Boss Audio Systems Car Amplifier BASS1000 User Manual

U S E R ’ S M A N U A L  
page  
CONTENTS  
Introduction  
12” Amplified Subwoofer  
with Passive Radiator  
BASS1000  
2
2
2
3
4
4
4
4
4
6
8
9
9
What is included?  
Congratulations on your  
Features  
purchase of a  
BASS1000  
Amplified Subwoofer.  
General precautions  
Protection circuitry  
Installation precautions  
Fuses  
It has been designed, engineered  
and manufactured to bring you  
the highest level of performance  
and quality, and will afford you  
years of listening pleasure.  
Mounting the subwoofer  
Connecting the subwoofer  
Front panel controls and features  
Input wiring  
Thank you for making a  
your choice for car audio  
entertainment!  
Power connections  
Remote level control connection  
10 Troubleshooting  
11 Specifications  
BASS1000 Amplified Subwoofer User’s Manual - page 1  
 
General precautions  
Protection Circuitry  
The built-in amplifier incorporates  
special protection circuitry which will  
disable the amplifier if any of the  
following should occur:  
Before installing and using your new  
amplified subwoofer, please  
become familiar with all the infor-  
mation contained in this manual.  
• Input overload  
Please keep this manual in a safe  
place for future reference.  
• Short circuit  
• Do not open or attempt to repair this  
unit yourself. Dangerous high voltages  
are present which may result in electric  
shock. Refer any repairs to a qualified  
service technician.  
• Extremely high temperatures  
If any of these conditions is detected,  
the amplifier will go into a self-  
preservation mode, and the PROTECT  
LED on the control panel will glow in  
RED color.  
To avoid risk of electronic shock or  
damage to the unit, do not permit any  
of this equipment to become damp or  
wet from water or drinks. If this does  
occur, immediately unplug the power  
wires and send the product to your  
local dealer or service center as soon  
as possible.  
What should I do if the POWER STATUS  
LED turns RED?  
If you observe that the POWER STATUS  
LED IS RED, please check the system  
carefully to determine what has caused  
the protection circuit to engage.  
• If there is smoke or any peculiar odor  
present during use or if there is damage  
to any of the component enclosures,  
immediately unplug the power cord  
and send the product to your local  
dealer or service center as soon as  
possible .  
To reset the amplified subwoofer when  
it is in PROTECT mode, turn the power  
off to the system (usually by turning off  
the head unit or other signal source  
which feeds the amplifier) and then turn  
it on again.  
If the internal amplifier has shut down  
due to thermal overload, you should first  
allow it to cool down before restarting.  
SHOCK HAZARD! Do not open the case  
of this product. There are dangerous  
voltages present within the unit. There are  
no user-serviceable parts within the unit.  
If the shut down was due to either an  
input overload or a short circuit, be sure  
to correct these conditions before  
attempting to power up the subwoofer  
again.  
BASS1000 Amplified Subwoofer User’s Manual - page 3  
 
Installation precautions  
Mounting the subwoofer  
Before you drill or cut any holes,  
investigate your car's layout very  
carefully. Take special care when you  
work near the gas tank, fuel lines,  
hydraulic lines and electrical wiring.  
1. Find a suitable location in the vehicle  
in which to mount the amplifier. Since  
the subwoofer is a large, heavy  
enclosure, it is highly recommended  
that you mount it in the trunk  
compartment of your vehicle.  
Never operate the subwoofer when it  
is unmounted. Attach all audio system  
components securely within the  
amplifier to prevent damage, especially  
in an accident.  
2. Make sure there is sufficient air  
circulation around the intended  
mounting location.  
3. Mark the location for the mounting  
hole screws by positioning the cabinet  
where you wish to install it. Use heavy  
duty bolts to secure it. After you  
tightened it down, try to shake it or  
move it. Then tighten the screws again.  
Do not mount this product so that wire  
connections are unprotected, in a  
pinched condition, in contact with any  
metal surfaces in your vehicle, or likely  
to be damaged by nearby objects.  
Before making or breaking power  
connections in your system,  
Connecting the subwoofer  
Before doing any wiring, look through  
this manual and identify the diagrams  
to follow for power, input and speaker  
connections for your particular  
disconnect the vehicle battery. Confirm  
that your head unit or other equipment  
is turned off while connecting the input  
jacks and speaker terminals.  
installation. Be sure you understand  
all the connections before you proceed.  
If you need to replace the power fuse,  
replace it only with a fuse identical to  
that supplied with the product. Using  
a fuse of a different type or rating may  
result in damage to your audio system  
or your amplifier which isnot covered  
by the manufacturer's warranty.  
1. Connect the ground terminal to the  
closest point on the chassis of the  
vehicle. Keep this ground wire to less  
than 39" (100 cm) in length. Use 8  
gauge (or heavier) wire.  
Fuses  
2. Connect the remote terminal to the  
remote output of the head unit using  
16 gauge (or heavier) wire.  
Power fuses protect both the amplifier  
and the electrical system of your car  
from fault conditions. If you must  
replace a fuse in your BASS1000  
powered subwoofer, use a fuse of  
exactly the same type and rating. Using  
a different type or rating of fuse may  
result in damage to your amp or vehicle  
or cause a fire.  
3. Connect an empty fuse holder within  
18" (45 cm) of the car battery, and run  
8 gauge (or heavier) cable from this  
fuse to the amplifier location.  
4. Check that the fuse holder is empty.  
Then connect the fuse holder to the  
"BATT+" connection on the amplifier.  
BASS1000 Amplified Subwoofer User’s Manual - page 4  
 
