1
S408 REPAAIR MANNUUAALL
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3
Top left woofer replacement:
1
2
8
6
7
8
1
2
3
4
5
6
3
7
4
5
9
10
11
12
Eight sc rews need to be removed
Six sc rews need to be removed from
2
from the woofer using the phillips hea d
sc rewdriver. Onc e the sc rews a re
1
ea c h side of the front of the grill (twelve
sc rews tota l) using the phillips hea d
sc rewdriver. This grill ha s a tendenc y to
wa nt to “pop” off, so plea se be sure to
hold it in pla c e with one ha nd or a rm
while removing the sc rews with your
free ha nd. In a ddition to the grill, the
sc rews a lso hold the dec ora tive trim. The
trim should be removed, too. Keep the
twelve sc rews in a sa fe pla c e.
removed, the woofer ma y be loosened
by prying a fla t hea d sc rewdriver in
between the c a binet a nd the woofer;
a good pla c e to sta rt is in the notc hes
loc a ted just a bove the horn a ssembly
a nd below the woofer (a s pointed out
by the a rrows in the pic ture a bove).
Also note the “tinsel dressing tea rdrops”
(c irc led a bove) whic h a re fa c ing down.
The woofer should be pla c ed ba c k the
sa me wa y. It is for visua l c onsistenc y.
More importa ntly, the c a bles from the
printed c irc uit boa rd to the woofer
termina ls a re quite short; it proba bly
would not work otherwise. The eight
sc rews should be kept in a sa fe pla c e.
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4
Top left woofer replacement continued:
C a refully begin to remove the woofer.
3
Caution: The woofer is a pproxima tely
8 pounds with the weight unevenly
distributed.
-
The pic ture a bove shows wha t the S408
looks like with the grill a nd top left woofer
removed. Pla c e the new woofer (pa rt
#0011806) where the old one wa s. Follow
the sa me steps a s a bove, but ba c kwa rds
4 to 1. Power up the S408 a nd the
new woofer should now be pumping
out glorious lows. Awesome, you just
repla c ed a n 8” woofer!
+
5
push down
The positive (blue a nd bla c k) a nd
4
nega tive (solid bla c k) c a bles a re still
a tta c hed to the woofer termina ls.
Remove the c a bles from their termina ls
simply by pushing down on the termina l
a nd pulling out the c a ble.
If you find it too diffic ult to c onnec t the
c a bles to the woofer termina ls due to
the short length of the c a bles, there
is a n ea sier (a lbeit lengthier) wa y to
c onnec t them. Instea d of rec onnec ting
the c a bles to their termina ls, just a tta c h
the woofer to the c a binet a s norma l.
Follow steps 1-5 on how to remove the
horn a ssembly (pa ges 11-12) a s this is
a n ea sier wa y to a c c ess the woofer
termina ls without ha ving to work under
suc h tight c irc umsta nc es!
*
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5
Top right woofer replacement:
1
5
8
2
7
1
2
3
4
5
6
7
3
8
6
4
9
10
11
12
Eight sc rews need to be removed
Six sc rews need to be removed from
ea c h side of the front of the grill (twelve
sc rews tota l) using the phillips hea d
sc rewdriver. This grill ha s a tendenc y to
wa nt to “pop” off, so plea se be sure to
hold it in pla c e with one ha nd or a rm
while removing the sc rews with your
free ha nd. In a ddition to the grill, the
sc rews a lso hold the dec ora tive trim. The
trim should be removed, too. Keep the
twelve sc rews in a sa fe pla c e.
2
from the woofer using the phillips hea d
sc rewdriver. Onc e the sc rews a re
1
removed, the woofer ma y be loosened
by prying a fla t hea d sc rewdriver in
between the c a binet a nd the woofer;
a good pla c e to sta rt is in the notc hes
loc a ted just a bove the horn a ssembly
a nd below the woofer (a s pointed out
by the a rrows in the pic ture a bove).
Also note the “tinsel dressing tea rdrops”
(c irc led a bove) whic h a re fa c ing down.
The woofer should be pla c ed ba c k the
sa me wa y. It is for visua l c onsistenc y.
More importa ntly, the c a bles from the
printed c irc uit boa rd to the woofer
termina ls a re quite short; it proba bly
would not work otherwise. The eight
sc rews should be kept in a sa fe pla c e.
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6
Top right woofer replacement continued:
C a refully begin to remove the woofer.
