Added: 3 years ago
From: CheeseburgerLahey
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  • I have a 2 channel amp,500 watt max and a pc supply 250 watt will it run on max or on half?And sub is 600 watt max

  • insufficient load on the psu , hook up a taillight lamp to either the 12 or 5v (depends on psu age)

  • try taking all the orange wires put them together and then put your brownwire with it (if u dont gotta brown use grey) if tht dont work try putting the brown (or grey) wire with 1 red wire lemme kno how it works...worked for me

  • Hey idiot.

    The power supply is 250 watts and the amplifier is 1000 watts

    Does that make sense?

    Get a 1000 w power supply and don't ever turn the gain more than half on the amp

    If the amp isn't actually 1000w rms then you don't deserve any help

  • @casemods I'd say it makes fine sense. Especially if you have a work bench and you want to do some testing for the amp. The amp doesn't need 1000 watts to turn on. So either keep the gain down low, or use only your HPF with the low freqs down, and you should be fine. But you're correct in that he won't be able to use the amp to it's fullest potential. ..or anywhere close to it. Should be fine for a test bench though.

  • dude i solved it for myself.psu powers down because of the amp(the trigger /switch on the amp needs to be connected after the psu starts spinning).disconnect trigger/switch cable on amp and connectit few sec after you powered on the psu.

    thats it i think! :)

  • What psu you have? I have 550w psu and 1000w 4 channel amplifier. Will this works? If i only use 2 channels, i think it works...

  • get a couple good psu's i mean look at the 12v amperage and get two with atleast 20 amps @ 12v and hook all the yellows together from both psu's and if it still doesnt work get a third

  • i have a 800 watt amp and a 250 watt power suppy is this safe

  • where do you put the wires in the psu?

  • You have probably a new psu that if a yellow wire touches each other the psu goes into safety you should just put one yellow wire from your psu

  • are you running 4 12 volt rails? ..... 48v? god jesus.

  • @kyismaster it 4 bro but the voltage stay the same only the amp rise

  • you need atleast 500w

  • yo mine does that to. first i had only 1 +12v from the one that has 2 connecters n 4 pins n the 1 ground wire from the same pin, but wen i added all of the yellow and blacks n turned it up my psu shut down n it never turns on now!!!!!. i think i blew it

  • Comment removed

  • same thing happend to me and i have a 1000 watt amp and you have to get a pcu that is at least 750 watts i have running right now one 350watt pcu and another 650 watt pcu equaling out to 1000watts so it works just fine with me. at first when this happend to me i had the same thing happening in your video

  • @Bluntskaters

    PSU - Power SUpply

  • @4c00h Power Suply Unit ;) but nvm ;P

  • i got a little clarion one that has 200 and have no fucking clue what it does

  • hello. looks is that I have a JVC KDG 230 to take away my car and I installed it on my room and wanted to know if I can connect to a source at or atx?. and as would the installation step by step, because to know which wire is between all those who are, for example: positive 12v is a yellow and black-12v, as that is among all the black and yellow cables that brings power source. HELP. THANK YOU

  • put one yellow 12v on the remote. Then find the green wire of the cpu and touch it to a black ground wire. Thats it

  • you need a jumper between the positive and the wire in between. its called the remote on. normally in a car its connected to your head unit and allow the amp to only turn on when you turn your stereo on. by jumping to the positive it gets the signal to turn on and stay on.

  • on the amp it should say 3 things, Ground (black), on power(red), and +DC 12v (yellow).. put Both of the wires together fom the power on and +DC (or jst take a lil wire and run it from the +dc into the pwer on. then it will work i have had a amp hooked in my room and still got my lil amp if u wanna see a pic of the wires

  • my psu dosnt have yellow wires only red and black white and blue and one purple

  • I know whats wrong! You need to check the fuse rating on your amp and buy a PSU that can provide that Amperage on a single rail. I recommend CORSAIR.

    Also, make sure that your amp has regulated power supply unit bulit-in, if not you cant get the max power of your amp @ 12V.

  • im proud of my 14 volt, 30 amp power supply, lol i have a video who wants to buy it, it weights about 40 pounds

  • You don't need to have every yellow and black connector, i don't recommend this any way because a house only outputs 20amps, where most amplifiers will need over 50 amps.

