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  #1   Report Post  
TUBELOVER
 
Posts: n/a
Default JBL LE 14C speakers

i would like to correspond by email or phone with someone knowlegeable
about these speakers, as i have acquired a pair but have some questions.

Ron email
rg
  #2   Report Post  
Peter Larsen
 
Posts: n/a
Default JBL LE 14C speakers

TUBELOVER wrote:

i would like to correspond by email or phone with someone knowlegeable
about these speakers, as i have acquired a pair but have some questions.


Ask in the newsgroup you're in. Don't expect people to want to type for
you only.

Ron email
rg


--
*******************************************
* My site is at:
http://www.muyiovatki.dk *
*******************************************
  #3   Report Post  
Peter Larsen
 
Posts: n/a
Default JBL LE 14C speakers

TUBELOVER wrote:

i would like to correspond by email or phone with someone knowlegeable
about these speakers, as i have acquired a pair but have some questions.


Ask in the newsgroup you're in. Don't expect people to want to type for
you only.

Ron email
rg


--
*******************************************
* My site is at:
http://www.muyiovatki.dk *
*******************************************
  #4   Report Post  
Peter Larsen
 
Posts: n/a
Default JBL LE 14C speakers

TUBELOVER wrote:

i would like to correspond by email or phone with someone knowlegeable
about these speakers, as i have acquired a pair but have some questions.


Ask in the newsgroup you're in. Don't expect people to want to type for
you only.

Ron email
rg


--
*******************************************
* My site is at:
http://www.muyiovatki.dk *
*******************************************
  #5   Report Post  
Peter Larsen
 
Posts: n/a
Default JBL LE 14C speakers

TUBELOVER wrote:

i would like to correspond by email or phone with someone knowlegeable
about these speakers, as i have acquired a pair but have some questions.


Ask in the newsgroup you're in. Don't expect people to want to type for
you only.

Ron email
rg


--
*******************************************
* My site is at:
http://www.muyiovatki.dk *
*******************************************


  #6   Report Post  
Tony Pearce
 
Posts: n/a
Default JBL LE 14C speakers


"TUBELOVER" wrote in message
...
i would like to correspond by email or phone with someone knowlegeable
about these speakers, as i have acquired a pair but have some questions.


What do you need to know?
Similar to the LE14A with 2" coaxial tweeter.
Rated Power 35W continuous
Nominal Impedance 8 ohms
Crossover 2kHz (LX2-1)
Efficiency 80 dB @1W,15ft.

Suggested enclosure 4 cu ft ported (can be used in a 2cu ft enclosure as per
the Lancer 55, which is the same except the tweeter is not coaxial, ie LE14A
and LE20 tweeter)

TonyP.



  #7   Report Post  
Tony Pearce
 
Posts: n/a
Default JBL LE 14C speakers


"TUBELOVER" wrote in message
...
i would like to correspond by email or phone with someone knowlegeable
about these speakers, as i have acquired a pair but have some questions.


What do you need to know?
Similar to the LE14A with 2" coaxial tweeter.
Rated Power 35W continuous
Nominal Impedance 8 ohms
Crossover 2kHz (LX2-1)
Efficiency 80 dB @1W,15ft.

Suggested enclosure 4 cu ft ported (can be used in a 2cu ft enclosure as per
the Lancer 55, which is the same except the tweeter is not coaxial, ie LE14A
and LE20 tweeter)

TonyP.



  #8   Report Post  
Tony Pearce
 
Posts: n/a
Default JBL LE 14C speakers


"TUBELOVER" wrote in message
...
i would like to correspond by email or phone with someone knowlegeable
about these speakers, as i have acquired a pair but have some questions.


What do you need to know?
Similar to the LE14A with 2" coaxial tweeter.
Rated Power 35W continuous
Nominal Impedance 8 ohms
Crossover 2kHz (LX2-1)
Efficiency 80 dB @1W,15ft.

Suggested enclosure 4 cu ft ported (can be used in a 2cu ft enclosure as per
the Lancer 55, which is the same except the tweeter is not coaxial, ie LE14A
and LE20 tweeter)

TonyP.



  #9   Report Post  
Tony Pearce
 
Posts: n/a
Default JBL LE 14C speakers


"TUBELOVER" wrote in message
...
i would like to correspond by email or phone with someone knowlegeable
about these speakers, as i have acquired a pair but have some questions.


What do you need to know?
Similar to the LE14A with 2" coaxial tweeter.
Rated Power 35W continuous
Nominal Impedance 8 ohms
Crossover 2kHz (LX2-1)
Efficiency 80 dB @1W,15ft.

Suggested enclosure 4 cu ft ported (can be used in a 2cu ft enclosure as per
the Lancer 55, which is the same except the tweeter is not coaxial, ie LE14A
and LE20 tweeter)

TonyP.



