Infinity 2 Ohm Speakers

Ryan from Ohio · Post by **Ryan from Ohio** » Sat Dec 13, 2008 4:16 pm

http://www.infinitysystems.com/car/prod ... Region=USA

True Four Ohms— All Kappa speakers feature two ohm voice coils. Original factory-installed speaker wiring in many cars is 18-22 gauge. This wire, and heating in the voice coil when power is applied, increase the impedance “seen” by the amplifier or head unit. The impedance of Kappa Speakers has been adjusted to compensate for this increase and can be safely driven by any head unit.

http://www.stealth316.com/2-wire-resistance.htm

10' Wire ->
20Ga = 0.1036 Resistance total
16Ga = 0.0408

Discuss.

William from NOLA · Post by **William from NOLA** » Sat Dec 13, 2008 4:50 pm

omfg... wtf...

BBQ anyone?

Infinity is going to have a LOT of lawsuits.

MobileAudio219 · Post by **MobileAudio219** » Sat Dec 13, 2008 6:49 pm

Some thing doesnt add up....

Ryan from Ohio · Post by **Ryan from Ohio** » Sat Dec 13, 2008 9:40 pm

I like how they try to factor in the resistance of the wire...lol

Bwcad1 · Post by **Bwcad1** » Sat Dec 13, 2008 9:46 pm

aint gonna matter everything will be fine with them. ryan is that resistance AC or DC? but in the end because of impedance rise and the impedance curve of the speaker the unit will see way higher than 2 anyway.

Post by **GlassWolf** » Sat Dec 13, 2008 9:52 pm

it's as if someone thinks that circuit impedance is a static in a functioning system or something.

amusing.

Ryan from Ohio · Post by **Ryan from Ohio** » Sun Dec 14, 2008 6:12 am

Bwcad1 wrote:aint gonna matter everything will be fine with them. ryan is that resistance AC or DC? but in the end because of impedance rise and the impedance curve of the speaker the unit will see way higher than 2 anyway.

Im pretty sure when you measure the Ohm of a wire its going to be DC Resistance...

GlassWolf wrote:it's as if someone thinks that circuit impedance is a static in a functioning system or something.

amusing.

Please elaborate, a little :)

I found that quoted paragraph interesting off their website.

If you think it doesnt matter Bill then whats the difference between one of these 2 Ohm speakers and bridging two 4 Ohm speakers?

Bwcad1 · Post by **Bwcad1** » Sun Dec 14, 2008 6:24 am

There is greater resistance with DC over longer runs of wire. look at our cars we have to use 0 gage wire to support 300 amps but the wires coming into our house are wayyy smaller than that.

it doesn't matter if your bridging door speakers your probably not the brightest person in the world. regardless your load is ever changing and most likely wont ever reach your 2 ohm load. So even if you bridge 2 2 ohm speakers to a dcr of 1 ohm your impedance rise is going to be around 4 ohm anyways. you would probalby be fine bridging two for ohm speakers to 2 ohm off your head unit as well, just kind of one of those things. its still better to use the correct dcr for your headunit but most likely you wont have any issues.

What glass is saying is " its like someone thinks that the resistance is a constant that it doesnt change through the system" Correct me if im wrong glass

Ryan from Ohio · Post by **Ryan from Ohio** » Sun Dec 14, 2008 6:43 am

Thats the impression I was getting also Bill.

Theres no way to measure AC Impedance in a wire I know of? Isnt AC Impedance an average anyhow?

My point of the initial post is theres an obvious difference between the AC Impedance of the rated speaker and the use of DC Resistance in the wire. Even at that it doesnt add up.

Cant say Ive ever tried to bridge two speakers to a head unit... Thats always been a giant no-no for as long as I can remember.

Bwcad1 · Post by **Bwcad1** » Sun Dec 14, 2008 6:56 am

In the end its a dumb marketing tactic but it will probably be ok.