HI all,

First of all, this is my very first post and I would like to thanks everyone on this forum for their help and for the knowledge they share...

Here's my question / problem:

I have made an old demo 5 years ago and I want to remaster it because it really sounds...crappy.

Back in the days I didn’t have enough space on my computer so had to turn all my songs to mono to make my CD... I didn’t know anything about compression or any mastering tips.

So I want to remaster those old songs to make them sounds better. (At least I have the instrumentals so I can re do all the vocals...)

I only have the final mono mixed tracks.
So what I'm trying to do right now is this and i would like to know if its a good trick or if you have better ones to give to me:

First, I took my mono track and I have duplicated it 5 times in my sequencer so I can separate most frequency. It gives me the chance to play with some panning to give me some fake stereo sound.
keep the bass in the middle, the highs panned on the right, etc.
It gives me the chance to make some compressions on each group of frequencies. Added some reverbs in the highs and pumped the bass / kick drum around 80 Hz.

When I listen to the result, it has a wider sound but not enough for me.
Finally, i add my mono track on the top of it to keep the sound I little more glued together and I make a final compression on the master bus.

The result is better than the original (which definitively sucks) but could be better.

Any tricks on this?
Is my solution really bad? (I'm definitively not a pro at mastering)

Thanks a lot guys.