  • is the Yellow Positive?

  • rule of thumb not all 250 watts is 12 volts. look in manual to find out how many watts of 12v then buy more psu's and wire them in PARALLEL + to + and - to -. i run double the input watts to my 500 watt amp still 12 volt. i have 3 500 watt power supplies and all together they put out about 1200 watt of useable 12v power. that way my amp isnt mad underpowered so my voltage wont drop to below 11.7 or so.

    dont run your amp in the house unless you have way more power on input than the amp puts out

  • take another wire loop ur remote to ur positve will keep ur amp on better the useing a switch u already can turn ur amp off from ur psu

  • That happens to me too, i have 300w psu and 400w car amp please can anyone help me?

  • look at what i posted above.

  • this same thing happend to me what i did is put it on the highest number it has on the red switch and turn it on it will stay on i think the green light or red light wont turn on but it ok then switch the red switch to the lowest number see if that works

  • youve got multiple 12v rails attached to the amp. u should only be using one of the 12v rails and not several. The reason it is shutting off is because it could over heat quickly and start a fire. so connect only one yellow wire and one black wire and you should be fine.

  • mine play while the radio is on mute how can you fix dat

  • @MrTray247 Run a switch. You can buy one at radioshack or wallmart and hook that up on the wire going from + to remote. You will have to flip the switch every time you mute the radio though.

  • it matters how many amps u get at 12v+ not the watts of the psu oh yea dont get shocked or start a fire

  • Since there is no car stereo there you will need to bridge it to get the amp to work BTW (FYI) DC VOLTAGE KILLS in small amounts unlike AC if you do not know what you are doing don't play with your life learn and get help from those who do know watching a video is not like being shown in real time by a pro be safe and good luck

  • Hey good work man hope you can get a getter video up soon to those asking how to questions..are you sure you should be attempting this especially when asking where do i connect the RCA any way here it is the RCA jacks are those jacks on your little PS2 cords that connect to your TV connect the damn jacks by color think about it...now you might need to bridge your remote line to get it to work that would be the controller wire going from your car stereo to the amp

  • where do i connect the rcas??

  • hey i got everything done, my amp is powered up already but when i connect my rca inputs to my radio the subwoofer hooked up to the amp doesnt work yet the speakers do and the amp light is on and working

  • make sure that the "OUTPUT" on the head unit goes into the "INPUT" an the amp....

  • What kind of power supply should i get, im only gonna run it on a 300 watt amp? if anyone could send me some tips would apopreciate it.

  • my psu doesnt have a green wire? any one no??

  • Set the gains and EQ in the amp to its lowest value and try it.

  • why are you powering a 1000w device with a 250w psu?

  • Exactly

  • how do you know what power supply to get

  • u need to find out which wire from the main harness is ur DC turn on.(usually the only green wire) then run a jumper wire from the DC on to any black wire(which is ground). this will keep the PSU runnin because it turns the fan on.

  • Yea its green to black if you do green to grey it will hurt the power supply green is power turn on and grey is power ok

  • A circuit will only pull the current (AMPS) that it needs. If your circuit requires 12 Volts and 60 AMPS you can hook a 12 Volt source that is capable of supplying 1000 AMPS and it will still only draw 60 AMPS. I Love when people who have no idea about electronic/electric theory try and sound like they do. The AMPS that a power supply can, well, supply does not matter, as long as its equal to or more than required by the circuit, period. pownd

    "Skij710"

  • But what happens to the other 940A?

  • Finnaly someone who knows what hes talking about , A good formula i use is the power of the amp divided by 12 (12v) = The amount of amps you need to power the amp at full gain.

  • get a car battery instead of a psu

  • and burn the house down? or wreck the carpet with battery acid?

  • @element291 no acid in PSU. but will burn down house lol

  • DUH. Of course dude! 250Watt will never power 1000Watt.. Why'd u even try? You need a much more powerful psu... (idk if it'll work but maybe you can run multiple supplies in parallel but idk if thats a good idea lol)

  • You don't wanna Parrallel them because you can burn up the amplifier maybe series will work with some sort of current limiter.

  • hey my will just turn off if i turn it too high what can i do

  • You Need Higher Rated AMPS On Your PSU..Only Then You Can Full Gain.

