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<blockquote data-quote="Alrojoca" data-source="post: 7828671" data-attributes="member: 638714">If you do not want to add an amp, you could get coaxials rated at 93 db spl, maybe hook up&nbsp; a set of tweeters in parallel of the same brand and bring the impedance from 4 to just over 2 to get the most power out of the HU.If you get components add an amp.&nbsp; The only component speaker you could just add to a factory HU that will give you good bass and clear sound would be the Hertz Dieci, lower priced Hertz components.&nbsp; Any other more expensive component set with 93 db spl or below will need more power, usually 70 watts plus per channel.&nbsp; I can&#039;t speak for any other brand driven with low power.&nbsp;&nbsp; You may want to consider a sub box for the rear fill.&nbsp;&nbsp; If you get a good 4 channel amp, you could drive your components with with it, bridge the rear channels and drive a 4 ohm sub box, while you drive your rears with the Head Unit or keep the factory speakers if you get a sub.&nbsp;&nbsp; It is choice between rear speakers and more fill or add a sub.&nbsp;&nbsp; If you want a lot of quality bass from the doors,&nbsp; You will need to sound deaden the doors and that can cost time and extra money.Most good small amps will give you, 50 x 4, but will give you 70 x4 at 2 ohms. To get the most from the amp you may want to select 2 ohm speakers or components.</blockquote>

[QUOTE="Alrojoca, post: 7828671, member: 638714"] If you do not want to add an amp, you could get coaxials rated at 93 db spl, maybe hook up a set of tweeters in parallel of the same brand and bring the impedance from 4 to just over 2 to get the most power out of the HU. If you get components add an amp. The only component speaker you could just add to a factory HU that will give you good bass and clear sound would be the Hertz Dieci, lower priced Hertz components. Any other more expensive component set with 93 db spl or below will need more power, usually 70 watts plus per channel. I can't speak for any other brand driven with low power. You may want to consider a sub box for the rear fill. If you get a good 4 channel amp, you could drive your components with with it, bridge the rear channels and drive a 4 ohm sub box, while you drive your rears with the Head Unit or keep the factory speakers if you get a sub. It is choice between rear speakers and more fill or add a sub. If you want a lot of quality bass from the doors, You will need to sound deaden the doors and that can cost time and extra money. Most good small amps will give you, 50 x 4, but will give you 70 x4 at 2 ohms. To get the most from the amp you may want to select 2 ohm speakers or components. [/QUOTE]

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