Speaker
repair parts and speaker repair for JBL, Bose, Acoustic
Research, Advent, Boston Acoustics, Infinity, Electro
Voice and many more. Replacement speaker
diaphragms, cones, foam edges, voice coils, woofers,
midranges and tweeters.
-
tweeters
-
woofers
-
crossovers
-
midrange
units
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foam
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cloth
grill
-
metal
grills
-
2-way
speaker
-
3-way
speakers
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Bose
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JBL
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Infinity
-
cabinets
-
box
speakers
-
speaker cones
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refurbishment
-
speaker
repair
-
replacement speakers
Speakers,
modern or classic, generally comprise of a cabinet or
box, housing the drivers (woofers, tweeters, midrange)
and a crossover unit. The box is constructed in such a
way as to prevent unwanted resonance which creates
colorations of the sound. The cabinets are generally
damped with foam to minimize internal sound reflections,
and are braced internally to provide rigidity.
Internally braced / damped speaker cabinets can be
remarkably free from colorations that negatively effect
sound quality.
Generally,
most leading manufacturers like Bose, JBL etc, make
speakers that are easy to service and repair.
Loudspeakers are inherently 'modular' by design, so
replacing drivers or other components can be quite a
simple task.
Drivers
(Woofer for bass and tweeter for treble) are usually
secured from the front of the cabinet by allen
bolts or philips head screws. They can be unbolted
from the front and drawn out of the aperture for easy
replacement. Wiring onto the driver is generally via a
crimped spade termination which simply slides off the
connector with minimal effort.
Ordering
the correct components is perhaps the most difficult
part of the refurbishment process, one which we can help
you with.
Once you
have dismantled the drivers it is often necessary to
replace gaskets and seals to ensure the new driver is
properly seated. Also, if your speaker is older than say
7-10 years, you should fully inspect the foam for signs
of foam rot. If there are any signs of the foam material
perishing then replace with new.
Handle the
replacement drivers carefully, avoiding contact with the
paper, polypropylene or metal film domes. Touching these
domes can result in deformation of the cone surface and
a reduction in sound quality. This area of the speaker
is very sensitive.
If
crossovers
need to be replaced then this is better done as a whole
unit, rather than trying to locate individual
components. Crossovers are usually accessible from the
front of the speaker after having removed the woofer driver.
Some facilitate access via a removable panel at the
rear, or some even use external x-overs.
Locating
and supporting your speakers is extremely critical and
can have significant impact on the sound quality. Most
reputable manufacturers will offer some placement
guidance through the product literature, and some will
supply dedicated speaker stands. It is very worthwhile
using the appropriate stands, as this has a significant
effect on sound. Placement is more of a personal
preference, and different placements within your
listening room will reveal different aspects of the
speaker sound. Generally, placement close to the front
wall (directly behind the speaker) should be avoided,
though some designs are made for operation close to the
wall.
Home audio
speakers are much more particular about placement - home
theater or surround speaker units are also particular about
placement.