The volume of stereos, radios, televisions, musical instruments, voices, etc. must be such that it does not disturb anyone in any other unit or in any common area. Speakers may not be installed in or on party walls (walls which are adjacent to another apartment), or soffits in party walls. Do not use washers, dryers, dishwashers, vacuum cleaners or any other noisy appliance between 10 pm. and 7 am