I'd just stick with the basics, like Jonathan suggests.
Is it an Alpine deck?
Play with "bass focus", first - just play with it. You can always set it back to neutral, right? Close your eyes as you play with it, and listen for changes in the
position of the sound. It's 100% an imaging adjustment.
Then, play with delaying the left front speaker. Close your eyes again.
Try to center things up just about under your rear view mirror.
I'd never touch the front right speaker.
And I don't run rear speakers, so they are no issue to me. It's a very complex adjustment trying to phase-align those as well - it gets ugly.
Even with a car that has rear speakers, I'd probably not try to touch that setting - fade them away so they are "just inaudible"... let them help out only ambiently, if you can get away with it (if you are missing midbass - there are lots of things to improve on the front speakers, mostly with regard to the install and preparation of their locations!).
Pioneers also have time alignment... no "bass focus".
I've got a Pioneer in my Civic, and an Alpine in my Pathfinder.
I don't touch the time alignment on either.
Even though I hardly ever have passengers (except my wife, and she sure doesn't commute with me

), I've always been anal about having a symmetrical soundstage... having it sound good from both seats.
See, if you make any tweaks - time alignment, balance, EQ - to specifically make improvements in SQ for the driver's seating position, you will inherently make a degradation to SQ in those same ways for the passenger's seating position.
And I've always thought I'd be embarrassed if I was so known for being into car audio and SQ, and then when someone sat in my car - just maybe for a casual drive, nothing to do with audio - and heard how BAD it sounded on the passenger side (because it sounded so good on the driver's side - which they'd never know), they'd just figure "this guy's full of crap, he doesn't know what he's talking about... my car sounds better", etc.
Just my neurotic hang-ups.
If you don't care - you can make definite imaging improvements with time alignment!
Don't fear it - you can always set it back to where you started.
I'd just stick with the basics, like Jonathan suggests.
Is it an Alpine deck?
Play with "bass focus", first - just play with it. You can always set it back to neutral, right? Close your eyes as you play with it, and listen for changes in the [i]position[/i] of the sound. It's 100% an imaging adjustment.
Then, play with delaying the left front speaker. Close your eyes again.
Try to center things up just about under your rear view mirror.
I'd never touch the front right speaker.
And I don't run rear speakers, so they are no issue to me. It's a very complex adjustment trying to phase-align those as well - it gets ugly.
Even with a car that has rear speakers, I'd probably not try to touch that setting - fade them away so they are "just inaudible"... let them help out only ambiently, if you can get away with it (if you are missing midbass - there are lots of things to improve on the front speakers, mostly with regard to the install and preparation of their locations!).
Pioneers also have time alignment... no "bass focus".
I've got a Pioneer in my Civic, and an Alpine in my Pathfinder.
I don't touch the time alignment on either.
Even though I hardly ever have passengers (except my wife, and she sure doesn't commute with me :D ), I've always been anal about having a symmetrical soundstage... having it sound good from both seats.
See, if you make any tweaks - time alignment, balance, EQ - to specifically make improvements in SQ for the driver's seating position, you will inherently make a degradation to SQ in those same ways for the passenger's seating position.
And I've always thought I'd be embarrassed if I was so known for being into car audio and SQ, and then when someone sat in my car - just maybe for a casual drive, nothing to do with audio - and heard how BAD it sounded on the passenger side (because it sounded so good on the driver's side - which they'd never know), they'd just figure "this guy's full of crap, he doesn't know what he's talking about... my car sounds better", etc.
Just my neurotic hang-ups.
If you don't care - you can make definite imaging improvements with time alignment!
Don't fear it - you can always set it back to where you started.