can this blow my Mags??

[t-money 10+ year member]

i have two Mag 15's in a sealed box and i have a extra battery in the trunk in its own box. A month or so ago i was driving and my bass cut out. I finally came to a stop and realized that the battery box was pressed up agains my terminal cup of the woofer box and was shorting out the connection. I moved the battery box from the terminal cup and everything was great. A couple days ago i was playiing system loud and everything was o.k. When i woke up in the morning and started to drive the bass sounded funny and cut out again. I see again the battery box is up against the terminal cup, this time when i move it the bass didn't come back on. I wiggled the positive push terminal and i got bass but it didn't sound proper. I then opened the trunk and can see both subs playing but they sound weird(hard to describe). I took the box out of my car and hopefully later today i can measure the vc's resistance. Could the terminal cup shorting out on the positive terminal put a bad signal to my subs and blow the vc's? I was thinking that the terminal cup is no good and making my subs sound funny.Could it be the vc's or is it the terminal? thanks in advance for any help

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[CJW 10+ year member]

Is your battery box not secured or what?

That's pretty freaking dangerous man...

Anyway, take a dmm to the coils to see if they are ok. Check the wiring on the inside make sure its all still good and attached. Check it at the amp. Keep checking connections until you run out of options

 

[t-money 10+ year member]

Is your battery box not secured or what?
That's pretty freaking dangerous man...

Anyway, take a dmm to the coils to see if they are ok. Check the wiring on the inside make sure its all still good and attached. Check it at the amp. Keep checking connections until you run out of options

i had the box bolted down but it came loose. When i look on the inside of the terminal cup, the positive terminal looks like it melted a little bit of plastic around it. I will measure the vc's later today but just wondering if what happened could damage a vc. The still play and very loud at that, but they don't sound right. Wiring at the amp is o.k.If i blew a vc wouldn't they just be a litlle quieter but sound o.k?

 

[CJW 10+ year member]

nah if you blow one of the voicecoils it will sound drastically different. It will change all of the t/s parameters.

I suppose what happened could damage the coils...I've never seen something like that happen though so I really can't speak from experiance

 

[t-money 10+ year member]

nah if you blow one of the voicecoils it will sound drastically different. It will change all of the t/s parameters.
I suppose what happened could damage the coils...I've never seen something like that happen though so I really can't speak from experiance

i've never heard of what heppened to me damaging a speaker either and thats why i asked. I hope the terminal cup is not working proper cause i really don't want to ship the subs back since i live in Canada that would be a pain. I took the subs out of the box and they look fine but i know looks don't mean everything. I hate not knowing whats wrong and i can't do anything till later since i'm at work

 

[t-money 10+ year member]

i measured each voice coil and the meter kept going from 2 to 3 ohms on each coil, using a cheap multimeter, then i wired them series than parrallel to the terminal cup and it read 2 to 3 ohms. So i guess the problem is with the terminal cup. Since my subs are dual 2 ohm the readings i got are o.k right?

 

[Electrodynamic 10+ year member]

Depending on the DMM, it should read around 1.9 Ohms per coil on our Mag's.

 

[audioholic 5,000+ posts]

You had it bolted down, but it came loose? Twice? Either you obviously had it bolted down VERY poorly, or you are BS'ing us. Bolts dont just come loose.

Which leads me to the question, what were you thinking? Somehow your batt and speaker terminals are at the exact height to be able to touch, and even after having done it once, you STILL didnt properly mount the batt. Come one man, that's dangerous. Not just for your equipment, for you.

Not trying to bust your balls, but hopefully you've learned a lesson this time. Swap out the terminal cup and get that battery mounted down right.

Cheers.

 

[t-money 10+ year member]

well i don't have much tools, so i have to get my friend to bolt it back down for me(it's still not bolted down), but its not as dangerous as it seems if you see how its installed. I was able to actually fix the terminal cup and everything is o.k now. I was also using a cheap dmm that didn't even go into decimals. thanks for any help