CD Mastering and Mastering for Digital Release - Part 2 of 3
Part 2 – Tips for getting a great mixLimiting, Compression, Effects and Outboard
With all the new technology out there and the advent of plug-ins there is a temptation to throw effects and outboard on everything these days. Going back only a few years ago, even the biggest studios only had a handful of compressor and reverb channels available, now you can literally have hundreds in a track (if so inclined).
But just because you can doesn’t necessarily mean you should. Usedwell and sparingly outboard and effects can be used to deadly effect, used badly and they cause muddiness, mush and cause the track to lose impact.
Limiting and Compression - What not to do
Limiting on the master channel should only really be used in the mastering stage to catch any rouge peaks here and there. Using it on the master channel when mixing is lazy and will affect the quality of the mix in a bad way, it also complicates and slows down the final mix down process.
If you are in the habit of limiting your mixes get out of the habit now – put down the limiter and walk away. You should adjust the channels and the over-all mix to keep everything below 0 db.
This is what happens when limiters are (ab)used on the master channel - note the flat clipped point on the peak:

Zoomed in image of brick-wall limited mixIf you must use compression on the master channel make sure it's really light and used to glue the mix together rather than make the over-all mix louder.
We are only talking about the master channel here, not the channels – compression when used well on the channels will make for a great mix.
Compression as with so many other things in production is best used lightly, if you can’t hear the compressor open and close and the channel is still sounding better with it on – you’ve got the right
setting.
When we get mixes that have been brick-wall limited or over-compressed it really limits what we can do in the mastering process. We can always add compression in the mastering stage but if the track is delivered with compression already on there we can’t take it away.
Should I use a multiband compressor?
If you are thinking about using multiband compression in the mix stage this points to a problem
in the mix that should be fixed in other ways, the mastering engineer can add multiband compression to a mix if it needs it.
Coming up:
- Part 3 - Preparing a mix for mastering
- Copyright 2008, Luke Pepper, All Rights Reserved.
No part of this document shall be reproduced without prior consent from the copyright owner.
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