Don't misuse the  
level control!  
Do not mistake the input level control  
for a volume control! It is designed  
ONLY to match the output level of  
your audio source to the input level  
of your subwoofer.  
6. Connect all line inputs and outputs (if  
used) using high-quality cables. Connect  
all speakers, following the diagrams in  
this manual. Be sure to observe proper  
polarity to avoid audio phase problems.  
7. Insert fuse(s) into the battery fuse  
holder(s).  
Do not adjust this input level to  
maximum unless your input level  
requires it.  
8. Recheck all connections before  
powering up the subwoofer.  
Ignoring these instructions will result  
in an input overload to the amplifier  
in the subwoofer, and excessive  
audio distortion. It can also cause  
the protection circuit to engage.  
9. Set all level controls to minimum  
position, and set all crossover  
controls/switches to the desired  
frequency points.  
10. Power up the head unit and the  
subwoofer. Then set the volume control  
on the head unit to about 3/4 volume,  
and adjust the subwoofer's input level  
controls to just below the level of  
distortion.  
11. Further fine tuning of the various  
controls may be necessary to obtain best  
results.  
BASS1000 Amplified Subwoofer User’s Manual - page 5  
 
Controls and features  
1
2
3
4
5
POWER  
PHASE  
SHIFT  
LOW PASS  
FILTER  
BASS  
BOOST  
INPUT  
GAIN  
CONNECTIONS  
GROUND  
REMOTE  
0
180º  
50Hz 150Hz  
0
+12dB  
MIN MAX  
AMPLIFIED SUBWOOFER  
+12V  
INPUTS  
REMOTE  
LEVEL  
CONTROL  
LINE  
LEVEL  
POWER STATUS  
L
GREEN = ON  
HIGH LEVEL  
RED = PROTECTION  
FUSE  
R
6
7
8
9
10  
POWER TERMINALS  
BASS BOOST  
1
2
4
5
The bass boost feature will increase  
the sound level in the bass frequencies.  
PHASE SHIFT  
Use this switch to help compensate  
for time alignment problems in the  
system. Such problems usually result  
from having the subwoofer at a  
INPUT GAIN CONTROL  
After you have installed your system,  
turn this control to minimum  
different distance from the listener  
than the other speakers in the system.  
Turn the head unit on (and the  
subwoofer will turn on via the remote  
connection). Turn the head unit  
volume to about 2/3 full level.  
LOW PASS FILTER  
3
Slowly turn up the subwoofer input  
gain control until you hear a small  
amount of distortion. Then reduce the  
level until the distortion is completely  
gone. Leave the control at this setting.  
This control permits you define the  
frequency range you want the  
subwoofer amplifier to receive. The  
subwoofer will reproduce all sound  
BELOW the frequency you set.  
If the rest of your system is weak on  
the mids, you may wish to set this  
control relatively high. If the midrange  
is well covered by the rest of your  
system, you will probably want the  
subwoofer to only receive lower  
frequency signal.  
FUSE  
6
The fuse in the upper socket is the  
fuse which provides protection for the  
circuitry. The fuse is rated at 25A. Do  
not use a fuse with a different value  
and NEVER replace the fuse with a  
wire or coin.  
BASS1000 Amplified Subwoofer User’s Manual - page 6  
 
