SAD I Dun Mes'd Up!

by Ash
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You know, being here in the south can have it's advantages as well as disadvantages.

Being used to scorching heat and very mild winters does not prepare you for the precautions most northern states take. During the last surprise cold snap (close to freezing!) a few days ago, I was headed to work. I normally enjoy my morning music as I start waking up on the 4:00 a.m. trek. (Dont' worry, theres no houses on my route to disturb). Without thinking, I reached for the volume about past halfway and heard a dreadfully familiar sound. You know it! Fried the sucker! Forgot to give it time to warm up and now it's toast!


Well, for now I'll have to get the 8"s out of storage. I can't ride like this! Hopefully Dayton will honor the 5 year warranty even though I should have known better. If not, oh well... I'll just have to chart it up as a lesson learned. THINK


Replies (9)
ShootuhMcBustaCap on 12/10/2006 20:59:34
Thats too bad. The same thing happened to my sub. At least you got spare subs and a warranty, I wasn't so lucky man. I live in Colorado, I should've known better.....

swez on 12/10/2006 21:47:11
Hummmm, looks like you'll get a good opportunity to see how well PE stands behind their products and warranty programs.

Seems a bit strange that a sub would fail just because of near freezing temps. I live in MI and it's very chilly here at night the past week or so. when I had my subs in the last vehicle, never had a problem with them, even at well below freezing temps. (Typically very low humidity and single digit temps are common here in late Dec, Jan and early part of Feb)

Since you live close to the Gulf, wondering if sea air, (High Salinity) has any negative affects on the motor system of a given sub?

Good luck on your dealings with PE,
Swez


cplkittle on 12/10/2006 22:38:10
I wonder if it is a combination of the effects of cold weather on electronics (increased conductivity in the coils, increased capacitance within the amp, basically an overall spike in output) in addition to the brittleness of the subs.

ShootuhMcBustaCap on 12/11/2006 01:56:02
If it's moist enough, and your not using a sealed box, this is a fairly common problem in Colo. My homie went out to his ride a wek ago and his whole amp and enclosure was covered in frost. Same freind is my homie that works at Ultimate, he says this the number two killer of speakers in our area, second to underpowered subs.

newB on 12/12/2006 02:30:45
im curious how an underpowered sub can fry, given its clean power.
please elaborate.
-Drew

cplkittle on 12/12/2006 02:53:15
underpowered subs fry because the sub relies on proper excursion to move air over the voice coils to cool them. If a sub is not given enough power it does not move enough, and heat builds up in the coils. Then you get that uh oh smell.
The coils either warp and the sub freezes, or they burn off the insulation on the coils and short out. This is why amplifiers have a protection cut off circuit.

swez on 12/12/2006 09:26:26
Underpowering a sub with clean signals are not a problem. A sub can operate fine for years with 10 watts of "CLEAN POWER" for years.

The main problem is when we push an amp well into "clipping mode" and it's constantly delivering lots of square wave energy (Almost DC voltage) to the sub coil. This heats up the coil a lot and eventually will cause all but the most hearty subs to fail.

Why? Square waves do not allow the cone to move properly to cool itself. This lack of proper cone motivation is what causes the sub to fail. The sub cannot cool itself adequately and often leads to premature failure.

Swez

cplkittle on 12/12/2006 15:32:36
duh, that is what I was trying to say
except I left out the important part GRIN
oops
thanks Swez

Ash on 12/13/2006 15:38:19
Well, anyway I'll probably put it up for sale after the refurb/replace. My ears are not getting any younger and the space taken up was quite a pain on trips.

The eights don't sound too bad if tuned to at least 40hz, but @ 1 foot each to do it somehow sours it. I'm still looking to get into to some kind of stealthy install. Even thought about doing a single vented Dayton eight. Maybe one tuned into the mid 30's would make for some good up front bass, huh? Easy on the electrics as well. I built one for a buddy's S10 Blazer. Listens to old R&B, Jazz, some modern, etc... He loves the crap out of it. I only took enough time to set it up. Never really got to audition it with my music.

The one sub I had my eyes on (Dayton HO 10") was out of my reach even when it was on sale Qtc = .707 in a .4cft with a F3 in the low 50's just seems so doable.

I just got way too much equipment laying around and I got to get rid of them to justify. The lil woman frowns everytime something arrives. Maybe after all the holiday spending is done and I sell some stuff..... who knows.

Not to mention, I still want to try the Goldwoods or Dayton reference series infinite baffled into the doors. Dang blasted hobby! Gotta luv it!




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