On my amp I have 4 auxillary inputs....Do i need 4 auxillary inputs? Or just 2...Because On my cd player I have a splitter in it so that I can have 2 cables. I dont know why I would need 4. Also I could really use an easy wiring diagram on how to hook this baby up. Here are the stats for my subs and amp :
2 12" Audiobahn Subs
Frequency Response: 24Hz-1kHz
Magnet Weight: 45 Oz
Efficiency: 92.1dB
Impedance: Dual 4 - 2 - 8 Ohm
RMS Power Handling: 400 Watts
Peak Power Handling: 800 Watts
Mounting Depth: 5-1/4 Inch
Size : 12 Inch
Amp: Directed Audio 750D
Dynamic Power Rating: 750 watts
S/N: > 80 dB
Freq. Range: 20-250 Hz
Damping Factor: > 50
Input Sens.: 150mV to 8V
Rated Power @ 4 ohm: 275 Watts
Rated Power @ 2 ohm: 400 Watts
Rated Power @ 1 ohm: 600 Watts
Rated Power @ 4 ohm Bridged: 800 Watts
Rated Power @ 2 ohm Bridged: 1200 Watts
Crossover: var. 18dB low pass, 30-250 Hz
Bass EQ: Yes 8 dB
RCA Output: Yes, MONO
Protection: T,S,D,R
T=thermal, S=short circuit, D=DC offset, R=reverse polarity,
Ok, I would like it so half of the amp wattage goes to each sub. Here Is a picture of the amp.
If any one can show me diagrams, and or pictures that would be most helpful.
Also, In the back of the box I am having 2 3 1/2" Port tubes, one on each side. And Im going to make a separate box in the middle to house the amp. Is there any objections to that? Because i need to know before i start building tomorrow.
One last thing...Sorry. What should this be set on so that it sounds the best?
Judging from what I can see and what I found about that amp. And if its like other mono amps that have 2 speaker terminal hook ups. To run the amp at 2 ohms you attach one sub to one of the +,-, speaker terminals and the other speaker to the other +, 1, terminal. If in the first pic far left 4 terminals are 2 positive and 2 neg terminals kinda fuzzy. you only need one set of input RCA's for the amp, looks like the other 2 are output ones. Similar to the type of setup to the mtx 6500D I had check out this manual might help you.
http://www.mtxaudio.com/caraudio/archive/NDM186.pdf
Looks the same to me. Hope this helps.
MDC wrote:Judging from what I can see and what I found about that amp. And if its like other mono amps that have 2 speaker terminal hook ups. To run the amp at 2 ohms you attach one sub to one of the +,-, speaker terminals and the other speaker to the other +, 1, terminal. If in the first pic far left 4 terminals are 2 positive and 2 neg terminals kinda fuzzy. you only need one set of input RCA's for the amp, looks like the other 2 are output ones. Similar to the type of setup to the mtx 6500D I had check out this manual might help you.
http://www.mtxaudio.com/caraudio/archive/NDM186.pdf
Looks the same to me. Hope this helps.
What did you mean wire the other speaker to +,1, ?
did you mean +,-, ?
Yup thats it sorry man. +, - not +,1. Hoping that helped you a bit. If you only hook up the one speaker to the set of +,-, then it will run at 4 ohms x 1rating of the amp, if you plug in both speakers to both speaker terminals then it will run at 2 ohms x 1 rating.
4 RCA jacks? Thats simple enough, if it's a mono block, the input is labelled input, simply match the colours, the other 2 RCA's are for output to another amp, so you dont have to splice/split RCA wires from the deck. bat (12v), gnd, and rem (or p.connect) are easy enough to do. batt is to the battery, gnd is to the chassis (just use the batt wire and tap it to a place you want to put it to see if there's a ground there... thats what I do, make sure to have plenty of fuses if u use them XD), and of course, rem is from the deck. speaker terminals on a mono amp, if there's two + and two -, they're both the same channel. simply connect + to + and - to - and you'll be fine (or differently if you have a custom setup that requires different phases). that's about all ya need to know... I got a diagram too that I made of my camry's system a while ago:
that isnt exactly how I described above, but relatively the same. This is how I wired an amp in my camry with a deck without a REM output, or RCA jacks.