POWER STATUS LED  
7
This bi-color LED glows green when  
power is on and no problems are  
present. If one of the protection circuits  
comes on, it will change to red.  
REMOTE LEVEL CONTROL PORT  
Attach the included remote level  
control to control the volume level of  
the subwoofer independently.  
8
9
HIGH LEVEL (speaker level)  
INPUTS  
If your head unit does not have RCA  
outputs, you can use the speaker  
outputs for the audio source for the  
BASS1000. Use the supplied cable  
and wire harness and connect the  
outputs properly as shown in the  
connection diagram in this manual.  
LOW LEVEL RCA INPUTS  
Low level inputs are the  
10  
recommended way to introduce the  
audio signal to the subwoofer if RCA  
outputs are present on your head unit  
or other signal source (such as a  
sound processor).  
BASS1000 Amplified Subwoofer User’s Manual - page 7  
 
Low Level Input Wiring  
Low-level (RCA) input wiring is preferred for best audio performance. Most trunk  
or hatchback installations will require a 15-20 foot RCA cable, while pickup trucks  
and under-seat installations will require a 6-12 foot RCA cable. Always use a high-  
quality cable.  
NOTE: Do not connect BOTH the high level and low level inputs from your  
receiver to your amplifier at the same time!  
POWER  
PHASE  
SHIFT  
LOW PASS  
FILTER  
BASS  
BOOST  
INPUT  
GAIN  
CONNECTIONS  
GROUND  
REMOTE  
0
180º  
50Hz 150Hz  
0
+12dB  
MIN MAX  
AMPLIFIED SUBWOOFER  
+12V  
INPUTS  
HIGH LEVEL  
REMOTE  
LEVEL  
CONTROL  
LINE  
LEVEL  
POWER STATUS  
GREEN ON  
RED PROTECTION  
L
=
=
FUSE  
R
To Audio  
Outputs of head  
unit or signal  
processor  
High Level Input Wiring  
The high level input(s) should only be used when your receiver lacks RCA outputs.  
If the RCA outputs are not present, connect the speaker outputs from the receiver  
to the high level input connector of the amplifier. Be sure to observe polarity to  
avoid audio phase problems.  
NOTE: Do not connect BOTH the high level and low level inputs from your  
receiver to your amplifier at the same time!  
POWER  
PHASE  
SHIFT  
LOW PASS  
FILTER  
BASS  
BOOST  
INPUT  
GAIN  
CONNECTIONS  
GROUND  
REMOTE  
0
180º  
50Hz 150Hz  
0
+12dB  
MIN MAX  
AMPLIFIED SUBWOOFER  
+12V  
INPUTS  
REMOTE  
LEVEL  
CONTROL  
LINE  
LEVEL  
POWER STATUS  
GREEN ON  
RED PROTECTION  
L
=
HIGH LEVEL  
=
FUSE  
R
WHITE L+  
WHITE/BLACK  
R+ GREY  
R-  
GREY/BLACK  
L-  
To Speaker Terminals  
of head unit  
BASS1000 Amplified Subwoofer User’s Manual - page 8  
 
