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Old 12-06-2011, 04:33 AM
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Default do dual inputs help with voltage drop?

what experience have you guys had with using aluminum dual input blocks and voltage drop? this is for a 1800 rms amp.
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Old 12-06-2011, 04:42 AM
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Yes, I think it's the 2 runs of 0 gauge that help, I have 2 neg and 2 pos coming from the front and I saw a difference...
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Old 12-06-2011, 04:44 AM
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in running an extra run of 0 gauge?
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Old 12-06-2011, 05:06 AM
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yes, I even ran neg all the way to the batt., and still grounded to the chasis in the trunk...
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Old 12-06-2011, 05:26 AM
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Simply answer? Yep..
Here's a voltage drop calculator ---http://www.thecarpcstore.com/cms/index.php?option=com_content&view=article&id=47&It emid=63

When you have more than 1 run, simply half the wire distance everytime you double the amount of wire.. eg...1 run copper -15 ft... if you have 2- 15ft runs put in 7.5 ft.. 4 runs would be 3.75 etcetc.
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Old 12-06-2011, 06:09 AM
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I have not seen anyone use dual inputs on an 1800 watt amp. It doesn't pull enough current to require it. And its not helping voltage drop as much as allowing more surface area for the current to travel thru.
If your getting anything over .5v drop you need to look at other things then adding dual inputs.
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I think it's probably because that sub is not moving enough to allow it to cool.. Id turn the gain up a bit so it moves more for cooling reasons.. That's why it's hard on subs to be underpowered..
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Old 12-06-2011, 06:27 AM
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well i was trying to plan ahead because i was planning on eventually getting another amp and strapping them
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Old 12-06-2011, 06:34 AM
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Even then your only around 300A divided between them. If your using 1/0 you should have no problems passing that current.
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I think it's probably because that sub is not moving enough to allow it to cool.. Id turn the gain up a bit so it moves more for cooling reasons.. That's why it's hard on subs to be underpowered..
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Old 12-06-2011, 06:42 AM
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Gotta disagree.. regardless of how many amps your gear needs, the more area the current can travel through, the less drop there will be. Did you try using the calculator? Electricity is science..it works well
It's not about being "able" to pass the current, its about losing the least amount of it. More current at the gear, more power to the speakers..
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Old 12-06-2011, 07:20 AM
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Quote:
Originally Posted by audioarsonal View Post
I have not seen anyone use dual inputs on an 1800 watt amp. It doesn't pull enough current to require it. And its not helping voltage drop as much as allowing more surface area for the current to travel thru.
If your getting anything over .5v drop you need to look at other things then adding dual inputs.
I have dual 1/0 on each of my AP1500's. Not saying you are wrong that it might be over kill, but isn't that what Car Audio is all about... Overkill!!!
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