Re: Speaker-Eating dashboard?
 

Smitty Two wrote:
> In article <igqc83hbo4bcs8h50hs1lhj4jrqumovaa6@4ax.com>,
> David <rickets@knac.com> wrote:
>
>> On Sat, 30 Jun 2007 09:58:52 GMT, Hachiroku ???? <Trueno@AE86.gts>
>> wrote:
>>
>>
>>> The speakers installed are capable of MORE than the rated wattage of the
>>> JVC Cd player (~22 Watts per channel, speakers are 50W or more)
>>> All the other speakers work great, including the Driver's side dash
>>> replaced in January as a set with the one that went bad a couple weeks ago.
>>>
>> You need more power. A good rule of thumb is that the amp should be
>> rated at 2 times the speaker rating. This prevents clipping which
>> speakers apaprt.
>
> you sure about that? it's true that distortion tears up speakers, and an
> underpowered amp can lead people to crank the volume up beyond clipping,
> but i've never heard it suggested that the amp be rated for more power
> than the speakers.


Have you ever listened to a *continuous* 22 watts, let alone 50? You
don't want to....

Driving a low-powered amp into clipping, yes. But clipping kills
tweeters first, then mids and eventually it *could* kill the woofers.

Overpowering a speaker usually kills the woofers first *IF* you can
stand the level and the racket of the woofer cones overextending and
having the coils hit the magnets.

High amounts of DC voltage usually "cooks" the coils.

Someone else's idea of putting in a "cheap as possible" speaker is a
start, but since the dead speaker's mate is a known good speaker, use
it instead. If it stays alive, you'll have to chalk this pair of
failures up to Murphy.

FWIW, I was a tech in a hi-end audio shop and we were known to do
intentional speaker-killing at times.. under "controlled conditions" you
know..

Re: Speaker-Eating dashboard?
 

On Sun, 01 Jul 2007 08:36:48 +1000, David Coggins wrote:

>
> "Hachiroku ????" <Trueno@AE86.gts> wrote in message
> news:wPphi.70$bh5.29@trndny01...
>> My Mazda 626 seems to have an appetite for speakers. I have replaced the
>> passenger's side front speaker for the third time a couple weeks ago,
>> and already it's buzzing like a bee is trapped in it.
>
> Any chance that the speaker mounting area could be distorted, which might
> be pulling the speaker frame out of alignment and causing the cone voice
> coil to rub on the magnet gap?? Maybe some old accident damage? Just a
> thought.
>
> Dave


You know, the car was in an accident at some point, but all the doors open
and close like they're supposed to, so I didn't think of it...

Re: Speaker-Eating dashboard?
 

On Sun, 01 Jul 2007 08:36:48 +1000, David Coggins wrote:

>
> "Hachiroku ????" <Trueno@AE86.gts> wrote in message
> news:wPphi.70$bh5.29@trndny01...
>> My Mazda 626 seems to have an appetite for speakers. I have replaced the
>> passenger's side front speaker for the third time a couple weeks ago,
>> and already it's buzzing like a bee is trapped in it.
>
> Any chance that the speaker mounting area could be distorted, which might
> be pulling the speaker frame out of alignment and causing the cone voice
> coil to rub on the magnet gap?? Maybe some old accident damage? Just a
> thought.
>
> Dave


You know, the car was in an accident at some point, but all the doors open
and close like they're supposed to, so I didn't think of it...

Re: Speaker-Eating dashboard?
 

On Sun, 01 Jul 2007 08:36:48 +1000, David Coggins wrote:

>
> "Hachiroku ????" <Trueno@AE86.gts> wrote in message
> news:wPphi.70$bh5.29@trndny01...
>> My Mazda 626 seems to have an appetite for speakers. I have replaced the
>> passenger's side front speaker for the third time a couple weeks ago,
>> and already it's buzzing like a bee is trapped in it.
>
> Any chance that the speaker mounting area could be distorted, which might
> be pulling the speaker frame out of alignment and causing the cone voice
> coil to rub on the magnet gap?? Maybe some old accident damage? Just a
> thought.
>
> Dave


You know, the car was in an accident at some point, but all the doors open
and close like they're supposed to, so I didn't think of it...

