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+!(Q!(_)$#&!"'7 *,&&!(_*
EG9QH9->N+G9=73-=9m+=99+E@82+!52+:-+?K9+=,O9+O,--9G;+J@?K
?K9+>G3==#3S9G+EG9QH9->N+E3G+?K9+O,@-+=79,L9G=+=9?+?33+I3J
W>G3==#3S9G+EG9Q2+E3G+?K9+=HPJ33E9G+?33+K@8KX;+?K9G9+J@II+P9
?33+OH>K+3E+,-+3S9GI,7+P9?J99-+=HPJ33E9G+,-.+O,@-
=79,L9G=;+,8,@-+G9=HI?@-8+@-+@->3GG9>?+3S9G,II+EG9QH9->N
G9=73-=9m+=99+E@82+!42+/3GG9>?+=9??@-8=+,G9+@IIH=?G,?9.+@-+E@82+!%2
+85@)Lb
Subwoofer cross-over frequency set too high (main
speakers too low): Bump in frequency response.
+85@)LS
Subwoofer cross-over frequency too low (main speakers
too high): Gap in frequency response
+85@)Lc
Subwoofer & main speakers cross-over frequencies set
correctly: Smooth frequency response.
f,-N+OHI?@#>K,--9I+7G3>9==3G=+,-.+G9>9@S9G=+7G3S@.9
9I,P3G,?9+P,==#O,-,89O9-?+=N=?9O=+JK9G9+?K9+>G3==#3S9G
EG9QH9->N+E3G+P3?K+=HPJ33E9G+,-.+O,@-+=79,L9G=+>,-+P9
=9?2+:E+N3H+,G9+H=@-8+=H>K+,+P,==#O,-,89O9-?+=N=?9O;+N3H
>,-+=9I9>?+?K9+l[I,?l+=9??@-8+3-+?K9+=HPJ33E9G=+G9O3?9
>3-?G3I;+,=+,II+E@I?9G@-8+K,=+P99-+.3-9+PN+?K9+P,==#
O,-,89O9-?+=N=?9O2+/,G9EHIIN+E3II3J+?K9+@-=?GH>?@3-=+E3G
?K9+,O7I@E@9GB7G3>9==3G+3G+G9>9@S9G2
b :E+N3H+,G9+H=@-8+N3HG+=N=?9O\=+P,==#O,-,89O9-?+
=N=?9O;+9-=HG9+?K,?+?K9+=HPJ33E9G=+>G3==#3S9G+
EG9QH9->N+K,=-\?+P99-+=9?+?3+?K9+=,O9+3G+I3J9G+
EG9QH9->N+>3O7,G9.+?3+?K9+=9??@-8+>K3=9-+J@?K+?K9
P,==+O,-,89O9-?+=N=?9O2
b 09I9>?@-8+?K9+>3GG9>?+EG9QH9->N+.979-.=+?3+,+I,G89
9V?9-.+3-+?K9+O,@-+=79,L9G=2+03O9?@O9=+O,@-+
=79,L9G=+,G9+=79>@E@>,IIN+@-?9-.9.+?3+J3GL+J@?K+,+
=HPJ33E9G2+:-+=H>K+>,=9=;+?K9+O,@-+=79,L9G=+>,-+
89?+.,O,89.+PN+,+EHII#G,-89+,O7I@E@9G+=@8-,I2+:E+@-+
.3HP?;+>K9>L+?K9+@-=?GH>?@3-+O,-H,I+E3G+?K9+O,@-+
=79,L9G=+E3G+,-N+G9=?G@>?@3-=+3G+G9>3OO9-.,?@3-=2
_E+>3HG=9+@?+@=+73==@PI9+?3+>3OP@-9+?K9+=HPJ33E9G+@-+,
=N=?9O+JK9G9+?K9+I3H.=79,L9G=+,G9+P9@-8+E9.+J@?K+,+EHII#
G,-89+=@8-,I2+:-+?K,?+>,=9;+=9??@-8+?K9+>G3==#3S9G+EG9QH9->N
E3G+?K9+=HPJ33E9G+.979-.=+S9GN+OH>K+3-+?K9+-,?HG,I+G3II#3EE
EG9QH9->N+@-+?K9+P,==+3E+?K9+O,@-+=79,L9G=2+:-+89-9G,I;+,
I,G89;+EI33G#=?,-.@-8+=79,L9G+J@II+=?@II+K,S9+=@8-@E@>,-?
_H?7H?+@-+?K9+.9979G+P,==+G,-89;+@-+JK@>K+>,=9+?K9+>G3==#
3S9G+EG9QH9->N+=K3HI.+P9+=9?+?3+D"Z]2+1 =O,II+3G+S9GN+=O,II
=79,L9G+J@II+K,S9+I9==+.997+P,==+_H?7H?+@-+JK@>K+>,=9+?K9
=9??@-8+=K3HI.+P9+)"Z]2+3G+!""Z]2+M3+E@-.+?K9+>3GG9>?
=9??@-8+@-+=H>K+=>9-,G@3=c
b ^I,N+,+OH=@>+?G,>L+?K,?+K,=+,+=@8-@E@>,-?+,O3H-?+3E+P,==
3S9G+,+I,G89+P,==+G98@3-2+1-+@-=?GHO9-?+=H>K+,=+,
.3HPI9#P,==+3G+P,==#8H@?,G+@=+S9GN+=H@?,PI92+0?,G?@-8+J@?K
?K9+lD"l+Z]+73=@?@3-+WE@G=?+PH??3-+I9E?+@-+G3J+e32+5+@-+E@82
DX;+H=9+?K@=+?G,>L+?3+=9?+?K9+=HPJ33E9G=+G9I,?@S9+S3IHO9
I9S9I2