Do you mean that it is lower in terms of volume? If so download any audio or video manipulation software (audacity, not sure but maybe windows movie maker, vegas etc. will work but preferably audacity) and import the clip you want to sound louder and just crank up the volume. I know it may be a bit tedious imprting/exporting with larger clips/files but it can be done within 10-15 minutes. I recommend you use similair mics or find out if they can be edited towards user preferences if the editing process becomes too long.