diff --git a/src/ol/source/imagestaticsource.js b/src/ol/source/imagestaticsource.js
index 9e0723ea15..a920c4484e 100644
--- a/src/ol/source/imagestaticsource.js
+++ b/src/ol/source/imagestaticsource.js
@@ -20,7 +20,7 @@ ol.source.ImageStatic = function(options) {
 
   var imageExtent = options.imageExtent;
   var imageSize = options.imageSize;
-  var imageResolution = (imageExtent[3] - imageExtent[2]) / imageSize[1];
+  var imageResolution = (imageExtent[1][1] - imageExtent[0][1]) / imageSize[1];
   var projection = ol.proj.get(options.projection);
 
   goog.base(this, {
diff --git a/src/ol/source/imagewmssource.js b/src/ol/source/imagewmssource.js
index d69c5b7be9..dfc3305423 100644
--- a/src/ol/source/imagewmssource.js
+++ b/src/ol/source/imagewmssource.js
@@ -89,8 +89,8 @@ ol.source.ImageWMS.prototype.getImage =
 
   extent = extent.slice();
   ol.extent.scaleFromCenter(extent, this.ratio_);
-  var width = (extent[1] - extent[0]) / resolution;
-  var height = (extent[3] - extent[2]) / resolution;
+  var width = (extent[1][0] - extent[0][0]) / resolution;
+  var height = (extent[1][1] - extent[0][1]) / resolution;
   var size = [width, height];
 
   this.image_ = this.createImage(extent, resolution, size, projection);
diff --git a/src/ol/source/tilejsonsource.js b/src/ol/source/tilejsonsource.js
index 337791f970..eb1f91e664 100644
--- a/src/ol/source/tilejsonsource.js
+++ b/src/ol/source/tilejsonsource.js
@@ -69,15 +69,15 @@ goog.inherits(ol.source.TileJSON, ol.source.TileImage);
  * @protected
  */
 ol.source.TileJSON.prototype.handleTileJSONResponse = function() {
-
   var tileJSON = ol.tilejson.grids_.pop();
 
   var epsg4326Projection = ol.proj.get('EPSG:4326');
 
   var extent;
   if (goog.isDef(tileJSON.bounds)) {
-    var bounds = tileJSON.bounds;
-    var epsg4326Extent = [bounds[0], bounds[2], bounds[1], bounds[3]];
+    var epsg4326Extent = [
+      tileJSON.bounds.slice(0, 2), tileJSON.bounds.slice(2)
+    ];
     var transform = ol.proj.getTransformFromProjections(
         epsg4326Projection, this.getProjection());
     extent = ol.extent.transform(epsg4326Extent, transform);
diff --git a/src/ol/source/tilewmssource.js b/src/ol/source/tilewmssource.js
index 85df962b53..d0853c9540 100644
--- a/src/ol/source/tilewmssource.js
+++ b/src/ol/source/tilewmssource.js
@@ -75,10 +75,11 @@ ol.source.TileWMS = function(options) {
     extent = goog.isDef(extent) ? extent : projectionExtent;
 
     if (!goog.isNull(extent) && projection.isGlobal() &&
-        extent[0] === projectionExtent[0] &&
-        extent[1] === projectionExtent[1]) {
+        extent[0][0] === projectionExtent[0][0] &&
+        extent[1][0] === projectionExtent[1][0]) {
       var numCols = Math.ceil(
-          (extent[1] - extent[0]) / (tileExtent[1] - tileExtent[0]));
+          (extent[1][0] - extent[0][0]) /
+          (tileExtent[1][0] - tileExtent[0][0]));
       x = goog.math.modulo(x, numCols);
       tileExtent = tileGrid.getTileCoordExtent(
           new ol.TileCoord(tileCoord.z, x, tileCoord.y));
diff --git a/src/ol/source/wmssource.js b/src/ol/source/wmssource.js
index 07fb1b0cc2..02052e1e6a 100644
--- a/src/ol/source/wmssource.js
+++ b/src/ol/source/wmssource.js
@@ -54,8 +54,8 @@ ol.source.wms.getUrl =
 
   var axisOrientation = projection.getAxisOrientation();
   var bboxValues = (wms13 && axisOrientation.substr(0, 2) == 'ne') ?
-      [extent[2], extent[0], extent[3], extent[1]] :
-      [extent[0], extent[2], extent[1], extent[3]];
+      [extent[0][1], extent[0][0], extent[1][1], extent[1][0]] :
+      [extent[0][0], extent[0][1], extent[1][0], extent[1][1]];
   baseParams['BBOX'] = bboxValues.join(',');
 
