Alright as some of you know i have 2 12' atlas's. and im still not sure on what amp i sould get. ive been looking at the hifonics bx1500d and the profile california Ap2000. Im going to have a professional install my system becuase i have no experence with it and i really dont want to mess something up.

The hifonics is a mono amp that brings in 500 watts at 4 ohms. so id need to wire the subs so id get a 3 ohm load to get my desired 300+watts per sub right? and its around $220

The profile is a 2 channel that is 320 watt RMS at 4 ohms. and its around $175.

Now my question is, what would be better to have the subs run at 3 ohms and wired in a series(with the hifonics)? or would it be better to have each sub hooked up to seperate channels on the amp that would be running at 4 ohms(with the profile)

i also think that im going to have them build a box for me because i have no idea of how to go about doing it or where to get the materials or build it. im gonna have them build me a single dual 12'' ported thats got 2.0 - 2.5 ft of airspace tuned to 30 hz. with enclosers both the subs hook up to one port outside of the box right? so if i went with the profile how would they hook up the subs to the 2 different channels if they only have one set of wires comming out of the box?

again im a total newbe to this and dont know hardly anything about it. any help is greatly appreacited.

The Atlas is either a 4ohm driver, 6ohm driver, or 3ohm driver...thing is dont worry about the 6ohm or 3 ohm...consider it a 4ohm SVC driver. you will want to wire tme either in parallel to yeild a 2ohm load or series to yeild an 8ohm load. or each with its onw amp to yeild 2 4ohm loads.
IMO wire them in parallel with the BX1500 to yeild around 700w or 350 to each driver RMS. and leave the 2nd 2ohm coil alone.

__________________
'00 Mazda B3000: BX1205D, RE Comps, Waiting for Avalanche 18, 1/0 Big 3

I Got A Nomination For Funnies Post of the Year In the Street Racing Forum

This is how you do it...... Wire the 2 ohm coils in series with each other. Wire the 4 ohm coils in parallel. Then wire those in parallel for a 3 ohms load. The reason you HAVE to wire it like this is so that the smaller 2 layer coil (the 2 ohm one) gets half the power of the larger 4 layer coil (4 ohm one). MAKE SURE OU INSTALLER KNOWS EXACTLY HOW TO DO THIS!!!!!!!!!! Or he will blow the sub There aren't other subs that are wired like the atlas. Make sure to that your installer does a good job like building a proper enclosure (2.5 cubes net a piece to desired tuning) and sets the gains properly. Look for an amp that does 800wrms at 3 ohms. I would get something rated for 1000 or greater at 2 ohms and does not loose a lot of power when running at 4 ohms. (ex. 1000 watts at 2 ohms, 750 watts at 4 ohms.)

Or you could get a 2 channel that does 600 at 2 ohms per side and 300 and 4 ohms per side.

[QUOTE=bumpinstang77]This is how you do it...... Wire the 2 ohm coils in series with each other. Wire the 4 ohm coils in parallel. Then wire those in parallel for a 3 ohms load. The reason you HAVE to wire it like this is so that the smaller 2 layer coil (the 2 ohm one) gets half the power of the larger 4 layer coil (4 ohm one).QUOTE]


ive have been told countless time but countless people not to touch the gold terminals witch is the 2 ohm terminals right?

should i tell them to wire it how he is telling me to do it or leave the gold terminals alone and wire it how everyone else is telling me to witch as the post above the one im quoteing says in parellel.

im getting the system wired by tweeter.

so many different opinions on what to do....
its all so confuseing

The reason most people don't wire the gold coils is because they're either running one sub or they use a variable qtc. If you do it the way I pointed out to you will have no problem.

