diff --git a/app/static/js/services/soundfontPlayer.js b/app/static/js/services/soundfontPlayer.js
index c65387d..d684e93 100644
--- a/app/static/js/services/soundfontPlayer.js
+++ b/app/static/js/services/soundfontPlayer.js
@@ -98,7 +98,7 @@
 
                     _settingsPtr = _fluidModule._new_fluid_settings();
                     _fluidModule._fluid_settings_setnum(_settingsPtr, "synth.sample-rate", _audioCtx.sampleRate || 44100);
-                    _fluidModule._fluid_settings_setnum(_settingsPtr, "synth.gain", 0.5);
+                    _fluidModule._fluid_settings_setnum(_settingsPtr, "synth.gain", 2.0);
                     _fluidModule._fluid_settings_setnum(_settingsPtr, "synth.polyphony", 256);
                     _fluidModule._fluid_settings_setint(_settingsPtr, "synth.verbose", 1);
                     _fluidModule._fluid_settings_setint(_settingsPtr, "synth.ladspa.active", 0);
@@ -492,17 +492,24 @@
         function pushFrame() {
             if (!Module || !synth || !node) return;
             try {
+                var lpb = leftPtr >> 2;
+                var rpb = rightPtr >> 2;
+                Module.HEAPF32.fill(0, lpb, lpb + block);
+                Module.HEAPF32.fill(0, rpb, rpb + block);
                 Module._fluid_synth_write_float(synth, block, leftPtr, 0, 1, rightPtr, 0, 1);
-                var leftArr = new Float32Array(Module.HEAPF32.subarray(leftPtr >> 2, (leftPtr >> 2) + block));
-                var rightArr = new Float32Array(Module.HEAPF32.subarray(rightPtr >> 2, (rightPtr >> 2) + block));
+                var leftArr = new Float32Array(Module.HEAPF32.subarray(lpb, lpb + block));
+                var rightArr = new Float32Array(Module.HEAPF32.subarray(rpb, rpb + block));
                 var peak = 0;
+                var avg = 0;
                 for (var si = 0; si < leftArr.length; si++) {
                     var abs = leftArr[si] > 0 ? leftArr[si] : -leftArr[si];
                     if (abs > peak) peak = abs;
+                    avg += abs;
                 }
-                if (peak > 0.001 && !_dbgPeak) {
+                avg /= leftArr.length;
+                if (!_dbgPeak) {
                     _dbgPeak = 1;
-                    console.log("[SonicSF] FIRST AUDIO FRAME peak:", peak);
+                    console.log("[SonicSF] FRAME peak:", peak.toFixed(6), "avg:", avg.toFixed(8), "gain check:", Module._fluid_synth_get_gain ? Module._fluid_synth_get_gain(synth) : 'N/A');
                 }
                 node.port.postMessage({ type: 'PCM', L: leftArr, R: rightArr }, [leftArr.buffer, rightArr.buffer]);
                 queueDepth++;