reading 20.1 ohms

[Jimjam72]

My amplifier is reading at 20.1 ohms need help GETTING to 4 ohms

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[garychoffmann 10+ year member]

The sub is reading 20 ohms? What exactly do you have and how do you have it wired. We can't help anything with "i have 20 ohms, I want 4"

 

[Jimjam72]

Sorry about that my amplifier is reading 20.1 ohms subwoofer reads 4 ohms QUOTE=garychoffmann;8722224]The sub is reading 20 ohms? What exactly do you have and how do you have it wired. We can't help anything with "i have 20 ohms, I want 4"

 

[avs20 10+ year member]

Is it DVC? You can only achieve 8 ohms or 2 ohms with a DVC 4 ohm sub. How are you getting '20 ohms at the amp'? Where are you testing this?

 

[Jimjam72]

I'm at work and I tested it twic with a multimete

 

[avs20 10+ year member]

Was the amp powered on? How do you have it wired?

 

[Jimjam72]

Yes it was on ..I have it wire with 4 gauge power & ground wire into aftermarket radio unit w/ rca connected to west coast customs amplifier (1600 watt 4 channel) only one subwoofer connected ..but I took the subwoofer out and tested it separate and it read 4 ohms

 

[garychoffmann 10+ year member]

If that was while playing then thats is crazy box rise but possible. If you have a bad connection to the sub-sub to box-box to amp, can cause resistance

 

[LosIsATool 5,000+ posts]

Was it playing when you checked it? If so that's normal. It goes up depending on frequancy and other things.

It won't be 4 but for milliseconds at a time

 

[avs20 10+ year member]

Test the wires coming from the sub either with the amp off or with the wires disconnected from the amp. If the amp is on, playing, etc it will change the reading you're getting. As the sub moves, the ohm reading will change...so don't push on the cone or have it face down when testing.

 

[Jimjam72]

Ok but I have a bigger problem than that the amplifier go in protection mode at high volum with ganes at 50 head un loud is offalso I do not hav the sub bridge have it wired paralle

 

[hispls 5,000+ posts]

If that was while playing then thats is crazy box rise but possible. If you have a bad connection to the sub-sub to box-box to amp, can cause resistance

Was it playing when you checked it? If so that's normal. It goes up depending on frequancy and other things. It won't be 4 but for milliseconds at a time

Test the wires coming from the sub either with the amp off or with the wires disconnected from the amp. If the amp is on, playing, etc it will change the reading you're getting. As the sub moves, the ohm reading will change...so don't push on the cone or have it face down when testing.

Dear God, you CANNOT measure impedance with an ohmmeter with a sub playing nor with it connected to an amplifier. You people need to stop giving advice around here immediately.

OP. You really should seek professional installer. I won't touch this with a ten foot pole.

 

[LosIsATool 5,000+ posts]

Dear God, you CANNOT measure impedance with an ohmmeter with a sub playing nor with it connected to an amplifier. You people need to stop giving advice around here immediately.
OP. You really should seek professional installer. I won't touch this with a ten foot pole.

Um that's what most of us said...

 

[Jimjam72]

Could this problem with my amplifier going into protection mode be caused FROM miswiring at the head unit (wire harnes)

 

[avs20 10+ year member]

Dear God, you CANNOT measure impedance with an ohmmeter with a sub playing nor with it connected to an amplifier. You people need to stop giving advice around here immediately.
OP. You really should seek professional installer. I won't touch this with a ten foot pole.

You need to go back into the hole you came from..or learn to read.