I also used an SSL side-chain to de-ess the vocals. The 902 is a great de-esser, but it only takes away one
frequency. On the board I have a full spectrum, and I use the side-chain to grab other frequencies. I have more
control by using both the SSL and the Dbx. What I do on the SSL is an old trick I learned from engineer and mixer
Barney Perkins, who used to do all those Babyface records, and it makes the vocal sound. Theres no de-esser
that sounds better than this, but its a technique thats complex to explain.
Basically, I route the vocal signal to two separate channels on the SSL, say channel one and channel two, which
are right next to each other. Channel one is my side-chain and works like a de-esser on channel two, which
becomes my actual vocal channel. On channel one Ill set the SSL compressor to a fast attack and also engage a
high-pass filter ie. I filter out all the low end and do extreme EQing of whatever frequencies I want to take
away. I dont cut, I boost these frequencies; +12dB with a very narrow bandwidth, most often around 6-7k, where
most of the esses happen. So channel one accentuates what Im trying to take away! Of course, I take channel
one off the stereo bus, so you dont hear it in the mix.
I then press the Link button to link channel one to channel two on the right. I engage the compressor on channel
two, and what happens is that the more Im bringing up channel one, the more the compressor ducks the
frequencies I dont want on channel two. So my channel one fader becomes my threshold. I take out the bass
frequencies on channel one, because I dont want them to disappear in channel two. With side-chaining, the
frequencies youre accentuating in your side-chain are ducked in the other channel. Ive been part of forums during
which Ive discussed this technique, and people found it very hard to understand. Even the people at SSL have a
hard time understanding why it works! But it does. The key is that you can use compressors either to increase gain
or to create a ceiling ie. they also work like limiters. And if you were to use straight EQing to take away your
esses, you take all the life and presence out of the vocal. But if you de-ess this way, it retains the personality of
the singer; its like he or she is in the room with you.