3
Caution: The woofer is a pproxima tely
8 pounds with the weight unevenly
distributed.
The pic ture a bove shows wha t the S408
looks like with the grill a nd top right
woofer removed. Pla c e the new woofer
(pa rt #0011806) where the old one wa s.
Follow the sa me steps a s a bove, but
ba c kwa rds 4 to 1. Power up the S408
a nd the new woofer should now be
pumping out glorious lows. Awesome,
you just repla c ed a n 8” woofer!
5
-
+
If you find it too diffic ult to c onnec t the
c a bles to the woofer termina ls due to
the short length of the c a bles, there
is a n ea sier (a lbeit lengthier) wa y to
c onnec t them. Instea d of rec onnec ting
the c a bles to their termina ls, just a tta c h
the woofer to the c a binet a s norma l.
Follow steps 1-5 on how to remove the
horn a ssembly (pa ges 11-12) a s this is
a n ea sier wa y to a c c ess the woofer
termina ls without ha ving to work under
suc h tight c irc umsta nc es!
*
push down
The positive (blue a nd bla c k) a nd
4
nega tive (solid bla c k) c a bles a re still
a tta c hed to the woofer termina ls.
Remove the c a bles from their termina ls
simply by pushing down on the termina l
a nd pulling out the c a ble.
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7
Bottom left woofer replacement:
7
8
1
2
3
4
5
6
9
10
11
12
1
5
8
6
2
4
7
3
Eight sc rews need to be removed
from the woofer using the phillips hea d
sc rewdriver. Onc e the sc rews a re
removed, the woofer ma y be loosened
by prying a fla t hea d sc rewdriver in
between the c a binet a nd the woofer;
a good pla c e to sta rt is in the notc hes
loc a ted just below the horn a ssembly
a nd a bove the woofer (a s pointed out
by the a rrows in the pic ture a bove).
Also note the “tinsel dressing tea rdrops”
(c irc led a bove) whic h a re fa c ing
upwa rds. The woofer should be pla c ed
ba c k the sa me wa y. It is for visua l
c onsistenc y. More importa ntly, the
c a bles from the printed c irc uit boa rd to
the woofer termina ls a re quite short; it
proba bly would not work otherwise. The
eight sc rews should be kept in a sa fe
pla c e.
Six sc rews need to be removed from
2
1
ea c h side of the front of the grill (twelve
sc rews tota l) using the phillips hea d
sc rewdriver. This grill ha s a tendenc y to
wa nt to “pop” off, so plea se be sure to
hold it in pla c e with one ha nd or a rm
while removing the sc rews with your
free ha nd. In a ddition to the grill, the
sc rews a lso hold the dec ora tive trim. The
trim should be removed, too. Keep the
twelve sc rews in a sa fe pla c e.
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8
Bottom left woofer replacement continued:
C a refully begin to remove the woofer.
3
Caution: The woofer is a pproxima tely
8 pounds with the weight unevenly
distributed.
push down
The pic ture a bove shows wha t the S408
looks like with the grill a nd bottom left
woofer removed. Pla c e the new woofer
(pa rt #0011806) where the old one wa s.
Follow the sa me steps a s a bove, but
ba c kwa rds 4 to 1. Power up the S408
a nd the new woofer should now be
pumping out glorious lows. Awesome,
you just repla c ed a n 8” woofer!
5
If you find it too diffic ult to c onnec t the
c a bles to the woofer termina ls due to
the short length of the c a bles, there
is a n ea sier (a lbeit lengthier) wa y to
c onnec t them. Instea d of rec onnec ting
the c a bles to their termina ls, just a tta c h
the woofer to the c a binet a s norma l.
Follow steps 1-5 on how to remove the
horn a ssembly (pa ges 11-12) a s this is
a n ea sier wa y to a c c ess the woofer
termina ls without ha ving to work under
suc h tight c irc umsta nc es!
*
-
+
The positive (blue a nd bla c k) a nd
4
nega tive (solid bla c k) c a bles a re still
a tta c hed to the woofer termina ls.
Remove the c a bles from their termina ls
simply by pushing down on the termina l
a nd pulling out the c a ble.
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9
Bottom right woofer replacement:
7
8
1
2
3
4
5
6
9
10
11
12
1
5
2
4
8
6
3
7
Eight sc rews need to be removed
Six sc rews need to be removed from
2
from the woofer using the phillips hea d
sc rewdriver. Onc e the sc rews a re
removed, the woofer ma y be loosened
by prying a fla t hea d sc rewdriver in
between the c a binet a nd the woofer;
a good pla c e to sta rt is in the notc hes
loc a ted just below the horn a ssembly
a nd a bove the woofer (a s pointed out
by the a rrows in the pic ture a bove).
