[sparqee]

If the bass sounds good on your monitors but then is too loud on other playback systems that means that your monitors are light on the bass. Your best solution is to update your monitoring system to achieve a flatter response. Perhaps a sub woofer? Some people use EQ on their room but many people will tell you there are problems with that. I have no personal experience with that.

I've tried using spectrum analyzers to try and visually tweak the low end but it never worked for me. The low end is just tricky. You hear many people say that. Good speakers and good ears is the usual solution. Never the less you can learn certain things by using a spectrum analyzer. There are some out there that will allow you to overlay the graph of two separate signals so you can compare the frequency graph of your mix to the graph of your favorite commercial mix. It can be educational.

p.s. there is also the Waves RenBass plugin which adds low harmonics to your sound. This has the effect of fooling the ear into thinking there are low fundamentals that are not actually there.