I know this question gets asked a lot, but neither google/wiki nor stack exchange have provided me with decisive information, and having to change voice so often really confuses me.
I'm singing since a few years now; I used to sing in a church music choir of my local conservatory when I was around 16-17. I quit for a year, and then started singing again in my Universities choir when I moved. I'm now almost 21 and, though I was assigned to every male singing voice at least once, I still don't know where my range really is.
Both choirs I sang in were SATB, usually each voice was split into a higher and a lower one (etc. high tenor, lower tenor). In the church choir I was assigned to lower bass, the past year I sang as either low tenor or -more rarely- high tenor; but recently I have been reassigned to the higher bass. My range isn't ideal and I have had problems reaching the higher/lower notes in every voice I sang. I'd say I'm most comfortable between F#3 and C#4, which isn't really great, but I usually hit a A2 and a F4 if I must...I think it's still chest voice and not falsetto.
Now, the ranges Wikipedia cites are just too much for me, for any voice; whereas the ranges in the recent pieces I sang (musicals, a bit of pop, and Mahler 2nd) had F#2 as lowest note for the higher bass voice and A#4, I think, as the highest note for the lower tenor. I can try as much as I want, but I can never sing lower than A2 (unless I'm severly throat sore and such), but with a good warming up and a bit of luck I hit a G4 singing very loudly and straining my voice a lot. When I started singing I couldn't even reach E4 with chest by straining, but my lowest note is still A. I don't know if this is range related, but my voice is also quite feeble and not very powerful, especially when I sing higher notes. It's still loud enough, just not very full.
I hope someone can tell me on what I should concentrate, whether to try and sing higher or lower and how to do so, because I'm really confused right now.
Note: the conductors of the choirs I sing and sang in sometimes gave us hints and help in extra sessions about posture, muscles and such, but I never got any lengthy vocal training in regular intervals.