Boss BASS1200 - User Manual

1. Find a suitable location in the vehicle
in which to mount the amplifier. A
typical location is shown below:
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. Make a
small mark to identify the position and
remove the unit.
Thoroughly clean the area you plan to
attach the subwoofer, using a vacuum
cleaner.
Then attach the supplied double
adhesive tape, and put the subwoofer
in the place and press down on it
securely.
Troubleshooting
BASS1200 Amplified Subwoofer User’s Manual - page 11
Specifications
BASS1200 Amplified Subwoofer User’s Manual - page 12
BASS1200 Amplified Subwoofer User’s Manual - page 6
BASS1200 Amplified Subwoofer User’s Manual - page 2
Introduction
BASS1200 Amplified Subwoofer User’s Manual - page 9
CONTENTS
BASS1200 Amplified Subwoofer User’s Manual - page 1
U S E R ’ S M A N U A L
BASS1200 Amplified Subwoofer User’s Manual - page 5BASS1200 Amplified Subwoofer User’s Manual - page 3
BASS1200 Amplified Subwoofer User’s Manual - page 4
BASS1200 Amplified Subwoofer User’s Manual - page 10
BASS1200 Amplified Subwoofer User’s Manual - page 7
Front panel controls and features
BASS1200 Amplified Subwoofer User’s Manual - page 8
Rear panel controls and features
Mounting the subwoofer
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.
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.
Protection LED
comes on when
amplifier is
powered up.
Check for short circuits on speaker leads.
Turn down the volume control on the head unit to prevent overdriving.
Remove speaker leads, and reset the amplifier. If the Protection LED still
comes on, then the amplifier is faulty and needs servicing.
High hiss in the
sound.
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.
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.
Squealing noise
is present.
Check for improperly grounded RCA interconnects.
Distorted sound.
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.
Check that all crossover frequencies are properly set.
Check for short circuits on the speaker leads.
Amplifier gets
very hot.
Check that the minimum speaker impedance for the amp model is correct.
Check that there is good air circulation around the amp. In some
applications, it may be necessary to add and external cooling fan.
Engine noise
(static type)
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
(alternator
whine)
Check that the RCA grounds are not shorted to the vehicle chassis.
Check that the head unit is properly grounded.
5. 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.
6. Insert a 30A fuse into the battery fuse
holder.
7. Recheck all connections before
powering up the subwoofer.
8. Set all level controls to minimum
position, and set all crossover
controls/switches to the desired
frequency points.
9. 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.
10. Further fine tuning of the various
controls may be necessary to obtain best
results.
Vehicle seat
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.
Install the remote control securely under the
dash or in a similar location where using it will
not distract the driver.
To Audio
Outputs of head
unit or signal
processor
2 Introduction
2 What is included?
2 Features
3 General precautions
4 Protection circuitry
4 Installation precautions
4 Fuses
5 Mounting the subwoofer
5 Connecting the subwoofer
7 Front panel controls and features
8 Rear panel controls and features
9 Input wiring
10 Power connections
10 Remote level control connection
11 Troubleshooting
12 Specifications
Congratulations on your
purchase of a BASS1200
Amplified Subwoofer.
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.
Thank you for making a
your choice for car audio
entertainment!
All specifications subject to
change without notice.
page
BASS1200
10” Low Profile
Amplified Subwoofer
MODEL
10” Amplified Subwoofer
SYMPTOM POSSIBLE REMEDY
30A FUSE
IN FUSEHOLDER
WHITE GREY
GREY/BLACK

Summary

Introduction to BASS1200 Subwoofer

What is Included in the Package

Lists items included in the BASS1200 amplified subwoofer package for verification.

Key Features of the BASS1200

Details the main features and technical capabilities of the BASS1200 amplified subwoofer.

General Safety Precautions

Amplifier Protection Circuitry Explained

Explains the amplifier's protection features and the meaning of the PROTECT LED indicator.

Safe Installation Guidelines

Understanding Fuse Protection

Explains the role of fuses, their rating, and proper replacement procedures for safety.

Mounting the Subwoofer

Connecting the Subwoofer

Warning on Level Control Usage

Warns users not to confuse the input level control with a volume control for proper setup.

Front Panel Controls and Features Overview

Remote Level Control Port

Port for connecting the remote control to adjust subwoofer volume independently.

Input Gain Control Adjustment

Adjusts the input signal level to match the source, preventing distortion.

Subsonic Filter Function

Filters out low-frequency noise and rumble to improve sound quality.

Bass Boost Feature

Increases the sound level in the bass frequencies for enhanced bass response.

Low Pass Filter Setting

Sets the upper frequency limit for the subwoofer to reproduce.

Phase Shift Compensation

Compensates for time alignment issues between the subwoofer and other speakers.

Auto Turn-On Switch Operation

Controls whether the subwoofer powers on automatically with the head unit.

Power Status LED Indicator

Indicates power status (green) or protection mode (red).

Rear Panel Controls and Connections

Power Terminal Connections

Connections for power supply: ground, remote turn-on, and +12V.

Main and Spare Fuses

Location and rating of the main and spare fuses for circuit protection.

Low Level RCA Input Usage

Recommended inputs for audio signal using RCA cables for optimal performance.

High Level Input Usage

Connects amplifier via speaker-level outputs when head unit lacks RCA.

Spare Fuse Storage

Designated location for storing a spare fuse for the unit.

Wiring Input Signals

Low Level Input Wiring Guide

Details how to connect the audio signal using RCA cables for optimal performance.

High Level Input Wiring Guide

Explains how to connect the amplifier using speaker-level outputs from the head unit.

Power and Remote Connections

Power Connection Diagram

Illustrates the proper connections for power supply: ground, +12V, and remote turn-on.

Remote Level Control Connection

Shows how to connect the remote level control for adjusting subwoofer volume.

Troubleshooting Common Issues

Amplifier Fails to Power Up

Provides steps to diagnose and resolve issues where the amplifier fails to turn on.

Protection LED Activated

Offers solutions for when the protection circuit is activated, preventing operation.

No Audio Output

Lists checks and remedies for situations where there is no sound from the subwoofer.

Low Audio Output Resolution

Suggests steps to improve the subwoofer's volume output level.

Eliminating High Hiss in Sound

Guides on how to identify and eliminate unwanted hissing noise in the audio.

Resolving Squealing Noises

Provides troubleshooting for squealing sounds, often related to grounding.

Fixing Distorted Audio Sound

Offers advice on fixing audio distortion issues, often related to gain settings.

Overheating Amplifier Solutions

Explains causes and solutions for the amplifier overheating during operation.

Addressing Static Engine Noise

Addresses static noise issues, typically caused by poor RCA cables.

Eliminating Alternator Whine Noise

Troubleshoots alternator whine, often related to grounding or cable routing.

Product Specifications

Boss BASS1200 Specifications

General

Speaker Size	12 Inches
Impedance	4 Ohms
Frequency Response	30 Hz to 150 Hz
Sensitivity	94 dB
Power Handling (Peak)	1200 Watts
RMS Power	600W
Power Handling (RMS)	600W
Peak Power	1200 Watts