diff --git a/dsp/src/lockin.rs b/dsp/src/lockin.rs
index b2f38c1..6ebf4cb 100644
--- a/dsp/src/lockin.rs
+++ b/dsp/src/lockin.rs
@@ -7,14 +7,6 @@ pub struct Lockin {
 }
 
 impl Lockin {
-    /// Create a new Lockin with given IIR coefficients.
-    pub fn new() -> Self {
-        let lp = Lowpass::default();
-        Self {
-            state: [lp.clone(), lp],
-        }
-    }
-
     /// Update the lockin with a sample taken at a given phase.
     /// The lowpass has a gain of `1 << k`.
     pub fn update(&mut self, sample: i16, phase: i32, k: u8) -> Complex<i32> {
diff --git a/src/bin/lockin-external.rs b/src/bin/lockin-external.rs
index c0e6cae..9b29033 100644
--- a/src/bin/lockin-external.rs
+++ b/src/bin/lockin-external.rs
@@ -34,8 +34,6 @@ const APP: () = {
                 + design_parameters::SAMPLE_BUFFER_SIZE_LOG2,
         );
 
-        let lockin = Lockin::new();
-
         // Enable ADC/DAC events
         stabilizer.adcs.0.start();
         stabilizer.adcs.1.start();
@@ -59,7 +57,7 @@ const APP: () = {
             timestamper: stabilizer.timestamper,
 
             pll,
-            lockin,
+            lockin: Lockin::default(),
         }
     }
 
diff --git a/src/bin/lockin-internal.rs b/src/bin/lockin-internal.rs
index cfa3115..c4d5bd6 100644
--- a/src/bin/lockin-internal.rs
+++ b/src/bin/lockin-internal.rs
@@ -28,8 +28,6 @@ const APP: () = {
         // Configure the microcontroller
         let (mut stabilizer, _pounder) = hardware::setup(c.core, c.device);
 
-        let lockin = Lockin::new();
-
         // Enable ADC/DAC events
         stabilizer.adcs.1.start();
         stabilizer.dacs.0.start();
@@ -39,7 +37,7 @@ const APP: () = {
         stabilizer.adc_dac_timer.start();
 
         init::LateResources {
-            lockin,
+            lockin: Lockin::default(),
             afes: stabilizer.afes,
             adc: stabilizer.adcs.1,
             dacs: stabilizer.dacs,