Index: firmware/App/Services/AlarmMgmt.c
===================================================================
diff -u -rac05209d7b6c65b22359754eced5ad2672d3092a -rab529a77ce03051a5940ee59b7542837778f8788
--- firmware/App/Services/AlarmMgmt.c	(.../AlarmMgmt.c)	(revision ac05209d7b6c65b22359754eced5ad2672d3092a)
+++ firmware/App/Services/AlarmMgmt.c	(.../AlarmMgmt.c)	(revision ab529a77ce03051a5940ee59b7542837778f8788)
@@ -83,7 +83,7 @@
 /// alarm user recovery actions enabled flags.
 static BOOL alarmUserRecoveryActionEnabled[ NUMBER_OF_ALARM_USER_ACTIONS ];
 
-static U32 alarmAudioVolumeLevel = 2; //MAX_ALARM_VOLUME_LEVEL;          ///< Set alarm audio volume level (0..7).
+static U32 alarmAudioVolumeLevel = 3; //MIN_ALARM_VOLUME_ATTENUATION;          ///< Set alarm audio volume attenuation level (0..4 - lower level = higher gain).
 
 // ********** private function prototypes **********
 
@@ -560,14 +560,14 @@
 * The setAlarmAudioVolume function sets the current alarm audio volume level.
 * @details Inputs: none
 * @details Outputs: alarmAudioVolumeLevel
-* @param volumeLevel level of volume requested (0..7)
+* @param volumeLevel level of volume requested (1..5)
 * @return none
 *************************************************************************/
 void setAlarmAudioVolume( U32 volumeLevel )
 {
-    if ( volumeLevel <= MAX_ALARM_VOLUME_LEVEL )
-    {
-        alarmAudioVolumeLevel = volumeLevel;
+    if ( ( volumeLevel > 0 ) && ( volumeLevel <= MAX_ALARM_VOLUME_LEVEL ) )
+    {   // convert volume level to attenuation level
+        alarmAudioVolumeLevel = MAX_ALARM_VOLUME_LEVEL - volumeLevel;
     }
 }
 
Index: firmware/App/Services/AlarmMgmt.h
===================================================================
diff -u -rdf41331377d5da437e853327019c17c58e3af775 -rab529a77ce03051a5940ee59b7542837778f8788
--- firmware/App/Services/AlarmMgmt.h	(.../AlarmMgmt.h)	(revision df41331377d5da437e853327019c17c58e3af775)
+++ firmware/App/Services/AlarmMgmt.h	(.../AlarmMgmt.h)	(revision ab529a77ce03051a5940ee59b7542837778f8788)
@@ -37,7 +37,9 @@
 /// Interval (in ms) at which alarm lamp and audio control will be executed.
 #define ALARM_LAMP_AND_AUDIO_CONTROL_INTERVAL_MS        250
 
-#define MAX_ALARM_VOLUME_LEVEL                          7
+#define MAX_ALARM_VOLUME_LEVEL                          5
+#define MAX_ALARM_VOLUME_ATTENUATION                    4
+#define MIN_ALARM_VOLUME_ATTENUATION                    0
 
 /// Enumeration of alarm actions.
 typedef enum Alarm_Actions
Index: firmware/App/Services/FPGA.c
===================================================================
diff -u -rac05209d7b6c65b22359754eced5ad2672d3092a -rab529a77ce03051a5940ee59b7542837778f8788
--- firmware/App/Services/FPGA.c	(.../FPGA.c)	(revision ac05209d7b6c65b22359754eced5ad2672d3092a)
+++ firmware/App/Services/FPGA.c	(.../FPGA.c)	(revision ab529a77ce03051a5940ee59b7542837778f8788)
@@ -299,7 +299,7 @@
     memset( &fpgaHeader, 0, sizeof(FPGA_HEADER_T) );
     memset( &fpgaSensorReadings, 0, sizeof(FPGA_SENSORS_T) );
     memset( &fpgaActuatorSetPoints, 0, sizeof(FPGA_ACTUATORS_T) );
-    fpgaActuatorSetPoints.AlarmControl = (U08)MAX_ALARM_VOLUME_LEVEL << 2;  // start alarm audio volume at maximum
+    fpgaActuatorSetPoints.AlarmControl = (U08)MIN_ALARM_VOLUME_ATTENUATION << 2;  // start alarm audio volume at maximum
 
     // initialize fpga comm buffers
     memset( &fpgaWriteCmdBuffer, 0, FPGA_WRITE_CMD_BUFFER_LEN );
@@ -1053,14 +1053,23 @@
  * The setAlarmAudioState function sets the fpga audio control to the given
  * state and volume.
  * @details Inputs: none
- * @details Outputs: alarm audio state and amplification gain set
- * @param state the state of alarm audio to command
- * @param volumeLevel the amount of amplification gain to command
+ * @details Outputs: alarm audio state and attenuation set
+ * @param state the state of alarm audio to command:
+ *          0 - No alarm tone
+ *          1 - Low priority alarm tone (c e)
+ *          2 - Medium priority alarm tone (c f# c)
+ *          3 - High priority alarm tone (c f# c - c f#)
+ * @param volumeLevel the level of attenuation to command (0..4)
+ *          4 - 3 dB gain
+ *          3 - 6 dB gain
+ *          2 - 9 dB gain
+ *          1 - 12 dB gain
+ *          0 - 15 dB gain
  * @return none
  *************************************************************************/
 void setAlarmAudioState( ALARM_PRIORITY_T state, U32 volumeLevel )
 {
-    if ( state < NUM_OF_ALARM_PRIORITIES && volumeLevel <= MAX_ALARM_VOLUME_LEVEL )
+    if ( state < NUM_OF_ALARM_PRIORITIES && volumeLevel <= MAX_ALARM_VOLUME_ATTENUATION )
     {
         U08 audioCmd = (U08)state;
 
@@ -1072,7 +1081,7 @@
         U08 audioCmd = (U08)ALARM_PRIORITY_HIGH;
 
         // set alarm audio to high priority, max volume for safety since s/w seems to be having trouble setting audio correctly
-        audioCmd |= ( (U08)MAX_ALARM_VOLUME_LEVEL << 2 );
+        audioCmd |= ( (U08)MIN_ALARM_VOLUME_ATTENUATION << 2 );
         fpgaActuatorSetPoints.AlarmControl = audioCmd;
         // s/w fault to indicate issue w/ s/w
         SET_ALARM_WITH_2_U32_DATA( ALARM_ID_HD_SOFTWARE_FAULT, SW_FAULT_ID_FPGA_INVALID_ALARM_AUDIO_PARAM, volumeLevel )