13w7 resistance

[07silvy 10+ year member]

Well, i picked up a used 13w7 this past week and wanted to ohm it all out before i built a box for it and all. It ohms 1.5 on both sides. I wire it up in parallel and it went down to .7, But when i wired it up in series it only went to 1.8. Why is the ohm load so low in parallel. Shouldn't it be 3 ohms?

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[>>SQL<< 10+ year member]

Parallel should be .7

Series should be 3.0

Perhaps you made a mistake with your testing

 

[07silvy 10+ year member]

I tested and tested, making sure i got good connections with the meter. and all of the other tests were spot on. But when i wired it up in series and tested it started at 2ohms and then dropped down to 1.8

 

[THATpurpleKUSH 5,000+ posts]

From what I could tell, the owners manual says 2.41 ohms dc resistance and divide that by 4 for parallel so .6025. Hope that helps.

 

[07silvy 10+ year member]

issue was with the gauge i was using.. everything ohmed out fine with a good meter... Now i have a bad voltage drop I have to find that is causing sub to cut out. Redid the ground wire but im thinking that 4gauge wire is not going to be enough with the new amp i just put on it. But my lights are dimming an awful lot too...

 

[kramer_212 10+ year member]

Big 3 my friend

 

[TheUnderFighter 10+ year member]

Big 3 my friend

^ this!

What amp are you using?

 

[07silvy 10+ year member]

trying out a pioneer prs-d5000spl