diff --git a/game_api.txt b/game_api.txt
index 7c3c04cd..a6f4da7c 100644
--- a/game_api.txt
+++ b/game_api.txt
@@ -348,6 +348,7 @@ TNT API
  * `description` A description for your TNT.
  * `radius` The radius within which the TNT can destroy nodes. The default is 3.
  * `damage_radius` The radius within which the TNT can damage players and mobs. By default it is twice the `radius`.
+ * `sound` The sound played when explosion occurs. By default it is `tnt_explode`.
  * `disable_drops` Disable drops. By default it is set to false.
  * `ignore_protection` Don't check `minetest.is_protected` before removing a node.
  * `ignore_on_blast` Don't call `on_blast` even if a node has one.
diff --git a/mods/tnt/init.lua b/mods/tnt/init.lua
index 0326000b..18ca304e 100644
--- a/mods/tnt/init.lua
+++ b/mods/tnt/init.lua
@@ -384,7 +384,9 @@ end
 function tnt.boom(pos, def)
 	local meta = minetest.get_meta(pos)
 	local owner = meta:get_string("owner")
-	minetest.sound_play("tnt_explode", {pos = pos, gain = 1.5, max_hear_distance = 2*64})
+	local sound = def.sound or "tnt_explode"
+	minetest.sound_play(sound, {pos = pos, gain = 1.5,
+			max_hear_distance = math.min(def.radius * 20, 128)})
 	minetest.set_node(pos, {name = "tnt:boom"})
 	local drops, radius = tnt_explode(pos, def.radius, def.ignore_protection,
 			def.ignore_on_blast, owner)