diff --git a/modulation/stereo_encoder.c b/modulation/stereo_encoder.c
index c7f5740..6289ad6 100644
--- a/modulation/stereo_encoder.c
+++ b/modulation/stereo_encoder.c
@@ -28,7 +28,7 @@ void init_stereo_encoder(StereoEncoder* st, uint8_t multiplier, Oscillator* osc,
     st->pilot_volume = pilot_volume;
     st->audio_volume = audio_volume;
 #ifdef STEREO_SSB
-    init_delay_line(&st->delay, 15); // 7*2+1
+    init_delay_line(&st->delay, STEREO_SSB*2+1);
 #endif
 }
 
@@ -55,7 +55,7 @@ float stereo_encode(StereoEncoder* st, uint8_t enabled, float left, float right)
     float signalx2 = get_oscillator_sin_multiplier_ni(st->osc, st->multiplier * 2.0f);
 
 #ifdef STEREO_SSB
-    float stereo = (crealf(stereo_hilbert) * signalx2cos) - (cimagf(stereo_hilbert) * signalx2);
+    float stereo = (crealf(stereo_hilbert) * signalx2cos) + (cimagf(stereo_hilbert) * signalx2);
     return (mid*half_audio) + (signalx1*st->pilot_volume) + (stereo * half_audio);
 #else
     return (mid*half_audio) + (signalx1*st->pilot_volume) + ((side*signalx2) * half_audio);
diff --git a/modulation/stereo_encoder.h b/modulation/stereo_encoder.h
index 04564c5..83e1916 100644
--- a/modulation/stereo_encoder.h
+++ b/modulation/stereo_encoder.h
@@ -1,6 +1,6 @@
 #pragma once
 
-#define STEREO_SSB
+#define STEREO_SSB 12
 
 #include <stdint.h>
 #include "../dsp/oscillator.h"
diff --git a/src/fm95.c b/src/fm95.c
index 4a47f77..70721d5 100644
--- a/src/fm95.c
+++ b/src/fm95.c
@@ -493,7 +493,7 @@ void init_runtime(FM95_Runtime* runtime, const FM95_Config config) {
 	}
 
 	#ifdef STEREO_SSB
-	runtime->stereo_hilbert = firhilbf_create(7, 60);
+	runtime->stereo_hilbert = firhilbf_create(STEREO_SSB, 80);
 	#endif
 
 	if(config.preemphasis != 0) {