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  1. Home
  2. Discontinued Car Audio & Electronics
  3. Discontinued Car Amplifiers
  4. Discontinued Class-D Amplifiers

Discontinued Class-D Amplifiers

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Number of Channels
Each channel on an amplifier will power one speaker using a positive and negative cable. There are various types of amplifiers, each designed to power a certain number of speakers. Monoblock amplifiers, also known as single channel, are designed to power one or more subwoofers. These amplifiers often have very high power ratings. On the other hand, multi-channel amplifiers power multiple speakers, usually at lower power ratings. 2-Channel and 4-Channel amplifiers can power car speakers or low powered subwoofers. Occasionally you might see a 5 or 6-channel amplifier that can power speakers and subwoofers at the same time. The most common setup is a monoblock amp to run subwoofers and a 4-channel amp to run door speakers. Check out our Knowledge Base for more information.
Amplifier Key Features
Amplifiers can offer a diverse array of features. If you select more than one feature, then you will view amplifiers that have ALL features selected. These include speaker-level inputs that facilitate seamless integration with factory audio systems, Bluetooth connectivity suitable for ATV/UTV or Classic vehicle setups, built-in DSPs that provide enhanced control over your audio signal, and a host of other functionalities to explore.
Amplifier Class

An amplifier increases the power of the signal being fed to it by taking energy from its power supply and matching the signal but increasing its amplitude. Amplifiers use many different methods for converting these electrical signals and have been categorized into classes.

Class A/B: Greater than 50% of the input signal is amplified while the other percentage is “off”. These amplifiers have a small amount of current flowing through the output transistors all the time which almost eliminates crossover distortion. Class A/B has great sound quality but is not as efficient as class D. These amps are most commonly used to drive speakers.

Class D: Also known as switching amplifiers, class D amps have output transistors that are completely turned “on” or “off”. This means that when the transistors are on, there is almost no voltage across them but when they are off there is significant voltage but no current flowing through it which makes these amplifiers very efficient at the cost of sound quality. These amps are most commonly used to drive subwoofers.

Other Classes: You may see classes such as GH, bD, X, FD, etc. by some manufactures. These amplifiers tend to be either class A/B, D or a hybrid of the two but with improvements to their designs that can make them more efficient or offer better sound quality.
Total RMS Power Output
Total RMS power is measured by multiplying RMS power per channel by the number of channels, and is calculated at the lowest level of operating impedance.

RMS power is the amount of continuous power, measured in watts, that an amplifier produces is called RMS power. The higher the RMS figure, the louder and cleaner your music sounds.

The RMS output figure is much more accurate than the peak rating when comparing products.
Total Peak Power Output
The total peak power output is measured as the wattage per channel multiplied by the number of channels, and is calculated at the lowest level of operating impedance.

It is measured during a brief musical burst, such as a sudden drum accent. Some manufacturers display peak power ratings on the face of their products to increase the appeal.

The RMS power rating is more accurate, and we recommend using it for product comparison.
Series
Many brands group their products into series or lines of products to help customers know the level of quality (good, better, best for example). You can filter by series and the brand using our guided browsing.
Brutus Series (60)
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Minimum Impedance Unbridged
The lowest impedance the amplifier will handle when it is not bridged.
Minimum Impedance Bridged
The lowest impedance the amplifier will handle when it is bridged.
Remote bass/level controller
If the amp comes with a bass/gain remote you will be able to control the level of your bass from your dashboard. Typically bass remotes also include a 16-20 ft. wire for installation.
Sonic Certified Amplifier
Sonic Certified amplifiers have been tested by the experts at Sonic Electronix to meet or exceed the wattage ratings provided by the manufacturer. If this is marked as Yes, then you can trust the wattage ratings. If marked as No, then we have tested the amplifier and it did not meet the advertised wattage ratings. If marked as Not Tested, then the Sonic Electronix experts have not yet been able to test the amp.
Preamp Outputs
Many amplifiers are equipped with RCA preamp outputs which pass the original music signal from the source to additional amplifiers. This is known as daisy chaining because the source connects to the first amp, and the first amp connects to the second amp, etc. The advantage to daisy chaining is you only need one 2-channel RCA cable to transfer the signal from the head-unit to the amplifier, and then one additional cable for each amp being daisy chained.
Built-in Crossover

A crossover is a type of filtering system that permits only certain frequencies to play. A Low-Pass (LP) crossover allows only frequencies below its setting to get through which is good in the case of some subwoofers. A High-Pass(HP) filter allows frequencies above its setting to pass through, this is normally used on speakers.

