Rockville dB25 User Manual

OWNER’S MANUAL
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Rockville dB25 Specifications

General

Frequency Response	10Hz - 220Hz
Dimensions	7.1" x 4.5" x 1.7"
Input Impedance	10k Ohms
Impedance	2 Ohm, 4 Ohm
Input Sensitivity	0.2V-6V
Phase Shift	0-180 degrees

Summary

Introduction

Important Safety Instructions

Crucial safety guidelines for operating the amplifier, emphasizing hearing protection and electrical safety.

Warning: Be Aware!

Warning about potential hearing damage from prolonged high volume use and the importance of traffic sound awareness.

Safety Precautions

Features

Power and Protection Circuitry

Describes the IC-controlled protection circuitry, LED status indicators, and thermal/speaker short circuit protection.

Features (Continued)

DC Offset Protection

Details circuit protection against DC voltage at speaker terminals and the reset procedure.

Installation

Installation Basics

General advice on disconnecting the battery, system design, and amplifier mounting location considerations.

Mounting the Amplifier

Wiring

Remote Turn On Connection

Explains the remote turn-on connection for amplifier power control via the head unit.

Power and Ground Wiring

Details recommended wiring harness construction, fuse placement, gauge selection, and ground connection importance.

Settings

Adjusting the System

Step-by-step guide for setting crossover points, bass equalizer, and input sensitivity (LEVEL control).

Using the Electronic Crossover - 4 Channel Models

Settings (Continued)

Setting the Controls: Audio Preamp Input

Details setting RCA preamp inputs, using shielded cables, and routing RCA cables.

Using the Built-in Low Pass Electronic Crossover

5 Channel Amp with 2 Channel Input

5 Channel Amp with 4 Channel Input

5 Channel Amp with 5 Channel Input

5 Channel Amp Speaker Wiring

Basic 4 Channel Configuration

4 Channel Amp Bridged to 2 Channels

4 Channel Amp in 3 Channel Mode

4 Channel with Mixed Mono

4 Channel Amp with Dual Mixed Mono Configuration

Class D Monoblock 2 Ohm Amplifier

Twin Amp Bridging

Twin Amp Bridging (Diagram)

Twin Amp Bridging (Wiring Example)

Speaker Wiring Guide

4 X Dual VC 8 Ohm Speakers in Parallel

Illustrates wiring four dual voice coil 8 ohm speakers in parallel to achieve a 2 ohm load.