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+--- Thread: DIY D200 to D250 Conversion (/Thread-DIY-D200-to-D250-Conversion)
DIY D200 to D250 Conversion - Manoet - 21-Apr-2016
This weekend's project will be to attempt converting my D200 to a D250 via simply renaming my existing D200 to a D250 via the configurator. No idea if it can be this simple but I have it on good authority they're identical electronics contained within a different box/case. However, my previous convection modifications should easily allow for at least matching thermal efficiencies, perhaps even better than an OEM D250 enclosure... time will tell. No way to know without the effort and minimal risk. Also no way to know if it can be as simple as renaming my 200 a 250 via the configurator but it would seem at least intuitively possible. And if possible it seems to be an even greater logical conclusion to the mods I did previously via the stripping/black anodizing, PEM-ectomy, PSU modifications and high efficiency thermal cooling medium, WBT silver binding posts, eliminating ALL magnetic fasteners/provisions and passive or active convection cooling available to me at this point. May not work at all in which case I wasted a day. But I prefer to look at it from a "what if it does work!?!" Especially if accomplished via a simple config change. A minimal risk 30 minute SW/FW investment for a potential D200 to D250 upgrade seems at the very least, a worthwhile endeavor to me!
RE: DIY D200 to D250 Conversion - Rufus McDufus - 21-Apr-2016
Nice idea! I wonder if anyone else has tried it? Would be amusing if it works.
RE: DIY D200 to D250 Conversion - Ron D - 21-Apr-2016
forgive my ignorance here....
Factoring out your mods are the "guts" of the 200 virtually / mostly the same as the 250 (whose case appears to differ, at least to my interpretation, to cover the increased heat generated by the increased power)?
If this can be done it would be an eye opener and something that I would think Devialet might have anticipated and built in a way to negate it from happening.
As a new owner of a 400 having recently acquired a Companion, I wait with baited breath on your findings as I'm not sure should you be successful if that now opens up the possibility of turning a 400 into a 800?
Again forgive my ignorance I am anything but a Devialet expert...
RE: DIY D200 to D250 Conversion - Dr Tone - 21-Apr-2016
There has to be a check internally in the unit that prevents you from loading a 250 config file. Any hacking the config file will break the checksum generated with it.
RE: DIY D200 to D250 Conversion - Hifi_swlon - 21-Apr-2016
I'm sure I read somewhere that someone thought it was a possibility the D200 was maybe deliberately handicapped by Devialet compared to the D250 - rather than it being down to cases/heat sinks. A bit vague I know but I can't remember quite where that thought came from....
It seems quite plausible to me though - we'd never know if less refined sampling algorithms etc were used in a D200 for example. In theory, if you took the boards out of their cases they should both sound identical if the case is meant to be the only difference, but I have a hunch they wouldn't..... Well, you know in theory, they'd perhaps both just blow up with no case
RE: DIY D200 to D250 Conversion - hk6230 - 22-Apr-2016
Bravo, Manoet. Another daring endeavor! Good luck and wish you every success on this.
RE: DIY D200 to D250 Conversion - rwjr44 - 22-Apr-2016
Can't wait to read your reports.
RE: DIY D200 to D250 Conversion - baddog - 22-Apr-2016
I suspect you will need to convince the firmware rather than the configurator that you have a 250. That being said, let us know!
RE: DIY D200 to D250 Conversion - Jeffaz - 22-Apr-2016
I did some research on how to manually modify the config file, without having to pay a visit to configurator, but I could't figure out how to calculate the CRC.
I seems that Devialet uses a 32bit CRC, but after tried some CRC softwares, I finally gave it up.
DIY D200 to D250 Conversion - Krisp - 23-Apr-2016
(22-Apr-2016, 13:16)Jeffaz Wrote: I did some research on how to manually modify the config file, without having to pay a visit to configurator, but I could't figure out how to calculate the CRC.
I seems that Devialet uses a 32bit CRC, but after tried some CRC softwares, I finally gave it up.
They have probably added some random seed to the CRC to prevent manipulation of the config files. I guess the intention is to prevent damage of either the speakers or the amp.