Nice, that does answer alot of questions. But I have just 2 more. What settings should i use for the last picture i provided? And how should I wire the subs? I was looking at this site and i was wondering which one to look at
click
for the most power, use the first diagram. But you have to make sure the speakers dont overload the amp. But because it's 1 ohm stable, you'll be fine. Dont worry about that "bridged" power rating stuff because... it's a mono... technically it's always bridged. But, like I said before, wire them using the first diagram, you'll get a 1 ohm load, your amp SHOULD be fine (if it's really 1 ohm stable... I've had a couple that werent...) if you're afraid it wont handle that kind of a load, wire it using the second diagram for a 4 ohm load. you wont get nearly as much power, but every car amp I've seen will handle that load. (load is ohms by the way).
Here is a diagram for your amp that I made, apologies if it's confusing.
The power and ground wires are backwards, meaning the ground is the power, and vice-versa. But the power still connects to the battery and the ground connects to the chassis.
As for the amp settings... You have to tune those to your liking. I usually turn the gain up until the bass doesnt increase anymore and the x-over up so I get more low-frequencies out of it (aka, more bass). But it's up to you, thats how I tune them though.
BTW, the subsonic filter sucks, at least for me. When I have it on, short bass hits sound more like pops. When I switched it off, sounded great.
Hey, I had a 4 gauge amp kit with a 3 foot 4 gauge ground wire. Its way too short so i went out and got some more, but i got 2 gauge cuz thats all they had....is there anything bad about using 2 gauge? Is my amp gonna blow, lights dim etc?
Your ground should be as short as possible.
if its your ground wire, then good, means you got a better ground. bigger wires wont hurt anything as long as your ground wire is at least as big or bigger than the power
Hey since i wired these up as 1 ohm, is this going to blow my speakers? Check the stats of them up top
ok well now i have a bigger problem. The rubber foam surrounding that is around the sub, not the gasket but part of the speaker. has a small hole in it, the size of a screw hole. What should i do? Also, THEYRE NOT COMMING ON! WTF. I wired em just like you showed me. But here is where im kinda concerned. The terminals to hook up the speakers, Look like this > OO + | - OO
They have 2 holes for each.....i just stuck one wire in each hole....is that where my problem lies?
check if your amp's power is on. if not, then the problem is somewhere within the power, or you got a bad amp. I find the best way to check is find a 12v DC source, and wire them up so you can see each and every wire so none of it is hidden (in other words, if you have a spare battery, find some spare short speaker wire, and connect it using that, and use another short speaker wire and wire that from the battery to the REM so it turns on).
If it's powered on, double check the RCA wires, maybe you put them in the output jacks? if thats not the problem, then check the sub wiring. it has 4 speaker terminals? so wire one sub up to one set of terminals (one +, one - of course) and wire the other one the same way on the other set of terminals.
Be sure to check different things:
If the amp is on, look for a protection light (most amps have them)
If the amp is on for a while, feel it for heat, if it's warm, chances are it's not 1 ohm stable, and you'll have to wire the subs differently if so.
lightly push on the center of each sub, if you feel what I describe as a grinding sensation/sound, it may be blown.
check all the wires, if the power wires are stripped where they shouldnt be and are touching the frame, tape it up.
Make sure everything is wired correctly (aka speakers arent wired + and +, RCA's arent in the output jacks, etc.)
hope that helps.
take a better picture so we can read whats written on the amp and possibly label the terminals with numbers and we can tell you what to attach to what number. Might be easier that way.
Hey, everything works....but the amp is warm. Please tell me its still 1 ohm stable
subs work too? if it says 1 ohm stable, then it should be one ohm stable. Amps normally get warm, if you feel it's abnormally warm (or have a friend/professional check it) then it may not be, or there's something wrong with the setup.
yeah the subs work too. Sounds great except it hits alil too hard. Is that because there is too much power going to the amp? Anyways. Hey i went to this place called finishmasters and they have this sound deadening mat that is just like dynamat but for 24 bux you can get 7 12"x12" sheets. Im gonna try it and see how well it works because my trunk top rattles outside the car like crazy.
Make sure you got your gains set correctly, that'll @!#$ things up worse than a car wreck.
reducing car rattle transfers more vibrations to the ground and outside air, instead of the car absorbing all the bass (hence why it always sounds so much louder inside than out). I've had a few people here in town drive by and knock the air out of me... always wondered what they're using. A friend of mine with 4 12" subs in his back seat (box in place of the seat) makes my car rumble a bit, but only when his windows are down and he's runnin my bass CD. He runs 4 sony explod's on an MA Audio m1280i (600w x 2 @ 2 ohms) and a Scosche 550w amp from walmart (surprisingly powerful??)
You say they hit a little too hard and the amp is a little warm? Turn the gain down until it's where you like it/no distortion, whichever comes first.
Yeah its alright now, i have the gain set on quarter of the way to max and its really loud. Sounds good. I will post pics when im finished.
