BOSS AVA-1404 7 Band Graphic Equalizer User Manual

: June 17, 2024
: Boss

Table of Contents

BOSS AVA-1404 7 Band Graphic Equalizer
Controls and features
How an equalizer is used
Turning on the power
Setting system Power output levels
System applications
Installation
Specifications
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BOSS AVA-1404 7 Band Graphic Equalizer

BOSS-AVA-1404-7-Band-Graphic-Equalizer-PRODUCT

3451 LUNAR COURT, OXNARD . CA 93030
800 . 999 . 1236 • www.bossaudlo.com

NOTICE
This (th<:88) equ1pment(s) is (are) in conformity with the pmvislo11S of EMC Directives 89/336/EEC 92/31/EEC and 93/68/EEC.

Introduction
Congratulations on your purchase of a Graphic Equalizer. This product has been designed and built to deliver excellent sound quality and long-lasting high performance. We are sure you’ll enjoy listening to your favorite music with this component in your car audio system.

For best results please consult a professional car stereo installer for application advice or troubleshooting. To guarantee best performance, we recommend using Link Installation accessories, such as RCA Interconnects, power cables and speaker wire. Thank you for choosing products for your auto sound system.

Controls and features

BOSS-AVA-1404-7-Band-Graphic-Equalizer-FIG-2

AVA-1204
7-Band Graphic Equalizer with LED Power Meter and Subwoofer Output

7 equalization bands
LED level indicators
Fader control
Subwoofer frequency crossover switch
Subwoofer level control
High level and low level inputs
Night illumination

AVA-14O4
7-Band Amplified Cradhic Equalizer with LED Power Meter an Subwoofer Output

7 equalization bands
200W power output (max. power)
LED level indicators
Fader control
Subwoofer frequency crossover switch
Subwoofer level control
High level and low level inputs
Night illumination

How an equalizer is used

A graphic equalizer is a high-fidelity audio control that allows you to graphically view and individually control a number of different frequency bands in a stereophonic system.
A typical gr~hic equalizer consists of several audio filters, each centered’at a speidflc frequency in the audio range.The AVA-1204 and AVA-1404 equalizers enable you to cut o:rc oost the
output level by up to l 2dB as desired at the following frequencies:

60Hz
150Hz
400Hz
1 kHz
3kHz
6kHz
15kHz

Turning on the power

The AVA-1204 and AVA-1404 have internal ON/OFF circuitry that responds to tu ming ON or OFF the head unit of your car audio system. This requires that your head unit have a remote turn-on lead available on the rear panel (which most head units have). With this convenient remote turn-on/off feature, you never have to worry about turning off the power to the equalizer when you shut off the audio system.

Setting system Power output levels

The AVA-1204 and AVA-1404 do not have Volume Level controls, Therefore, all of your audio system level controls are made at the head unit or, in the case of the subwoofer output, at the amplifier (or its remote control unit) dedicated to the subwoofer channel. In the case of the amplified model AVA-1404, the amplifier In the equalizer unit adds a very large power boost! So when you first turn on the system, be sure your head unit volume control is set at the minimum level. Then you can raise it slowly to see the effea the new equalizer has on the overall system volume level.

System applications

The AVA· l 204 and AVA· I 404 are intended for different applications. Please read the descriptions below (and the wiring diagrams that follow) to be sure you are using the product suited best to your car audio system.

AVA-1204 7-Band Equalizer with Subwoofer Output
The AVA-1204 is a signal processor/preamplifier. It is intended for use in a car audio system which includes amplifiers in the signal path AFTER the equalizer and provides Front, Rear and Subwoofer LOW LEVEL outputs via RCA connectors.

A stereo input signal is applied to the equalizer using EITHER (but not both) the low-level RCA inputs (from head unit Line Out) or from high-level inputs (head unit speaker level outputs).
The user adjusts the various boost/cut levels at the desired frequencies.
The resulting adjusted signal is then distributed from the Front, Rear and Subwoofer stereo RCA jacks on the rear of the unit to an amplifier for each of these channel pairs.

AVA-1404 7-Band Amplified Equalizer with Subwoofer Output

The AVA· 1404 combines the functions of a graphic equalizer AND a powerful 4-channel amplifier.
It is intended for use in car audio systems where the output signal from the head unit alone is not adequate to drive the speakers in a four-channel speaker system, AND there is no additional amplifier(s) present for the Front and Rear channels.
A stereo input signal is applied to the equalizer using EITHER (but not both) the low level RCA inputs (from head unit Line Out) or from high level inputs (head unit speaker level outputs). The user adjusts the various boost/ cut levels at the desired frequencies.
The AVA-1404 adds amplification of 200 watts (max power) to the equalizer speaker outputs for the Front and Rear channels. These must be connected to your speaker system as shown in the wiring diagram. PLEASE NOTE: You CANNOT connect the Front and Rear outputs of this equalizer to the inputs of any amplifier!
The Subwoofer channel is not amplified, so if you wish to use the equalizer’s stereo subwoofer outputs (a low level outputs provided via a stereo RCA jack on the rear), you must connect an additional amplifier(s) in order to drive the subwoofer.

Installation

Mowdlng the equallaer

The AVA-1404 and AVA-1 404 are designed to be installed to the underside of yout vehicle dashboard or other similar surface using the scre~s and brackets are provided. Install the unit securely, according to the diagram below.

Electrical connections

AVA-1204 7-Band Equalizer with Subwoofer Output

Review the diagram below and connect the unit as shown. Please note that this equalizer contains an internal ON/OFf switch, which is activated when the head unit is turned on. For this reason, ill order to use this equalizer, your head unit must have a remoteturn on lead.

BOSS-AVA-1404-7-Band-Graphic-Equalizer-FIG-4

Electrical connections

AVA-1404 7-Band Amplified Equalizer with Subwoofer Output
Review the diagram below and connect the unit as shown. Please note that this equalizer contains an internal ON/OFF switch, which is activated when the head unit is turned on. For this reason in order to use this equalizer, your head unit must have a remote-turn on lead.

AVA-1404 Wiring diagram

BOSS-AVA-1404-7-Band-Graphic-Equalizer-FIG-5

NOTE:

The amplifier in the equalizer unit adds a very large power boost to the sound at your speakers!
Therefore, when you first turn on the system, be sure your head unit volume control is set at the minimum level. A sudden, excessive burst of sound can damage your speaker system.
Then you can raise it slowly to see the effect the added amplification has on the overall volume level.