  • it meens it is over heating, it happens with mine in my car. try turning the output down a fraction, it helps. : )

  • Yeah you have to get like 5inch wire and short your 12v on your amp to the remote on your amp then your amp will turn on, trust me.

  • Linking the 12v and the remote is what i was doing, and it still turns off right after the video ends...

  • That PSU is a bunch of crap, It'd work on my amp (Its like 300wmrs) but a big amp on startup requires loads of power, and im guessing your PSU shuts off after you turn it on? (fan stop spinning) if so go on ebay and try to buy a powersupply like 500-750w that has like 35A+ on a 12v Rail.. 35A wont fully power that but should let you blast about 400wrms out of it, and thats enough for in-home anyway.

  • my does the same thing, after you hit the switch, just turn it off and wait for you to hear it power down than repeat until it stays on, once it stays you never have to shut it down

  • yeah he is right i olny have one yellow wire hooked up and mine works perfect.

  • reason y its turning off coz u hav 4 12v rails (yellow) connected to ur amp. ur psu rail must hav bout 16-20 amps. an amp takes in only 20 amperage, which means say 20amperage times 4 =???........exactly ur amperage is exceeding so ur amp cant handle too much power. even tho its 12 volts. try one 12v wire.

    and connect 1 cable from remote to 12v on amp

  • are you stupid? a Class A/B 300wrms Amplifier needs about 32A, And a standard car battery is 12V 60A. You can use how many rails you want.. As long as you dont exceed like 140A (Unless your Amp clips and it needs more A).

  • Comment removed

  • Your Right..Thay Dont Understand It Will Only Draw What It Needs. If PSU Does Not Carry Enough Amps He Will Have No Gain & Sound Like Crap..

  • Yeah and sometimes it may fail (PSU) to deliver the amount of current needed. I just run a high current deep cycle batt in a boxed up crate and everything is fine.

  • Any atx psu should work just fine if wired right.

  • i took out a power supply from a computer and i tried to hook it up to a amp and it dont work is it because i have to buy one? or they dont work if u take one out of a pc

  • The camera only had a 16Mb card so the video stopped because the card was full. The jist of the video is just to see how the wiring looks.

  • hahaha the video stops because it blew up when it was turned on!

  • Hmm, hooked up my crappy 720watt jensen and it works fine. That amp must have some kind of safety feature or needs like major amps or something.......... :S

  • the reason it turns off is bcuz you have to have the remote line hooked up aswell you only had the ground and power the remote is just the signal to turn it on so get a small line of wire and run it from the power bridged to the remote---

  • @CheeseburgerLahey This configuration wont allow you to use the full potential of the amp,because the power supply's wattage is too low and the voltage drops significantly and also the power supply's voltage is too low.You have to have it at least at 15,4V or something,because of the voltage dropping under load.There is no substitute for a good old transformer power supply.Its heavy,but its better.

  • Anyone know why the PC powersupply and the amp both shutoff after that green light comes on?  I've tried using 2 power supplies bridged and it still does the same thing.???

  • Would it mess up the amp if i put the two power supplies on at the same time and turned them both on?

  • no it wont it will work fine look at other youtube vids

  • @CheeseburgerLahey

    That's what I wanted to know.

  • @CheeseburgerLahey no it wouldnt, thats what i did, it just gives it more amperage

  • @CheeseburgerLahey yes it will

  • I also just tried it with a 350watt PSU and it does the exact same thing. Hmmmm. anyone know whats going on?

  • @CheeseburgerLahey hey u need a 450 watts psu or higher, what u really need is 12v and more than 20 amps, look at ur psu spec, it mus says yellow +12v 20amps, but if u will buy a higher psu and it costs more than $100 i recomend to buy a 12v power supply with more than 20amps it will work better, some of them are more than 12v, if its 13 volts that will be better, search on ebay

  • @CheeseburgerLahey the reason its not staying powered on is because when doing this process you should have at least the same rms wattage as your amplifier has because if its a new amplifier then it does have new and safer technology so that the fuzes in the amplifer do not blow. if this technology was not in the amp and you were powering it with a 250 watt power supply the fuzes would blow because the amp was trying to pull so hard on the power supply for more energy.

  • @CheeseburgerLahey the psu's have a cut off of max amps and or volts thats probably why your amp goes off :/ hope i helped :D

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