Apart from what's already been mentioned, I'd say use some light compression to make sure that you don't overload the input of your deck. Tambourines are REALLY dynamic and a little compression, peak limiting or both can help keep things in check.
With a tambourine, you're mostly interested in the high-end part, so I usually roll off as much low end as I can. You'll have to experiment and see how much of the "smack" of hitting the tambourine you want to keep. This smack will be in the mids. If the tambourine is mostly alone and is partly responsible for keeping time (in a section without drums, for example), you may need more of these mids. If, on the other hand, it's part of a thick mix and is just there for high-end "jangle" (like the chorus of a poppy song), you can afford to lose more of the mids .
Tambourines vary greatly in terms of the tone they produce. The D-shaped Rhythm Tech tambourines I've used are really dark and "clanky" sounding, but I have an LP tambourine that I bought that's VERY bright and really gets a great sound. Depends on the sound you're after, but I like a really bright tambourine.
Just a little light gating can help clean up those unwanted jangles between hits if you're only hitting on "2" of the measure, for example. Sometimes in sparse parts like that it's hard to keep your hand still enough and unwanted jangles can show up between hits.
I also highly recommend condensers for tambourine, and I noticed a HUGE improvement in the tambourine sound when I went to a stand-alone mic preamp as opposed to just running into the preamps of my mixer. I was getting a fairly "squashed" sound from the built-in preamps, but
the ART Tube Pac preamp I bought gives me a much more "airy" or "open" tambourine sound. I think it's because tambourines have a very sharply peaked sound spike pattern that's VERY dynamic. It's hard for a cheaper mic preamp to capture the nuances in something that dramatic.
Good luck!
Charles Thomas - Who did a LOT of tambourine recording this last Fall.
[This message has been edited by CharlesThomas (edited 07-11-2000).]