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Subwoofers
Would like advice on this set up
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<blockquote data-quote="Water Bear" data-source="post: 8601163" data-attributes="member: 673826"><p>Hello to the forum!</p><p></p><p>I would like to share my planned system and hear some feedback.</p><p></p><p>Currently I'm running 50x4 @ 4 ohm into Polk db 6.5 door speakers and 300x1 @ 4 ohm into a Polk MM 10 sub (~.65 cft sealed enclosure). Amps are Alpine's previous generation MRX series.</p><p></p><p>Problem: The sub is too weak. I have to put it around +6db gain on the EQ for it just to match the mids, which are almost certainly underpowered (front components are rated 100 RMS).</p><p></p><p>The sub amp is rated 500x1 @ 2 ohm. I am seriously contemplating upgrading to a Sundown SA 12 with dual 4 ohm coils so I can wire it down to 2 ohm and get 500 out of my amp. Looking at a ported box around 1.6 cubes, noting the recommended enclosure size is 1.5-2 cubic feet but I've read that closer to 2 cubes @ 35 hz tuned freq is best.</p><p></p><p>Questions:</p><p></p><p>1) Is the sub going to be underpowered? It's rated @ 750 RMS and all signs indicate it can take much more. I'm not too far off the ~560 watt "minimum" most places recommend, aka 75% of rated RMS.</p><p></p><p>2) Is that particular sub going to be too much? I'm not trying to rattle the doors off. A friend of mine has a Sundown X series 15 on like 1500+ watts and that **** was down right painful when cranked. I just want to bump good, but not at all trying to wake up the neighborhood.</p><p></p><p>Any advice appreciated.</p><p></p><p>Edit: Forgot to mention, before anyone comments: I believe the gains are set correctly. I set gain using a multimeter. Output voltage = square root of watts times resistance.</p></blockquote><p></p>
[QUOTE="Water Bear, post: 8601163, member: 673826"] Hello to the forum! I would like to share my planned system and hear some feedback. Currently I'm running 50x4 @ 4 ohm into Polk db 6.5 door speakers and 300x1 @ 4 ohm into a Polk MM 10 sub (~.65 cft sealed enclosure). Amps are Alpine's previous generation MRX series. Problem: The sub is too weak. I have to put it around +6db gain on the EQ for it just to match the mids, which are almost certainly underpowered (front components are rated 100 RMS). The sub amp is rated 500x1 @ 2 ohm. I am seriously contemplating upgrading to a Sundown SA 12 with dual 4 ohm coils so I can wire it down to 2 ohm and get 500 out of my amp. Looking at a ported box around 1.6 cubes, noting the recommended enclosure size is 1.5-2 cubic feet but I've read that closer to 2 cubes @ 35 hz tuned freq is best. Questions: 1) Is the sub going to be underpowered? It's rated @ 750 RMS and all signs indicate it can take much more. I'm not too far off the ~560 watt "minimum" most places recommend, aka 75% of rated RMS. 2) Is that particular sub going to be too much? I'm not trying to rattle the doors off. A friend of mine has a Sundown X series 15 on like 1500+ watts and that **** was down right painful when cranked. I just want to bump good, but not at all trying to wake up the neighborhood. Any advice appreciated. Edit: Forgot to mention, before anyone comments: I believe the gains are set correctly. I set gain using a multimeter. Output voltage = square root of watts times resistance. [/QUOTE]
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Would like advice on this set up
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