diff --git a/Sounds/Cockpit/relay-apu-old1.wav b/Sounds/Cockpit/relay-apu-old1.wav new file mode 100644 index 00000000..cead56d1 Binary files /dev/null and b/Sounds/Cockpit/relay-apu-old1.wav differ diff --git a/Sounds/Cockpit/relay-apu.wav b/Sounds/Cockpit/relay-apu.wav index cead56d1..2db111c6 100644 Binary files a/Sounds/Cockpit/relay-apu.wav and b/Sounds/Cockpit/relay-apu.wav differ