diff --git a/content/media/webaudio/AudioParam.cpp b/content/media/webaudio/AudioParam.cpp
index 397a0f4c9b1..6993d4c8e23 100644
--- a/content/media/webaudio/AudioParam.cpp
+++ b/content/media/webaudio/AudioParam.cpp
@@ -20,19 +20,12 @@ NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(AudioParam, Release)
 
 AudioParam::AudioParam(AudioNode* aNode,
                        AudioParam::CallbackType aCallback,
-                       float aDefaultValue,
-                       float aMinValue,
-                       float aMaxValue)
+                       float aDefaultValue)
   : AudioParamTimeline(aDefaultValue)
   , mNode(aNode)
   , mCallback(aCallback)
   , mDefaultValue(aDefaultValue)
-  , mMinValue(aMinValue)
-  , mMaxValue(aMaxValue)
 {
-  MOZ_ASSERT(aDefaultValue >= aMinValue);
-  MOZ_ASSERT(aDefaultValue <= aMaxValue);
-  MOZ_ASSERT(aMinValue < aMaxValue);
   SetIsDOMBinding();
 }
 
diff --git a/content/media/webaudio/AudioParam.h b/content/media/webaudio/AudioParam.h
index 8d5012732e0..7c68201422b 100644
--- a/content/media/webaudio/AudioParam.h
+++ b/content/media/webaudio/AudioParam.h
@@ -34,9 +34,7 @@ public:
 
   AudioParam(AudioNode* aNode,
              CallbackType aCallback,
-             float aDefaultValue,
-             float aMinValue,
-             float aMaxValue);
+             float aDefaultValue);
   virtual ~AudioParam();
 
   NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(AudioParam)
@@ -96,16 +94,6 @@ public:
     mCallback(mNode);
   }
 
-  float MinValue() const
-  {
-    return mMinValue;
-  }
-
-  float MaxValue() const
-  {
-    return mMaxValue;
-  }
-
   float DefaultValue() const
   {
     return mDefaultValue;
@@ -115,8 +103,6 @@ private:
   nsRefPtr<AudioNode> mNode;
   CallbackType mCallback;
   const float mDefaultValue;
-  const float mMinValue;
-  const float mMaxValue;
 };
 
 }
diff --git a/content/media/webaudio/BiquadFilterNode.cpp b/content/media/webaudio/BiquadFilterNode.cpp
index b494081ce6f..5f07136d407 100644
--- a/content/media/webaudio/BiquadFilterNode.cpp
+++ b/content/media/webaudio/BiquadFilterNode.cpp
@@ -96,18 +96,12 @@ private:
   AudioParamTimeline mGain;
 };
 
-static float
-Nyquist(AudioContext* aContext)
-{
-  return 0.5f * aContext->SampleRate();
-}
-
 BiquadFilterNode::BiquadFilterNode(AudioContext* aContext)
   : AudioNode(aContext)
   , mType(BiquadTypeEnum::LOWPASS)
-  , mFrequency(new AudioParam(this, SendFrequencyToStream, 350.f, 10.f, Nyquist(aContext)))
-  , mQ(new AudioParam(this, SendQToStream, 1.f, 0.0001f, 1000.f))
-  , mGain(new AudioParam(this, SendGainToStream, 0.f, -40.f, 40.f))
+  , mFrequency(new AudioParam(this, SendFrequencyToStream, 350.f))
+  , mQ(new AudioParam(this, SendQToStream, 1.f))
+  , mGain(new AudioParam(this, SendGainToStream, 0.f))
 {
   BiquadFilterNodeEngine* engine = new BiquadFilterNodeEngine(aContext->Destination());
   mStream = aContext->Graph()->CreateAudioNodeStream(engine, MediaStreamGraph::INTERNAL_STREAM);
diff --git a/content/media/webaudio/DelayNode.cpp b/content/media/webaudio/DelayNode.cpp
index 47d98d9678d..96137989e9e 100644
--- a/content/media/webaudio/DelayNode.cpp
+++ b/content/media/webaudio/DelayNode.cpp
@@ -201,7 +201,7 @@ public:
 
