Upon a plea other than guilty the magistrate shall set a trial date which shall be at least 15 days after the plea is entered. The magistrate shall notify the prosecuting attorney of the trial date and shall advise the defendant that the trial will be without a jury unless demand for jury trial is made no later than ten days following the plea of not guilty. Failure to make a jury demand in the manner prescribed herein constitutes a waiver of jury. If demand is made, the action shall be tried by a jury of six members. Upon the request of the defendant, the magistrate may set the date of trial at a time less than 15 days after a plea other than guilty is entered. The magistrate shall notify the defendant that a request for earlier trial date shall constitute a waiver of jury.