2 dual 4ohms or 2 dual 2 ohms?

[Nico Koutouzis 10+ year member]

I am getting an mb quart onyx 1200.1 D amp and thats what it is rated at 1 ohm. Now my question is since i dont want to upgrade my electrical system other than the big3 and MAYBE a battery I was hoping to have a bangin system on a 110 amp alt. Anyways I will be running 480w rms for speakers adding 1000 for 2 4 ohm subs I guarantee I will get a good amount of dimming. So I was thinking buying the 2 ohms and run them at the rated 750w rms at 2 ohms. Total rms being around 1250 which is wayyy more logical than 1500. What do ya guys think?

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[Nico Koutouzis 10+ year member]

anyone know if there is also a sq/sp difference between 2 ohms and 4 ohms?

 

[Why So Cereal? 5,000+ posts]

there was just a thread about the sq differences, if there are any, your ears probably wont be able to tell. also pulling 750 at 2 ohms is a good bit easier on your electrical than 1200 at 1 ohm. i'd just say make sure u have sensitive subs or good enough cone area in order to still get good output. and in the end the box will be a MAJOR factor in your sound.

 

[audioholic 5,000+ posts]

anyone know if there is also a sq/sp difference between 2 ohms and 4 ohms?

Your question is too generic to give a yes or no answer. Running any specific amplifier at a higher ohm load will reduce the THD. But there is no inherent reason why a lower ohm load on one amp will have higher THD than a higher impedance on another amp. In other words, running amplifier A at 2ohms is not inherently dirtier than running amplifier B at 4ohms. That is a common misconception brought about by misunderstanding the reasoning in the first sentence of my reply.

 

[audioholic 5,000+ posts]

dbl poast

 

[Nico Koutouzis 10+ year member]

no its the same amp. and they are type r 10's (2) in a sealed box proabably around 1-1.2 cubes. Should I get the 4 ohm version and wire it to 4 ohms for 475 rms or 2 ohms and wire it to 750 rms. I ask this because i dont think my car's stock electrical system can take the 4 ohms running at 1 ohm for 1000 rms. Dont forget i have about 500 rms running to speakers. BTW the amp is the mb quart onyx 1000.1 d and its not changing so base opinions off of that. thanks again guys

 

[THATpurpleKUSH 5,000+ posts]

Get the d4s, do a big 3 upgrade and add a cheap marine deep cycle battery and you should be fine

 

[audioholic 5,000+ posts]

Get the coil config that maximizes your amp's output (1ohm). You can always gain down the amp's output, but still have the ability to dial it back up if you upgrade your charging system down the road.

 

[Nico Koutouzis 10+ year member]

okay perfect so i should get the 4 ohms and wire them to 1 and if I do get some sort of dimming (most likely) i can just turn my gains down? btw guys I am doing the big 3 just dont have the budget for a 200 or so battery

 

[audioholic 5,000+ posts]

okay perfect so i should get the 4 ohms and wire them to 1 and if I do get some sort of dimming (most likely) i can just turn my gains down?

Yes, you can.