  #10   Report Post  
TUBELOVER
 
Posts: n/a
Default JBL LE 14C speakers

the speakers cones look like new, they are an light tan color with a peeble
finish.
what i dont understand is the stiffness of the cone suspension. the cone will
barely move in and out with a significant force on the cones. is this normal?
rg


  #11   Report Post  
TUBELOVER
 
Posts: n/a
Default JBL LE 14C speakers

the speakers cones look like new, they are an light tan color with a peeble
finish.
what i dont understand is the stiffness of the cone suspension. the cone will
barely move in and out with a significant force on the cones. is this normal?
rg
  #12   Report Post  
TUBELOVER
 
Posts: n/a
Default JBL LE 14C speakers

the speakers cones look like new, they are an light tan color with a peeble
finish.
what i dont understand is the stiffness of the cone suspension. the cone will
barely move in and out with a significant force on the cones. is this normal?
rg
  #13   Report Post  
TUBELOVER
 
Posts: n/a
Default JBL LE 14C speakers

the speakers cones look like new, they are an light tan color with a peeble
finish.
what i dont understand is the stiffness of the cone suspension. the cone will
barely move in and out with a significant force on the cones. is this normal?
rg
  #14   Report Post  
Peter Larsen
 
Posts: n/a
Default JBL LE 14C speakers

TUBELOVER wrote:

the speakers cones look like new, they are an light tan color with a peeble
finish.


what i dont understand is the stiffness of the cone suspension. the cone will
barely move in and out with a significant force on the cones. is this normal?


"significant force" ... what color is the front suspension, black?

rg


--
*******************************************
* My site is at: http://www.muyiovatki.dk *
*******************************************
  #15   Report Post  
Peter Larsen
 
Posts: n/a
Default JBL LE 14C speakers

TUBELOVER wrote:

the speakers cones look like new, they are an light tan color with a peeble
finish.


what i dont understand is the stiffness of the cone suspension. the cone will
barely move in and out with a significant force on the cones. is this normal?


"significant force" ... what color is the front suspension, black?

rg


--
*******************************************
* My site is at: http://www.muyiovatki.dk *
*******************************************


  #16   Report Post  
Peter Larsen
 
Posts: n/a
Default JBL LE 14C speakers

TUBELOVER wrote:

the speakers cones look like new, they are an light tan color with a peeble
finish.


what i dont understand is the stiffness of the cone suspension. the cone will
barely move in and out with a significant force on the cones. is this normal?


"significant force" ... what color is the front suspension, black?

rg


--
*******************************************
* My site is at: http://www.muyiovatki.dk *
*******************************************
  #17   Report Post  
Peter Larsen
 
Posts: n/a
Default JBL LE 14C speakers

TUBELOVER wrote:

the speakers cones look like new, they are an light tan color with a peeble
finish.


what i dont understand is the stiffness of the cone suspension. the cone will
barely move in and out with a significant force on the cones. is this normal?


"significant force" ... what color is the front suspension, black?

rg


--
*******************************************
* My site is at: http://www.muyiovatki.dk *
*******************************************
  #18   Report Post  
TUBELOVER
 
Posts: n/a
Default JBL LE 14C speakers

the suspension is a yellow colored surround which looks like rubber or a rubber
coated cloth.
rg
  #19   Report Post  
TUBELOVER
 
Posts: n/a
Default JBL LE 14C speakers

the suspension is a yellow colored surround which looks like rubber or a rubber
coated cloth.
rg
  #20   Report Post  
TUBELOVER
 
Posts: n/a
Default JBL LE 14C speakers

the suspension is a yellow colored surround which looks like rubber or a rubber
coated cloth.
rg


  #21   Report Post  
TUBELOVER
 
Posts: n/a
Default JBL LE 14C speakers

the suspension is a yellow colored surround which looks like rubber or a rubber
coated cloth.
rg
  #22   Report Post  
Tony Pearce
 
Posts: n/a
Default JBL LE 14C speakers


"TUBELOVER" wrote in message
...
the suspension is a yellow colored surround which looks like rubber or a

rubber
coated cloth.


Sounds like the original rubber suspension which does yellow and harden with
age (originally a beige color). I wouldn't be pushing the cones by hand as
the VC clearances are small and you don't want to damage the voice coil if
it's still OK. OTOH if it doesn't work, and you can barely move the cone,
then it sounds like it is already stuffed, probably overdriven. Whilst being
a great speaker in its day, the coil former and epoxies used were much lower
temperature that today's drivers. If the voice coil expands, then it will
jam in the magnet gap, you will hear scraping sounds when you try to move
it.

TonyP.


  #23   Report Post  
Tony Pearce
 
Posts: n/a
Default JBL LE 14C speakers


"TUBELOVER" wrote in message
...
the suspension is a yellow colored surround which looks like rubber or a

rubber
coated cloth.


Sounds like the original rubber suspension which does yellow and harden with
age (originally a beige color). I wouldn't be pushing the cones by hand as
the VC clearances are small and you don't want to damage the voice coil if
it's still OK. OTOH if it doesn't work, and you can barely move the cone,
then it sounds like it is already stuffed, probably overdriven. Whilst being
a great speaker in its day, the coil former and epoxies used were much lower
temperature that today's drivers. If the voice coil expands, then it will
jam in the magnet gap, you will hear scraping sounds when you try to move
it.

TonyP.