Re: Speaker-Eating dashboard?
 

On Sat, 30 Jun 2007 15:05:07 +0000, JoeSpareBedroom wrote:

> "Hachiroku ????" <Trueno@AE86.gts> wrote in message
> news:wPphi.70$bh5.29@trndny01...
>> My Mazda 626 seems to have an appetite for speakers. I have replaced the
>> passenger's side front speaker for the third time a couple weeks ago,
>> and already it's buzzing like a bee is trapped in it.
>>
>> The speakers installed are capable of MORE than the rated wattage of the
>> JVC Cd player (~22 Watts per channel, speakers are 50W or more) All the
>> other speakers work great, including the Driver's side dash replaced in
>> January as a set with the one that went bad a couple weeks ago.
>>
>> There aren't any leaks, there doesn't appear to be any 'stray magentism'
>> anywhere around, no obstructions or protrusions of any type into the
>> speaker area.
>>
>> I'm out of 'inexpensive' speakers (the last one that blew was a Clarion,
>> not the most expensive, but not a cheapo by any means...) Connections
>> are tight.
>>
>> Usually audio problems don't throw me, but this one has me stumped.
>>
>> Any ideas?
>>
>>
> What size are these speakers?


5"

Re: Speaker-Eating dashboard?
 

On Sat, 30 Jun 2007 15:05:07 +0000, JoeSpareBedroom wrote:

> "Hachiroku ????" <Trueno@AE86.gts> wrote in message
> news:wPphi.70$bh5.29@trndny01...
>> My Mazda 626 seems to have an appetite for speakers. I have replaced the
>> passenger's side front speaker for the third time a couple weeks ago,
>> and already it's buzzing like a bee is trapped in it.
>>
>> The speakers installed are capable of MORE than the rated wattage of the
>> JVC Cd player (~22 Watts per channel, speakers are 50W or more) All the
>> other speakers work great, including the Driver's side dash replaced in
>> January as a set with the one that went bad a couple weeks ago.
>>
>> There aren't any leaks, there doesn't appear to be any 'stray magentism'
>> anywhere around, no obstructions or protrusions of any type into the
>> speaker area.
>>
>> I'm out of 'inexpensive' speakers (the last one that blew was a Clarion,
>> not the most expensive, but not a cheapo by any means...) Connections
>> are tight.
>>
>> Usually audio problems don't throw me, but this one has me stumped.
>>
>> Any ideas?
>>
>>
> What size are these speakers?


5"

Re: Speaker-Eating dashboard?
 

On Sat, 30 Jun 2007 15:05:07 +0000, JoeSpareBedroom wrote:

> "Hachiroku ????" <Trueno@AE86.gts> wrote in message
> news:wPphi.70$bh5.29@trndny01...
>> My Mazda 626 seems to have an appetite for speakers. I have replaced the
>> passenger's side front speaker for the third time a couple weeks ago,
>> and already it's buzzing like a bee is trapped in it.
>>
>> The speakers installed are capable of MORE than the rated wattage of the
>> JVC Cd player (~22 Watts per channel, speakers are 50W or more) All the
>> other speakers work great, including the Driver's side dash replaced in
>> January as a set with the one that went bad a couple weeks ago.
>>
>> There aren't any leaks, there doesn't appear to be any 'stray magentism'
>> anywhere around, no obstructions or protrusions of any type into the
>> speaker area.
>>
>> I'm out of 'inexpensive' speakers (the last one that blew was a Clarion,
>> not the most expensive, but not a cheapo by any means...) Connections
>> are tight.
>>
>> Usually audio problems don't throw me, but this one has me stumped.
>>
>> Any ideas?
>>
>>
> What size are these speakers?


5"

Re: Speaker-Eating dashboard?
 

