ive been told that if you time correct a system with no sub woofer you will lose your bass.is this true

Uh, no....

Perhaps you could provide a bit more detail on how you were led to this conclusion.

I once had a problem with my car overheating and the mechanic suggested I put fresh air in the tyres. Not unsurprisingly it made no difference. There is an answer in there somewhere.................

ROTFLMGDAO!

:hehe: nice

a while ago i installed a system and it had no sub i time corrected it and my mate who actually is an installer told me not to time correct it because it took bass from the rest of the system

What do you actually mean by "time correction". How did you time correct the system? Do you mean, for example, using the time alignment feature in the headunit? How much delay did you use?

(I think I may know where the misunderstanding is, but I may be wrong....)

The theory behind this is that as you adjust each midrange speaker from the reference speaker (which is set to zero delay of course) you will invariably get phase variances between all the other midrange speakers' output relative to the reference one. I've never tried time delaying a system with no subwoofer so I can't say for certain how dramatic the effects would be, but considering the increments we are talking about in a properly set up system (assuming the owner has been diligent with keeping equal pathlengths and what not) the phase variances will be small at most.

I dare say if you are toying with time alignment before adding a woofer it is akin to running before you walk...

Part of the misunderstanding could be, that some people call wiring one of the speakers out of phase with the other "time correction", when actually that is a bit different.

Secondly, in car audio installs, the subwoofer covers the sub-bass and the other speakers only cover down to the mid-bass (with a bit of crossover). So if you were to loose mid-bass, then having a subwoofer won't exactly help all that much.

i just rang him and asked him again and what he has old me is that you take the bass focus out of the front and rear staging when you time correct a system with no sub

and yes when i say time correcting im talking about the feature in the head unit