I did do some research……..just don't really get it.

Situation:
'06 Ultra
Stock HK head unit (HD # 76160-06)
Tour-Pak removed so only using 2 front speakers, now it sounds like chit.

Stock speakers are 2 ohms.

Don't plan on amps and all that crap, just want decent sound w/2 speakers.

J&M 7.25" come in 2 & 8 ohm…….do I need to stay with 2 ohm J&M's & why?

Will it still sound good when I re-attach the Tour-Pak with it's 2 speakers?

Thanks for your expertise!!

PHAT PERFORMANCE HAS THEM FOR $219.95 SHIPPED RIGHT NOW!!

 

Think I just researched my own question……

Seems that:

2 ohm are for '06 and up

8 ohm are for '98-'05

Needed to read a little more…….I still don't get it, but I know which one's to buy.

 

Thanks for the shout out! The correct ones for the 06 models with stock head unit is the 2 Ohm models.

 

The why is because your head unit is rated at 2 Ohms. If you hook up a higher Ohm speaker (4 or 8) you'll lose power because the amp (radio in this case) will not be as loud because the resistance is higher (Think water hose and when the hose is smaller then the water comes out at a higher pressure but if the hose get bigger with the same amount of water the flow will be slower).

The J&M's will sound better as they have a bigger cone area versus the stock.

 

Actually, the power loss is due to the fact that the transfer is across an interface where the output does not match the the impedance of the device to which power is being transferred. The speaker rating of 2 ohms is not the DC resistance which is much lower. For example, on cable systems the standard impedance is 75 ohms. Things attached to the cable such as TVs, DVRs, splitters, etc. must match that impedance (75 ohms) or the power transfer will be less and reflections (at high frequencies) can occur. CBs use 50 ohms. The point is, if you do not match your power sink (in this case the speakers) to the power source (in this case the radio system) a lower power transfer will occur.