diff --git a/dsp/src/iir_int.rs b/dsp/src/iir_int.rs
index 5ac75f5..c7dfe56 100644
--- a/dsp/src/iir_int.rs
+++ b/dsp/src/iir_int.rs
@@ -49,9 +49,9 @@ impl Coeff for Vec5 {
 #[derive(Copy, Clone, Default, Debug, MiniconfAtomic, Deserialize)]
 pub struct IIR {
     pub ba: Vec5,
-    // pub y_offset: i32,
-    // pub y_min: i32,
-    // pub y_max: i32,
+    pub y_offset: i32,
+    pub y_min: i32,
+    pub y_max: i32,
 }
 
 impl IIR {
@@ -76,9 +76,9 @@ impl IIR {
         // Store x0            x0 x1 x2 y1 y2
         xy[0] = x0;
         // Compute y0 by multiply-accumulate
-        let y0 = macc_i32(0, xy, &self.ba, IIR::SHIFT);
+        let y0 = macc_i32(self.y_offset, xy, &self.ba, IIR::SHIFT);
         // Limit y0
-        // let y0 = y0.max(self.y_min).min(self.y_max);
+        let y0 = y0.max(self.y_min).min(self.y_max);
         // Store y0            x0 x1 y0 y1 y2
         xy[n / 2] = y0;
         y0