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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.

MB Quart Reference RA2000.1

2000W Class D 1-Channel Monoblock Reference Series Amplifier

RA2000.1 big DISCONTINUED
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MB Quart Reference RA2000.1

2000W Class D 1-Channel Monoblock Reference Series Amplifier

• Peak: 650W x 1 @ 4 ohm, 1300W x 1 @ 2 ohm, 2000W x 1 @ 1 ohm
• Total Peak Power: 4000W
• Built-In System Diagnostics
• Variable Bass EQ: 0 to +10 dB at 45 Hz
• Class D Circuitry
• Dimensions: 8-5/16"W x 20-1/2"D x 2-3/8"H

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• Peak: 650W x 1 @ 4 ohm, 1300W x 1 @ 2 ohm, 2000W x 1 @ 1 ohm
• Total Peak Power: 4000W
• Built-In System Diagnostics
• Variable Bass EQ: 0 to +10 dB at 45 Hz
• Class D Circuitry
• Dimensions: 8-5/16"W x 20-1/2"D x 2-3/8"H

Performance Teknique ICBM-MONSTER

6000W, Max Class D Digital Monoblock Amplifier

ICBM-MONSTER big DISCONTINUED
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Performance Teknique ICBM-MONSTER

6000W, Max Class D Digital Monoblock Amplifier

ICBM Monoblock Class D Car Amplifier • 800 Watts X 1 Chan. @ 4 Ohm • 1300 Watts X 4 Chan. @ 2 Ohm • 2000 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 • 800 Watts X 1 Chan. @ 4 Ohm • 1300 Watts X 4 Chan. @ 2 Ohm • 2000 Watts MAX • Soft Start On/Off • Bypass Line Output • 3-Way System Protection • Mono Channel Operation •

Precision Power PPI i450.1

450W RMS Single-Channel Monoblock iON Series Class D Full-Range Digital Stereo Bridgeable Amplifier

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Precision Power PPI i450.1

450W RMS Single-Channel Monoblock iON Series Class D Full-Range Digital Stereo Bridgeable Amplifier

• RMS: 260 x 1 @ 4 ohm, 450W x 1 @ 2 ohm
• Total RMS Power: 450W
• Class D Circuitry
• Bass Boost: 0 - 12 dB at 45 Hz
• Wired Bass Remote Included
• Dimensions: 5-5/16"W x 8"L x 1-11/16"H

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• RMS: 260 x 1 @ 4 ohm, 450W x 1 @ 2 ohm
• Total RMS Power: 450W
• Class D Circuitry
• Bass Boost: 0 - 12 dB at 45 Hz
• Wired Bass Remote Included
• Dimensions: 5-5/16"W x 8"L x 1-11/16"H

MTX RFL300D

600W Max, RFL Series Class D Monoblock Amplifier

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MTX RFL300D

600W Max, RFL Series Class D Monoblock Amplifier

RFL Series Monoblock Class D Car Amplifier • 600W Max • 300W x 1 Chan. @ 2 Ohm • Dual Speaker Terminals • Variable Low-Pass Filter • Subsonic Filter • CEA-2006 Compliant • Bass Boost

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RFL Series Monoblock Class D Car Amplifier • 600W Max • 300W x 1 Chan. @ 2 Ohm • Dual Speaker Terminals • Variable Low-Pass Filter • Subsonic Filter • CEA-2006 Compliant • Bass Boost

Rockford Fosgate POWER-1000

1400W RMS, '25 to LIFE' Special Edition Staggered 5-Channel Amplifier w/ Class D 5th Sub Channel

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Rockford Fosgate POWER-1000

1400W RMS, '25 to LIFE' Special Edition Staggered 5-Channel Amplifier w/ Class D 5th Sub Channel

1400W Total RMS Power, '25 to LIFE' Special Edition Staggered 5-Channel Amplifier • 24 dB/Octave Linkwitz-Reilly Crossover Alignment • 1400W Total RMS Power output at 1 ohm • 1000W Total RMS Power Output • Bass remote included

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1400W Total RMS Power, '25 to LIFE' Special Edition Staggered 5-Channel Amplifier • 24 dB/Octave Linkwitz-Reilly Crossover Alignment • 1400W Total RMS Power output at 1 ohm • 1000W Total RMS Power Output • Bass remote included

Power Acoustik BAMF1-5000D

5000W Max (2500W RMS) BAMF Series Class D 1-Ohm Stable Strappable Monoblock Amplifier

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Power Acoustik BAMF1-5000D

5000W Max (2500W RMS) BAMF Series Class D 1-Ohm Stable Strappable Monoblock Amplifier

• 1800 Watts RMS x 1 @ 4 ohm
• 2700 Watts RMS x 1 @ 2 ohm
• 4000 Watts RMS x 1 @ 1 ohm
• Total Peak Power: 5000 Watts
• Variable low-pass filter: 40 - 200 Hz, 12 dB/octave
• Variable Bass Boost: 0 to +12 dB bass boost
• Subsonic filter: 20 - 50 Hz , 12 dB/octave
• Die-Cast Aluminum Alloy Heatsink for Optimum Dissipation

