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Quantum Audio QZA4400.4 User Manual

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LIMITED WARRANTY
T e l : 9 5 6 -4 2 8 -4 2 6 3 F a x : 9 5 6 -4 2 1 -4 5 1 3
w w w .q u a n tu m a u d io .n e t
MOSFET POWER AMPLIFIERS
Owner's Manual
tel: (956) 428-4263 fax: (956) 421-4513
www.quantumaudio.net
Quantum Audio warrants any products purchased in the U.S.A.
from an authorized Quantum Audio dealer. All products are warranted
to be free from defects in material and workmanship under normal use
and service for a period of one (1) year. This warranty applies to the
original purchase only.
Quantum Audio will either repair or replace (as its option) any
unit that has been found to be defective and under warranty provided
the defect occurs within the one (1) year warranty period.
This limited warranty does not extend to units have been
subjected to misuse, abuse, neglect, or accident. In Quantum Audio’s
judgment, products that show evidence of having been altered, modi-
fied, or serviced without Quantum Audio’s authorization, will be
ineligible under this warranty.
To obtain warranty service please contact your retailer or visit
our website at www.dbdrive.net for more details.
QZA4400.4 QZA4800.4
QZA2100D QZA3100D QZA410OD
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Quantum Audio QZA4400.4 Specifications

QZA2100D

Output Power IconOutput Power
output_power_1_ohm1 x 2000W
output_power_2_ohm1 x 1000W
rated_output_power_1_ohm1 x 600W
Frequency and Signal IconFrequency and Signal
frequency_response10Hz - 150Hz
signal_to_noise_ratio>90dB
total_harmonic_distortion<.05%
Input and Crossover IconInput and Crossover
low_input_level285mV - 6V
crossover_frequency40Hz - 150Hz
crossover_slope12dB
Additional Features IconAdditional Features
bass_eq18dB @ 45Hz
subsonic_filter15Hz - 55Hz
bass_remoteYes
Power IconPower
input_voltage11.2V - 14.4V

QZA3100D

Output Power IconOutput Power
output_power_1_ohm1 x 3000W
output_power_2_ohm1 x 1500W
rated_output_power_1_ohm1 x 900W
Frequency and Signal IconFrequency and Signal
frequency_response10Hz - 150Hz
signal_to_noise_ratio>90dB
total_harmonic_distortion<.05%
Input and Crossover IconInput and Crossover
low_input_level285mV - 6V
crossover_frequency40Hz - 150Hz
crossover_slope12dB
Additional Features IconAdditional Features
bass_eq18dB @ 45Hz
subsonic_filter15Hz - 55Hz
bass_remoteYes
Power IconPower
input_voltage11.2V - 14.4V

QZA4100D

Output Power IconOutput Power
output_power_1_ohm1 x 4000W
output_power_2_ohm1 x 2000W
rated_output_power_1_ohm1 x 1200W
Frequency and Signal IconFrequency and Signal
frequency_response10Hz - 150Hz
signal_to_noise_ratio>90dB
total_harmonic_distortion<.05%
Input and Crossover IconInput and Crossover
low_input_level285mV - 6V
crossover_frequency40Hz - 150Hz
crossover_slope12dB
Additional Features IconAdditional Features
bass_eq18dB @ 45Hz
subsonic_filter15Hz - 55Hz
bass_remoteYes
Power IconPower
input_voltage11.2V - 14.4V

QZA4400.4

Output Power IconOutput Power
output_power_4_ohms4 x 100W
output_power_2_ohms4 x 200W
bridged_output_power_4_ohms2 x 1000W
Frequency and Signal IconFrequency and Signal
frequency_response10Hz - 25KHz
signal_to_noise_ratio>90dB
total_harmonic_distortion<.05%
Input and Crossover IconInput and Crossover
low_input_level285mV - 6V
crossover_frequency_low30Hz - 150Hz
crossover_frequency_high10Hz - 1.2KHz
Additional Features IconAdditional Features
crossover_slope12dB
bass_eq18dB @ 45Hz
input_voltage11.2V - 14.4V

QZA4800.4

Output Power IconOutput Power
output_power_4_ohms4 x 200W
output_power_2_ohms4 x 400W
bridged_output_power_4_ohms2 x 1200W
Frequency and Signal IconFrequency and Signal
frequency_response10Hz - 25KHz
signal_to_noise_ratio>90dB
total_harmonic_distortion<.05%
Input and Crossover IconInput and Crossover
low_input_level285mV - 6V
crossover_frequency_low30Hz - 150Hz
crossover_frequency_high10Hz - 1.2KHz
Additional Features IconAdditional Features
crossover_slope12dB
bass_eq18dB @ 45Hz
input_voltage11.2V - 14.4V

Summary

Limited Warranty

Quantum Audio Warranty

Warranty details for products purchased in the U.S.A. from authorized dealers.

Warranty Coverage

Covers defects in material and workmanship for one year under normal use.

Exclusions from Warranty

Excludes units subjected to misuse, abuse, neglect, accident, or unauthorized modifications.

Obtaining Warranty Service

Contact retailer or visit website for warranty service details.

Product Line

MOSFET Power Amplifiers

Identifies the product category as MOSFET power amplifiers.

Owner's Manual

Designates this document as the owner's manual for the amplifiers.