  #24   Report Post  
Tony Pearce
 
Posts: n/a
Default JBL LE 14C speakers


"TUBELOVER" wrote in message
...
the suspension is a yellow colored surround which looks like rubber or a

rubber
coated cloth.


Sounds like the original rubber suspension which does yellow and harden with
age (originally a beige color). I wouldn't be pushing the cones by hand as
the VC clearances are small and you don't want to damage the voice coil if
it's still OK. OTOH if it doesn't work, and you can barely move the cone,
then it sounds like it is already stuffed, probably overdriven. Whilst being
a great speaker in its day, the coil former and epoxies used were much lower
temperature that today's drivers. If the voice coil expands, then it will
jam in the magnet gap, you will hear scraping sounds when you try to move
it.

TonyP.


  #25   Report Post  
Peter Larsen
 
Posts: n/a
Default JBL LE 14C speakers

TUBELOVER wrote:

the suspension is a yellow colored surround which looks
like rubber or a rubber coated cloth.


That front suspension is - according to the information I have - likely
to be very aged and it could require replacement. A pair of new 14"
membrane assemblies are very costly. Most owners would agree that repair
is well worth it.

Try applying a 9 volt battery to the low frequency terminals - or main
terminal if this unit has internal x-over, could check but hasn't, and
see whether the membrane moves and listen for how it does it.

A very skilled repair guy may be able to fit a third party foam front
suspension to the units. Notice the wording "very skilled". These are
precision loudspeakers and there is not a lot of airspace around the
voice coil.

Do be careful when you handle the aluminium chassis. These loudspeakers
*require* a plane cabinet front for mounting and they *require* skilled
(x) tensioning of the mounting screws. Frame warp is a very real risk,
and mounting on an uneven surface may cause the aluminium to cold flow
to permanently warped. It is unknown to me whether cold flow can also
work to undo a warp if present. Cast aluminium tends to crack easily.

As for why it is aluminium: such a frame does not lead the magnetic
field astray.

As long as they are not warped and as long as the voice coil cap is not
filled up with melted copper these loudspeakers should have some kind of
a market value. They are hardly ever to be considered trash.

rg



Kind regards

Peter Larsen

--
*******************************************
* My site is at: http://www.muyiovatki.dk *
*******************************************


  #26   Report Post  
Peter Larsen
 
Posts: n/a
Default JBL LE 14C speakers

TUBELOVER wrote:

the suspension is a yellow colored surround which looks
like rubber or a rubber coated cloth.


That front suspension is - according to the information I have - likely
to be very aged and it could require replacement. A pair of new 14"
membrane assemblies are very costly. Most owners would agree that repair
is well worth it.

Try applying a 9 volt battery to the low frequency terminals - or main
terminal if this unit has internal x-over, could check but hasn't, and
see whether the membrane moves and listen for how it does it.

A very skilled repair guy may be able to fit a third party foam front
suspension to the units. Notice the wording "very skilled". These are
precision loudspeakers and there is not a lot of airspace around the
voice coil.

Do be careful when you handle the aluminium chassis. These loudspeakers
*require* a plane cabinet front for mounting and they *require* skilled
(x) tensioning of the mounting screws. Frame warp is a very real risk,
and mounting on an uneven surface may cause the aluminium to cold flow
to permanently warped. It is unknown to me whether cold flow can also
work to undo a warp if present. Cast aluminium tends to crack easily.

As for why it is aluminium: such a frame does not lead the magnetic
field astray.

As long as they are not warped and as long as the voice coil cap is not
filled up with melted copper these loudspeakers should have some kind of
a market value. They are hardly ever to be considered trash.

rg



Kind regards

Peter Larsen

--
*******************************************
* My site is at: http://www.muyiovatki.dk *
*******************************************
  #27   Report Post  
Peter Larsen
 
Posts: n/a
Default JBL LE 14C speakers

TUBELOVER wrote:

the suspension is a yellow colored surround which looks
like rubber or a rubber coated cloth.


That front suspension is - according to the information I have - likely
to be very aged and it could require replacement. A pair of new 14"
membrane assemblies are very costly. Most owners would agree that repair
is well worth it.

Try applying a 9 volt battery to the low frequency terminals - or main
terminal if this unit has internal x-over, could check but hasn't, and
see whether the membrane moves and listen for how it does it.

A very skilled repair guy may be able to fit a third party foam front
suspension to the units. Notice the wording "very skilled". These are
precision loudspeakers and there is not a lot of airspace around the
voice coil.

Do be careful when you handle the aluminium chassis. These loudspeakers
*require* a plane cabinet front for mounting and they *require* skilled
(x) tensioning of the mounting screws. Frame warp is a very real risk,
and mounting on an uneven surface may cause the aluminium to cold flow
to permanently warped. It is unknown to me whether cold flow can also
work to undo a warp if present. Cast aluminium tends to crack easily.

As for why it is aluminium: such a frame does not lead the magnetic
field astray.

As long as they are not warped and as long as the voice coil cap is not
filled up with melted copper these loudspeakers should have some kind of
a market value. They are hardly ever to be considered trash.

rg



Kind regards

Peter Larsen

--
*******************************************
* My site is at: http://www.muyiovatki.dk *
*******************************************
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