im intrested in buyin a centre speaker for my system wondering if there only used for movies ONLY or is there any benifits of using them with music only

basically, a 5.1 processor is only useful for movies. unless you have a music DVD recorded in dolby digital.

however, the actual processor may have other useful features for music. for example, alpine's dolby digital processors have EQs and time alignment.

it's also possible to get beneficial results for music using dolby prologic II (not just prologic (I) coz i've found that pretty poor). this processing converts regular stereo recordings into good 5.1-channel sound. in this situation, a centre channel can improve your soundstage by reinforcing the centre image. T-bro has used this to high success, albeit with a high quality centre channel (speaker and installation) and EQing...not to mention a lot of time for tuning.

but unless your car can handle a quality centre channel installation (ie: the same principles as you'd use to install your door speakers), then the results may not be very good.

ahoy yes i use a centre channel via dolby prologic II, and the results are very good - but like shiny said this is based on using a high quality centre speaker (see sig), that is mounted and located well, and is EQ'ed independently of other speakers to ensure it blends in. not an easy task, and one that in some cars is very hard.

i recently got to listen to a car that used one of those small manufacturer brand centre speakers (that comes with its own amp and is small enough to fit under the headunit) and while it was ok for movies, with music or anything centre-stage biased, it sounded thin and hollow, like a laptop speaker pretty much. this is just a result of the small speakers that are used and their inability to go low.

so if you want to enjoy music for any length of time, your going to need to go custom for the centre speaker - just my experience