Introduction and Preparation

Welcome and Product Appreciation

Congratulates user on purchase and highlights appreciation for fine musical reproduction.

Sales Receipt Management

Advises attaching the sales receipt for warranty service purposes.

Installation Recommendations

Recommends professional installation by an authorized retailer for optimal performance.

Manual Update Information

Recommends checking the website for the latest product information.

Safety Precautions

Power Wire Fusing

Fuse power wire within 12" of the battery to protect the car's battery.

Wire Connector Quality

Use high-grade connectors for maximum power transfer and secure connections.

Wire Routing Safety

Route wires under carpet/panels to avoid damage and ensure clean installation.

Mounting Safety

Exercise caution when mounting to avoid puncturing vehicle lines or the gas tank.

Signal Wire Separation

Run signal wires away from electrical wires to prevent induced noise.

Ground Wire Best Practices

Keep ground wires short and ground all units at the same point to reduce noise.

Wire Edge Protection

Avoid sharp edges when running wires; use grommets for protection.

Hearing Safety Warning

High power systems can cause hearing loss; listen at safe levels.

Features and Benefits

DC Offset Protection

Protects speakers from DC voltage at the output stage by shutting down the amplifier.

Short Circuit Protection

Protects the amplifier from shorts in speakers or wiring by shutting it down.

Thermal Protection

Shuts down the amplifier when it reaches excessively high temperatures to cool off.

Power Indicator

Diagnostic LED illuminates when the amplifier is on and receiving power.

Built-in Crossover

Features variable crossover for low-pass and high-pass filtering for specific models.

Distribution Blocks

Heavy gauge blocks for maximum power/signal transfer with minimal resistance.

Bass Boost Feature

Variable 0-12 dB bass boost at 45Hz for enhanced low frequency performance.

Line Out Functionality

Full range line outputs for connecting additional amplifiers, buffered to reduce signal loss.

Power Fusing

Protects the amplifier against short circuits and excessive current.

Remote Turn-on Operation

Automatically turns amplifier on/off with the head unit, also resets protection circuits.

Adjustable Input Sensitivity

Allows fine-tuning of level matching between the source and the power amplifier.

Low Impedance Stability

Lists impedance stability for different amplifier models (e.g., 1 Ohm Mono, 2 Ohm Stereo).

Installation: Power and Mounting

Mounting Location Guide

Guidance on selecting a mounting location for the amplifier, emphasizing ventilation.

Mounting Procedure

Instructions on marking and drilling holes for mounting the amplifier.

Connecting Amplifier Power

Instructions for connecting the amplifier's power to the car battery.

Grounding the Amplifier

Connect the amplifier's ground terminal to the car chassis.

Remote Turn-On Connection

Connects the amplifier's remote turn-on to a 12V source for operation.

Signal and Speaker Connections

Connecting RCA Inputs

Connects RCA outputs from the head unit to the amplifier's RCA input terminals.

Signal Wire Routing Caution

Run signal wires away from electrical wires to avoid induced noise.

Speaker Wire Gauge

Use at least 16 gauge speaker wire for connections.

Speaker Phasing

Ensure proper phasing (positive to positive, negative to negative) for optimal bass response.

Parallel Speaker Terminals

Amplifier speaker terminals are internally paralleled for easier multi-woofer connections.

Subwoofer Connection Diagrams

Diagrams showing single and dual subwoofer connections (1 Ohm Minimum).

Impedance Caution

Caution against loads below 1 Ohm to prevent overheating and damage.

Speaker Connections: Bridged Mode

Bridged Configuration Explained

Explains bridging for mono output to drive a subwoofer or center channel.

Bridged RCA Connections

Both right and left RCA connections must be made for bridged mode.

Bridged Impedance Warning

Caution against loads below 4 Ohms in bridged mode to prevent damage.

4 Channel Bridged Diagram

Diagram illustrating 4 channel bridged connections (4 Ohm Minimum).

Stereo Mode Impedance Warning

Caution against loads below 2 Ohms in stereo mode to prevent overheating.

System Tuning and Controls

Remote Bass Control Module

Guidance on mounting the remote module and running its control wire away from electrical noise.

Crossover Network Operation

Details the built-in variable crossover for selecting low-pass or high-pass filters.

Crossover Point Selection

Advises selecting crossover points based on speaker operating range.

Bass Boost Adjustment

Explains the bass boost feature, adjustable from 0 to 12 dB at 45Hz.

Input Sensitivity Adjustment

Guides on adjusting input gain to match source output without distortion.

Level Matching Procedure

How to set gain for maximum output without distortion at ~3/4 volume.

Distortion Avoidance

Warning against overdriving speakers to prevent permanent damage.

Troubleshooting and Specifications

Common Problem Causes

States most problems are due to improper installation, not equipment failure.

Troubleshooting: No Output

Lists causes and solutions for 'No Output' issues.

Troubleshooting: Low Output

Lists causes and solutions for 'Low Output' issues.

Troubleshooting: Engine Noise

Lists causes and solutions for 'Engine Noise' issues.

Troubleshooting: Protection LED

Lists causes and solutions when the 'Red Protection L.E.D. Illuminated'.

Specifications (QZA2100D/3100D/4100D)

Detailed technical specifications for specific amplifier models.

Specifications (QZA4400.4/4800.4)

Detailed technical specifications for other amplifier models.

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