dj speakers?

Question

i have an amp that plays in stereo at 8ohms at 300 watts per channel now i have two 15's that are 400watts and are 4ohms what do i have to do?? do i connect them like any other speaker or do i "wire" them <

well yeah the amp said it was stable at 4ohms its and audiopipe amp..but my question is if its ok to have the two 15's which are 8ohms with the 4ohms speakers while the amp is in stereo at 8ohms or if i bridged it and it would be at 4ohms with 800watts??

and NO its not a car amp/equipment its pro as in dj as in house amp and speakers but two of the 15's are 4ohms and the other two are 8ohms

Answer 1

What brand/model of amp do you have? If it's rated at 300W output at 8ohms, then a 4 ohm load would drive the amp harder and most likely put out more power like 450W/ch. @ 4 ohms.
Just because a speaker says it's 600W doesn't mean it requires that much. It would do fine with 300W. The wattage rating on speakers is the max it can handle before you fry the voice coil. What you need to check is the specs on your amp to see if it is "4 ohm stable" or even "2 ohm stable" as mine is. If you took your two 15's and wired those in parallel, your amp would effectively see 2 ohms and it would drive your amp hard but if it's a decent amp, it should be able to handle a 4 ohm load no problem...

Answer 2

I see we are talking about car stereo amps.

First of all, look at their ratings. Do you see the word continuous? No, and the reason for that is that, 1. They only mean peak output. 2. There will be one hell of a current draw from 12v to swing that kind of output.

I don't think that anyone can tell what you mean when you start throwing ohms/watts about. Are the 15s 8 ohms each? If paired, that is 4 ohms. Are the other 15s 4 ohms each? If paired, they are 2 ohms. All four would be less than 2 ohms, and this starts to turn into a kludge that will probably sound horrible and end up frying your amp. These amps are designed for low-ohm work because that is the nature of 12v equipment, but they do not rate it below 2 ohms, and that means you shouldn't go there. But remember, you are going to have to have a lot of current available to the amp to push anywhere near it's power rating. There is a reason that 4 and 6 gage cables are used in the power supplies of car stereos.

When you say DJ, we start to assume that you are going to be in the business, and do parties, weddings, and the like. This is not acceptable equipment for that purpose, and the power supply that you would need to make this stuff work would be enormously expensive. If you are seriously thinking of this, get some good DJ equipment. If you are going to hang it out of your car once in a while, bring a big power supply or a battery charger, because you will need it. Stay above two ohms.

Answer 3

Hi there.If you connect your 4 ohm speakers to your 8ohm amp.the amp will try to deliver double its output to your 400 watt speaker which means your amplifier's power supply must double it's current delivery to the output transistors to work Don't forget the impedance rating of your speakers is a nominal rating which means average because the impedance will vary according to the frequency range of the speaker. It could drop as low as 1 ohm and rise as high as 40 ohms.
So if you think your amp may get into trouble why not just connect the 8ohm speakers instead.