Ah ! found the answer on the site! thanks

Hmm - how strange! I have been thinking a lot about this problem. In my livingroom I have a BM5 and BS5, hooked up via a BV7 (acting as audiomaster). In the dining area I have a pair of BL3 linked via a BeoLink Active module. The sound level is unfortunately quite high when turning the BL3s on. I tried to search the forum for the answer you found, but I was not successful in my quest... Does anyone have a hint on how I can find where to change this setting? I am still a novice in the B&O world of unlimited cusomized choices and settings... 😳

//Anniber 

Try this....set the volume where you want it    

then List until get to speaker, use left and right on Beo 4 to adjust balance

then

List on Beo 4 until get to A.Setup     might have to add this function to the Beo 4, once there press go 

List will then bring up bass treble and loudness which can be adjusted and finally a store function.