   return goog.uri.utils.appendParamsFromMap(baseUrl, baseParams);
diff --git a/src/ol/source/wmtssource.js b/src/ol/source/wmtssource.js
index 0a44eede2c..0d358f5694 100644
--- a/src/ol/source/wmtssource.js
+++ b/src/ol/source/wmtssource.js
@@ -154,10 +154,11 @@ ol.source.WMTS = function(options) {
             options.extent : projectionExtent;
 
         if (!goog.isNull(extent) && projection.isGlobal() &&
-            extent[0] === projectionExtent[0] &&
-            extent[1] === projectionExtent[1]) {
+            extent[0][0] === projectionExtent[0][0] &&
+            extent[1][0] === projectionExtent[1][0]) {
           var numCols = Math.ceil(
-              (extent[1] - extent[0]) / (tileExtent[1] - tileExtent[0]));
+              (extent[1][0] - extent[0][0]) /
+              (tileExtent[1][0] - tileExtent[0][0]));
           x = goog.math.modulo(x, numCols);
           tmpTileCoord.z = tileCoord.z;
           tmpTileCoord.x = x;
diff --git a/test/spec/ol/source/tilesource.test.js b/test/spec/ol/source/tilesource.test.js
index 948fc47dc8..d5d05f5c71 100644
--- a/test/spec/ol/source/tilesource.test.js
+++ b/test/spec/ol/source/tilesource.test.js
@@ -192,7 +192,7 @@ describe('ol.source.Tile', function() {
  * @param {Object.<string, boolean>} loaded Lookup of already loaded tiles.
  */
 ol.test.source.TileMock = function(loaded) {
-  var extent = [-180, 180, -180, 180];
+  var extent = [[-180, -180], [180, 180]];
   var tileGrid = new ol.tilegrid.TileGrid({
     resolutions: [360 / 256, 180 / 256, 90 / 256, 45 / 256],
     extent: extent,
diff --git a/test/spec/ol/source/vectorsource.test.js b/test/spec/ol/source/vectorsource.test.js
index ee40475a22..edb5ce267f 100644
--- a/test/spec/ol/source/vectorsource.test.js
+++ b/test/spec/ol/source/vectorsource.test.js
@@ -20,7 +20,7 @@ describe('ol.source.Vector', function() {
       var layer = new ol.layer.Vector({
         source: source
       });
-      source.prepareFeatures(layer, [-180, 180, -90, 90],
+      source.prepareFeatures(layer, [[-180, -90], [180, 90]],
           ol.proj.get('EPSG:4326'),
           function() {
             expect(source.loadState_).to.be(ol.source.VectorLoadState.LOADED);
@@ -66,7 +66,7 @@ describe('ol.source.Vector', function() {
       var layer = new ol.layer.Vector({
         source: source
       });
-      source.prepareFeatures(layer, [-180, 180, -90, 90],
+      source.prepareFeatures(layer, [[-180, -90], [180, 90]],
           ol.proj.get('EPSG:4326'),
           function() {
             expect(source.loadState_).to.be(ol.source.VectorLoadState.LOADED);
diff --git a/test/spec/ol/source/wmssource.test.js b/test/spec/ol/source/wmssource.test.js
index af93e5c7e8..bfc4ebc9c8 100644
--- a/test/spec/ol/source/wmssource.test.js
+++ b/test/spec/ol/source/wmssource.test.js
@@ -5,7 +5,7 @@ describe('ol.source.wms', function() {
   describe('ol.source.wms.getUrl', function() {
     it('creates expected URL', function() {
       var epsg3857 = ol.proj.get('EPSG:3857');
-      var extent = [-20037508.342789244, 0, -20037508.342789244, 0];
+      var extent = [[-20037508.342789244, -20037508.342789244], [0, 0]];
       var expected = 'http://wms?SERVICE=WMS&VERSION=1.3.0&REQUEST=' +
           'GetMap&FORMAT=image%2Fpng&TRANSPARENT=true&WIDTH=256&HEIGHT=256&' +
           'foo=bar&STYLES=&CRS=EPSG%3A3857&BBOX=' +
@@ -16,7 +16,7 @@ describe('ol.source.wms', function() {
     });
     it('creates expected URL respecting axis orientation', function() {
       var epsg4326 = ol.proj.get('EPSG:4326');
-      var extent = [-180, 0, -90, 90];
+      var extent = [[-180, -90], [0, 90]];
       var expected = 'http://wms?SERVICE=WMS&VERSION=1.3.0&REQUEST=' +
           'GetMap&FORMAT=image%2Fpng&TRANSPARENT=true&WIDTH=256&HEIGHT=256&' +
           'foo=bar&STYLES=&CRS=EPSG%3A4326&BBOX=-90%2C-180%2C90%2C0';