what you need to use is a multi-band processor ie orban, omia-fm for example.
when doing dab it's very important to maintain precise levels at no higher than 0 DB.(-1 or -2 is best)
a properly set limiter will have a very fast attack time and a fast yet smooth release. (no compressor breathing)
the orban 8900 is excellent but cost prohibited for many small dab's
so a nice little secrete MBL4 software on a windows based pc with high quality audio cards.
this system is allso perfect for lpfm.
here is the link, get mbl4 down the bottom.
http://www.burnill.co.uk/downloads.htmlif you have little knowledge of multi-band processors then use one of the pre-set patches included with the software.
since you have 15 or more adjustments to make and with out a tuned ear or the required calibration equipment you will rip your hair out.