diff --git a/sfm/sfm_webapp.html b/sfm/sfm_webapp.html
index 7925c83..019f900 100644
--- a/sfm/sfm_webapp.html
+++ b/sfm/sfm_webapp.html
@@ -2392,6 +2392,11 @@ async function loadHistory() {
       <td class="td-dim">${(() => {
         const m = ev.mic_ppv == null ? null : Number(ev.mic_ppv);
         if (m == null || !isFinite(m) || m <= 0) return '—';
+        // BW (.AB0*/.N00) stores mic_ppv as psi → convert to dBL.
+        // Thor IDF (.IDFH/.IDFW) already stores dBL → display directly.
+        const fn = (ev.blastware_filename || '').toUpperCase();
+        const isThor = fn.endsWith('.IDFH') || fn.endsWith('.IDFW');
+        if (isThor) return m.toFixed(1) + ' dBL';
         return (20 * Math.log10(m / DBL_REF)).toFixed(1) + ' dBL';
       })()}</td>
       <td class="td-text">${ev.project ?? '—'}</td>
@@ -2454,11 +2459,20 @@ function _renderSidecar(data) {
 
   document.getElementById('sc-title').textContent = `Event — ${bw.filename || ev.waveform_key || 'unknown'}`;
 
-  const fmtPpv = v => (v == null ? '—' : Number(v).toFixed(5) + ' in/s');
+  const fmtPpv = v => {
+    if (v == null) return '—';
+    const n = Number(v);
+    return isFinite(n) ? n.toFixed(5) + ' in/s' : String(v);
+  };
   const fmtMic = v => {
-    if (v == null || v <= 0) return '—';
-    const dbl = 20 * Math.log10(v / DBL_REF);
-    return `${dbl.toFixed(1)} dBL  (${v.toExponential(2)} psi)`;
+    if (v == null) return '—';
+    const n = Number(v);
+    if (!isFinite(n) || n <= 0) return '—';
+    // Source-aware: Thor IDF imports store mic as dB(L); BW imports store
+    // it as psi.  `src` is in the outer scope from _renderSidecar().
+    if ((src.kind || '') === 'idf-import') return `${n.toFixed(1)} dBL`;
+    const dbl = 20 * Math.log10(n / DBL_REF);
+    return `${dbl.toFixed(1)} dBL  (${n.toExponential(2)} psi)`;
   };
 
   document.getElementById('sc-f-serial').textContent   = ev.serial          || '—';