If it can help, here is a bassdrop I create for the last project I mixed.
http://dl.dropbox.com/u/6120012/TRUIESub.wav
It's pretty short, and was made to fit to the tempo/song (and it's intentionally pretty dark sounding).
It's also tuned in C, and you need to cut the blank at the beginning.
But I honestly think you'll have better results if you create it yourself.
If someone interested, this is how I do :
- First, I use this free VSTi :
http://www.kvraudio.com/get/3107.html
- Create a midi track that feed Subatomic (I use the preset "Short release sub synth", and tweak it if necessary).
- Open the piano roll, and create a midi note that fit the desired lenght of your sub drop, and that also fit the tuning of your song.
- Automate the pitch within the midi track, in order to reach 1 octave down at the end.
- When your satisfied with the lenght / shape, bounce it to audio.
Then, processing :
- One important thing is to not lock it perfectly on the grid/kick. Generaly my bassdrop start JUST AFTER the kick transient, so that they don't overpower each other. You'll have better impact at the end.
- You can use a slight distortion/overdrive, to make it more fat and audible.
- You can use a LP filter, for example at 2-300 Hz, if you want it to sound less noticable.
- Then, a bit of compression. The idea is to create some attack on your bass drop. I use 20-30ms attack, fast release and around 5-6 dB of gain reduction.
And that's it !
Now blend it with your tracks.
Be very careful to not mix it too loud, especially if you can't monitor the very low end properly.
A spectrum analyzer can be helpful ; you can also check from time to time with a heavy limiter on the master bus.
If it's pumping too much, you mixed it too loud.
