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s o n a m p
a 1 5 0 s u b w o o f e r a m p l i f i e r
®
ideally, the f
control should be set to the frequency
requenCY
where your main speakers' low-frequency response roll-off is
–3db. however, this is usually impossible to determine
without sophisticated test equipment since each listening
room has a different influence on your main speakers' bass
performance.
n
: T
f
o T e
h e
r e q u e n C Y C o n T r o l D o e s n o T f u n C T i o n w h e n
b
T h e
Y p a s s b u T T o n i s i n T h e
P
switch
hase
when the a150's p
switch is in the 0° position, a positive
hase
input voltage will cause the bps-1 subwoofer 's speaker cone
to move out (towards the room). when the p
the 180° position a positive input voltage will cause the sub-
woofer cone to move in (away from the room).
There is no absolute correct setting for the p
Depending on the location of the subwoofer relative to your
main speakers and seating location, one of the settings will
produce a better match with the main speakers, improving bass
impact and in some cases, improving overall bass level as well.
To determine the correct setting of the p
music with significant impactful bass content with the switch in
each position (it may be helpful to sit in the normal listening
position while someone else changes the p
0° and 180°). leave the switch in the position that produces
audibly louder bass with more impact.
n
: T
p
o T e
h e
h a s e
s w i T C h
b
p o s i T i o n T h e
Y p a s s s w i T C h i s s e T i n
v
control
olume
The V
control sets the bps-1 subwoofer 's volume. when
olume
setting the a150's V
olume
setting where the bass sounds balanced on both music and
films. listen to several different music recordings and film
soundtracks that contain strong bass passages and try to find
a setting for the V
control that doesn't over-emphasize
olume
the bass or make it sound weak.
The most accurate way to set the V
calibrated test noise or test tones and a sound-pressure level
(spl) meter or real-time analyzer. There are several CDs and
DVDs that contain subwoofer test signals. if you use an spl
meter, set the a150's V
subwoofer plays at the same volume as the system's other
speakers.
n
: T
V
o T e
h e
o l u m e C o n T r o l D o e s n o T f u n C T i o n w h e n T h e
b
o n
Y p a s s s w i T C h i s i n T h e
built-in limiter
The a150 has a built-in limiter that prevents overdriving the bps-
1 subwoofer. This allows the bps-1 subwoofer system to pro-
duce optimium bass output while maintaining long-term reilia-
bility. The limiter has no user or installer adjustments.
o n
.
p o s i T i o n
switch is in
hase
hase
switch, listen to
hase
switch between
hase
w i l l
f u n C T i o n
n o
m a T T e r
.
control by ear, try to find a volume
control is with
olume
control so that the bps-1
olume
.
p o s i T i o n
specifications
a150
Po w e r O u t p u t :
Po w e r O u t p u t ( Pr o g r a m ) :
Fr e q u e n c y Re s p o n s e :
Total Harmonic Distortion:
S i g n a l - t o - N o i s e Ra t i o :
Input Sensitivity (Stereo Inputs): 2 5 m V f o r 9 0 W @ 4 o h m s ( v o l u m e
Input Sensitivity (LFE, Mono Input): 6 0 0 m V f o r 9 0 W @ 4 o h m s
I n p u t I m p e d a n c e :
switch.
Hi-Level Out Hi-Pass Filter:
Line Level Out Hi-Pass Filter: – 3 d B @ 1 5 0 H z , 6 d B / o c t a v e
Po w e r c o n s u m p t i o n :
AC Fu s e ( 1 2 0 V Ve r s i o n ) :
AC Fu s e ( 2 3 0 V Ve r s i s o n ) :
Speaker Fuse (One BPS -1):
Speaker Fuse (Two BPS -1s): 2 . 0 A ( T 2 A L ~ 2 5 0 V )
w h a T
H e a t O u t p u t :
Dimensions (W x H x D):
Dimensions w/Rack Ears
(W x H x D):
Ra c k S p a c e Re q u i r e m e n t s : 2 U
S h i p p i n g We i g h t :
4
9 0 w a t t s R M S @ 4 o h m s
1 5 0 w a t t s @ 4 o h m s
3 1 H z - 1 5 0 H z ( v a r i a b l e t o 4 0 H z )
. 0 5 % 2 0 H z - 3 0 0 H z @ 8 o h m s
– 9 5 d B ( w / 2 2 k H z A-W T G f i l t e r )
c o n t r o l @ m a x )
( B y p a s s m o d e l )
2 0 k o h m s
– 3 d B @ 2 0 0 H z , 6 d B / o c t a v e
1 6 0 w a t t s m a x i m u m ( 4 o h m s , f u l l
p o w e r ) ; 1 3 w a t t s i d l e ( n o s i g n a l )
4 A ( T 4 A L ~ 2 5 0 V )
2 A ( T 2 A L ~ 2 5 0 V )
1 . 6 A ( T 1 . 6 A L ~ 2 5 0 V )
98 BTU/HR @ 8 ohms (rock music);
140 BTU/HR @ 4 ohms (rock music)
1 6 ¾ " x 4 " x 1 3 ½ "
( 4 2 5 m m x 1 0 2 m m x 3 4 3 m m )
1 9 " x 4 " x 1 3 ½ "
( 4 8 9 m m x 1 0 2 m m x 3 4 3 m m )
2 0 l b s ( 9 . 1 k g ) e a c h
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