Home Computer Audio Asylum

Music servers and other computer based digital audio technologies.

[ Follow Ups ] [ Post Followup ] Thread: [ Display  All  Email ] [ Computer Audio Asylum ]
[ Alert Moderator ]

Finetuning cMP

These are important tuning aspects for cMP which goes beyond the documentation.

  1. Make sure this BIOS change is applied. Its a component for Vista thats not used in XP.
  2. Use a quality power cord for the 'dirty' power inlet of cMP.
  3. RAM settings have large impact on sound quality. Recommendedation is the default 200MHz setting as per documentation.

    If you're using an E21xx processor with very high quality RAM, than these posts will help. Also, for TRFC, set highest value only if RAM used supports 'Autorefresh' (see data sheet of RAM used). Memory refreshes are complex power consuming tasks.

    For E1200 processor, stick to recommendation here. Take note of '1T CMD Support' setting change.
  4. If your DAC supports 24/192 SPDIF / AES input, output 24/192 from foobar / SRC upsampler. Processor cannot be underclocked as more processing power is needed. Use default power setting of Home / Office Desk.
  5. SSD drives should be available in next few months at lower cost and higher capacites. Benefits of these drives are:
    • no BLDC motors (therefore eliminating associated electrical interference)
    • no vibrations
    • lower power consumption
    • faster sequential read bandwidth which improves RAM load times

  6. Advanced: This is work in progress and only applies to setups with no Networking functions. Using Autoruns, disable these LSA providers which can be found in the 'LSA Providers' tab:



    This reduces Windows Sercurity subsystem footprint (lsass.exe). I haven't tested the remaining 2 checked items - I suspect this will cause a system rebuild.
  7. Advanced: Implement Minlogon as a final step.


Advanced items above are high risk - any mistakes in implementation could result in a system rebuild. Take great care.

Noise floor after DAC's output is important. In my case this only involves an I/C cable (no preamp) and amps. Upgrading from SR Absolute Ref X2 to SR Tesla Apex allowed for improvements to become clearly audible. In other words, the chain after your DAC could become a limiting factor.

This post is made possible by the generous support of people like you and our sponsors:
  Parts Connexion  

Follow Ups Full Thread
Follow Ups
FAQ

Post a Message!

 Forgot Password?
Moniker (Username):
Password (Optional):
  Remember my Moniker & Password  (What's this?)    Eat Me
E-Mail (Optional):
Subject:
Message:   (Posts are subject to Content Rules)
Optional Link URL:
Optional Link Title:
Optional Image URL:
Upload Image:
E-mail Replies:  Automagically notify you when someone responds.

[ Top Top of Page ] [ Contact Us ] [ Support/Wish List ] [ Copyright © 2024, Audio Asylum, all rights reserved ]
[ General ] [ Speakers ] [ Tubes ] [ Vinyl ] [ Digital ] [ Hi-Rez ] [ Video Asylum ] [ Cables ] [ Tweaks/DIY ] [ Music ] [ Films ]