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Thread: Very lost , alpine mrp-m850 |
    
Bronze Member Username: Kpa2727
Post Number: 52
Registered: May-07
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| Posted on Monday, May 14, 2007 - 11:06 pm: |
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I'm very lost i know alot but idk where the hell i'm going with my setup atm. right now i got the alpine mrp - m850 it's rated at 4ohms into 500 wx1 rms and 800wx1 at 2 ohms.
i have it going to 2 infinity 12's at 1252w at 300 rms the normal impedence on the spec sheet says 2 or 8 ohms i followed infinitys wiring chart for 4 oms at 2 woofers and wired it like this http://www.infinitysystems.com/car/support/SubwooferWiring/sub_wiring_diagram.as px?type=2-4-4
i tuned it up using the calculator on here for the gain i set it with a 50 hz test tone, i havent messed with one setting though. tthere is a bass eq setting? is this bass boost? or a actual setting? i set it up and it sounds really low nothing like it should so i'm wondering do i need a new ohm load? how do i set this up for the 2 infinity's ? |
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Gold Member Username: N2audio
Lawrence,
Ks
USA
Post Number: 1304
Registered: Mar-04
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| Posted on Monday, May 14, 2007 - 11:30 pm: |
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I'd leave the bass eq at 0, or near it, especially if you set the gain with the eq at 0.
where's your LP filter set? |
Bronze Member Username: Kpa2727
Post Number: 55
Registered: May-07
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| Posted on Monday, May 14, 2007 - 11:44 pm: |
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lp is around 50 - 60 hz it was tuned with a 50 hz test tone. as i said before though, thier dual voice coil wired like this. http://www.infinitysystems.com/car/support/SubwooferWiring/sub_wiring_diagram.as px?type=2-4-4
44.7 volts is what my amp rated on the calculator. i'm still confused as my subs spec sheet says normal impedence at 2 or 8 ohms |
Bronze Member Username: Kpa2727
Post Number: 60
Registered: May-07
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| Posted on Tuesday, May 15, 2007 - 02:18 am: |
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anyone gotta fair idea how to do the correct wiring on this so its nice and stable? the way i was shown would work fine but thier not single coil thier dual. |
Gold Member Username: N2audio
Lawrence,
Ks
USA
Post Number: 1305
Registered: Mar-04
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| Posted on Tuesday, May 15, 2007 - 03:44 am: |
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individually a dvc 4 sub IS 2 (coils parallel) or 8 (coils in series).
the mfg can only tell you the specs of ONE sub.
TOGETHER - TWO dvc 4's can be wired for 1, 4 or 16 ohms
Turn your LP filter up to ~75hz |
Bronze Member Username: Kpa2727
Post Number: 61
Registered: May-07
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| Posted on Tuesday, May 15, 2007 - 03:55 am: |
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i searched for a bit and came across crutchfields listing of my woofer. it states it as a 4 ohm woofer. http://www.crutchfield.com/S-GhiZI4oWmBO/cgi-bin/prodview.asp?i=1081252W
whats my best bet for this setup leave them as this http://www.infinitysystems.com/car/support/SubwooferWiring/sub_wiring_diagram.as px?type=2-4-4 |
Bronze Member Username: Kpa2727
Post Number: 62
Registered: May-07
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| Posted on Tuesday, May 15, 2007 - 04:09 am: |
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heres a really weird one, my woofer on best buy.com. where i got them, the same watts, are rated everything the same. except the peak power is rated at 1000 not 1200 like mine and it's listed at 8 ohm. http://www.bestbuy.com/site/olspage.jsp?skuId=7730155&type=product&productCatego ryId=cat03081&id=1140392384210
does this make any sense????? |
Gold Member Username: N2audio
Lawrence,
Ks
USA
Post Number: 1306
Registered: Mar-04
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| Posted on Tuesday, May 15, 2007 - 09:16 am: |
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the crutchfield and best buy links both indicate it is a dvc 4. Crutchfield states it clearly - best buy requires a tiny bit of intuition.
the way you have it wired (4 ohms total) is the way to go with the m850. |
