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<blockquote data-quote="Dookie" data-source="post: 325918" data-attributes="member: 550390">I&#039;m not sure if this should be posted in another forum or not, so please bare with me.I have a 2003 Nissan Murano w/Bose and I am replacing everything but the Head Unit. (Can&#039;t replace because the radio&#039;s controls share the same circuit board as the HVAC controls.) Anyway, I am using a prototype plug-n-play high to low level convertor that will give me 4-channel RCA outputs. Speakers being run are 6 1/2&quot; component set for the front and 2-way co-axial for the rear, along with two 12&#039;s.As far as powering the mids/highs, I seems to be in a dilemma. I want to get Kicker KX series amps, but the question is which one?I am deciding between:KX300.2 which could power 150 x 2 @ 2 ohms, .2% THD. (No Fading) $162KX600.4 which is 75 x 4 @ 4 ohms, .085% THD. (No fading, but can use the front and rear gain controls to lower the sound from the rear fill + fan cooled) $220First question is: Will the higher THD in the 300.2 be noticeable?Second question is: Will I really need to lower the rear fill if I use the 300.2?I&#039;m kinda budget shopping and was wondering if it was better to get the 300.2 as opposed to the 600.4. I figure that since I&#039;m using an OEM Clarion HU, then there is no need buying all of this great audiphile stuff if the source isn&#039;t clean, right?</blockquote>

[QUOTE="Dookie, post: 325918, member: 550390"] I'm not sure if this should be posted in another forum or not, so please bare with me. I have a 2003 Nissan Murano w/Bose and I am replacing everything but the Head Unit. (Can't replace because the radio's controls share the same circuit board as the HVAC controls.) Anyway, I am using a prototype plug-n-play high to low level convertor that will give me 4-channel RCA outputs. Speakers being run are 6 1/2" component set for the front and 2-way co-axial for the rear, along with two 12's. As far as powering the mids/highs, I seems to be in a dilemma. I want to get Kicker KX series amps, but the question is which one? I am deciding between: KX300.2 which could power 150 x 2 @ 2 ohms, .2% THD. (No Fading) $162 KX600.4 which is 75 x 4 @ 4 ohms, .085% THD. (No fading, but can use the front and rear gain controls to lower the sound from the rear fill + fan cooled) $220 First question is: Will the higher THD in the 300.2 be noticeable? Second question is: Will I really need to lower the rear fill if I use the 300.2? I'm kinda budget shopping and was wondering if it was better to get the 300.2 as opposed to the 600.4. I figure that since I'm using an OEM Clarion HU, then there is no need buying all of this great audiphile stuff if the source isn't clean, right? [/QUOTE]

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