Also note the “tinsel dressing tea rdrops”
(c irc led a bove) whic h a re fa c ing
upwa rds. The woofer should be pla c ed
ba c k the sa me wa y. It is for visua l
c onsistenc y. More importa ntly, the
c a bles from the printed c irc uit boa rd to
the woofer termina ls a re quite short; it
proba bly would not work otherwise. The
eight sc rews should be kept in a sa fe
pla c e.
1
ea c h side of the front of the grill (twelve
sc rews tota l) using the phillips hea d
sc rewdriver. This grill ha s a tendenc y to
wa nt to “pop” off, so plea se be sure to
hold it in pla c e with one ha nd or a rm
while removing the sc rews with your
free ha nd. In a ddition to the grill, the
sc rews a lso hold the dec ora tive trim. The
trim should be removed, too. Keep the
twelve sc rews in a sa fe pla c e.
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10
Bottom right woofer replacement continued:
C a refully begin to remove the woofer.
3
Caution: The woofer is a pproxima tely
8 pounds with the weight unevenly
distributed.
push down
The pic ture a bove shows wha t the S408
looks like with the grill a nd bottom right
woofer removed. Pla c e the new woofer
(pa rt #0011806) where the old one wa s.
Follow the sa me steps a s a bove, but
ba c kwa rds 4 to 1. Power up the S408
a nd the new woofer should now be
pumping out glorious lows. Awesome,
you just repla c ed a n 8” woofer!
5
-
+
If you find it too diffic ult to c onnec t the
c a bles to the woofer termina ls due to
the short length of the c a bles, there
is a n ea sier (a lbeit lengthier) wa y to
c onnec t them. Instea d of rec onnec ting
the c a bles to their termina ls, just a tta c h
the woofer to the c a binet a s norma l.
Follow steps 1-5 on how to remove the
horn a ssembly (pa ges 11-12) a s this is
a n ea sier wa y to a c c ess the woofer
termina ls without ha ving to work under
suc h tight c irc umsta nc es!
*
The positive (blue a nd bla c k) a nd
4
nega tive (solid bla c k) c a bles a re still
a tta c hed to the woofer termina ls.
Remove the c a bles from their termina ls
simply by pushing down on the termina l
a nd pulling out the c a ble.
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11
High Frequency Driver replacement:
7
8
1
2
3
4
5
6
2
9
3
1
4
7
9
12
11
5
6
10
11
12
10
8
Six sc rews need to be removed from
Twelve sc rews a nd fla t wa shers need
1
ea c h side of the front of the grill (twelve
sc rews tota l) using the phillips hea d
sc rewdriver. This grill ha s a tendenc y to
wa nt to “pop” off, so plea se be sure to
hold it in pla c e with one ha nd or a rm
while removing the sc rews with your
free ha nd. In a ddition to the grill, the
sc rews a lso hold the dec ora tive trim. The
trim should be removed, too. Keep the
twelve sc rews in a sa fe pla c e.
2
to be removed from the horn a ssembly
using the phillips hea d sc rewdriver.
Onc e the sc rews a re removed, the horn
a ssembly ma y be loosened by prying
a fla t hea d sc rewdriver in between the
c a binet a nd the horn a ssembly; there
a re a myria d of pla c es to wedge the
sc rewdriver (a s pointed out by the a rrows
in the pic ture a bove). The twelve sc rews
should be kept in a sa fe pla c e.
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12
High Frequency Driver replacement continued:
C a refully begin to remove the entire
3
4
horn a ssembly (with the high frequenc y
driver still a tta c hed).
Caution: The horn weighs a bout 8
pounds, a nd the weight is unevenly
distributed.
-
This is wha t it looks like with the grill
a nd horn a ssembly removed. See the
next pa ge for further instruc tions a nd
a dditiona l pic tures on how to remove
a nd repla c e the high frequenc y driver.
5
Push down
+
The positive (red a nd bla c k) a nd
nega tive (solid bla c k) c a bles a re still
a tta c hed to the high frequenc y driver
termina ls. Remove the c a bles from their
termina ls simply by pushing down on the
termina l a nd pulling out the c a ble.