 DelayNode::DelayNode(AudioContext* aContext, double aMaxDelay)
   : AudioNode(aContext)
-  , mDelay(new AudioParam(this, SendDelayToStream, 0.0f, 0.0f, float(aMaxDelay)))
+  , mDelay(new AudioParam(this, SendDelayToStream, 0.0f))
 {
   DelayNodeEngine* engine = new DelayNodeEngine(aContext->Destination());
   mStream = aContext->Graph()->CreateAudioNodeStream(engine, MediaStreamGraph::INTERNAL_STREAM);
diff --git a/content/media/webaudio/DynamicsCompressorNode.cpp b/content/media/webaudio/DynamicsCompressorNode.cpp
index b844b88712e..221a9fd6597 100644
--- a/content/media/webaudio/DynamicsCompressorNode.cpp
+++ b/content/media/webaudio/DynamicsCompressorNode.cpp
@@ -113,12 +113,12 @@ private:
 
 DynamicsCompressorNode::DynamicsCompressorNode(AudioContext* aContext)
   : AudioNode(aContext)
-  , mThreshold(new AudioParam(this, SendThresholdToStream, -24.f, -100.f, 0.f))
-  , mKnee(new AudioParam(this, SendKneeToStream, 30.f, 0.f, 40.f))
-  , mRatio(new AudioParam(this, SendRatioToStream, 12.f, 1.f, 20.f))
-  , mReduction(new AudioParam(this, SendReductionToStream, 0.f, -20.f, 0.f))
-  , mAttack(new AudioParam(this, SendAttackToStream, 0.003f, 0.f, 1.f))
-  , mRelease(new AudioParam(this, SendReleaseToStream, 0.25f, 0.f, 1.f))
+  , mThreshold(new AudioParam(this, SendThresholdToStream, -24.f))
+  , mKnee(new AudioParam(this, SendKneeToStream, 30.f))
+  , mRatio(new AudioParam(this, SendRatioToStream, 12.f))
+  , mReduction(new AudioParam(this, SendReductionToStream, 0.f))
+  , mAttack(new AudioParam(this, SendAttackToStream, 0.003f))
+  , mRelease(new AudioParam(this, SendReleaseToStream, 0.25f))
 {
   DynamicsCompressorNodeEngine* engine = new DynamicsCompressorNodeEngine(aContext->Destination());
   mStream = aContext->Graph()->CreateAudioNodeStream(engine, MediaStreamGraph::INTERNAL_STREAM);
diff --git a/content/media/webaudio/GainNode.cpp b/content/media/webaudio/GainNode.cpp
index 67738b8895c..8997fa49a98 100644
--- a/content/media/webaudio/GainNode.cpp
+++ b/content/media/webaudio/GainNode.cpp
@@ -95,7 +95,7 @@ public:
 
 GainNode::GainNode(AudioContext* aContext)
   : AudioNode(aContext)
-  , mGain(new AudioParam(this, SendGainToStream, 1.0f, 0.0f, 1.0f))
+  , mGain(new AudioParam(this, SendGainToStream, 1.0f))
 {
   GainNodeEngine* engine = new GainNodeEngine(aContext->Destination());
   mStream = aContext->Graph()->CreateAudioNodeStream(engine, MediaStreamGraph::INTERNAL_STREAM);
diff --git a/content/media/webaudio/test/test_biquadFilterNode.html b/content/media/webaudio/test/test_biquadFilterNode.html
index de6e029cb57..6a765afc03c 100644
--- a/content/media/webaudio/test/test_biquadFilterNode.html
+++ b/content/media/webaudio/test/test_biquadFilterNode.html
@@ -37,14 +37,8 @@ addLoadEvent(function() {
 
   // Verify default values
   is(filter.type, 0, "Correct default value for type");
-  near(filter.frequency.minValue, 10, "Correct min value for filter frequency");
-  near(filter.frequency.maxValue, context.sampleRate/2, "Correct max value for filter frequency");
   near(filter.frequency.defaultValue, 350, "Correct default value for filter frequency");
-  near(filter.Q.minValue, 0.001, "Correct min value for filter Q");
-  near(filter.Q.maxValue, 1000, "Correct max value for filter Q");
   near(filter.Q.defaultValue, 1, "Correct default value for filter Q");
-  near(filter.gain.minValue, -40, "Correct min value for filter gain");
-  near(filter.gain.maxValue, 40, "Correct max value for filter gain");
   near(filter.gain.defaultValue, 0, "Correct default value for filter gain");
 
