Box Rise??

[iLL Ridge 10+ year member]

So I've gone meter happy.

Measuring the ohms on my subs. 2 ohm dvc. I each sub wired at 1 ohm.

The meter climbs a lot from the 1ohm dead resistance to over 80 or more on bass excursions.

I wonder what that means for power/spl/frequency response?

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[BlactimusCrime 10+ year member]

well, for one, as the coil heats up from play, resistance increases

 

[Boomsday 10+ year member]

From experience I usually wire to .5ohms or lower, because of such rise

 

[groundpound4200 5,000+ posts]

how exactly are you measuring this?

 

[iLL Ridge 10+ year member]

2 leads- one sub wired at 1 ohm- dmm set to read ohms.

 

[Sleeklsc 5,000+ posts]

From experience I usually wire to .5ohms or lower, because of such rise

x2

I had 3 r's wired to .67 and the final load was 1.58ohms. Wish i knew about imp rise when i first started w/ ca 10 years ago.

 

[duro78 10+ year member]

With that being said should it be normal practice to wire subs to a lower ohm load to compensate for the rise

 

[iLL Ridge 10+ year member]

So I wonder if a sub that has a lower impedance load during bass excursions is a better sub?

Seems like the amp would produce less power when the ohms climb like that?

 

[MONSONwarrior Premium Member]

that's the whole point of people running .5 ohm daily, after rise they still get the power they need but almost never actually see .5

 

[iLL Ridge 10+ year member]

I tried my pg1200 rsd at .5 ohms- it'll play but once I get on the volume- it'll protect. It will run all day wide open at 1 ohm. It's rated for 1200@2 ohms.