--- a/testing/web-platform/meta/webaudio/idlharness.https.html.ini
+++ b/testing/web-platform/meta/webaudio/idlharness.https.html.ini
@@ -48,22 +48,16 @@
     expected: FAIL
 
   [AudioParam interface: operation cancelAndHoldAtTime(double)]
     expected: FAIL
 
   [AudioParam interface: new AudioBufferSourceNode(context).playbackRate must inherit property "automationRate" with the proper type]
     expected: FAIL
 
-  [AudioParam interface: new AudioBufferSourceNode(context).playbackRate must inherit property "minValue" with the proper type]
-    expected: FAIL
-
-  [AudioParam interface: new AudioBufferSourceNode(context).playbackRate must inherit property "maxValue" with the proper type]
-    expected: FAIL
-
   [AudioParam interface: new AudioBufferSourceNode(context).playbackRate must inherit property "cancelAndHoldAtTime(double)" with the proper type]
     expected: FAIL
 
   [AudioParam interface: calling cancelAndHoldAtTime(double) on new AudioBufferSourceNode(context).playbackRate with too few arguments must throw TypeError]
     expected: FAIL
 
   [AudioListener interface: attribute positionX]
     expected: FAIL

--- a/testing/web-platform/meta/webaudio/the-audio-api/the-constantsourcenode-interface/constant-source-basic.html.ini
+++ b/testing/web-platform/meta/webaudio/the-audio-api/the-constantsourcenode-interface/constant-source-basic.html.ini
@@ -1,31 +1,13 @@
 [constant-source-basic.html]
-  [X Factory method: node.offset.minValue is not equal to -3.4028234663852886e+38. Got -Infinity.]
-    expected: FAIL
-
-  [X Factory method: node.offset.maxValue is not equal to 3.4028234663852886e+38. Got Infinity.]
-    expected: FAIL
-
-  [< [createConstantSource()\] 2 out of 11 assertions were failed.]
-    expected: FAIL
-
-  [X Constructor: node.offset.minValue is not equal to -3.4028234663852886e+38. Got -Infinity.]
-    expected: FAIL
-
-  [X Constructor: node.offset.maxValue is not equal to 3.4028234663852886e+38. Got Infinity.]
-    expected: FAIL
-
-  [< [new ConstantSourceNode()\] 2 out of 11 assertions were failed.]
-    expected: FAIL
-
   [X start(-1) threw "NotSupportedError" instead of RangeError.]
     expected: FAIL
 
   [X stop(-1) threw "NotSupportedError" instead of RangeError.]
     expected: FAIL
 
   [< [start/stop exceptions\] 2 out of 10 assertions were failed.]
     expected: FAIL
 
-  [# AUDIT TASK RUNNER FINISHED: 3 out of 3 tasks were failed.]
+  [# AUDIT TASK RUNNER FINISHED: 1 out of 3 tasks were failed.]
     expected: FAIL