Good work To protect the ATX again short circuit. It will be better to connect the Green wire (power on) to Relay contact with black wire. And to energize the relay with the 12 v or 5 v accorditly.
So I get a 650w power supply for a 600w mono amp and connect all ground wires together and all 12v wires together and make a psu on switch and hook up my amp?
Hi Great Video i have actually done this project my self and something i found thats good is if you draw to much current from them they normally shut off automatically before they damage them selves. another power source i used was the LED power kits you can buy off Ebay as they actually have a variable voltage from 10-14.5 volts which is super useful however they dont protect them selves so you have to be careful you dont draw to much current from them havent killed one my self yet but i have had one get pretty warm
Is it capable to give 18 amp at 12 V Continiously ? Means rated current at 12 V continiously or it trip if I continuously draw the rated current from it ?
The problem with cheap computer PSUs is that 12V output depends on the load on 5V rail. If there's no load, you will get a very soft 12V rail - voltage will quickly decrease with any load. To get the most out of a PSU like this, you need to put a solid load on the 5V rail. It's a different story with modern PSUs that get 5V and 3,3V output from a 12V rail and will allow you to drain full power from the 12V rail (that's also how you know it's this kind of power supply - max output on a 12V rail will be the same as a total max output).
Tomas Kuruc I just bought a thermaltake sp-850m for a jl360/2. Amp uses a 50amp fuse. The psu is 70a/840watt on single 12v. Would I still need a dummy load on the 5v and 3.3. I purposely got a bigger psu that is also an 80plus bronze to help with heat and efficiency as I need this amp to run at least at 80% load,bridged which will be between 280-360 watts. And this needs to run for a minimum of 5hrs at this load. So I know the basics which is adding all yellow, black and putting green/black. Now what I need help with is efficiency, and stable load. So if that requires dummy resisters etc and where, please shed light or find me a video of someone doing exactly this cause all these video sick cause they never show the system working or if they do, at what volume to let me know it's stable
that all depends, check the actual voltage on 12V rail while the amp is in load, if it doesn't fall below 11,5V, you're all good, if it does, just connect a couple of car bulbs (in parallel) to the 5V rail (red). That PSU has a strong 12V rail and is quite modern, so it might not even have the type of regulation that's used on cheap PSUs.
watts = amps x volts. The chart on the side of the power supply, the one the video shows, has the watts listed for each of the rails, and a maximum overall wattage. Divide that wattage by 12 and you got your amps. Use the proper sized wire for that amperage if you use a junction block, and I wouldn't use a cheap or exceptionally long power cable or extension cord.
and you can run these supplys together to get as much volts as you need. if you hook the blue off of #1 supply and the yellow off #2 supply together then come off of the blue and yellow thats left not used you will get 48 volts. hook 3 supplys together get even more
No u wrong. Please learn electronic. The voltage is still the same just increase the current. But u can't combine all of them cause it have different current output. If u device draw more current then the one with lower current output will burn the ic inside the psu.
Thanks for the vid. Do you have to use all the black wires or can you just use the same amount as the yellow wires? Do you think you could power 2 x 200W car amps with a single 500W PSU? I would like to put 2 in for shaker driver in a car sim seat. 1 for left channel and 1 for right channel.
Du weist schon das PC Netzteile Schaltnetzteile sind oder? Die sind für die Dauerlast einer Endstufe nicht ausgelegt, folglich dessen reagieren Schutzeinrichtungen auch nicht immer und das Ding falckelt schneller ab als Du geiler Sound sagen kannst. Die Endstufe die du dran hängst wird eh nicht mehr als stabile 20 Watt rausgehen, weil die Spannung von Anfang an schon zu gering ist. Wenn man 50 Euro für ein Netzteil und 50 Euro für eine Endstufe ausgehen hat, plus Kleinteile ist das für 20 Watt rausgeschmissenes Geld. Davon bekommt man ne t.amp e400. Die leistet locker 10 mal mehr als die 20 Watt die bei dem Pfusch rauskommen. Strom ist Lebenslänglich!
I would like to power a MTX 8000 12" sub with my old cooler master 500watt power supply. The sub is 400 rms. I was thinking of getting a 300 watt car amp. Would a class A/B or class D amp make best use of a 500watt PSU?
Ok with the voltage but when yhe amp needs amperes what you will going yo do??? I have put it with me US Amps 1600w 4 channel inly a 10inch woofer and the speakers play from cd player but after turn on the volume starts blinking like a Christmas tree..
shefin you would have to get a smaller amp hour battery like a 12v 1ah i think. stay with 12v but get smaller batterys and test witch one puts out 1amp. or get a amp step down off ebay
Hello Brother I always watch your videos I am also interested to make a car audio system inside my house but actually I am a Mechanical Engineer So can please tell me how to get with amplifer and power Supply because I have JBL 1100 Watt amplifer
I figured out if you get a cheap crappy bluetooth speaker gut it then wire the insides to a car sub it works fine.. it works with any speaker, I've tried all 20 of mine
trate de cambiarle una bobina que esta recalentada de una fuente de poder de pc de las que estan en el secundario aun asi la fuente enciende pero se apaga al rato, le coloque una identica de otra fuente, marca el mismo valor de la otra pero no enciende le vuelvo a colocar la recalentada y si enciende, fuente cual es ese misterio?
i did this and after a week for 3 hours a day of playing disco music, the power supply blown up. it wont last because it is not designed for heavy surge during rapid bass kicking. i used 750 watts PSU for 300watt car amp but it toasted some rectifier and resistors.
