diff --git a/ext/ladspa/gstladspa.c b/ext/ladspa/gstladspa.c
index ea282bb44f..c01e29f457 100644
--- a/ext/ladspa/gstladspa.c
+++ b/ext/ladspa/gstladspa.c
@@ -82,7 +82,6 @@ gst_ladspa_base_init (gpointer g_class)
   GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
   GstSignalProcessorClass *gsp_class = GST_SIGNAL_PROCESSOR_CLASS (g_class);
   GstElementDetails *details;
-  GstAudioChannelPosition mono_position = GST_AUDIO_CHANNEL_POSITION_FRONT_MONO;
   LADSPA_Descriptor *desc;
   guint j, audio_in_count, audio_out_count, control_in_count, control_out_count;
   gchar *klass_tags;
@@ -126,10 +125,10 @@ gst_ladspa_base_init (gpointer g_class)
 
       if (LADSPA_IS_PORT_INPUT (p))
         gst_signal_processor_class_add_pad_template (gsp_class, name,
-            GST_PAD_SINK, gsp_class->num_audio_in++, 1, &mono_position);
+            GST_PAD_SINK, gsp_class->num_audio_in++, 1);
       else
         gst_signal_processor_class_add_pad_template (gsp_class, name,
-            GST_PAD_SRC, gsp_class->num_audio_out++, 1, &mono_position);
+            GST_PAD_SRC, gsp_class->num_audio_out++, 1);
 
       g_free (name);
     } else if (LADSPA_IS_PORT_CONTROL (p)) {
diff --git a/ext/lv2/gstlv2.c b/ext/lv2/gstlv2.c
index 7610cd8450..4f6ffe05af 100644
--- a/ext/lv2/gstlv2.c
+++ b/ext/lv2/gstlv2.c
@@ -179,7 +179,6 @@ gst_lv2_base_init (gpointer g_class)
   SLV2Values values, sub_values;
   GstLV2Group *group = NULL;
   GstAudioChannelPosition position = GST_AUDIO_CHANNEL_POSITION_INVALID;
-  GstAudioChannelPosition mono_position = GST_AUDIO_CHANNEL_POSITION_FRONT_MONO;
   GstAudioChannelPosition *positions = NULL;
   guint j, in_pad_index = 0, out_pad_index = 0;
   gchar *klass_tags;
@@ -296,6 +295,11 @@ gst_lv2_base_init (gpointer g_class)
   gsp_class->num_control_in = klass->control_in_ports->len;
   gsp_class->num_control_out = klass->control_out_ports->len;
 
+  /* FIXME: see bug #601775
+   * we should set the positions in gst_signal_processor_setup vmethod
+   * but this should pass the caps then as a parameter
+   */
+
   /* add input group pad templates */
   for (j = 0; j < gsp_class->num_group_in; ++j) {
     group = &g_array_index (klass->in_groups, GstLV2Group, j);
@@ -304,8 +308,8 @@ gst_lv2_base_init (gpointer g_class)
     }
 
     gst_signal_processor_class_add_pad_template (gsp_class,
-        slv2_value_as_string (group->symbol),
-        GST_PAD_SINK, j, group->ports->len, positions);
+        slv2_value_as_string (group->symbol), GST_PAD_SINK, j, group->ports->len
+        /*, positions */ );
 
     if (group->has_roles) {
       free (positions);
@@ -321,8 +325,8 @@ gst_lv2_base_init (gpointer g_class)
     }
 
     gst_signal_processor_class_add_pad_template (gsp_class,
-        slv2_value_as_string (group->symbol),
-        GST_PAD_SRC, j, group->ports->len, positions);
+        slv2_value_as_string (group->symbol), GST_PAD_SRC, j, group->ports->len
+        /*, positions */ );
 
     if (group->has_roles) {
       free (positions);
@@ -338,7 +342,7 @@ gst_lv2_base_init (gpointer g_class)
     const gchar *name =
         slv2_value_as_string (slv2_port_get_symbol (lv2plugin, port));
     gst_signal_processor_class_add_pad_template (gsp_class, name, GST_PAD_SINK,
-        j, 1, &mono_position);
+        j, 1);
   }
 
   /* add non-grouped output port pad templates */
@@ -349,7 +353,7 @@ gst_lv2_base_init (gpointer g_class)
     const gchar *name =
         slv2_value_as_string (slv2_port_get_symbol (lv2plugin, port));
     gst_signal_processor_class_add_pad_template (gsp_class, name, GST_PAD_SRC,
-        j, 1, &mono_position);
+        j, 1);
   }
 
   /* construct the element details struct */
diff --git a/gst-libs/gst/signalprocessor/gstsignalprocessor.c b/gst-libs/gst/signalprocessor/gstsignalprocessor.c
index 299f8b303f..b474f0578a 100644
--- a/gst-libs/gst/signalprocessor/gstsignalprocessor.c
+++ b/gst-libs/gst/signalprocessor/gstsignalprocessor.c
@@ -96,8 +96,7 @@ gst_signal_processor_pad_template_get_type (void)
  */
 void
 gst_signal_processor_class_add_pad_template (GstSignalProcessorClass * klass,
-    const gchar * name, GstPadDirection direction, guint index, guint channels,
-    const GstAudioChannelPosition * pos)
+    const gchar * name, GstPadDirection direction, guint index, guint channels)
 {
   GstPadTemplate *new;
   GstCaps *caps;
@@ -110,8 +109,9 @@ gst_signal_processor_class_add_pad_template (GstSignalProcessorClass * klass,
       "endianness", G_TYPE_INT, G_BYTE_ORDER,
       "width", G_TYPE_INT, 32, "channels", G_TYPE_INT, channels, NULL);
 
-  if (pos)
-    gst_audio_set_caps_channel_positions_list (caps, pos, channels);
+  /*if (pos)
+     gst_audio_set_caps_channel_positions_list (caps, pos, channels);
+   */
 
   new = g_object_new (GST_TYPE_SIGNAL_PROCESSOR_PAD_TEMPLATE,
       "name", name, "name-template", name,
diff --git a/gst-libs/gst/signalprocessor/gstsignalprocessor.h b/gst-libs/gst/signalprocessor/gstsignalprocessor.h
index e2e616166b..b5753b47a5 100644
--- a/gst-libs/gst/signalprocessor/gstsignalprocessor.h
+++ b/gst-libs/gst/signalprocessor/gstsignalprocessor.h
@@ -132,8 +132,7 @@ struct _GstSignalProcessorClass {
 
 GType gst_signal_processor_get_type (void);
 void gst_signal_processor_class_add_pad_template (GstSignalProcessorClass *klass,
-    const gchar *name, GstPadDirection direction, guint index, guint channels,
-    const GstAudioChannelPosition *pos);
+    const gchar *name, GstPadDirection direction, guint index, guint channels);