Rockville dB11 User Manual

2
Thank you for purchasing this Rockville dB Mini Series amplier. Over the years, the technology used to create audio ampliers has grown by leaps and bounds. Our competition is
satised with just continuing to build the same units year after year without thought for improvement, but not Rockville. We consider it our mission to use our expertise in developing the
latest technologies and to bring you the absolute best sounding ampliers on the market and of course at a reasonable price. You will be amazed at the quality and power that these new
amps offer. We have spared no expense in designing these ampliers, creating the most rugged, reliable, powerful and best performing ampliers. In fact we are so sure of the quality we
backup every dB Mini Series amplier with one year warranty which exemplies our commitment to the end user. (See enclosed warranty card for details.) Please read this installation
guide carefully for proper use of your dB Mini Series amplier. Read this entire guide fully before attempting your installation. Should you need assistance, please call our technical help
line at 1-646-758-0144, Monday through Thursday, 9am to 10pm EST, and Fridays, 9am to 3pm EST.
WARNING: BE AWARE! Use of this amplifier at extreme high volumes for extended periods of time may cause hearing loss and or hearing damage. During periods of prolonged
high volume levels it is recommended that you use ear safety devices. Your ability to hear necessary traffic sounds will be impaired. While driving always keep your sound
volume at reasonable levels. We at Rockville want you listening for many years to come.
• When installing the amplier, secure it tightly. An unmounted amplier in your car can cause serious injury to passengers and damage to your vehicle if it is set in motion by an abrupt
driving maneuver or short stop.
• To reduce risk of electric shock, never open the unit. There are no user serviceable parts, refer service to an authorized Rockville service center.
• Do not expose this unit to any kind of moisture.
• Please ensure that the unit is situated in a properly ventilated area.
Introduction
IMPORTANT SAFETY INSTRUCTIONS

Rockville dB11 Specifications

General

S/N Ratio	>90dB
LPL (Low Pass Filter)	50Hz - 250Hz
Low Pass Filter	50Hz - 250Hz
Input Sensitivity	0.2V - 6V
Bass Boost	0-18dB @ 45Hz
Phase Shift	0-180 Degrees

Summary

Introduction

Important Safety Instructions

Essential safety guidelines and warnings for using the amplifier.

Installation

Installation Basics

Fundamental steps and precautions before beginning amplifier installation.

Mounting the Amplifier

Guidance on securely mounting the amplifier unit in the vehicle.

Wiring

Wire Connections

Detailed instructions for connecting power, ground, and remote turn-on wires.

Wire Stripping Guide

Settings

Adjusting the System

Step-by-step guide to setting amplifier gain, crossover, and EQ.

Audio Preamp Input

Using RCA cables for audio signal input to the amplifier.

Low Pass Crossover

Adjusting the low-pass filter for subwoofer frequency response.

Subsonic High Pass Filter

Using the subsonic filter to protect subwoofers from low frequencies.

Phase Shift Control

Synchronizing subwoofer phase with other vehicle speakers.

Enclosure Tuning and Subsonic Filters

Sealed Enclosures

Tuning considerations for sealed subwoofer enclosures.

Ported Enclosures

Tuning ported enclosures and setting the subsonic filter.

Input Configurations

RCA Inputs

Connecting audio source via RCA cables.

High Level Inputs

Using speaker-level inputs with auto-turn-on feature.

Output Configurations (dB10)

dB10: One Woofer

Wiring diagram for connecting a single subwoofer to the dB10 amplifier.

dB10: Two Woofers

Wiring diagrams for connecting two subwoofers to the dB10 amplifier.

Output Configurations (dB11)

dB11: One Woofer

Wiring diagram for connecting a single subwoofer to the dB11 amplifier.

dB11: Two Woofers

Wiring diagrams for connecting two subwoofers to the dB11 amplifier.

Features and Protection

Bass Equalization Circuitry

Description of the bass boost equalization circuit and its usage.

Power and Protection Circuitry

Details on amplifier protection systems and status LEDs.

Features and Specifications

Mute Circuit

Explanation of the anti-thump mute and delay circuit.

Specifications (dB10)

Technical specifications for the Rockville dB10 amplifier.

Specifications (dB11)

Technical specifications for the Rockville dB11 amplifier.

Troubleshooting

Amp Goes Into Protect Mode

Common causes and solutions for the amplifier entering protect mode.

Troubleshooting (Continued)

Amp Won't Power On

Diagnosing and fixing issues where the amplifier does not power on.

Power But No Sound

Troubleshooting steps for when the amplifier powers on but produces no sound.

Troubleshooting (Continued)

Power But No Sound (Continued)

Further diagnosis for no sound issues and amplifier clipping.

Amp is Clipping

Identifying and resolving audio distortion (clipping) in the amplifier.

Troubleshooting (Continued)

Amp is Clipping (Continued)

Advanced troubleshooting for amplifier clipping and signal noise.

Distortion, Noise, Crackling, or Hissing

Diagnosing and eliminating unwanted audio noise and distortion.

Troubleshooting (Continued)

Distortion, Noise, Crackling, or Hissing (Continued)

Further solutions for audio noise and low sound output.

Sound is Too Low

Addressing issues of low audio output volume from the amplifier.

Amp Keeps Blowing Fuses

Troubleshooting recurring main fuse blowing issues.

Troubleshooting (Continued)

Amp Keeps Blowing Fuses (Continued)

Diagnosing main and internal fuse blowing causes.

Amp Gets Very Hot

Identifying reasons for amplifier overheating and solutions.

Troubleshooting (Continued)

Amp or Powered Sub Does Not Turn Off

Resolving issues where the amplifier fails to turn off with the vehicle.

One Channel on the Amp Isn't Working

Troubleshooting a single amplifier channel that is not producing sound.