigger VA make sure they fit in the case as I almost made that mistake. Mine is a fairly big case and there's not a lot of room left. Internal dimensions of my case are: Width= 330mm Height= 142 mm Depth = 300 mm

    [IMG][/IMG]

    [IMG][/IMG]
    Garrard 401, Jelco 750 with Shuggie, Ortofon 2M Black / ZYX Yatra 100, Project Phono RS with Sigma22 Linear PS, RPi3 + DigiOne + Linear PS, RPi3/1Tb SSD with PiCorePlayer + Linear PS, Perreaux Eloquence 250i 40th Anniversary with ES9038Pro DAC, DCG3 Pre-Amp, Neurochrome 8x2 Pre-Amp, Neurochrome 686 Power amp, Benchmark DAC2 HGC, Primare V25 CD player, Monitor Audio PL300, Sjostrom DCT03 DC Blocker.

  9. #9
    Join Date: May 2012

    Location: Toulouse, France

    Posts: 5,582
    I'm Kevin.

    Default

    I have been advised to use 2 x 24V to allow for higher voltage on the mains.

    That looks like a tight fit. One of the reasons I am looking atba 4U or 5U 400mm deep case. I just need to make sure it fits in my rack first.
    Last edited by CageyH; 04-11-2020 at 10:00.
    Kevin

    Too busy enjoying the music....

    European loan coordinator for Graham Slee HiFi system components..

  10. #10
    Join Date: May 2016

    Location: Gloucestershire

    Posts: 752
    I'm Ian.

    Default

    If anyone is after a case for their project I have this spare.



    Great heatsinks If you are interested pm me and we can talk details.

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