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Will 4 awg be ok??

Old 03-16-2009, 08:25 AM
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Will 4 awg be ok??

Hey guys


I Just bought myself an Alpine 1000.1 PDX amp to add to my Alpine mrd 1000.1 amp


I will be running either 2 Alpine type X 10" or 2 type X 12" (Not quit sure yet)

Stock alt

Big 3 done

i Just wanted to know if 4 awg will be ok???

Also wanted to know how to disconnect the feed from my cap to the amp without being shocked...

Thanks
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Old 03-16-2009, 08:41 AM
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the amprage rating on most 4 guage power cable is 150 amps of current. i'm not sure waht the fuse ratings on the mrd 1000 is but i do know you need around 70-80 amps of current to make the 1000watts. which with 2 - 1000 watt amps that would put you just at the limit. so i personally would run 2 guage wire just to be safe.
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Old 03-17-2009, 02:53 AM
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Those Alpine Type X woofers are 1000wrms each and forgive me if im wrong but your planning on running those two woofers with 2 different amplifiers?

A PDX1.1000 and a MRDM1001?

Both of those amps have different damping factors and efficiencies and even if your able to gain match those close enough they (subs) will end up being out of phase in a short time.

Get yourself a 2nd PDX1.1000 and stack em or wait for the MRPM2000 to be released. (The 2 PDX1.1000 will be superior though)

As far as wire gauge I would run 4awg to each amplifier or else one run of 1/0 to a distro block and 4awg from there.
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Old 03-17-2009, 06:04 AM
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Originally Posted by Lethal View Post

Both of those amps have different damping factors and efficiencies and even if your able to gain match those close enough they (subs) will end up being out of phase in a short time.
Can you be a little more specifec...what do you mean?? Still a newbie here
Both can play 1000rms @ 2 ohm each
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Old 03-18-2009, 01:24 PM
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Nobody?
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Old 03-18-2009, 02:25 PM
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Let's try something, if you know cars you should understand.

If you take 2 identical cars but one with a 2.5L L4 motor and one with a 5.0L V12 motor and let's say they have both the same horsepower. Do you think both will drive the same, same top speed, same acceleration...? No there's still lots of difference between those 2 motors, the HP is only one of many variables.

The same apply to amplifier, the watts rating is one variable but like Lethal mention they are others like damping, efficiencies, crossover slope... This is why you shouldn't use 2 different amp because they will not reproduce sound identically.

As for your question regarding the 4AWG, it will not be enough for 2 1000w RMS amps and not even for one if you use CCA, the lengh of the cable is also an important factor.
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Old 03-18-2009, 02:27 PM
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Originally Posted by Canadianbuddy View Post
Can you be a little more specifec...what do you mean?? Still a newbie here
Both can play 1000rms @ 2 ohm each
the only way you should run 2 different amps is if the subs are in 2 different boxes or your box is not a common chamber box. all amps are a little different even the same brand and model let alone 2 different models. they will end up working against each other if both subs are in the same box sharing a common enclosure.
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Old 03-18-2009, 03:21 PM
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Originally Posted by lpchouinard View Post
As for your question regarding the 4AWG, it will not be enough for 2 1000w RMS amps and not even for one if you use CCA, the lengh of the cable is also an important factor.
Another clarification for the newbie - CCA = Canadian Car Audio Just kidding.
CCA = Copper Clad Aluminum.
You don't want that stuff - you want pure copper.
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Old 03-18-2009, 03:26 PM
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Originally Posted by godzilla1978 View Post
the only way you should run 2 different amps is if the subs are in 2 different boxes or your box is not a common chamber box. all amps are a little different even the same brand and model let alone 2 different models. they will end up working against each other if both subs are in the same box sharing a common enclosure.
Can you even say that separating them into individual chambers okay?
Since the amps will "accelerate" at different rates, would that not really screw with the sound (and as was mentioned earlier, potentially even phase)? When they are performing in the same acoustic environment, even though they are in their own boxes, they still are sharing the same vehicle cabin.
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Old 03-18-2009, 03:53 PM
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cold cranking amps, canadian car audio and now copper clad aluminum? jeez we need to work on some new initials
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