Multiple if else statements AngularJS should not be fired at the same time

The fire events are taken place on the same template, but should be fired at a different certain point of page Y offset. Now both are firing at the same time, so my question is how can that be fixed.

var accessoires = angular.module("accessoires", ["ngAnimate"]);
	accessoires.controller("Headphone", function($scope){
	});

	accessoires.directive("scroll", function ($window) {
	    return function(scope, element, attrs) {
	        angular.element($window).bind("scroll", function() {
				if (this.pageYOffset > 10) {
					scope.boolChangeClass = true;
				} else {
					scope.boolChangeClass = true;
				}
				scope.$apply();
	        });
	    };
	});

		accessoires.directive("scroll", function ($window) {
	    return function(scope, element, attrs) {
	        angular.element($window).bind("scroll", function() {
				if (this.pageYOffset > 800) {
					second.imageAnimateDown = true;
				} else {
					scope.imageAnimateDown = true;
				}
				scope.$apply();
	        });
	    };
	});

<html lang="en" ng-app="myApp">
<body>
<script type="text/ng-template" id="pages/accessories.html">
		<div ng-controller="Headphone" scroll class="accessoires" >
		
		<div class="container-fluid">
		<div ng-style="{'background-image': 'url(http://res.cloudinary.com/djlrz2rnd/image/upload/q_100/v1479044967/hd50_dash_8ffda17_yuqtme.jpg)'}" class="headphone_image" ng-class="{min:boolChangeClass}">
			<span id="HD_headphone">HD 50</span>
		</div>

		<div ng-style="{'background-image': 'url(http://www3.res.meizu.com/static/en/accessory/hd50/summary/images/cross_white_d2d07af.png)'}" class="headphone_image" ng-class="{min:imageAnimateDown}">
			<span id="white-headphone-vertical">White version</span>
		</div>
		</div>

		</div>
	</script>
</body>
</html>
.headphone_image {
	background-size: contain;
	background-repeat: no-repeat;
	background-position: center top;
	height: 0;
	width: 100%;
	bottom: 0;
	position: relative;
	padding-top: 56.25%;
}

#HD_headphone {
	color: #3db1fa;
	border: 1px solid #3db1fa;
	top: 200px;
	left: 0;
	font-size: 20px;
	text-align: center;
	width: 200px;
	position: absolute;
}

.min #HD_headphone {
	-webkit-transition: all cubic-bezier(0.250, 0.460, 0.450, 0.940) 2s;
    -moz-transition: all cubic-bezier(0.250, 0.460, 0.450, 0.940) 2s;
    -ms-transition: all cubic-bezier(0.250, 0.460, 0.450, 0.940) 2s;
    -o-transition: all cubic-bezier(0.250, 0.460, 0.450, 0.940) 2s;
    transition: all cubic-bezier(0.250, 0.460, 0.450, 0.940) 2s;
	margin-left: 200px;
}

#white-headphone-vertical {
	top: 200px;
	position: absolute;
}

.min #white-headphone-vertical {
	-webkit-transition: all cubic-bezier(0.250, 0.460, 0.450, 0.940) 3s;
    -moz-transition: all cubic-bezier(0.250, 0.460, 0.450, 0.940) 3s;
    -ms-transition: all cubic-bezier(0.250, 0.460, 0.450, 0.940) 3s;
    -o-transition: all cubic-bezier(0.250, 0.460, 0.450, 0.940) 3s;
    transition: all cubic-bezier(0.250, 0.460, 0.450, 0.940) 3s;
	margin-top: 200px;
}

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