3 ohm speakers....

[Slayerx 10+ year member]

That read 3.1 ohms. If wired in parallel, I'd get about an 1.55 ohm final load. Is this still too low for a 2 ohm stable amp?

Click to read more...

 

[Kold_Killa 10+ year member]

That read 3.1 ohms. If wired in parallel, I'd get about an 1.55 ohm final load. Is this still too low for a 2 ohm stable amp?

You'll be fine. Rise will bring you over 2 ohms. I wouldn't worry about it.

 

[Slayerx 10+ year member]

You'll be fine. Rise will bring you over 2 ohms. I wouldn't worry about it.

Thanks. That is what I figured but I wasnt sure if there was a chance for the amp to see the lower load ever and put it into protect

 

[ciaonzo 5,000+ posts]

If you're reading 3.1 ohms then it's a 4 ohm driver.

 

[Slayerx 10+ year member]

If you're reading 3.1 ohms then it's a 4 ohm driver.

So my D2 sub wired in series reads about 4.2, it's really a 5 ohm sub? I'm not following, care to explain?

 

[keep_hope_alive Premium Member]

you're measuring DC Resistance, not Impedance. Impedance varies with frequency and is affected by the free air resonance and inductance of the voice coil. DC resistance has many factors that influence it's measurement, even your DMM leads and the quality of your DMM. A $200 Fluke will me more accurate than a $20 Radio Shack model. Accuracy costs money. You're also measuring the resistance in the wire and connections you made to wire the coils in series.

example of an Ultra Subs LV10 4 ohm sub:

 

[hispls 5,000+ posts]

Thanks. That is what I figured but I wasnt sure if there was a chance for the amp to see the lower load ever and put it into protect

Very possibly. "Rise" is only valid if you only play a known frequency test tone. Your amp may "see" that 1.5ohm often. SO the answer is really it depends on the amp how forgiving it is. Many woofers that are labeled "4 ohm" by the manufacturer do have DCR of 3 and change....also some 3 ohm woofers actually have DCR of very close to 3.

 

[Slayerx 10+ year member]

Makes sense, thanks