diff --git a/src/sound/snd_sb.c b/src/sound/snd_sb.c
index a82ee21d3..2365419b1 100644
--- a/src/sound/snd_sb.c
+++ b/src/sound/snd_sb.c
@@ -391,10 +391,7 @@ sbpro_filter_cd_audio(int channel, double *buffer, void *priv)
     double                   cd     = channel ? mixer->cd_r : mixer->cd_l;
     double                   master = channel ? mixer->master_r : mixer->master_l;
 
-    if (mixer->output_filter)
-        c = (sb_iir(2, channel, *buffer) * cd) / 3.9;
-    else
-        c = (*buffer * cd) / 3.0;
+    c = (*buffer * cd) / 3.0;
     *buffer = c * master;
 }
 
@@ -602,10 +599,7 @@ sb16_awe32_filter_cd_audio(int channel, double *buffer, void *priv)
     double                   bass_treble;
     double                   output_gain = (channel ? mixer->output_gain_R : mixer->output_gain_L);
 
-    if (mixer->output_filter)
-        c = (low_fir_sb16(2, channel, *buffer) * cd) / 3.0;
-    else
-        c = ((*buffer) * cd) / 3.0;
+    c = ((*buffer) * cd) / 3.0;
     c *= master;
 
     /* This is not exactly how one does bass/treble controls, but the end result is like it.