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> subs facing?, does it matter?
post Sep 6, 2005 - 1:06 PM
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lake1069

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i have 2 12" 700watt subs in my hatch, i've been messing with the levels to get it to sound just like i like them, but i'm wondering if it makes any differece which way the subs face, like toward the driver or opposite?
 
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post Sep 7, 2005 - 10:03 PM
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snadman



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subs are single coil 4 ohm drivers almost positive. Properly running these would be to run them in stereo, as bridging them makes no sense in this case as you are losing power.

Just for instance say these subs would be dual 4 ohm drivers. the proper way to run them would be to "bridge" each sub's voice coils to the other, which in turn makes them a quazi-2 ohm driver (1/Rt = 1/Ra + 1/Rb --> 1/4 + 1/4 = 1/2 --> total resistance 2 ohms) then you would run these in stereo or in series bridged to the amp, either way giving them 230W RMS a piece. When you run drivers in parallel the resistances add in the manner I showed above, 2 drivers of 4 ohm run in parallel makes the amp see a 2 ohm load. 3 drivers of 4 ohm in parallel lets the amp see 1.33 ohm load and so on. Running drivers in series you simply add the resistances of the drivers. I honestly, think Abraxis and I should make up some tutorials or information pages on wiring up subs so people can just look there first and post here if they have more extensive questions.

This post has been edited by snadman: Sep 7, 2005 - 10:06 PM


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Posts in this topic
- lake1069   subs facing?   Sep 6, 2005 - 1:06 PM
- - Cutrara   You should have them facing the back glass, so it ...   Sep 6, 2005 - 2:06 PM
- - Abraxis64   people say that it will be louder if you face it t...   Sep 6, 2005 - 7:45 PM
- - lake1069   well i'm running a 800 watt kenwood amp with t...   Sep 6, 2005 - 8:44 PM
- - Abraxis64   lake, i don't mean to sound like a jerk or an...   Sep 6, 2005 - 10:06 PM
- - lake1069   here it is, its a KAC-7201 amp with KFC-W3005 subs...   Sep 6, 2005 - 11:30 PM
|- - DmVinny   QUOTE(lake1069 @ Sep 6, 2005 - 9:30 PM)here i...   Sep 7, 2005 - 11:12 PM
- - Abraxis64   first off, cool that you're doing your part to...   Sep 7, 2005 - 2:35 AM
- - Silvan   It shouldn't really matter what side they are ...   Sep 7, 2005 - 4:13 AM
|- - Abraxis64   QUOTE(Silvan @ Sep 7, 2005 - 4:13 AM)It shoul...   Sep 7, 2005 - 12:51 PM
|- - Silvan   QUOTE(Abraxis64 @ Sep 7, 2005 - 5:51 PM)QUOTE...   Sep 8, 2005 - 5:30 AM
- - afroman   are your subs dual 4s or single 4s if they are dua...   Sep 7, 2005 - 10:57 AM
- - afroman   sorry double post   Sep 7, 2005 - 10:57 AM
- - snadman   subs are single coil 4 ohm drivers almost positive...   Sep 7, 2005 - 10:03 PM
- - lake1069   i recall the guys at discount performance sayin th...   Sep 7, 2005 - 10:36 PM
- - Abraxis64   silvan, very good points however, i believe i to...   Sep 8, 2005 - 4:39 PM
|- - Silvan   Thanks for explaining yourself and the discussion:...   Sep 9, 2005 - 2:03 AM
- - Digndoug   Ok, well i didnt want to post until i tested my su...   Sep 12, 2005 - 5:14 PM
- - droptopGT   nice   Sep 12, 2005 - 5:45 PM
- - Abraxis64   ...hope you have a plan to hide those, or else you...   Sep 12, 2005 - 5:53 PM
- - Digndoug   QUOTE(Abraxis64 @ Sep 12, 2005 - 5:53 PM)...h...   Sep 12, 2005 - 9:03 PM
- - Abraxis64   well, with the subs angled inwards as they are, ea...   Sep 13, 2005 - 2:21 AM
- - Digndoug   QUOTE(Abraxis64 @ Sep 13, 2005 - 2:21 AM)well...   Sep 13, 2005 - 9:56 PM


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