When a crossover is set to FULL it means no filtering is added and the full frequency spectrum is allowed through the amplifier. Filtering is important because feeding a speaker frequencies it cannot reproduce effectively creates distortion.

Amp Bluetooth Connectivity
This feature will tell you if the amplifier has the capability to connect to a Bluetooth device.
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You are currently viewing discontinued products.

Power Acoustik R1-4000D

4,000W Reaper Series Class D Monoblock Car Amplifier

R1-4000D big DISCONTINUED
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Power Acoustik R1-4000D

4,000W Reaper Series Class D Monoblock Car Amplifier

• RMS: 1200W x 1 @ 4 ohm, 1500W x 1 @ 2 ohm, 2000W x 1 @ 1 ohm
• Total Peak Power: 4000W
• Military Grade PCB w/ PWM MOSFET Power Supply
• Wired remote bass level control included
• Preamp RCA outputs to daisy chain multiple amps
• Variable 12dB Low Pass, & Subsonic Crossovers

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• RMS: 1200W x 1 @ 4 ohm, 1500W x 1 @ 2 ohm, 2000W x 1 @ 1 ohm
• Total Peak Power: 4000W
• Military Grade PCB w/ PWM MOSFET Power Supply
• Wired remote bass level control included
• Preamp RCA outputs to daisy chain multiple amps
• Variable 12dB Low Pass, & Subsonic Crossovers

Pioneer GM-D9500F

800W Max Class FD 4-Channel Amplifier (Full-Range Class D)

GM-D9500F big DISCONTINUED
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Pioneer GM-D9500F

800W Max Class FD 4-Channel Amplifier (Full-Range Class D)

FD Series Class D 4-Channel Car Amplifier • 75W x 4 Chan. @ 4 Ohm • 100W x 4 Chan. @ 2 Ohm • 800W Max • 4/3/2 Channel Operation • Speaker-Level Inputs • Compression-Type Terminals • LPF • HPF

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FD Series Class D 4-Channel Car Amplifier • 75W x 4 Chan. @ 4 Ohm • 100W x 4 Chan. @ 2 Ohm • 800W Max • 4/3/2 Channel Operation • Speaker-Level Inputs • Compression-Type Terminals • LPF • HPF

MTX Audio TC6001

1800W Max, Class D MonoBlock Amplifier

TC6001 big DISCONTINUED
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MTX Audio TC6001

1800W Max, Class D MonoBlock Amplifier

600 watts Max, Class D MonoBlock Amplifier • 300 watts x 1 chan. @ 4 ohm • Patented State-of-the-Art Power Supply • CEA-2006 Compliant • Adjustable Bass Boost and Remote Subwoofer Control • Defeatable Subsonic Filter • High Level Input • RCA Inputs and Output

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600 watts Max, Class D MonoBlock Amplifier • 300 watts x 1 chan. @ 4 ohm • Patented State-of-the-Art Power Supply • CEA-2006 Compliant • Adjustable Bass Boost and Remote Subwoofer Control • Defeatable Subsonic Filter • High Level Input • RCA Inputs and Output

MTX RFL600D

1200W Max, RFL Series Class D Monoblock Amplifier

RFL600D big DISCONTINUED
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MTX RFL600D

1200W Max, RFL Series Class D Monoblock Amplifier

Single-Channel Monoblock Car Amplifier • RFL Series • Adaptive Class D Technology • 1200 Watts Max • 600 Watts @ 2 ohm • 350 Watts @ 4 ohm • Active Fan Cooling • Bass Boost • EBC • CEA-2006 compliant

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Single-Channel Monoblock Car Amplifier • RFL Series • Adaptive Class D Technology • 1200 Watts Max • 600 Watts @ 2 ohm • 350 Watts @ 4 ohm • Active Fan Cooling • Bass Boost • EBC • CEA-2006 compliant

Precision Power PPI BK1800.1D

1800W RMS Monoblock Class D Black Ice Series Car Amplifier

BK1800.1D big DISCONTINUED
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Precision Power PPI BK1800.1D

