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<blockquote data-quote="kyheng" data-source="post: 1256392" data-attributes="member: 13624"><p>For your reliability issue, it will spoilt in long term, as most of the speakers, some parts is made from rubber. But normally will last you for few years. The best is try and get a place that have shade. Even your speakers can last, but maybe other parts on your car cannot last.</p><p>Forgot to add in: your 75W X2 is bridged output at 4ohm, they never print wrongly. The other thing is 38W X4 at 2ohm is the amp can connect to 4 speakers at 2ohm. </p><p>Normally a monoblock amp can support to 2ohm stable, if a monoblock is 300w at 4ohm, maybe at 2ohm it will be 600w. For your Myvi, os better to use 1 sub, atleast you still have place to put your things...</p><p>For your setup, is considered as passive. </p><p>For your connection, XO connection is RCA in then RCA out, sure is impossible to connect like this. Since you only have 1 hi-low, then you have to use the XO to do all the crossover job. You have to check the line up on your XO, very hard to say without picture. If not mistaken, from the rear input, it can go to front, rear and sub(have the selector on each of them). After you connect like this, then you will be very hard, when the front speakers too loud or rear too loud... Very troublesome to adjust the sound. But your sub's volume can be adjust as it have a remote knob(if provided). So the best solution is you have to buy another hi-low converter and another RCA cable, then connect it like this : front(HU) > front(XO) > front(amp, 4ch), rear(HU) > rear(XO) > rear(amp, 4ch)</p><p>> sub out(using the selector) > amp, 2ch > sub.</p><p>For this you can adjust your front, rear speakers volume using your HU's fader control.</p></blockquote><p></p>
[QUOTE="kyheng, post: 1256392, member: 13624"] For your reliability issue, it will spoilt in long term, as most of the speakers, some parts is made from rubber. But normally will last you for few years. The best is try and get a place that have shade. Even your speakers can last, but maybe other parts on your car cannot last. Forgot to add in: your 75W X2 is bridged output at 4ohm, they never print wrongly. The other thing is 38W X4 at 2ohm is the amp can connect to 4 speakers at 2ohm. Normally a monoblock amp can support to 2ohm stable, if a monoblock is 300w at 4ohm, maybe at 2ohm it will be 600w. For your Myvi, os better to use 1 sub, atleast you still have place to put your things... For your setup, is considered as passive. For your connection, XO connection is RCA in then RCA out, sure is impossible to connect like this. Since you only have 1 hi-low, then you have to use the XO to do all the crossover job. You have to check the line up on your XO, very hard to say without picture. If not mistaken, from the rear input, it can go to front, rear and sub(have the selector on each of them). After you connect like this, then you will be very hard, when the front speakers too loud or rear too loud... Very troublesome to adjust the sound. But your sub's volume can be adjust as it have a remote knob(if provided). So the best solution is you have to buy another hi-low converter and another RCA cable, then connect it like this : front(HU) > front(XO) > front(amp, 4ch), rear(HU) > rear(XO) > rear(amp, 4ch) > sub out(using the selector) > amp, 2ch > sub. For this you can adjust your front, rear speakers volume using your HU's fader control. [/QUOTE]
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