question on ohms for amp

[King Kong 10+ year member]

I have two 12" mtx thunder 4512 subs and it says the impedence that it lists is dual 2 ohms. this would make them 4 ohms total. Im going to get a kicker zx750.1 and was wondering what I would have it wired at, 4 or 2 ohms? at 4 ohms the kicker amp has a 375 watt output x 1 channel. and at 2 ohms it ouputs 750 x 1 channel. Im not understanding all this. The subs can only handle 450 rms combined, so can someone explain to me which impedence it should be wired under and if 4 ohms gives off less power than why would anybody want to use that, is it just more stable? sorry for the long post im just confused on this...

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[ChuteBoxe515 10+ year member]

you have a lot more wiring choices than that...keep them at a 2 ohm final load and you will be fine with your power supply

http://www.caraudio.com/forum/showthread.php?t=31984

figure out which suits you best and do it...but like I said, 2 ohm final is prolly your best bet

EDIT: forgot the original pics are down...go to the last page of the thread and check out the link I gave there

 

[Scoobydoo 5,000+ posts]

series the subs at 4ohm and then parallel them to the amp for a 2ohm load

each sub will get 375 watts, which is manageable if you set your gains correctly

unless MTX really ****, i dont know anything about them

 

[King Kong 10+ year member]

i was looking at a different model than mine, these are the specs:

RMS power handling (watts) - 450

Frequency response (kHz) - 44Hz - 150Hz

Peak power handling (watts) - 1350

Impedance per voice coil (ohms)- 2

does this mean it has 2 ohms? or are there 2 voice coils making it 4 ohms?

sorry if these are stupid questions, ive tried reading the stickies but they **** my brain up even more, probably doesnt help that im half asleep and in a soma coma

 

[ChuteBoxe515 10+ year member]

what model number is it?

 

[King Kong 10+ year member]

Tce4512x2d

edit: i looked into it more and it says it has a single 2 ohm connection. so basically with the kicker zx750.1 id be getting 750 rms which will be plenty if the subs can only handle 450

 

[ChuteBoxe515 10+ year member]

well, 2 single two can go to 4 final or 1 final...keep that in mind

 

[King Kong 10+ year member]

well if the sub setup is a single 2 ohm connection then wouldnt it just be a 2 ohm connection, why 4 or 1, and what setup would give me optimum power, cuz at 2 ohms theyd be getting peak amount of input rms easily

 

[n2audio 5,000+ posts]

Tce4512x2d
edit: i looked into it more and it says it has a single 2 ohm connection. so basically with the kicker zx750.1 id be getting 750 rms which will be plenty if the subs can only handle 450

I don't think it's any more complicated than that.

The 750.1 should be fine. If you're worried about too much power either set the gain conservatively or use some common sense with the volume knob - never a bad idea to do both.

 

[King Kong 10+ year member]

thats what I plan on doing, is there a way to set a maximum output on the amp to where no matter how much i crank the volume it will still never go beyond the maximum point that is set. is this possible. cuz if it is I dont understand how anyone can blow their subs

 

[n2audio 5,000+ posts]

is there a way to set a maximum output on the amp to where no matter how much i crank the volume it will still never go beyond the maximum point that is set. is this possible. cuz if it is I dont understand how anyone can blow their subs

yes - follow the gain setting tutorial in the stickeys.

just plug in the power you don't want the amp to exceed.