Let me ask you something,lets say you had a amp and a car stereo and a speaker and you just wanted to check and see if everything works,could you hook it up to a car battery for lets say a couple of minutes? not permanent,just to see if everything is OK? thank you for your time.
@@dntlss you would have to make a simple 12v switch for the amplifier. I dont know about the stereo but i know u can connect an amplifier to a car battery. Exocontralto does it all the time
Hi mate! Thx the video! The thing is I did everything the same as you but when I start it the fan is rolling a short time and turning off. I read many forum sites but no one can give a normal answer. The power supply is brand new. What do you think?
Some atx power supplies will shut off after a while if no load is detected. Try putting a 1A load on the 5V rail. A 5 ohm power resistor should do the trick, just make sure its rated for at least 5W
I ordered an older type of power supply and it is working but I have two power supply now lol anyway I will try the resistor trick. I hope it will be working. Thank you for your advice. :)
The problem (at your side) is with the positive and negative connection with the amp! You have connected positive 12v wire of PSU with negative 12v wire of the amp. Connect positive with positive and negative with negative and your problem will be solved. PSU turns itself off when it senses the improper connection. It's a safety measure built into it.
the problem is that the psu have an over current/over voltage protection that cut the power when it exceed the current limit imposed by the psu. it is possible to bypass those protection by buying some circuit board sold on internet for about 5-25$
how much ampere needed to run car amplifier can we run on seperate transformer 12v 25 ampere or it runs on smps and which one is best for sound output smps or transformer
are bhiya is SMPS se bass tube power on to ho gyi lekin AMP kam pad rahe he, ye SMPS 12 v 14 amp ka he or bass tube ko 30 amp chahiye, meri bass tube baj to rahi he par low amp hone ki wajaha se bhrrrr bhrrrr kar rahi he
mine only puts out 11.4 volts but that will still run 12 volt items - you dont need exactly 12 volts to run 12 volt items - to charge a 12 volt battery to full capacity you need to charge over 12 volts - most cars charge at a max of 14 to 15 volts - anythinig over that things start to fry - ive seen over 18 volts being thrown out of an alternator - thats bad .... charging at a capacity of 10 amps is good - 2 amp to 5 are most trickle wall chargers for batteries.
wiring 2 power supplies with different amps won't give u a higher amp count. your best bet is to find a power supply that has the right power and amps u need. I use 2 power supplies to do my boombox one to run my CD player and lights and another power supply just for my sub
dwayne Wilcott oh im currently running my car stereo on a gamecube power supply and it works fine. But i guess I'll just use one computer psu for my amp that I'm gonna buy soon.
some require to see a load on the 5v rail to stay on...light bulb 10 watt resistor etc. Some have 'sense' wires monitoring voltage connected at 21 pin connector. If you see different colored wires going to same pin these should remain connected together. ie mine had a brown wire connected to orange 3v pin and a pink wire to red 5v pin.
I am currently using trying to build one did all wires same as u my watts on power supply is 350 max an I have a 2500 watt amp pushing a 15inch subwoofer. But if I run volume up to 25 its stays running anything after that it dies??? Help
Your power supply should have at least 150w of headroom more than your amplifier. Your subwoofer works at low volume because you aren't asking much from the power supply, but once you give it a higher load the thing craps out because it is no where near powerful enough to support your amplifier.
Hi, your amp in the real world won't be putting out 2500 watt. You need to know the rms wattage.that usually will be quite a bit lower. Also you need to make sure that any psu you use has adequate amp rating which is the same or better still slightly higher than your amplifier. Check this by simply checking fuses on you amplifier. I would have thought a psu of say 750w minimum with a amp rating of say 60amp would be plenty powerful enough.
Generally .. SUV batteries are 80-90 Ah - 12V . 12 x 80 = 960 watts.There is no problem . If we connect it in to a heavy truck battery (150 Ah ) 150Ah x 12v =1800w there is also no problem with the car audio we know ! In my point of view computer power supply output which we are using is a pure DC as like from battery source. So no need to panic..!
I think you should learn the difference between A and Ah. Saying that a 80 Ah battery is 960W is... well totall nonsense. The 80Ah battery specification meand that the battery has 80Ah capacity. It means that a battery can supply 80A for one hour. Example: if you have a device that uses 10A 12V (120W), the battery will be dead in 8 hours. If you have a device that uses 40A 12V (480W) then the battery will be dead in 2 hours. Calculating Ah x V is.. nonsense.
I'm Using 2 clarion 5 Channel pro audio Amps 3 alpine 750watt mono amps 1 alpine .2 channel amp and dti 2500 mono amplifier a kenwood touch screen in dash and speakers I'm Running 3 mtx 10s 1ohm Running 2 .alpine 10in single voice coil at 4ohm two 3 ohm 8 in And kenwood 6x9 and a Finally aoldschool hx2 12in at 2ohm sounds amazing competition status
just like you said , the 12v converter doesn't give much power to my amplifier and as soon as I turn up the volume the stereo shuts off , so I was gonna go with a 26 amp battery but then I saw your video and looks like a better solution , my amifier is a 4 channel 900 watt max , can you send me a link of a good cpu power supply that will give good power , wud reall appreciate it , thanks
