how many input amps does a car stereo amplifier require to work properly?

Question

im trying to set up a car stereo system in my basement and am trying to see how big of a converter i am going to need

Answer 1

Depends on how many speakers u have running off that amp. Say u hav the following setup:

500w subs(2)
75w speakers(6)
3w tweeters(3)
80w head unit(1)

you would need a total output power of 1539w, you should NEVER putt more amp power into your system than speaker power. so you would probably want like 3x 450w amps. totaling 1350w which is only 189w less than ur system can take. Good luck w/your project

Answer 2

First, I highly discourage attempting what your are trying to do. It is very difficult and I have seen people hurt. I want to point out that your are going from 110 V to 12 V. Although the voltage will decrease, the amount of current will increase to provide equal power output. Remember, its the current that kills not voltage. But, if if you are determined there are a few calculations to find the correct size converter for your project. First, divide the total wattage output by the input voltage on the amplifier. Ex.(100W/12V=8.33A) W=watts, V=voltage, A=amperes. The dividend (8.33A) is the required ampere output of the power supply. This is doable with a basic power supply from your local Radioshack. But if you are using a larger amplifier, such as 600w or 800W, it will require a much larger power supply that will probably have to be custom made. Still it is unlikely that anything larger than 300W is possible. It will take less effort and money to purchase a home theater system than to set up an equal car system in your basement. You can purchase a good home theater system at your local Circuit City for $200, where a large power supply alone can cost around $150.
Hope this information was helpful.

Answer 3

vehicle amps are many times rated in Watts PMPO ( height music skill Output ). it is a decrease skill score than Watts RMS , yet is shown as a more advantageous ascertain . that is fullyyt a sales gimmick. A one hundred sixty Watt RMS Amp would have an truly extreme PMPO ascertain ( in extra of 2000 i'd suspect ) . when you're after extreme powered audio equipment , continually be guided by using the RMS ascertain.

Answer 4

Like godspeed said, take your wattage output divided by voltage. Do not to forget to add an extra 20-40% to that number though depending on the efficiency of your amplifier.

Answer 5

If the amp has a fuse (or more than one) add the ratings up and you have your answer.

Answer 6

5A should be plenty but I guess if you have a large amp then it could be higher...