1800W RMS Monoblock Class D Black Ice Series Car Amplifier

• RMS: 700W x 1 @ 4 ohm, 1100W x 1 @ 2 ohm, 1800W x 1 @ 1 ohm
• Total RMS Power: 1800W
• Remote Bass Knob Included!
• Switchable Bass Boost (0, +6, or +12 dB)
• Balanced Signal Input for Noise Rejection
• Dimensions: 19-3/4"L x 8-1/4"W x 2"H

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• RMS: 700W x 1 @ 4 ohm, 1100W x 1 @ 2 ohm, 1800W x 1 @ 1 ohm
• Total RMS Power: 1800W
• Remote Bass Knob Included!
• Switchable Bass Boost (0, +6, or +12 dB)
• Balanced Signal Input for Noise Rejection
• Dimensions: 19-3/4"L x 8-1/4"W x 2"H

Infinity K2 Amplifier with Clari-fi Technology (Open Box)

700W Peak (240W RMS) High Performance Kappa Series Class-D 2-Channel 2-Ohm Stable Amplifier with Bluetooth and Clari-Fi Technology

K2 big DISCONTINUED
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Infinity K2 Amplifier with Clari-fi Technology (Open Box)

700W Peak (240W RMS) High Performance Kappa Series Class-D 2-Channel 2-Ohm Stable Amplifier with Bluetooth and Clari-Fi Technology

• Item Condition: Like New Open Box
• 100 Watts RMS x 2 @ 4 ohm
• 120 Watts RMS x 2 @ 2 ohm
• 240 Watts RMS x 1 @ 4 ohm Bridged
• Total Peak Power: 700 Watts
• Bluetooth Streaming
• Clari-fi Technology
• Wired control panel
• Speaker-level (high-level) inputs

• Item Condition: Like New Open Box
• 100 Watts RMS x 2 @ 4 ohm
• 120 Watts RMS x 2 @ 2 ohm
• 240 Watts RMS x 1 @ 4 ohm Bridged
• Total Peak Power: 700 Watts
• Bluetooth Streaming
• Clari-fi Technology
• Wired control panel
• Speaker-level (high-level) inputs

MTX Thunder Elite 801D (TE801D)

1600W Max, Class D Monoblock Thunder Elite Amplifier

TE801D big DISCONTINUED
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MTX Thunder Elite 801D (TE801D)

1600W Max, Class D Monoblock Thunder Elite Amplifier

Class D Monoblock Amplifier • Max Power: 1600 Watts • Frequency Response: 20-200 Hz • CEA-2006 compliant

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Class D Monoblock Amplifier • Max Power: 1600 Watts • Frequency Response: 20-200 Hz • CEA-2006 compliant

RE Audio DTX-1600.1

750W RMS DTX Series Class D Monoblock Amplifier

DTX-1600.1 big DISCONTINUED
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RE Audio DTX-1600.1

750W RMS DTX Series Class D Monoblock Amplifier

• DTX Series Single Channel Monoblock Class D Amplifier
• 350W x 1 Chan. @ 4 ohm
• 550W x 1 Chan. @ 2 ohm
• 750W x 1 Chan. @ 1 ohm
• 4-Way System Protection • 1 Channel Operation
• 4 Gauge Power and Ground Inputs
• Variable Bass Boost (0-18 dB)

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• DTX Series Single Channel Monoblock Class D Amplifier
• 350W x 1 Chan. @ 4 ohm
• 550W x 1 Chan. @ 2 ohm
• 750W x 1 Chan. @ 1 ohm
• 4-Way System Protection • 1 Channel Operation
• 4 Gauge Power and Ground Inputs
• Variable Bass Boost (0-18 dB)

Orion CB1200.1D

2400W Monoblock Cobalt Series Class D Amplifier

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Orion CB1200.1D

2400W Monoblock Cobalt Series Class D Amplifier

• RMS Power: 200W x 1 @ 4 ohm, 300W x 1 @ 2 ohm, 600W x 1 @ 1 ohm
• Total Peak Power: 2400W
• Variable Low Pass Filter
• Dimensions: 7-1/2" W x 13-1/2" L x 2" H

• RMS Power: 200W x 1 @ 4 ohm, 300W x 1 @ 2 ohm, 600W x 1 @ 1 ohm
• Total Peak Power: 2400W
• Variable Low Pass Filter
• Dimensions: 7-1/2" W x 13-1/2" L x 2" H

