Hi,
You have a couple of options:
1. go shop and listen and get the 6x9 that sounds the best (Polk and Kicker comes to mind)
2. a good installer can make a wood plate to affix a round speaker (5.25, 6 or 6.5 inch and a tweeter). Depending on your rear deck and the size of the drivers and tweeter and how they are installed, they can either bottom mount or top mount the fabricated plate speaker. I have seen installers fabricate the plate using mdf. They paint it to match the interior if it is a top mount job. They make a cover and use fabric to also match your interior. Bottom mount looks cleaner, but sometimes the trunk lid mechanism and/or how the bottom of panel is shaped gets in the way.
Madisound sells auto speakers from Peerless etc. that will fit this need.
If you need more bass. You may then consider having a sub installed. But, this will require an amp, x-over, and gets more complicated.
It all depends on how far you want to go. The above posts are correct, nothing can match a good home stereo. However, if you spend lots of time in the car - being happy with your auto sound is a good thing.
You have a couple of options:
1. go shop and listen and get the 6x9 that sounds the best (Polk and Kicker comes to mind)
2. a good installer can make a wood plate to affix a round speaker (5.25, 6 or 6.5 inch and a tweeter). Depending on your rear deck and the size of the drivers and tweeter and how they are installed, they can either bottom mount or top mount the fabricated plate speaker. I have seen installers fabricate the plate using mdf. They paint it to match the interior if it is a top mount job. They make a cover and use fabric to also match your interior. Bottom mount looks cleaner, but sometimes the trunk lid mechanism and/or how the bottom of panel is shaped gets in the way.
Madisound sells auto speakers from Peerless etc. that will fit this need.
If you need more bass. You may then consider having a sub installed. But, this will require an amp, x-over, and gets more complicated.
It all depends on how far you want to go. The above posts are correct, nothing can match a good home stereo. However, if you spend lots of time in the car - being happy with your auto sound is a good thing.