Thanks. As I wrote I know that this outdated M-Audio interface is not supported on Mac OSX I am using (Yosemite 10.10.4). I am aware that FireWire OSX 1.10.5 is 10 years old and it won't work properly today. I am dealing with it and this isn't workaround. So my last chance is users, who can send me M-Audio Firewire 1814 control panel preset file, because I can't change settings on "output" and "hardware" preferences. Please, is there anyone that could help?
nico the only one who can help you, is you! by using the device within its original intended requirements.
as you can see from the date of this review:
https://www.soundonsound.com/reviews/m-audio-firewire-1814which was in 2004 (almost 14 years ago).. when apple was still using PowerPC processors!
https://everymac.com/systems/by_year/macs-released-in-2004.html take a peek here to put things in perspective...
https://web.archive.org/web/20060821212015/http://www.m-audio.com:80/products/en_us/FireWire1814-main.html this is from the old m-audio website back when Avid owned M-audio, as you can see the device you have is compatible with M-powered 7 on the PowerPC platform aswell.
if your current software + mac are compatible with 10.6 you could repartition your drive and install snow leopard then you could use the device properly. you would be limited also to using other software, majority of which was released during snow leopards prominence (Aug 2009 - July 2012) any + all software in that range will be compatible with your device + 10.6 installation. either that or you need to think about selling the 1814 and buying a more modern interface with more driver support.