diff --git a/src/mame/audio/scramble.c b/src/mame/audio/scramble.c
index f1c4b09825a..b0d8b80aafc 100644
--- a/src/mame/audio/scramble.c
+++ b/src/mame/audio/scramble.c
@@ -352,11 +352,11 @@ MACHINE_DRIVER_START( ad2083_audio )
 	MDRV_SPEAKER_STANDARD_MONO("mono")
 	MDRV_SOUND_ADD("ay1", AY8910, 14318000/8)
 	MDRV_SOUND_CONFIG(ad2083_ay8910_interface_1)
-	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.33)
+	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)
 
 	MDRV_SOUND_ADD("ay2", AY8910, 14318000/8)
 	MDRV_SOUND_CONFIG(ad2083_ay8910_interface_2)
-	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.33)
+	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00)
 
 	MDRV_SOUND_ADD("tms", TMS5110A, AD2083_TMS5110_CLOCK)
 	MDRV_SOUND_CONFIG(ad2083_tms5110_interface)
diff --git a/src/mame/drivers/scramble.c b/src/mame/drivers/scramble.c
index d9b104e1378..ba41526f9f5 100644
--- a/src/mame/drivers/scramble.c
+++ b/src/mame/drivers/scramble.c
@@ -957,7 +957,7 @@ static INPUT_PORTS_START( ad2083 )
      * it must be multiplexed by flip line. */
 	PORT_START("IN0")
 	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP )
-	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_UNKNOWN )
+	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_BUTTON2 )
 	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN )
 	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_BUTTON1 )
 	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT )