Problem.

i have a amp that has 4 channels and im hooking it up to 2 6x9s and 2 door speakers. the problem is that i want to hook a sub up to my system but that would make 5 speakers on a 4 channel amp. do i need to buy a sub amp and do what ?

BTW, i need a sub that responds well when i listen to rock and metal stuff.

What is the amp? It is a possiblity you could use it one everything.

its a profile HA1040 1000watt X 4channel.

wire the speakrs on the left to a left channel at 2 ohms (both front and rear) and both right speakers to the right channel. connect the + and + - and -. bridge the other 2 channels for a subwoofer @ 4 ohms. I wouls suggest an atlas 15 from www.ascendantaudio.com

i made a picture of what i think your telling me to do. tell me if its right.

http://www.pbase.com/image/41610539/original

Close..... u bridge 1 or 2 3 or 4 though not 2 and 3. http://img211.exs.cx/my.php?loc=img211&image=baja0dk.png

P.S. Paint PWNZ!!!

haha yeah paint is awesome. if i run a wire to the 2 right speakers and 2 left speakers, will i lose power to the speakers because im powering 2 speakers with one channel.

No, because your cutting the impedance in half (2ohms), so you will double the ouput of the amp.

ah cool. so all i gotta do it split the wire comming from the channel and connect it to the speaker? (with the correct + and - of course)

just plug both +'s in the + of the amp and both -'s in the - of the amp.

so when i bridge the sub, i'll have a leftover - on the 3rd channel and a + on the 4th channel. could i use those left over - and + for like another sub possibly?

No..... those two cannot be used because your bridging the two channels..... meaning one channel is the + and the other one the - so the other two are not used.

ohh. ok

so its like combining those 2 channels and my bridged sub will have 2X the power of the other nonbridged speakers?

yeah that sounds right..

but that might be the problem... (dont worry not a big problem).. the atlas 15 is an awesome sub but its pretty much a single coil 4 ohm sub. (essentiaslly)

so you might not be able to get that sub..

but there are plenty of great subs out there

got any other subs thatd work for me?

http://www.maaudio.com/productcatalog.cfm?class=47492

those are nice.

Yeah but these seem a little nicer http://directed.com/audio/subs/default.asp

Trust me when I say go with an atlas. You need efficiency and that's what an atlas can offer.

link me to an atlas sub. i dont think i need a 15" sub though.

www.ascendantaudio.com Why not just get the 15"? almost double the ouput for a few extra dollars.

yeah nevermind before i said the atlas wouldnt work but i didnt read.. i was thinking he needed somethin to work with that wattage @ 2 ohms..

go with the atlas 15

ok. but when you say double the output, do you mean that it can handle double the RMS watts or double as in louder than other subs with the same watts?

alright then. so i guess my set up will be 2 6x9s, 2 door speakers powered by a profile HA1040 amp with a atlas 15 in the truck. sound good?

i might need more door speakers though. cause the ones i have now are still stock. they might blow. anyone know how big the door speakers are?

I say double the output b/c a 15 has almost twice the cone area of a 12, so with the same power it will move twice as much air.

i listen to alot of rock and metal music. will this sound good? i sometimes listen to rap. will the sub hit hard?

what im trying to say is that will all kinds of music sound good with my setup? cause i dont want to listen to rock music then listen to some rap and the sub not hit hard or vise versa.

i was messin around with my these old 10" subs and i hooked them up to my cd player in my room and the subs played out all ranges of notes. i thought subs just play out the bass notes. or do i need a amp so it can do that?

i was messin around with my these old 10" subs and i hooked them up to my cd player in my room and the subs played out all ranges of notes. i thought subs just play out the bass notes. or do i need a amp so it can do that?

you needz a low pass crossover aka a coil of wire google it for specs

heres another picture of what i think i should do if i get another sub:

http://img.photobucket.com/albums/v57/rg501/untitled.bmp

is this right?

uh... I hope you know you're omitting ground wires in that sketch...

On a more serious note, you'll have to make sure your amp supports 2 ohm operation. All your speakers are going to be 2 ohms, and your subs are going to be 8 ohms... What may be a better idea is to get an amp that will do what they call a tri-mode operation. It's where you bridge a sub across a left and right channel and have the speakers connected normally. It requires having a highpass filter (a 100 volt capacitor - the ferad rating corresponds to different frequencies) on the wires going to the speakers and a lowpass filter (a 100v inductor - the henry rating corresponds to the frequency) going to the sub. If your amp supports that, then you'll be good to go.

my amp reads it is 125watts X4 (2ohms)

so i guess it supports 2 ohms. i should be all set then. if i just hook one sub briged to 2 channel will that sub be 4 ohms? im probably not even going to hook up another sub. i was just wondering.

and yes, i know im omitting ground wires. :)

yeh thats the hole point of bridging ;)

Would doing a tri-mode operation be better though? I think it would be a more balenced load on the amp... and you'd get to keep all the fader and balence functions.

how much are tri-mode amps? cause im not looking to have the best amp/speakers in town. i just want to be able to play my music louder without the clipping and distortion.

I was looking through the different amps the profile makes, and the AP1040 (I know your's is the HA1040) is tri-mode enabled. If you could exchange yours for one of those, they go for just about the same price. You will need to get the inductors and capacitors though, to keep the right set of frequencies from going to the right speaker.

meh. i dont think itd really be worth it. cause i just have the front/back and right/left on my HU set at equal. so i dont think i really need it.

It's your system, so do what you've decided is best for you. That's what it's all about, right? :)

You won't need another sub after you get the atlas..... if you get another atlas then your cone area will go up but the power would have to be cut in half....... port a single atlas 15 in 3-5 cubes net at 28-35 hz and you'll be happy.

ok. whats the diffrence between a good 15" and a awesome 10" sub?

the size :-) lol, um frequency, its all to do with the specs

cone area?

ok. whats the diffrence between a good 15" and a awesome 10" sub?
Nothing if both are installed or constructed incorrectly.

You should be able to get any decent 15" woofer to work OK but the needed increase area usually makes it a poor choice for mobile installs unless you are using multiple subs for SPL. That's why you don't see true SQ setups with 15's anymore.

Specs are always what you need to look at. Unfortunately, this makes things so difficult. You have brands like Audiobahn that inflate their ratings while some others seem to under estimate them. Now personally, I'll choose a nice 10" sub more over than most other sizes. 10" woofers tend to be much more useful in car audio. I like subs with 2 motor structures and that can handle being in very small, sealed enclosures. That way, it's easier to control cone movement. This, of course, are all generalizations. It depends on all kinds of things like the persons style of music, $$ factor, and the vehicle itself. Just like I state I hate bandpass enclosures but just last week built one for a C6!

keep it simple stupid ;-)

ponchonutty, what type of speaker would be good for somebody (me) who listens to mostly rock and metal?

ponchonutty, what type of speaker would be good for somebody (me) who listens to mostly rock and metal?

Umm...he'll say something Directed...cuz that's all he knows...

What is your budget!?!?!

NG

Umm...he'll say something Directed...cuz that's all he knows...

What is your budget!?!?!

NG
Oh cum on now. I am not some Adaire freak.

RG501, To answer the real question, anything that can work well in a sealed enclosure. Since you like rock/metal, sealed boxes generally work better because the that type of music is typically higher in bass frequencies compared to rap. Plus, rock/metal is made from actual instruments versus computer generated sine waves.

Now, this is more of my preference when someone asks the question you asked. You didn't state what vehicle or price range you want to be in. So, my answer will vary depending the answers you give.

i have a 97 pontiac firebird. i dont want to spend much. could i get something for less than 150$?