On Sat, 30 Jun 2007 18:40:58 -0700, nobody > wrote:

> Smitty Two wrote:
>> In article <igqc83hbo4bcs8h50hs1lhj4jrqumovaa6@4ax.com>,
>> David <rickets@knac.com> wrote:
>>
>>> On Sat, 30 Jun 2007 09:58:52 GMT, Hachiroku ???? <Trueno@AE86.gts>
>>> wrote:
>>>
>>>
>>>> The speakers installed are capable of MORE than the rated wattage of
>>>> the JVC Cd player (~22 Watts per channel, speakers are 50W or more)
>>>> All the other speakers work great, including the Driver's side dash
>>>> replaced in January as a set with the one that went bad a couple weeks
>>>> ago.
>>>>
>>> You need more power. A good rule of thumb is that the amp should be
>>> rated at 2 times the speaker rating. This prevents clipping which
>>> speakers apaprt.
>>
>> you sure about that? it's true that distortion tears up speakers, and an
>> underpowered amp can lead people to crank the volume up beyond clipping,
>> but i've never heard it suggested that the amp be rated for more power
>> than the speakers.
>
>
> Have you ever listened to a *continuous* 22 watts, let alone 50? You don't
> want to....

Shoot...have you ever listened to a continuous *ONE* watt?!?!
% watts true RMS is enough to drive you...OUT of the car!


>
> Driving a low-powered amp into clipping, yes. But clipping kills tweeters
> first, then mids and eventually it *could* kill the woofers.
>
> Overpowering a speaker usually kills the woofers first *IF* you can stand
> the level and the racket of the woofer cones overextending and having the
> coils hit the magnets.
>
> High amounts of DC voltage usually "cooks" the coils.
>
> Someone else's idea of putting in a "cheap as possible" speaker is a
> start, but since the dead speaker's mate is a known good speaker, use it
> instead. If it stays alive, you'll have to chalk this pair of failures up
> to Murphy.

This is my THIRD speaker in this position!


>
> FWIW, I was a tech in a hi-end audio shop and we were known to do
> intentional speaker-killing at times.. under "controlled conditions" you
> know..


Oh Boy! Where do I sign up!?!?!?!

I used to do testing for Underwriter's Laboratory certification at one
place where I worked. We made OEM power supplies; one of our products was
for a 'secret' project for IBM back in 1982...

At any rate, I would drip water into the power supplies, throw shorts into
various circuits, disable the safety circuits and THEN throw shorts into
the circuits, throw the switching section into overload, etc etc. I had
what looked like a motorcycle sheild in front of me to catch sparks and
capacitor spew...

Ah, how I long for the Good Ol' Days... ;)

Re: Speaker-Eating dashboard?
 

On Sat, 30 Jun 2007 18:40:58 -0700, nobody > wrote:

> Smitty Two wrote:
>> In article <igqc83hbo4bcs8h50hs1lhj4jrqumovaa6@4ax.com>,
>> David <rickets@knac.com> wrote:
>>
>>> On Sat, 30 Jun 2007 09:58:52 GMT, Hachiroku ???? <Trueno@AE86.gts>
>>> wrote:
>>>
>>>
>>>> The speakers installed are capable of MORE than the rated wattage of
>>>> the JVC Cd player (~22 Watts per channel, speakers are 50W or more)
>>>> All the other speakers work great, including the Driver's side dash
>>>> replaced in January as a set with the one that went bad a couple weeks
>>>> ago.
>>>>
>>> You need more power. A good rule of thumb is that the amp should be
>>> rated at 2 times the speaker rating. This prevents clipping which
>>> speakers apaprt.
>>
>> you sure about that? it's true that distortion tears up speakers, and an
>> underpowered amp can lead people to crank the volume up beyond clipping,
>> but i've never heard it suggested that the amp be rated for more power
>> than the speakers.
>
>
> Have you ever listened to a *continuous* 22 watts, let alone 50? You don't
> want to....

Shoot...have you ever listened to a continuous *ONE* watt?!?!
% watts true RMS is enough to drive you...OUT of the car!


