Need help on 3ohm components with 4ohm amp

[Luv2xlr8]

Ok, I'm totally lost when it comes to audio. Installing i can handle but that's as far as go other than basic watts and RMS.

I'm thinking of putting in my Kenwood KFC-p708 3 OHM set in the front of my Sonic, the thing is, what would happen if I hook them up to my 4 ch amp that is 4 OHM and my rear speakers are 4 OHM as well? I've searched but could not find a solid answer?

The kenwoods are 65watts RMS, rear are Alpine type-r 100watts RMS and my amp is 4ch 60watts RMS with a head unit supposedly at 22watts RMS 4ch pioneer deh-8400BH.

Help would be appreciated. Thanks

 

[sonic007]

It will be fine. Most of those amps are 2 ohm stable. It will just be a bit louder. Just watch the amp it may cause it to heat up a bit more.


Sent from my iPhone using Tapatalk

 

[Luv2xlr8]

Heat up a bit more? So say I was listening to music like for 2 hours straight, should I be worried a bit? Or don't play it too loud for long periods of time?

My front factory speakers a blown a bit, so I was just going to install them from my civic and put them on here.

 

[ChrisJ]

This may make you feel a bit better.

2 ohms, 4 ohms, 8 ohms is a nominal measurement. an 8 ohm speaker may dip as low as 4 ohms at certain frequencies and may go up to 15+ ohms at other frequencies.

That so called '8 ohm speaker' can look like anything from 4 to 15+ ohms to the amplifier especially if a passive crossover is used.


Point is, that 3 ohm speaker will almost never look like 3 ohms to the amplifier so its really no different then a 2 ohm or 4 ohm nominal speaker. Its just a general guide and as sonic007 said it will be fine. If the amplifier was running borderline hot to begin with it may cause a problem but that shouldn't be the case.


Overall a 2 ohm speaker looks like a lower impedance then a 4 ohm and that 3 ohm will appear slightly lower then a 4 ohm but nothing will care.

This may give you an idea of what I'm talking about.

 

[sonic007]

Yea as long as the amp is out somewhere it will be fine. 3 ohm is just the resistance of the speaker. Amps usually run anywhere from 2 ohm up to 8 ohm. The higher the number the higher the resistance. So quieter the speaker. The lower the resistance the lower the number. But lower resistance means more heat. Most setups you wont tell a difference.

 

[Luv2xlr8]

.....wow.....ok so I'm fine.

Chris, all that info in your post swelled my head pretty big. Lol

Thanks again, learned something new.

 

[sonic007]

Haha wasn't gonna go that detailed..Tried to keep it simple..Great write up though

 

[Luv2xlr8]

Yeah, thanks guys. Quick response too.