Boss R4004

1600W Max (600W RMS) Riot Series Class-A/B 4-Channel 2 ohm Stable Amplifier, Remote Level Control

R4004 big DISCONTINUED
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Boss R4004

1600W Max (600W RMS) Riot Series Class-A/B 4-Channel 2 ohm Stable Amplifier, Remote Level Control

• 150W RMS x 4 @ 4 ohm
• 300W RMS x 4 @ 2 ohm
• 600 Watts RMS x 2 @ 4 ohm, Bridged
• Total Peak Power: 1600 Watts
• Adjustable Low-Pass Filter
• 0-18dB Bass Boost
• Aluminum Heatsink
• Dimensions: 10.4375" W x 15.4375" L x 2.25" H

• 150W RMS x 4 @ 4 ohm
• 300W RMS x 4 @ 2 ohm
• 600 Watts RMS x 2 @ 4 ohm, Bridged
• Total Peak Power: 1600 Watts
• Adjustable Low-Pass Filter
• 0-18dB Bass Boost
• Aluminum Heatsink
• Dimensions: 10.4375" W x 15.4375" L x 2.25" H

Performance Teknique ICBM-7997

2600W Max, Class D Digital Monoblock Amplifier with Wired Bass Remote

ICBM-7997 big DISCONTINUED
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Performance Teknique ICBM-7997

2600W Max, Class D Digital Monoblock Amplifier with Wired Bass Remote

ICBM Monoblock Class D Car Amplifier • 500 Watts X 1 Chan. @ 4 Ohm • 800 Watts X 4 Chan. @ 2 Ohm • 2600 Watts MAX • Soft Start On/Off • Bypass Line Output • 3-Way System Protection • Mono Channel Operation •

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ICBM Monoblock Class D Car Amplifier • 500 Watts X 1 Chan. @ 4 Ohm • 800 Watts X 4 Chan. @ 2 Ohm • 2600 Watts MAX • Soft Start On/Off • Bypass Line Output • 3-Way System Protection • Mono Channel Operation •

Kenwood eXcelon KAC-X811D

KAC-X811D big DISCONTINUED
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Kenwood eXcelon KAC-X811D

• A.M.S. Amplifier Management System • Class D Operation • Quiet Turn-On • Maximum Output Power: 1600 Watts x 1 • Large Secondary Capacitors • MOSFET Power Supply • 1 Cooling Fan (2-speed)

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• A.M.S. Amplifier Management System • Class D Operation • Quiet Turn-On • Maximum Output Power: 1600 Watts x 1 • Large Secondary Capacitors • MOSFET Power Supply • 1 Cooling Fan (2-speed)

SPL GLA1-4500D

4500W Max Monoblock Class D Gorilla Series Car Amplifier

GLA1-4500D big DISCONTINUED
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SPL GLA1-4500D

4500W Max Monoblock Class D Gorilla Series Car Amplifier

• RMS: 1200W x 1 @ 4 ohm, 1700W x 1 @ 2 ohm, 2200W x 1 @ 1 ohm
• Total Peak Power: 4500W
• Class D Circuitry
• Bass Boost 0-12 dB
• 1 Pair of Preamp Outputs
• Dimensions: 9-1/10"W x 14-3/4"L x 2-3/10"H

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• RMS: 1200W x 1 @ 4 ohm, 1700W x 1 @ 2 ohm, 2200W x 1 @ 1 ohm
• Total Peak Power: 4500W
• Class D Circuitry
• Bass Boost 0-12 dB
• 1 Pair of Preamp Outputs
• Dimensions: 9-1/10"W x 14-3/4"L x 2-3/10"H

MTX Audio THUNDER1000.1 (Open Box Complete)

2000W Peak (1000W RMS) Thunder Series Class-D 1-Ohm Stable Monoblock Amplifier

THUNDER1000.1 big DISCONTINUED
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MTX Audio THUNDER1000.1 (Open Box Complete)

2000W Peak (1000W RMS) Thunder Series Class-D 1-Ohm Stable Monoblock Amplifier

• RMS: 350W x 1 @ 4 ohm, 600W x 1 @ 2 ohm, 1000W x 1 @ 1 ohm
• Total Peak Power: 2000W
• 3-Way Protection Circuitry
• Selectable Bass Boost (0-6-12 dB)
• Class D Circuitry
• Dimensions: 6-5/16"W x 12-1/8"L x 2-1/4"H