>
> Driving a low-powered amp into clipping, yes. But clipping kills tweeters
> first, then mids and eventually it *could* kill the woofers.
>
> Overpowering a speaker usually kills the woofers first *IF* you can stand
> the level and the racket of the woofer cones overextending and having the
> coils hit the magnets.
>
> High amounts of DC voltage usually "cooks" the coils.
>
> Someone else's idea of putting in a "cheap as possible" speaker is a
> start, but since the dead speaker's mate is a known good speaker, use it
> instead. If it stays alive, you'll have to chalk this pair of failures up
> to Murphy.

This is my THIRD speaker in this position!


>
> FWIW, I was a tech in a hi-end audio shop and we were known to do
> intentional speaker-killing at times.. under "controlled conditions" you
> know..


Oh Boy! Where do I sign up!?!?!?!

I used to do testing for Underwriter's Laboratory certification at one
place where I worked. We made OEM power supplies; one of our products was
for a 'secret' project for IBM back in 1982...

At any rate, I would drip water into the power supplies, throw shorts into
various circuits, disable the safety circuits and THEN throw shorts into
the circuits, throw the switching section into overload, etc etc. I had
what looked like a motorcycle sheild in front of me to catch sparks and
capacitor spew...

Ah, how I long for the Good Ol' Days... ;)

Re: Speaker-Eating dashboard?
 

On Sat, 30 Jun 2007 18:40:58 -0700, nobody > wrote:

> Smitty Two wrote:
>> In article <igqc83hbo4bcs8h50hs1lhj4jrqumovaa6@4ax.com>,
>> David <rickets@knac.com> wrote:
>>
>>> On Sat, 30 Jun 2007 09:58:52 GMT, Hachiroku ???? <Trueno@AE86.gts>
>>> wrote:
>>>
>>>
>>>> The speakers installed are capable of MORE than the rated wattage of
>>>> the JVC Cd player (~22 Watts per channel, speakers are 50W or more)
>>>> All the other speakers work great, including the Driver's side dash
>>>> replaced in January as a set with the one that went bad a couple weeks
>>>> ago.
>>>>
>>> You need more power. A good rule of thumb is that the amp should be
>>> rated at 2 times the speaker rating. This prevents clipping which
>>> speakers apaprt.
>>
>> you sure about that? it's true that distortion tears up speakers, and an
>> underpowered amp can lead people to crank the volume up beyond clipping,
>> but i've never heard it suggested that the amp be rated for more power
>> than the speakers.
>
>
> Have you ever listened to a *continuous* 22 watts, let alone 50? You don't
> want to....

Shoot...have you ever listened to a continuous *ONE* watt?!?!
% watts true RMS is enough to drive you...OUT of the car!


>
> Driving a low-powered amp into clipping, yes. But clipping kills tweeters
> first, then mids and eventually it *could* kill the woofers.
>
> Overpowering a speaker usually kills the woofers first *IF* you can stand
> the level and the racket of the woofer cones overextending and having the
> coils hit the magnets.
>
> High amounts of DC voltage usually "cooks" the coils.
>
> Someone else's idea of putting in a "cheap as possible" speaker is a
> start, but since the dead speaker's mate is a known good speaker, use it
> instead. If it stays alive, you'll have to chalk this pair of failures up
> to Murphy.

This is my THIRD speaker in this position!


>
> FWIW, I was a tech in a hi-end audio shop and we were known to do
> intentional speaker-killing at times.. under "controlled conditions" you
> know..


Oh Boy! Where do I sign up!?!?!?!

I used to do testing for Underwriter's Laboratory certification at one
place where I worked. We made OEM power supplies; one of our products was
for a 'secret' project for IBM back in 1982...

At any rate, I would drip water into the power supplies, throw shorts into
various circuits, disable the safety circuits and THEN throw shorts into
the circuits, throw the switching section into overload, etc etc. I had
what looked like a motorcycle sheild in front of me to catch sparks and
capacitor spew...

