DLS ULTIMATE A1 User Manual

How to install and
operate the
DLS ULTIMATE
A-series amplifiers
A1, A2, A3, A4, A5,
A6, A7 & A8
Welcome!
This owners manual is written in easy english and
uses a lot of drawings to simply the installation and
use of the above amplifiers.
Your DLS amplifier must be installed correctly in
order to work well. This manual will show you how
to install the amplifier like a pro. Please read the
entire manual before beginning the installation.
Install the amplifier yourself if you feel confident with
our instructions and if you have the proper tools.
However if you feel unsure, turn over the installa-
tion job to someone better suited to it.
Warranty Service
This amplifier is covered by warranty, depending
on the conditions in the country where it is sold. If
the amplifier is returned for service, please include
the original dated receipt with the product.


 Technical Assistance
For technical assistance ask the shop where the product
was sold, or the distributor in your country.
You can always phone the DLS Helpdesk in Sweden
+ 46 31 84 00 60 or send an e-mail to info@dls.se.
Information can also be found on our WEB-site
www.dls.se
Contents
Caution………………………..…….. 2
Installation…………………….……. 2
Tools and materials needed………. 3
Amplifier installation kit………….... 3
Routing Wires…………………….... 3
Wiring
Power terminals.....……………..…. 4
Inputs and controls…….…………... 5
Input wiring................................... 5
Input level control.......................... 5
Phase control................................ 5
Remote bass level......................... 5
Protection circuits.......................... 5
Input & controls A7…………........... 6
Crossovers / filters………………..... 7
Crossovers / filters A7.................... 8
Professional tips............................ 9
Wiring examples:
DLS A1 & A2................................. 10-11
DLS A3......................................... 12-13
DLS A4......................................... 14-16
DLS A5......................................... 17
DLS A6......................................... 18
DLS A7......................................... 19-22
DLS A8......................................... 23-24
Testing……………………………….. 25
Trouble-shooting…………………….. 25
Specifications………………………... 26-27
Approval of electromagnetic compatability
according to the EEC Directive 95/54/EC for
DLS A1, A2, A3, A4, A5, A6, A7 & A8.
E 11 Approval No: 10R-020962

DLS ULTIMATE A1 Specifications

General

Amplifier Class	Class D
Number of channels	1
Remote bass level control	Yes
Total Harmonic Distortion	<0.1%
Input sensitivity	0.2V - 6V
Phase shift	0 - 180 degrees
Dimensions (W x D x H)	290mm x 230mm x 55mm
Dimensions	290mm x 230mm x 55mm
Frequency range	10Hz - 250Hz
Subsonic filter	10Hz - 50Hz, 24dB/octave
Frequency Response	10Hz - 250Hz

Summary

Installation Guide

Installation Preparation

Essential steps before installation: read manual, select location, and disconnect battery.

Wiring

Power, Remote, and Fan Terminals

Connection details for power supply, remote turn-on, and fan terminals across DLS amplifier models.

Grounding and Fuse Requirements

Guidelines for proper chassis grounding and fuse selection for amplifier safety and performance.

Input and Controls

Input Wiring and Level Adjustment

How to connect RCA inputs and set input level for optimal sound matching.

Phase and Remote Control Features

Explanation of phase control and remote bass level/phase shift functionality.

Amplifier Status Indicators

Interpreting Power (blue) and Protect (red) lights for amplifier operational status.

Crossovers / Filters

General Crossover Functionality

Overview of highpass, lowpass, and subsonic filters and their use in audio systems.

Model-Specific Filter Settings

Detailed filter configurations and capabilities for DLS amplifier models A1 through A8.

DLS A7 Filter Configurations

Specific filter settings for DLS A7's front, rear, and sub channels for flexible audio routing.

Wiring Examples DLS A1 & A2

Stereo Speaker Connections

Connecting DLS A1/A2 for stereo sound with one or two speaker pairs.

Mono Subwoofer Connection

Wiring DLS A1/A2 for a single subwoofer in mono bridge mode.

Wiring Examples DLS A3

Stereo System Setup

Connecting DLS A3 for a stereo system with front and rear speakers.

Mono Subwoofer Setup

Wiring DLS A3 for one or more subwoofers in mono bridge mode.

Wiring Examples DLS A4

Stereo Front & Mono Subwoofer

Connecting DLS A4 for stereo front speakers and a mono subwoofer.

Four-Channel Stereo Bridge Mode

Wiring DLS A4 in stereo bridge mode across all four channels.

3-Way System Active Crossover

Connecting DLS A4 for a 3-way system with active crossover between woofer and midrange.

Wiring Examples DLS A5

Stereo Front & Mono Subwoofer Setup

Example connection for DLS A5 with a front stereo system and a mono subwoofer.

Wiring Examples DLS A6

Dual Subwoofer Connection

Wiring example for DLS A6 connecting two 4 ohm subwoofers.

Wiring Examples DLS A7

Front, Rear, and Subwoofer Configuration

Connecting DLS A7 for front speakers, rear fill, and subwoofer(s).

Active Crossover to Front System

Wiring DLS A7 with active crossover for front speakers and subwoofer.

3-Way Front System with Crossover

Wiring DLS A7 for a 3-way front system using crossovers and a subwoofer.

Wiring Examples DLS A8

Front and Rear Speaker Setup

Connecting DLS A8 for front and rear speakers with specified filter settings.

Front System and Subwoofer Setup

Wiring DLS A8 for a front system and subwoofer, with filter adjustments.

Subwoofer Bridge Mode

Connecting DLS A8 subwoofers in bridge mode to front and rear channels.

Testing

Post-Installation Testing

Procedures for testing power, speakers, and battery reconnection after installation.

Troubleshooting

Amplifier Problem Diagnosis

Troubleshooting steps for common issues like no power, overheating, or no sound from speakers.