Thread: What's up with my BRAND NEW speakers??

So I should be getting a 4 channel amp right?

And what about hooking it up?

Originally Posted by Aksor

From personal experience I know that most head units start to clip pretty badly at 3/4 volume. I actually tested a few using a test CD and monitoring the output with a scope.

Each time the sine wave clips (flattens out) the speaker is actually receiving a constant voltage that turns the coil into a heater and blows your speaker.

So they could be blown already?

You only need a 4-channel amp if being able to fade front/rear is important. If not, you can run all 4 speakers with a stereo (2-channel) amplifier. About buying amps... I've bought 5 amps used off Ebay, and havent had a problem. I would stick to proven amps (old-school fosgate, PPI or Orion) and only buy from people with a high feedback rating. Here's some good 4 and 2 channel 50 watt per channel RMS amps Ive found for you:
http://cgi.ebay.com/ws/eBayISAPI.dll...725114918&rd=1
http://cgi.ebay.com/ws/eBayISAPI.dll...725114956&rd=1
http://cgi.ebay.com/ws/eBayISAPI.dll...725499724&rd=1
http://cgi.ebay.com/ws/eBayISAPI.dll...725125537&rd=1
http://cgi.ebay.com/ws/eBayISAPI.dll...724789381&rd=1
http://cgi.ebay.com/ws/eBayISAPI.dll...725131200&rd=1
http://cgi.ebay.com/ws/eBayISAPI.dll...725261411&rd=1

Good luck!

So if I bought a 2 X 100 amp and I hooked up all 4 speakers to it would I essentialy be giving them only 25 W each?

And should I be looking for a 4 ohm?

Then you are taling bridging and OHM resistance. When it comes to the 4 speakers in yer car (8 for us audiophiles) DONT BRIDGE THEM. A 2 channel amp runs either 1 or 2 speekers, not 4. Yeah of course you can but for our purposes, I wouldnt. I wont get into Ohmage and all that crap but basically an amps # of channels shouldnt be exceeded unless it is said to be LOW OHM STABLE.

I personally LOVE 5 channel amps when you dont want to be a $$$$ f*er and have 1 amp for every speaker and like 4 batteries to run it. For people who actually drive their cars to work, school, food etc, a competition sized audio system is very impractical. The basic rule of thumb IMO is that u buy a 4 channel amp to run your regular door speakers, and a 2 or 1 channel to run your 1 or 2 or even 3 or 4 subs. Subs run different than full range speakrs, and the OHM loads are much easier to understand.

I love 5 channels like i said, Rockford made a couple and stopped. In fact its hard to find a 5 channel cuz I think like all $ making ventures, you spend more when U must buy 2 amps.

I got a RF 5 channel 600watt. 200 for the subs (100 each bridged) and 75 RMS to the infinity reference components i got. Dont let people tell you, awwww man i got a 1000 watt amp yo, who cares. Blow your speakrs, or your ears and what will you have then?

To answer yer question, almost all full range speakrs are 4 ohm. Finding an 8ohm might be tough. Run a 4 channel capable of doing AT LEAST the minimum RMS the speakers call for, and NOT MORE. More is not good, but niether is less, but less wont blow it. If you want subs, buy another mono or 2 channel to run it and if you are gonna bridge two, MAKE SURE those are 8ohm and not 4. UNLESS of course your amp is bridgeable to 2ohm, which costs $$$$ and makes a TON of heat. Stick with 4ohm stable.

The link I gave to the Hifonics is the same person I bought my Hifonics from (though mine was a higher end model). Good reputation and was quick to respond to emails.

OK.. That Hifonics one you pointed out...

ZX4400-High Power
4 x 55 Watts @ 4 Ohms
4 x 110W @ 2 Ohms
2 x 220W @ 4 Ohms

So I would only be getting 44 X 55 Watts cuz I should run it at 4 ohms?

That is correct, and remember that's peak wattage, not RMS
(it's still plenty for a non-show stereo)

Originally Posted by tbird2340

OK.. That Hifonics one you pointed out...

ZX4400-High Power
4 x 55 Watts @ 4 Ohms
4 x 110W @ 2 Ohms
2 x 220W @ 4 Ohms

So I would only be getting 44 X 55 Watts cuz I should run it at 4 ohms?