The configuration of distance cluster explosion sounds CfgSoundShaders → ClusterBomb_Exp_Dist_SoundShader uses the same sounds as for the medium ClusterBomb_Exp_Mid_SoundShader
Considering that the game data has its own sounds for distance explosions using the same sounds seems mistake

ClusterBomb_Exp_Mid_SoundShader	ClusterBomb_Exp_Dist_SoundShader (vanilla)	ClusterBomb_Exp_Dist_SoundShader (needed values)

"a3\sounds_f_orange\arsenal\explosives\clusterbomb\cluster_exp_dist_02" - skipped, because it is a duplicate of a tank shell explosion, apparently added by accident to the files