Powering a 1 ohm amp?

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justincresci

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I am planning on purchasing the SAZ-1500d from Sundown Audio.

1500RMS @ 1ohm

The subwoofers I am going to buy are the Fi Audio 12" SSD's.

Do I need to buy my subs with Dual 1 ohm are can I run the amp at 1 ohm on Dual 2ohm?
 
Great choice of audio brands! Did you know that Sundown underrates their amps? You can get a LOT more power out of them then they say. But unless youre into competitions, dont worry about it.

You should get the dual 1 ohm subs. Wire the coils on each sub in parallel, then wire the 2 subs in series, bringing you to 1ohm.

BUT if you get the dual 2 ohms, you can wire it parallel-parallel and run it at .5 ohms and REALLY awaken the potential of the amp...but its up to you how much power you want. If you do this option, turn the amp down a little though...but it will be better. Good luck!
 
If you're going to get two subs, you need them to be 1 ohm DVC with them wired like this - http://i81.photobucket.com/albums/j230/sparky3489/PARALLEL-SERIES.jpg

The subs need to be 750 watts RMS each at least.

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Side note:

If your total system power is 1200 watts RMS or more, you will need to:

1. Upgrade the "Big 3" - that is to replace (or add to) the power wire between the battery and alternator, the ground from the battery to the chassis and the ground strap from the engine/tranny to the chassis.

2. Upgrade to a yellow top battery

3. Upgrade the alternator to a high output alternator


Failure to do this will result in the early death of the alternator as it will eventually fail.

Here is a guide that will calculate what size alternator and power wires you need http://www.box.net/shared/uchv4dbk88

You will need Microsoft Excel. If you don't have Excel, use this link http://www.box.net/shared/nkkw1dhk4g

A second battery is never a good idea as it's an added strain on the alternator to charge two batteries AND supply power for the car. The ONLY time a second battery is useful is if the audio system is to be used with the car off.

A capacitor is only good so far as the audio system isn't trying to pull too much from the electrical system. A cap doesn't provide more power, it's designed to 'stiffen' the voltage to the amp, nothing else. If the current isn't there, a cap won't help.

The alternator must have at least 20% more amperage power than the entire vehicle and sound system combined for a cap to be of benefit which is ironically the same requirements for an amp to be efficient.

See my site for more info http://spkrbox1.spaces.live.com
 
Some very in depth answers.

Basically a 1 ohm amp (with proper cables) will push 4 15's.
A question is are you aiming toward clarity or window smashing spl?

Either way you will have decent results for the street.

Most mono block amps are capable of pushing the 2 12's you mentioned.
 
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