Negative Ohms Reading On Speakers?

[walkychalky 10+ year member]

i have some boston pro comps in my front and some mb quart comps inthe rear. my amp has been going into protect lately and i thought it was the amp but i switched it out n still have the same problem. i check the ohm loads with a dmm and for the front comps it reads between 2 and 3 ohms and the rear speakers get like a negative 10 ohms....are they blown or is something hooked up wrong? i didnt even know ohms could be negative. any help is appreciated....

P.S. when the speakers actually do play (they play for a lil b4 the amp goes into protect) they sound fine n i dont hear any distortion

Click to read more...

 

[mokedaddy 5,000+ posts]

Ohms arent negative. You have the positive and negative lead backwards. Did you zero out your leads before taking readings?

 

[walkychalky 10+ year member]

Ohms arent negative. You have the positive and negative lead backwards. Did you zero out your leads before taking readings?

what do u mean by zero out my leads?

 

[Innovative:Cory 10+ year member]

Doesn't matter if you test with the leads backwards on impedence....resistance is resistance

 

[jco1385 5,000+ posts]

there is no negative resistance... think about it

 

[Innovative:Cory 10+ year member]

are you taking measurements with the stereo playing? what kind of dmm are you using? is the battery fresh?

 

[Buck 5,000+ posts]

Ohms arent negative. You have the positive and negative lead backwards. Did you zero out your leads before taking readings?

I don't think that matters, because it still reads the same. Whether switched up or not.

 

[walkychalky 10+ year member]

there is no negative resistance... think about it

yah i realize it makes no sense...which is why i am baffled at the reading...

 

[mokedaddy 5,000+ posts]

what do u mean by zero out my leads?

Touch them together until they read at or about 0ohms.

Doesn't matter if you test with the leads backwards on impedence....resistance is resistance

Obviously that is a given. He was asking why it was reading negative.

 

[walkychalky 10+ year member]

are you taking measurements with the stereo playing? what kind of dmm are you using? is the battery fresh?

i think the stereo was on actually...i jus retested with it off and i got a reading of ~3.5 on each speaker....dumb mistake....i didnt know the stereo had to be off...my bad

however, my amp is still going into protect.....could my rcas be bad? is there a way to test them?

 

[walkychalky 10+ year member]

anyone? //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[jco1385 5,000+ posts]

check grounds.

 

[grimreper912003 5,000+ posts]

check grounds.

x2 or check wires for the speakers and make sure they arnt touching.

 

[walkychalky 10+ year member]

my grounds look good....i have my 20.1 running off the same neg batt post n have no problems whatsoever.....speaker wires are not touching either.....this is sooooo frustrating :/

 

[jco1385 5,000+ posts]

voltage at protected amp? RCAs shouldnt put an amp into protect, unless the volts are too high.

DMM the RCAs with the radio on and see what you get