• RMS: 350W x 1 @ 4 ohm, 600W x 1 @ 2 ohm, 1000W x 1 @ 1 ohm
• Total Peak Power: 2000W
• 3-Way Protection Circuitry
• Selectable Bass Boost (0-6-12 dB)
• Class D Circuitry
• Dimensions: 6-5/16"W x 12-1/8"L x 2-1/4"H

Soundstream T1.6000DL

6,000W Tarantula Series Mono Block Class D Car Amplifier

T1.6000DL big DISCONTINUED
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Soundstream T1.6000DL

6,000W Tarantula Series Mono Block Class D Car Amplifier

• RMS: 800W x 1 @ 4 ohm, 1400W x 1 @ 2 ohm, 2500W x 1 @ 1 ohm, 3000W x 1 @ 0.5 ohm
• Total Peak Power: 6000W
• Dash Mount Gain Control Module Included
• Multi-color RGB LED Illumination Accent Lighting
• DataLink for Strapping Two Amps for Double Power
• 9"W x 20.50"L x 2.5"H

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• RMS: 800W x 1 @ 4 ohm, 1400W x 1 @ 2 ohm, 2500W x 1 @ 1 ohm, 3000W x 1 @ 0.5 ohm
• Total Peak Power: 6000W
• Dash Mount Gain Control Module Included
• Multi-color RGB LED Illumination Accent Lighting
• DataLink for Strapping Two Amps for Double Power
• 9"W x 20.50"L x 2.5"H

Phoenix Gold RSd 1200.1 (RSd1200.1)

1200W RMS, Radial Sd Series Class D Monoblock Amplifier

RSd1200.1 big DISCONTINUED
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Phoenix Gold RSd 1200.1 (RSd1200.1)

1200W RMS, Radial Sd Series Class D Monoblock Amplifier

1200W RSd Class D Monoblock Amplifier • 780W x 1 chan. @ 4 Ohm • 1200W x 1 chan. @ 2 Ohm • MOSFET power supply • protection circuitry • line level inputs • variable bass boost • S/N ratio: 79dB

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1200W RSd Class D Monoblock Amplifier • 780W x 1 chan. @ 4 Ohm • 1200W x 1 chan. @ 2 Ohm • MOSFET power supply • protection circuitry • line level inputs • variable bass boost • S/N ratio: 79dB

MTX Audio XThunder 600XD

1200W Max, Class D Monoblock Amplifier X Thunder 600 XD

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MTX Audio XThunder 600XD

1200W Max, Class D Monoblock Amplifier X Thunder 600 XD

X Thunder Series 1-Channel Class D Car Amplifier • 325W x 1 chan. @ 4 ohm • 600W x 1 chan. @ 2 ohm • 0-12 dB Bass Boost • Heavy duty aluminum construction with large heat-sinks

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X Thunder Series 1-Channel Class D Car Amplifier • 325W x 1 chan. @ 4 ohm • 600W x 1 chan. @ 2 ohm • 0-12 dB Bass Boost • Heavy duty aluminum construction with large heat-sinks

MTX Audio TA92001 Thunder 92001

Class D Monoblock Super Amplifier Thunder92001

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MTX Audio TA92001 Thunder 92001

Class D Monoblock Super Amplifier Thunder92001

Thunder Super Amplifier • 3000W RMS x 1 @ 1 ohm • 2000W RMS x 1 @ 2 ohm • 1000W RMS x 1 @ 4 ohm • Parametric Bass Boost • Prizm EFX • Xtant Cooling Technology • Wired Remote • Built-In Capacitor Terminals

Thunder Super Amplifier • 3000W RMS x 1 @ 1 ohm • 2000W RMS x 1 @ 2 ohm • 1000W RMS x 1 @ 4 ohm • Parametric Bass Boost • Prizm EFX • Xtant Cooling Technology • Wired Remote • Built-In Capacitor Terminals

Hifonics X2200.1D

2200W BRUTUS X-14 Series Class-D Monoblock 1-Channel Amplifier

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Hifonics X2200.1D

2200W BRUTUS X-14 Series Class-D Monoblock 1-Channel Amplifier

• RMS Power: 950W x 1 @ 4 ohm, 1600W x 1 @ 2 ohm, 2200W x 1 @ 1 ohm
• Total Peak Power: 2200W
• Variable Low Pass Filter
• 13.39"W x 2.5"H x 9.49"L

