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PowerBass RTA-112 - User Manual

PowerBass RTA-112
20 pages
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Amplified Bass System
Application Guide
Please read through this manual to familiarize yourself with your new speakers. Should your PowerBass
Autosound speaker system ever require service, you will need to have the original dated receipt.
RTA-110
RTA-112

Questions and Answers

  • K
    Kelly SchroederAug 1, 2025
    What to do if Power LED lights RED, but there is no output from my PowerBass Amplifier?
    • D
      Dominique EwingAug 2, 2025
      If the Power LED lights red but there is no output from your PowerBass Amplifier, check the RCA connections. Test the speaker outputs using a known good speaker. Substitute a known good source unit. Check for a signal on the RCA cable with a VOM in the AC position.
  • P
    phillipszacharyAug 9, 2025
    How to improve bass response on my PowerBass RTA-112 Amplifier?
    • A
      Antonio JonesAug 9, 2025
      To improve poor bass response on your PowerBass Amplifier, check the speaker polarity and reverse the connection of one speaker only, using the amplifier's PHASE switch.
  • A
    Ashley HamiltonAug 17, 2025
    Why does the volume reduce automatically on my PowerBass RTA-112 Amplifier when the power LED is red?
    • M
      Manuel ReidAug 17, 2025
      If your PowerBass Amplifier's power LED lights red but the volume reduces automatically, it means the advanced protection circuitry is engaging due to the amplifier's high internal temperature, which can be caused by an incorrect input sensitivity level. Ensure the amplifier has better airflow around its chassis, consider relocating it to a more ventilated spot, and reset the GAIN control.
  • K
    karen88Aug 25, 2025
    How to fix alternator noise in my PowerBass Amplifier?
    • R
      Richard Pennington MDAug 26, 2025
      To address alternator noise that varies with RPM in your PowerBass Amplifier, check for a damaged RCA cable and its routing. Also, ensure the source unit has a good ground connection. If the amp gain setting is too high, turn it down.

Summary

Powerbass Amplified Bass System Features

Built-in High Powered Amplifier

Describes the integrated Class A/B monaural amplifier with controls for sonic integration.

Heavy-duty Box Design

Details the non-resonant enclosure construction, bracing, sealing, and vinyl covering.

Bass Reflex Single Port System

Explains the Bass Reflex design with a flared Venturi port for efficient tuning and tight bass.

Remote Subwoofer Level Control

Describes the wired remote for bass level adjustment, offering 0-12dB gain at 45Hz.

Polypropylene Cone with Rubber Surround

Highlights the cone material for moisture resistance and rubber surround for excursion.

KSV High Temperature Voice Coil

Details the 2-inch KSV voice coils for high power handling and thermal heat dissipation.

Additional Features

Mentions vinyl enclosure, professional mounting hardware, and wiring harness.

Specifications for RTA Series Subwoofer System

Unpacking the Enclosure

Installation Experience

Enclosure Placement Tips and Recommendations

Connections to Amplifier

BATT+, GND and REM

Explains necessary terminals for power, ground, and remote connections to the amplifier.

Enclosure Dimensions and Specifications

RTA Amplifier Control Panel Layout

Low Input (RCA) Jacks

Describes RCA inputs for line-level audio sources with a minimum output of 500mV.

Phase Switch

Explains the switch to reverse speaker output phase (0° or 180°) for optimal bass.

High Input

Details the 4-pin Molex jack for direct connection to factory radio speaker leads.

Remote Level (RJ45 Jack)

Connector for the wired remote to adjust bass level from the driver's seat.

GND (Ground Input Connection)

Explains the importance of a solid ground connection to the vehicle chassis.

REM (Remote)

Terminal to turn the amplifier on/off via a 12V source like ignition or remote output.

BATT+ (12 Volt Positive)

Main power input terminal, must connect directly to the battery positive.

LPF (Low Pass Filter) Control

Adjustable crossover point (50Hz-200Hz) for low frequencies.

Bass EQ Control

Boosts low frequencies (up to +12dB) centered at 45Hz for enhanced bass.

Gain Control

Matches amplifier input sensitivity to the source unit's output level.

Power Indicator

Red LED that lights up when the system is powered on.

Fuse

Protects the amplifier from over current; specifies fuse ratings for models.

Power Wiring and Signal Connections

Power Connection

Details wiring the amplifier directly to the vehicle battery with an 8ga cable and inline fuse.

REM

Explains wiring the remote turn-on lead from the radio or ignition.

GND

Describes connecting the amplifier ground to the vehicle chassis using a suitable gauge cable.

Input Signal

Choosing the High or Low Inputs

Explains selection between high-level speaker outputs or low-level RCA outputs.

High Level Input Connections

Guide for splicing into factory speaker outputs using the provided 4-pin harness.

Low Level Input and RCA Interconnect Wiring

Set Up Adjustments

Input Gain Control

Steps to match amplifier input level to the head unit output to prevent distortion.

LPF (Low Pass Filter) Crossover Adjustment

Guidance on adjusting the crossover frequency by ear for optimal bass blend.

Setting the Phase Switch

How to select the optimal phase setting (0° or 180°) for best bass response.

Bass EQ Adjustment

How to use the Bass EQ control for boosting low frequencies and its potential impact.

Remote Level Controller

Break In Period

Troubleshooting Tips

We Want You Listening For A Lifetime

Warranty Notes

Explains what PowerBass will replace under warranty and what is not covered.

Powerbass Autosound Limited Warranty Policy

PowerBass RTA-112 Specifications

General IconGeneral
BrandPowerBass
ModelRTA-112
CategoryAmplifier
LanguageEnglish

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