Power Connections  
Connect the ground terminal to the closest point on the chassis of the vehicle.  
Keep this ground wire to less than 39" (100 cm) in length. Use 8 gauge (or heavier)  
wire.  
Connect the remote terminal to the remote output of the head unit using 16 gauge  
(or heavier) wire.  
Connect an empty fuse holder within 18" (45 cm) of the car battery, and run 8 gauge  
(or heavier) cable from this fuse to the amplifier location. Then connect the fuse  
holder to the "BATT+" connection on the subwoofer rear panel.  
POWER  
PHASE  
SHIFT  
LOW PASS  
FILTER  
BASS  
BOOST  
INPUT  
GAIN  
CONNECTIONS  
GROUND  
REMOTE  
0
180º  
50Hz 150Hz  
0
+12dB  
MIN MAX  
AMPLIFIED SUBWOOFER  
+12V  
INPUTS  
REMOTE  
LEVEL  
CONTROL  
LINE  
LEVEL  
POWER STATUS  
GREEN ON  
RED PROTECTION  
L
=
HIGH LEVEL  
=
FUSE  
R
FUSE  
Battery  
to REMOTE TURN-ON  
terminal of head unit  
Chassis  
ground  
point  
Remote Level Control Connection  
POWER  
PHASE  
LOW PASS  
FILTER  
BASS  
BOOST  
INPUT  
GAIN  
CONNECTIONS  
SHIFT  
GROUND  
0
180º  
50Hz 150Hz  
0
+12dB  
MIN MAX  
REMOTE  
+12V  
AMPLIFIED SUBWOOFER  
INPUTS  
REMOTE  
LEVEL  
CONTROL  
LINE  
LEVEL  
POWER STATUS  
GREEN ON  
RED PROTECTION  
L
=
HIGH LEVEL  
=
FUSE  
R
Remote  
Level Control  
Install the remote control securely  
under the dash or in a similar  
location where using it will not  
distract the driver.  
BASS1000 Amplified Subwoofer User’s Manual - page 9  
 
Troubleshooting  
If you experience operation or performance problems with this product, compare your  
installation with the electrical wiring diagram on the previous pages. If problems persist,  
read the following troubleshooting tips which may help eliminate the problems.  
SYMPTOM  
POSSIBLE REMEDY  
Check to make sure you have a good ground connection.  
Check that the Remote Input (Turn-On) has at least 3VDC.  
Check that there is battery power on the (+) terminal.  
Check that there is at least 12v.  
Amplifier will not  
power up.  
Check all fuses, replace if necessary.  
Make sure that the Protection LED is not illuminated. If it is lit, shut off  
the amplifier briefly, and then repower it.  
Check for short circuits on speaker leads.  
Protection LED  
comes on when  
amplifier is  
Turn down the volume control on the head unit to prevent overdriving.  
Remote speaker leads, and reset the amplifier. If the Protection LED still  
comes on, then the amplifier is faulty and needs servicing.  
powered up.  
Check that all fuses are OK.  
No output.  
Check that unit is properly grounded.  
Check that the Remote Input (Turn-On) has at least 3VDC.  
Check that the RCA audio cables are plugged into the proper inputs.  
Check all speaker wiring.  
Reset the Level Control.  
Low output.  
Check the Crossover Control settings.  
Disconnect all RCA inputs to the power sub’s control panel. If the hiss  
disappears, then plug in the component driving the amplifier and unplug  
its inputs. If the hiss disappears at this point, go on until the faulty/noisy  
component is found.  
High hiss in the  
sound.  
It is best to set the amplifier's input level control as low as possible. The  
best subjective signal-to-noise ratio is achieved in this manner. Try to  
set the head unit as high as possible (without distortion) and the amp  
input level as low as possible.  
Check for improperly grounded RCA interconnects.  
Squealing noise  
is present.  
Check that the Input Level Control is set to match the signal level of the  
head unit. Always try to set the Input Level as low as possible.  
Distorted sound.  
Check that all crossover frequencies are properly set.  
Check for short circuits on the speaker leads.  
Check that the minimum speaker impedance for the amp model is correct.  
Amplifier gets  
very hot.  
Check that there is good air circulation around the amp. In some  
applications, it may be necessary to add and external cooling fan.  
This is usually caused by poor quality RCA cables,which can pick up  
radiated noise. Use only the best quality cables, and route them away  
from power cables.  
Engine noise  
(static type)  
Check that the RCA grounds are not shorted to the vehicle chassis.  
Check that the head unit is properly grounded.  
Engine noise  
(alternator  
whine)  
BASS1000 Amplified Subwoofer User’s Manual - page 10  
 
Specifications  
12” Amplified Subwoofer  
MODEL  
BASS1000  
Maximum power  
RMS power  
1000W  
500W  
THD  
<0.4%  
Signal-to-noise ratio  
Frequency response  
Input sensitivity, high level  
Input sensitivity, low level  
Low pass filter  
Bass Boost  
>90dB  
20Hz - 150Hz  
110mV  
0.5V  
50Hz -150Hz  
0 to +12dB  
25A  
Fuse rating  
Dimensions  
14.2” x 14.2” x 12.2”  
All specifications subject to change without notice.  
BASS1000 Amplified Subwoofer User’s Manual - page 11  
 
Notes  
 

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