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• RMS Power: 950W x 1 @ 4 ohm, 1600W x 1 @ 2 ohm, 2200W x 1 @ 1 ohm
• Total Peak Power: 2200W
• Variable Low Pass Filter
• 13.39"W x 2.5"H x 9.49"L

RE Audio XTX-3000.1 (XTX3000.1)

3000W XTX Series Monoblock Full Digital Class D Car Amplifier

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RE Audio XTX-3000.1 (XTX3000.1)

3000W XTX Series Monoblock Full Digital Class D Car Amplifier

XTX Series Monoblock Full Range Digital Car Amplifier • 3000W Dynamic • 2-Way System Protection • Brushed Aluminum Alloy Convection Cooled Heatsink • Variable Low-Pass Filter • Variable Bass Boost

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XTX Series Monoblock Full Range Digital Car Amplifier • 3000W Dynamic • 2-Way System Protection • Brushed Aluminum Alloy Convection Cooled Heatsink • Variable Low-Pass Filter • Variable Bass Boost

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    FAQ Frequently asked questions in Discontinued Class-D Amplifiers

    Class D Amplifiers Frequently Asked Questions (FAQ)
    Class D amplifiers are a type of switching amplifier known for their high efficiency and compact size. Unlike traditional Class A, B, and AB amplifiers that use continuous analog voltage to amplify audio signals, Class D amplifiers employ a digital switching technique. This process rapidly switches the output transistors on and off, effectively turning them into binary switches that deliver the audio signal to the speaker. The switching nature of Class D amplifiers drastically reduces power wastage, resulting in higher efficiency and less heat production. As a result, Class D amplifiers are ideal for applications with limited space or power constraints, making them popular in car audio, home theater systems, and portable devices.
    Yes, modern Class D amplifiers have made significant advancements in audio fidelity and can deliver high-quality sound performance. While traditional audiophiles may have associated Class D with lower audio quality due to early models' limitations, today's Class D amplifiers have overcome many of these challenges. With advancements in switching technology, filtering, and feedback mechanisms, Class D amplifiers can now offer exceptional audio reproduction that rivals traditional Class AB amplifiers. Additionally, Class D amplifiers' efficiency and lower heat generation make them well-suited for high-power audio applications where traditional amplifiers would be impractical.
    Yes, Class D amplifiers are versatile and can power various speaker types, including subwoofers, woofers, mid-range, and tweeters. When selecting a Class D amplifier for your speakers, consider the power output (wattage) and impedance rating. Ensure that the amplifier's power rating matches or slightly exceeds your speakers' power handling capabilities to prevent underpowering or overpowering, which can lead to distortion or speaker damage. Additionally, check the amplifier's impedance range to ensure compatibility with your speakers' impedance. Most Class D amplifiers can handle both 4-ohm and 2-ohm loads, making them suitable for a wide range of speaker configurations.
    No, Class D amplifiers are known for their high efficiency, which results in significantly less heat generation compared to other amplifier classes like Class A or Class AB. The digital switching technique used in Class D amplifiers reduces power loss, resulting in a more efficient conversion of electrical energy into audio output. As a result, Class D amplifiers remain relatively cool even at high volume levels, making them suitable for space-constrained installations and applications where heat dissipation is a concern. Their cool operation also extends the lifespan of internal components and reduces the need for large heat sinks or fans.
    Yes, many Class D amplifiers support bridge mode, allowing you to increase the power output when driving a single speaker or subwoofer. In bridge mode, the amplifier combines the power output from two channels into a single channel, effectively doubling the power delivered to the speaker. However, it's essential to follow the manufacturer's guidelines and ensure that your amplifier supports bridging. Additionally, pay attention to the speaker's impedance requirements, as bridging may change the amplifier's impedance capabilities. If you're unsure or need assistance with bridging your Class D amplifier, contact Sonic Electronix's knowledgeable staff, who can help you find the right amplifier and configuration for your audio setup. With their compact size, high efficiency, and versatility, Class D amplifiers offer a compelling solution for various audio applications, delivering powerful and clear sound performance with minimal heat output.
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