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13
High Frequency Driver replacement continued:
bolt
loc kingg wa sher
fla t wa sher
Four bolts a nd eight wa shers ma y be
6
removed from the driver using the 8mm
c ombina tion wrenc h. Turn c ounter-
c loc kwise to loosen a nd remove,
c loc kwise to tighten. The other three
a re loc a ted a round the horn a ssembly.
Notic e tha t the fla t wa sher is on the
bottom, followed by the loc king wa sher,
a nd fina lly the bolt.
The horn a ssembly should ea sily lift right
off of the high frequenc y driver. Pla c e
the new high frequenc y driver (pa rt
#0008093) where the old one wa s. Follow
the sa me steps a s a bove, but ba c kwa rds
8 to 1. Power up the S408 a nd the new
driver should now be pumping out those
highs a ga in. Fa nta stic , you just repla c ed
a high frequenc y driver!
8
Keep the four bolts, four loc king wa shers,
a nd four fla t wa shers in a sa fe pla c e.
7
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14
Diaphragm replacement:
At the present time (Ja nua ry 2007),
dia phra gms a re not c urrently a va ila ble,
so you will ha ve to repla c e the c omplete
driver following the previous sec tion
(pa ges 11-13). If you ha ve rec eived
a dia phra gm, plea se follow the steps
below.
1
2
Follow steps 1-5 of the high frequenc y
driver repla c ement instruc tions, a s the
horn will need to be removed in order to
a c c ess the dia phra gm.
1
4
2
3
Keep the four sc rews in a sa fe pla c e.
The horn a ssembly is shown a bove with
the high frequenc y driver c irc led. Four
sc rews need to be removed from the
driver using the 3mm a llen wrenc h.
4
5
3
The dia phra gm a nd pla te a da pter a re
ea sily removed from the horn a ssembly.
Notic e the termina l loc a tions in rela tion
to the indents of the high frequenc y
driver (c irc led a bove).
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15
Diaphragm replacement continued:
This is wha t the pla te a da pter (left) a nd
dia phra gm (right) both look like. Pla c e
the new dia phra gm (pa rt # c oming
soon) where the old one wa s. Follow the
sa me steps a s a bove, but ba c kwa rds
6 to 1. Power up the S408 a nd the new
dia phra gm should now be pumping
out those highs a ga in. Sweet, you just
repla c ed a dia phra gm!
7
This is wha t the pla te a da pter a nd
6
dia phra gm look like a fter they ha ve
been removed from the horn a ssembly.
The dia phra gm is sepa ra ted from the
pla te a da pter simply by pushing down
on the termina ls.
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16
Input assembly replacement:
1
2
1
2
8
7
3
8
7
3
4
4
6
5
5
6
Eight sc rews need to be removed from
the input a ssembly (loc a ted on the
rea r of the c a binet) using the phillips
hea d sc rewdriver. Onc e the sc rews
a re removed, the input a ssembly ma y
be loosened by prying a fla t hea d
sc rewdriver in between it a nd the
c a binet. Keep the eight sc rews in a sa fe
pla c e.
1
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17
Input assembly replacement continued:
J3
+
J4
-
1
2
Thru
Input
Pull out
J3
+
J4
-
1
2
Thru
Input
Onc e loosened, the input a ssembly ma y
2
be ea sily removed from the c a binet. Do
not c ompletely ta ke the input a ssembly
off yet, a s two c a bles need to be
removed first.
Two c a bles need to be removed from
the input a ssembly PC B (a s shown
on the left a nd a bove): (1) the solid
bla c k c a ble a tta c hes to the nega tive
termina l (c onnec tion J4). This is for
the input ja c k, a nd (2) the grey a nd
bla c k c a ble a tta c hes to the positive
termina l (c onnec tion J3). This is for the
thru ja c k. Do not forc e c a ble remova l
or c onnec tion, a lthough needle-nose
pliers ma y a id in loosening the c rimped
c a bles.
3
Pull out
J4
J3
-
+
Input
Thru
1 2
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18
Input assembly replacement continued:
Pla c e the new input a ssembly (pa rt
4
#0012048) where the old one wa s. Follow
the sa me steps a s a bove, but ba c kwa rds
3 to 1. Remove the seria l number from
the fa ulty input a ssembly (a s shown
in the pic ture a bove) a nd pla c e on
the new input a ssembly. Power up the
S408 a nd relish in the fa c t tha t you just
repla c ed a n input a ssembly. Ha ts off to
you for a job well done!
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