Recently i bought a little great pair of speakers, the Altec Lansing BXR1220, they are USB powered and do an egregious job when listening to music, without the annoying crickle-crackle sound that come from speakers of its category, without mentioning its light cost. However to match a suitable sound i think they need some adjustement through the equalizer of the sound card. I'm very happy of my integrated Realtek 888S, and I think that many of us are equipped by a Realtek sound card, but i discovered that every time I upgrade the drivers, any setting made to the equalizer, like custom presets and other adjustements are sudden lost. I haven't found an easy way to export them, through a settings file or the like, so I want to share what i found around the web in a way as easy as possible.
The process is not difficult as it seems, it involves you to export the equalizer settings related to your sound device through the windows registry key FxProperties and rename the inside key to the new one created by the installer after the installation of the new drivers, and "re-merge" the key. But let's proceed in order. The main key that stores our devices related settings is:
Inside this key we can find other subkeys that we'll call "mother" key, they are device related, and are the ones that changes through installations of new versions of the drivers. Inside our "mother" keys we can see a pair of subkeys named FxProperties and Properties, the first contains our equalizer settings and other customizations related to its specific device, the latter the name of the device itself, in our case Speakers. If you named your device "My favorite device #1" you need to dig through every Properties key and find the corresponding "mother" key that once identified we need to copy for later use, its value only. As shown through the screenshot the key we are intersted in is {5a6c434b-7a63-4055-bef9-8bdfa0b575fa}, and it is our mother key. Now we need to export the whole FxProperties key, the one related to the same device we just found, right above the Properties key. (exporting a registry key means to right click on it, on the registry editor, and save to a .reg file)
Now it's finally time to install our new drivers from Realtek. After that, we need to look for the newly created "mother" key relative to the device we want to "import" the Realtek equalizer settings previously saved through the FxProperties key to the .reg file, we will name it Fx.reg for convention. Once we found the new key relative to the Speakers device, in our case, we need to substitute it into the Fx.reg we previously created. Open it with your favorite Notepad and replace {5a6c434b-7a63-4055-bef9-8bdfa0b575fa} (this is the one of our example) with the new one you discovered. Close Fx.reg and double click on it to merge it with the windows registry, responding yes at the message prompt. It's quite sure that your key values will be different from the ones taken for this example, so be careful and/or save the whole main key HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\MMDevices\Audio\Render before installing the new drivers.
"ATTENTION!!! you need to repeat these passages for every device you intend to keep your settings, for example for Speakers and Headphones, the common ones, we will need to copy two different "mother" keys values and to export two different FxProperties keys."
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