Ah, how I long for the Good Ol' Days... ;)

Re: Speaker-Eating dashboard?
 

On Sat, 30 Jun 2007 04:25:25 -0700, larry moe 'n curly wrote:

> Have you tried pressing the speaker cone to see that it moves in and out
> without binding?


The last one I pulled worked flawlessly!

I'll try the meter thing, but I'm also on my second head unit. I upgraded
the one in the Supra and pulled that one for this car.

Re: Speaker-Eating dashboard?
 

On Sat, 30 Jun 2007 04:25:25 -0700, larry moe 'n curly wrote:

> Have you tried pressing the speaker cone to see that it moves in and out
> without binding?


The last one I pulled worked flawlessly!

I'll try the meter thing, but I'm also on my second head unit. I upgraded
the one in the Supra and pulled that one for this car.

Re: Speaker-Eating dashboard?
 

On Sat, 30 Jun 2007 04:25:25 -0700, larry moe 'n curly wrote:

> Have you tried pressing the speaker cone to see that it moves in and out
> without binding?


The last one I pulled worked flawlessly!

I'll try the meter thing, but I'm also on my second head unit. I upgraded
the one in the Supra and pulled that one for this car.

Re: Speaker-Eating dashboard?
 

On Sat, 30 Jun 2007 10:20:54 +0000, Art wrote:

> Find a cheap speaker, hook if up electrically but don't install it
> physically. Just extend the wires and leave it somewhere in the car to
> figure out whether it is related to the physical installation or a short
> from the radio.

All good suggestions!


>
>
> "Hachiroku ????" <Trueno@AE86.gts> wrote in message
> news:wPphi.70$bh5.29@trndny01...
>> My Mazda 626 seems to have an appetite for speakers. I have replaced the
>> passenger's side front speaker for the third time a couple weeks ago,
>> and already it's buzzing like a bee is trapped in it.
>>
>> The speakers installed are capable of MORE than the rated wattage of the
>> JVC Cd player (~22 Watts per channel, speakers are 50W or more) All the
>> other speakers work great, including the Driver's side dash replaced in
>> January as a set with the one that went bad a couple weeks ago.
>>
>> There aren't any leaks, there doesn't appear to be any 'stray magentism'
>> anywhere around, no obstructions or protrusions of any type into the
>> speaker area.
>>
>> I'm out of 'inexpensive' speakers (the last one that blew was a Clarion,
>> not the most expensive, but not a cheapo by any means...) Connections
>> are tight.
>>
>> Usually audio problems don't throw me, but this one has me stumped.
>>
>> Any ideas?
>>
>>

Re: Speaker-Eating dashboard?
 

On Sat, 30 Jun 2007 10:20:54 +0000, Art wrote:

> Find a cheap speaker, hook if up electrically but don't install it
> physically. Just extend the wires and leave it somewhere in the car to
> figure out whether it is related to the physical installation or a short
> from the radio.

All good suggestions!


>
>
> "Hachiroku ????" <Trueno@AE86.gts> wrote in message
> news:wPphi.70$bh5.29@trndny01...
>> My Mazda 626 seems to have an appetite for speakers. I have replaced the
>> passenger's side front speaker for the third time a couple weeks ago,
>> and already it's buzzing like a bee is trapped in it.
>>
>> The speakers installed are capable of MORE than the rated wattage of the
>> JVC Cd player (~22 Watts per channel, speakers are 50W or more) All the
>> other speakers work great, including the Driver's side dash replaced in
>> January as a set with the one that went bad a couple weeks ago.
>>
>> There aren't any leaks, there doesn't appear to be any 'stray magentism'
>> anywhere around, no obstructions or protrusions of any type into the
>> speaker area.
>>
>> I'm out of 'inexpensive' speakers (the last one that blew was a Clarion,
>> not the most expensive, but not a cheapo by any means...) Connections
>> are tight.
>>
>> Usually audio problems don't throw me, but this one has me stumped.
>>
>> Any ideas?
>>
>>