Please learn how to spell WHICH



nG

or you could wire the 4 and the 2 in parallel, however you wont end up with a 450w driver but stay a 300w driver, 150w to each coil. Same when making it a 6ohm driver in series, it will remain 300w total to the driver.
However, the atlas was designed to be a 4ohm SVC driver with varible qtc with the option for 3 and 6ohm operation if you have an amp with funk load ratings like JL's which areo nly stable to 1.5, 2 could be wiredto 3ohm then in parallel yeilding a 1.5ohm load, not that it matters because 2 could also be wired in paralel as SVC 4ohm to yeild a 2ohm load and you would get the exact same amount of power (*with a JL or other regulated amps, JL's are regulated from 1.5-4ohm so lowering impeadence from 2 ohm to 1.5ohm will do nothing as far as output is concerned, however you DONT want to go above 4ohm as you will loose power)

Like i said previously, wire the 2 4ohm coils in parallel yo yeild a 2ohm load UNLESS you end up with an UNGREGULATED amp that is only stable to 1.5ohm or w/e.

__________________
'00 Mazda B3000: BX1205D, RE Comps, Waiting for Avalanche 18, 1/0 Big 3

I Got A Nomination For Funnies Post of the Year In the Street Racing Forum

Fryman....there's something you don't understand. An amp doesn't see an overall load and the same power be distributed to all entities in that load. If you wire a 4 ohm coil and a 2 ohm coil in parallel you end up with 3 ohms and the amp puts out w/e it does at three ohms, BUT the poewr isn't the same between the two ohm and 4 ohm coil. The 2 ohm coil will get double the power as the 4 ohms coil, since there is only half the resistance to the flow of electricity. That is why, unless in low power situations, you can't use both coils when only running one driver. Now if you do like I said and wire the 2 ohms in series and the 4 ohms in parallel THEN parallel both loads OR run a 2 channel amp the power will be distributed correctly and the 2 ohm coils will get half the power of the 4 ohms coils, therefore properly poewring and driving the subwoofer.

YUP! It's physics...WOW Mike thought of PHYSICS!!!!!

noob...

NG

stfu NATE!!! LMAO

I thought you guys didn't believe in the those laws of physics

[QUOTE=bumpinstang77]Wire the 2 ohm coils in series with each other. Wire the 4 ohm coils in parallel. Then wire those in parallel for a 3 ohms load. QUOTE]


ok just so i understand u completely and make sure that tweeter wires it up correctly. ok so what ur saing is that i wire the positive gold terminal on sub1 to the negitive gold terminal on sub2. and the negitive gold on sub1 to the positive on sub2. then from the positive on the amp i wire it to both positive silver terminals on both subs. and the negitive from the amp to the negitive silver on both subs.

i think im missing something here. can u please break it down for me like i just did so i make sure there wireing it up correctly and they understand what i mean?

Quote:

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Originally Posted by bumpinstang77
Fryman....there's something you don't understand. An amp doesn't see an overall load and the same power be distributed to all entities in that load. If you wire a 4 ohm coil and a 2 ohm coil in parallel you end up with 3 ohms and the amp puts out w/e it does at three ohms, BUT the poewr isn't the same between the two ohm and 4 ohm coil. The 2 ohm coil will get double the power as the 4 ohms coil, since there is only half the resistance to the flow of electricity. That is why, unless in low power situations, you can't use both coils when only running one driver. Now if you do like I said and wire the 2 ohms in series and the 4 ohms in parallel THEN parallel both loads OR run a 2 channel amp the power will be distributed correctly and the 2 ohm coils will get half the power of the 4 ohms coils, therefore properly poewring and driving the subwoofer.

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__________________
'00 Mazda B3000: BX1205D, RE Comps, Waiting for Avalanche 18, 1/0 Big 3

I Got A Nomination For Funnies Post of the Year In the Street Racing Forum

im going to go with wireing up just the 4 ohm coils.

so now my question is what amp should i get that will give each sub 300-400 watts? because if i go with the hifonics bx1500d it will give each of them 500 and i think thats to much. i want this system to last me awhile and dont want to damage anything by giveing it to much power for a long period of time. or do you think if i have my system professionaly installed (im going to do that anyway) will the subs be ok at 500 a piece and still last me a few years?
I have around $200 for the amp

thanks for all the input.