   // Make sure that we can set all of the valid type values
diff --git a/content/media/webaudio/test/test_delayNode.html b/content/media/webaudio/test/test_delayNode.html
index 5a5e8a2fd91..f22f0240b54 100644
--- a/content/media/webaudio/test/test_delayNode.html
+++ b/content/media/webaudio/test/test_delayNode.html
@@ -34,24 +34,16 @@ addLoadEvent(function() {
   ok(delay.delayTime, "The audioparam member must exist");
   is(delay.delayTime.value, 0, "Correct initial value");
   is(delay.delayTime.defaultValue, 0, "Correct default value");
-  is(delay.delayTime.minValue, 0, "Correct min value");
-  is(delay.delayTime.maxValue, 1.0, "Correct max value");
   delay.delayTime.value = 0.5;
   is(delay.delayTime.value, 0.5, "Correct initial value");
   is(delay.delayTime.defaultValue, 0, "Correct default value");
-  is(delay.delayTime.minValue, 0, "Correct min value");
-  is(delay.delayTime.maxValue, 1.0, "Correct max value");
 
   var delay2 = context.createDelay(2);
   is(delay2.delayTime.value, 0, "Correct initial value");
   is(delay2.delayTime.defaultValue, 0, "Correct default value");
-  is(delay2.delayTime.minValue, 0, "Correct min value");
-  is(delay2.delayTime.maxValue, 2.0, "Correct max value");
   delay2.delayTime.value = 0.5;
   is(delay2.delayTime.value, 0.5, "Correct initial value");
   is(delay2.delayTime.defaultValue, 0, "Correct default value");
-  is(delay2.delayTime.minValue, 0, "Correct min value");
-  is(delay2.delayTime.maxValue, 2.0, "Correct max value");
 
   expectException(function() {
     context.createDelay(0);
diff --git a/content/media/webaudio/test/test_dynamicsCompressorNode.html b/content/media/webaudio/test/test_dynamicsCompressorNode.html
index 96266647eab..7477d7c4b24 100644
--- a/content/media/webaudio/test/test_dynamicsCompressorNode.html
+++ b/content/media/webaudio/test/test_dynamicsCompressorNode.html
@@ -44,22 +44,6 @@ addLoadEvent(function() {
     near(release.defaultValue, 0.25, "Correct default value for release");
   }
 
-  // Verify min/max values
-  with (compressor) {
-    near(threshold.minValue, -100, "Correct min value for threshold");
-    near(knee.minValue, 0, "Correct min value for knee");
-    near(ratio.minValue, 1, "Correct min value for ratio");
-    near(reduction.minValue, -20, "Correct min value for reduction");
-    near(attack.minValue, 0, "Correct min value for attack");
-    near(release.minValue, 0, "Correct min value for release");
-    near(threshold.maxValue, 0, "Correct max value for threshold");
-    near(knee.maxValue, 40, "Correct max value for knee");
-    near(ratio.maxValue, 20, "Correct max value for ratio");
-    near(reduction.maxValue, 0, "Correct max value for reduction");
-    near(attack.maxValue, 1, "Correct max value for attack");
-    near(release.maxValue, 1, "Correct max value for release");
-  }
-
   source.start(0);
   SimpleTest.executeSoon(function() {
     source.stop(0);
diff --git a/content/media/webaudio/test/test_gainNode.html b/content/media/webaudio/test/test_gainNode.html
index ebec5c4ccfb..51545c9e57a 100644
--- a/content/media/webaudio/test/test_gainNode.html
+++ b/content/media/webaudio/test/test_gainNode.html
@@ -33,13 +33,9 @@ addLoadEvent(function() {
   ok(gain.gain, "The audioparam member must exist");
   is(gain.gain.value, 1.0, "Correct initial value");
   is(gain.gain.defaultValue, 1.0, "Correct default value");
-  is(gain.gain.minValue, 0, "Correct min value");
-  is(gain.gain.maxValue, 1.0, "Correct max value");
   gain.gain.value = 0.5;
   is(gain.gain.value, 0.5, "Correct initial value");
   is(gain.gain.defaultValue, 1.0, "Correct default value");
-  is(gain.gain.minValue, 0, "Correct min value");
-  is(gain.gain.maxValue, 1.0, "Correct max value");
 
   source.start(0);
   SimpleTest.executeSoon(function() {
diff --git a/dom/webidl/AudioParam.webidl b/dom/webidl/AudioParam.webidl
index f3094485ce1..38376f592db 100644
--- a/dom/webidl/AudioParam.webidl
+++ b/dom/webidl/AudioParam.webidl
@@ -14,9 +14,6 @@
 interface AudioParam {
 
     attribute float value;
-    // readonly attribute float computedValue;
-    readonly attribute float minValue;
-    readonly attribute float maxValue;
     readonly attribute float defaultValue;
 
     // Parameter automation.