Mineral deposits on sub - > Should I Care?
10-19-2004, 06:37 PM
#1
0 Watt CAFz'r
Thread Starter
Join Date: Aug 2002
Posts: 31
Hey folks,
The 12W6v2 I am looking to buy has some white powdery mineral deposits on the magnet only. It doesn’t really rub off using my hand.
What could cause this? One theory that has been purposed is that since the sub is in a ported box, it is condensation from the winter air? I thought condensation occurred when the surrounding air is humid and comes into contact with a cold surface, thus “condensing” the water molecules into liquid again. Maybe it occurred from humid summer air coming into contact with a cold magnet.
Anyways, has anyone seen this b4? Should I be concerned about this affecting the sub in any way? Or be concerned that it was in an environment that caused this in the first place?
Thanks in advance folks.
The 12W6v2 I am looking to buy has some white powdery mineral deposits on the magnet only. It doesn’t really rub off using my hand.
What could cause this? One theory that has been purposed is that since the sub is in a ported box, it is condensation from the winter air? I thought condensation occurred when the surrounding air is humid and comes into contact with a cold surface, thus “condensing” the water molecules into liquid again. Maybe it occurred from humid summer air coming into contact with a cold magnet.
Anyways, has anyone seen this b4? Should I be concerned about this affecting the sub in any way? Or be concerned that it was in an environment that caused this in the first place?
Thanks in advance folks.
10-20-2004, 10:41 AM
#5
^ yes it can.. I've seen it... however, this isn't corrosion... (how is a stainless steel backplate going to corrode ?)
what you see is a result of SO3 and other nasty stuff dissolved in the airs mosture, which has condensed on the sub, and re-evaporated leaving these depostits...
If the cone still moves freely, you are probably OK...
FYI humidity is relative.. you don't need alot of mosture in the air to produced condensation.. only cool temperatures... ect...
what you see is a result of SO3 and other nasty stuff dissolved in the airs mosture, which has condensed on the sub, and re-evaporated leaving these depostits...
If the cone still moves freely, you are probably OK...
FYI humidity is relative.. you don't need alot of mosture in the air to produced condensation.. only cool temperatures... ect...
10-20-2004, 01:39 PM
#7
Yea.. OK, I ment corrosion like rust... lol...
In this case the metal has been oxidized by sulfuric acid.. (SO3 in water)
Id call my local coal firing power plant and bitch just to see what they say... threaten civil action if they don't replace your sub.. [img]graemlins/laugh.gif[/img]
In this case the metal has been oxidized by sulfuric acid.. (SO3 in water)
Id call my local coal firing power plant and bitch just to see what they say... threaten civil action if they don't replace your sub.. [img]graemlins/laugh.gif[/img]
10-21-2004, 12:25 AM
#9
yea, I just didnt want anyone to think rust... I figured the next question would be how the heck a copper wire VC could rust...
Guess I didn't save any confusion... lol..
So, its corrosion, and yes, it can damage the inside of the motor.. !
(although itd probably have to be an extreme case to do damage- I've it happen to prosound drivers)
[ October 21, 2004, 01:36 AM: Message edited by: Haunz ]
Guess I didn't save any confusion... lol..
So, its corrosion, and yes, it can damage the inside of the motor.. !
(although itd probably have to be an extreme case to do damage- I've it happen to prosound drivers)
[ October 21, 2004, 01:36 AM: Message edited by: Haunz ]
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