What does "blown spearker" mean?

[micky]

I've been reading about a car like mine and the owner says that the rear
subwoofer is "blown". I always took that to refer to an electrical
open. Does that ever happen?

But does it also refer to a torn surround?

 

On Tuesday, September 19, 2017 at 9:19:37 PM UTC-4, micky wrote:

I've been reading about a car like mine and the owner says that the rear
subwoofer is "blown". I always took that to refer to an electrical
open. Does that ever happen?

But does it also refer to a torn surround?

Typically a "blown" speaker can mean that either the voice coil is open or that the surround is torn which will result in distorted sound. Either can be fixed, it is just a matter of how much the cost will be. If the surround is torn, it can be easily replaced. While the coil can also be replaced, it is a much more involved task that requires some finesse. These days, consumer speakers found in cars are usually replaced rather than repaired as that option is cheaper.

Dan

 

[Phil Allison]

micky wrote:

I've been reading about a car like mine and the owner says that the rear
subwoofer is "blown".

** Blown = destroyed.

I always took that to refer to an electrical
open. Does that ever happen?

But does it also refer to a torn surround?

** There are many way a speaker can be damaged and rendered useless.

http://sound.whsites.net/articles/speaker-failure.html#s5


..... Phil

 

[John-Del]

On Tuesday, September 19, 2017 at 9:19:37 PM UTC-4, micky wrote:

I've been reading about a car like mine and the owner says that the rear
subwoofer is "blown". I always took that to refer to an electrical
open. Does that ever happen?

But does it also refer to a torn surround?

Any kind of failure falls under the description of "blown".

Open, intermittent, shorted, or melted/shifted voice coil or weak or damaged surrounds all fit that description.

"Blown" has become a catch-all for *any* kind of failure, even medical: "I blew my back out swing a bat. I won't be able to play for several days"..

 

[micky]

In sci.electronics.repair, on Tue, 19 Sep 2017 19:07:01 -0700 (PDT),
John-Del <ohger1s@gmail.com> wrote:

On Tuesday, September 19, 2017 at 9:19:37 PM UTC-4, micky wrote:
I've been reading about a car like mine and the owner says that the rear
subwoofer is "blown". I always took that to refer to an electrical
open. Does that ever happen?

But does it also refer to a torn surround?

Any kind of failure falls under the description of "blown".

Open, intermittent, shorted, or melted/shifted voice coil or weak or damaged surrounds all fit that description.

"Blown" has become a catch-all for *any* kind of failure, even medical: "I blew my back out swing a bat. I won't be able to play for several days"..

Thanks, you, dan, and phil. I guess I have to update my view of the
word.

I can't remember if I got back to you about this:

Toyota Solara convertible, when they were still made, used a woofer
behind the front seat. The paper surround had fallen apart and after
discussing it here, I replaced it with one from SimplySpeakers. It was
very easy. Their instructions don't require centering the cone, except
iirc by pushing it down and up, or up and down, once.

And the glue they provided was very good. Like Duco Cement from the
60's but better.

So the speaker goes in and works fine, but now there is too much bass. I
turned down the bass, but I could still hear it even during talk shows
like Terry Gross and the news. Other things broke and I got a new car
but I think the reason mine had had one of the voice coil wires cut was
to cut down the bass, and when that wasn't enough they unplugged the
whole thing. I repaired the cut wire and now I sort of regret that!

 

[micky]

In sci.electronics.repair, on Tue, 19 Sep 2017 23:23:20 -0400, micky
<NONONOmisc07@bigfoot.com> wrote:

Toyota Solara convertible, when they were still made, used a woofer
behind the front seat.

I mean behind the rear seat. I didn't even know it was there until I
took the seat back out for some other reason.

 

[Jeff Liebermann]

On Tue, 19 Sep 2017 21:19:29 -0400, micky <NONONOmisc07@bigfoot.com>
wrote:

I've been reading about a car like mine and the owner says that the rear
subwoofer is "blown". I always took that to refer to an electrical
open. Does that ever happen?

Please check that it didn't say "blown away" which is something quite
different.

>But does it also refer to a torn surround?

Torn surround, surroundings, or both?
<http://main.iosmars.com/wp-content/uploads/2014/10/image1.jpg>


--
Jeff Liebermann jeffl@cruzio.com
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558

 

On Wednesday, 20 September 2017 02:19:37 UTC+1, micky wrote:

I've been reading about a car like mine and the owner says that the rear
subwoofer is "blown". I always took that to refer to an electrical
open. Does that ever happen?

But does it also refer to a torn surround?

Melted o/c voice coil is the usual outcome of gross overload.


NT

 

[Gareth Magennis]

"micky" wrote in message news:1dg3scp9mp6sq42mafmeeebfbsqd5f0qcp@4ax.com...

I've been reading about a car like mine and the owner says that the rear
subwoofer is "blown". I always took that to refer to an electrical
open. Does that ever happen?


****************************************


Yes it does.


I have come across many a speaker that has failed open circuit, but with no
obvious burning of the voice coil, or damage to braids etc.

I can only conclude this is down to poor manufacturing.



Gareth.

 

[John-Del]

On Wednesday, September 20, 2017 at 5:47:47 PM UTC-4, Gareth Magennis wrote:

"micky" wrote in message news:1dg3scp9mp6sq42mafmeeebfbsqd5f0qcp@4ax.com...

I've been reading about a car like mine and the owner says that the rear
subwoofer is "blown". I always took that to refer to an electrical
open. Does that ever happen?


****************************************


Yes it does.


I have come across many a speaker that has failed open circuit, but with no
obvious burning of the voice coil, or damage to braids etc.

I can only conclude this is down to poor manufacturing.



Gareth.

Once in a while you can get lucky and find the open at the junction where the braid meets the VC feed wire right on the cone. Careful picking at (or solvent dissolving) the blob can expose the gimpy soldered connection.