Similar to the grenade explosion in Half Life 2, it is properly mono and not loud.
DownloadTo install:
1. Go to your Blockland addons folder.
2. Find Weapon_RocketLauncher.zip.
3. Open it, and find tntExplode.wav.
4. Copy this and put it in My Documents.
5. Go back to weapon_RocketLauncher.zip, an delete tntExplode.wav inside the zip.
6. Drag the new explosion into the zip file.
You're done, and this effects event rockets too.
Enjoy.