AAAAAAA

iTrader: (7)

So I sold some subs in a box to a local guy. I had just removed them from my car after using them a few weeks.

He went to a shop to have all the stuff he had gathered installed.

So he told me they put the dmm on em before installing them and got 3.xx ohms for one pair and 8ish for the other.

The subs are dual 2 ohm RF 15 P2's that I had wired to 4ohm individually (the box had to terminal cups)

They installed it onto a MTX JH1200
Power Output: 400 Watts RMS x 1 Channel at 4 Ohms =1% THD+N
Power Output: 800 Watts RMS x 1 Channel at 2 Ohms = 1% THD+N
Power Output: 1200 Watts RMS x 1 Channel at 1 Ohmns and 1% THD+N

He said they wired it up and they worked for a few minutes and then apparently there was beeping coming from the amp and the subs. And then one of the subs just came out as much as it could and smoked. Apparently the other one no longer works as well.

Everything sounds really strange. What do you guys think happened?

Poor guy spent a lot for the install, I don't want to leave him hanging but I really can't rap my mind around what happened.

Does it seem more like the subs just gave in.... someone tried to push the amp to much not wiring it correctly?

Father Yuli

iTrader: (17)

sounds like the shop wired it wrong.

csemoses

ya, that sounds like someone wired something incorrect. I'm a total newb, but that's not supposed to happen. ... and i dont think that would happen if a sub went **** up either.

AAAAAAA

iTrader: (7)

But how can it be wired wrong? The amp supports 1ohm bridged. I had wired it so it was dual 4..... that makes it so they could either wire it at 2 or 8ohms. Maybe they had it at 8 and clipped it to death? That's all I can think of.

csemoses

maybe they changed something man. Simple.
Didnt they take the subs out of the box?

Tubeamp

Honestly, it might be all of the above. Can you get the vehicle in to look at how everything is wired?

BigRedGuy

iTrader: (11)

Weird numbers on those coils.... Is it possible one of them was a D4?.....

Still doesn't explain how it all smoked so fast tho......

If I was getting that much of a difference at the terminals I would be pulling the drivers to test each coil individually.....

Gee, that was a lot of help wasn't it?.....

Post it back if you ever get an answer.

jalat

iTrader: (6)

this makes no sense. the subs should have read 4 ohms each, if you were to have wired them correctly... i dont get how they were readin 3 and 8 ohms

that should have been his first sign to come back to you and say, 'hey look, something is wrong here.'

on the flip side, i'm going to have to blame whoever installed them, as they should have stop right when they metered the subs and said, 'something is wrong here'

csemoses

[/QUOTE]
on the flip side, i'm going to have to blame whoever installed them, as they should have stop right when they metered the subs and said, 'something is wrong here'[/QUOTE]

I agree 100% here.

It's not like he said "hey, they hooked em up and we ran em for a minute and they blew"
he said " the tech metered them, the readings were way off, we tried em, and they blew" ... uhh....

lol, omfg, the buyer and that shop are both at fault (assuming the buyer was present for the metering).

kimtek

ALWAYS ALWAYS ALWAYS meter your finished load and make sure the amp in question can take what you end up with.

NUFF SAID.

P.S Subwoofers that have had the crap beat out of them can measure all sorts of diff. Ohm values....As in they were not right if they measure that diff. values*

I truly think some blame goes to all in question.

I Don't install any subwoofers without metering all coils first. Old OR new. Then at the end after however you're configuring them. At least you know you have a good starting point.

ELEMENTARY DR. WATSON...