Thanks for the feedback!!
To clarify, yes I meant my peaks are hitting at -3db. Mix doesn't sound weak to me at all at comparable volume. Was just concerned about the volume difference which, yeah, when all is said & done would probably be about 3db.
I'm not using any limiting because a) I want depth & dynamics in this tune and b) from much of what I've read, I came away thinking that limiting is something that one should avoid during mixing stage, being maybe more of a mastering tool better used by people who know how to use it better than me (also, they probably have better limiters). Maybe I'm wrong?
I have used "sensible gain structure" in so much as I've stuck to the general outline and philosophy expounded by Macc & others in the gain structure / mix moneyshot threads. Found them a couple months ago and found them very very helpful. As such, I have Kicks hitting at -8db, snares at -9db (drum bus at -8db) and bass at -10db. That said, the drums & bass alone got me running right up at -3.2 db in total at the master channel.
All other sounds I've added (of which there are quite a few) I've been very careful to carve out their own space in the frequency spectrum through eq'ing / filtering and panning/positioning within the stereo field. All sounds other than drums & bass have amounted to an additional -0.2db, hence my grand total of -3db. I guess most of it fit in the space between drum hits & bass hits...
I do have fair number of "melody" instruments going and so I have a reasonably full-sounding mix... But I'm happy overall with the balance between elements.
Truth be told, my main loudness constraint really seems to be the loudness of my drums... I don't think I know how to get my kicks and my snare any louder without exceeding 8db-9db their without using limiting and losing depth / dynamics. I have been trying to avoid doing that... Neither compression nor saturation nor distortion seem to help.
In fact, I just removed the bus compressor (waves ssl) from my snare bus because, even at settings so slight that the needle was barely indicating any compressor activity, I felt it was still sucking dynamics from my snares, making them sound flat and blunt while shaving only 0.1-0.2db from overall amplitude... Not a fair trade!!
I have not compared Dynamic Range with 'Router' as suggested by SunkLo, so I'll definitely do that and see what I learn!!
Maybe my expectations were unrealistic to begin with? My tune is kinda like Pangaea-Router meets Flying Lotus-Cosmogramma in reggae-land... But Router is loud and snappy but very minimal while FlyLo Cosmogramma is busy & sonically rich but overall quieter and not as punchy...
You guys have me thinking maybe my mix is supposed to be exactly where it is... I guess I can't have a mix as loud as Pangaea's when I have a fair bit more going on in my tune like Flylo...
Ah well, If I'm lucky and I've done a decent mixing job, maybe an ME would be able to squeeze out an extra db or two beyond just turning the whole thing up +3db to reach 0db...
Encouraging to hear + or - 3db isn't a big deal, though... Wasn't sure as I never had a tune mastered or pressed and have never dj'ed in my life
Thanks for the feedback to my question, gentlemen!! Additional input always welcome, too!!