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• 1800 Watts RMS x 1 @ 4 ohm
• 2700 Watts RMS x 1 @ 2 ohm
• 4000 Watts RMS x 1 @ 1 ohm
• Total Peak Power: 5000 Watts
• Variable low-pass filter: 40 - 200 Hz, 12 dB/octave
• Variable Bass Boost: 0 to +12 dB bass boost
• Subsonic filter: 20 - 50 Hz , 12 dB/octave
• Die-Cast Aluminum Alloy Heatsink for Optimum Dissipation

Hifonics BX500D Brutus Class-D Series

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Hifonics BX500D Brutus Class-D Series

BX500D Brutus Series Monoblock Car Amplifier • 200 watts x 1 chan @ 4 ohm • 350 watts x 1 chan @ 2 ohm • Bass Remote Included • Illuminated Hifonics Badge • Ultra-Fi MOSFET Board • Fully Adjustable Accu-Cross Crossovers

BX500D Brutus Series Monoblock Car Amplifier • 200 watts x 1 chan @ 4 ohm • 350 watts x 1 chan @ 2 ohm • Bass Remote Included • Illuminated Hifonics Badge • Ultra-Fi MOSFET Board • Fully Adjustable Accu-Cross Crossovers

Boss DD3600

3600W Max, Class D Monoblock Diablo Series Amplifier

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Boss DD3600

3600W Max, Class D Monoblock Diablo Series Amplifier

Diablo Series Class D Monoblock Car Amplifier • 1350 x 1 chan. @ 4 ohm • 1850 x 1 chan. @ 2 ohm • 3600W x 1 chan. Max • Remote subwoofer control • Variable low pass crossover(24dB) • Input sensitivity selector

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Diablo Series Class D Monoblock Car Amplifier • 1350 x 1 chan. @ 4 ohm • 1850 x 1 chan. @ 2 ohm • 3600W x 1 chan. Max • Remote subwoofer control • Variable low pass crossover(24dB) • Input sensitivity selector

Soundstream DTR1.1700D

1700W RMS, D-Tower Series Class D Monoblock Power Amplifier

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Soundstream DTR1.1700D

1700W RMS, D-Tower Series Class D Monoblock Power Amplifier

D-Tower Series Monoblock Class D Car Amplifier • 1700W x 1 Chan. @ 1 Ohm • 1100W x 1 Chan. @ 2 Ohm • Double Side PCB And SMD Components • Remote Bass Level Input • Gloss Black Finish • 3-Way System Protection Circuitry

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D-Tower Series Monoblock Class D Car Amplifier • 1700W x 1 Chan. @ 1 Ohm • 1100W x 1 Chan. @ 2 Ohm • Double Side PCB And SMD Components • Remote Bass Level Input • Gloss Black Finish • 3-Way System Protection Circuitry

Hifonics BX1505D

Class D MonoBlock Amplifier -- Classic Brutus version of TX1505D

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Hifonics BX1505D

Class D MonoBlock Amplifier -- Classic Brutus version of TX1505D

1 Chan. Mono Block Subwoofer Amp • 1500 Watts RMS x 1 chan. @ 1 Ohm • 1000 Watts RMS x 1 chan. @ 2 Ohm • 500 Watts x 1 chan. @ 4 Ohm • THD: <0.08 • Signal to Noise Ratio: >95dB

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1 Chan. Mono Block Subwoofer Amp • 1500 Watts RMS x 1 chan. @ 1 Ohm • 1000 Watts RMS x 1 chan. @ 2 Ohm • 500 Watts x 1 chan. @ 4 Ohm • THD: <0.08 • Signal to Noise Ratio: >95dB

Kicker Monoblock Amplifier + Cerwin-Vega 12" Subwoofer + Belva Amp Kit

500W Max Kicker 43DXA2501 Monoblock Amplifier + Cerwin-Vega XED12v2 Subwoofer + Belva Bak42bk (Black)

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Kicker Monoblock Amplifier + Cerwin-Vega 12" Subwoofer + Belva Amp Kit

500W Max Kicker 43DXA2501 Monoblock Amplifier + Cerwin-Vega XED12v2 Subwoofer + Belva Bak42bk (Black)

• RMS Power: 125W x 1 @ 4 ohm, 250W x 1 @ 2 ohm
• Signal to Noise Ratio: >95dB
• CEA-2006 Compliant
• >Dimensions: 8-1/8" W x 7-3/16" D x 2-3/8" H

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• RMS Power: 125W x 1 @ 4 ohm, 250W x 1 @ 2 ohm
• Signal to Noise Ratio: >95dB
• CEA-2006 Compliant
• >Dimensions: 8-1/8" W x 7-3/16" D x 2-3/8" H

JBL GTO1201.1 1200 Watt Grand Touring Series ( Class D )

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JBL GTO1201.1 1200 Watt Grand Touring Series ( Class D )

1200 Watt Class D Subwoofer Amplifier • Dynamic Power: 1339 watts @ 2 ohm • Variable bass boost • RCA low-level inputs • Full-range preamp outputs • Optional remote level bass control available

1200 Watt Class D Subwoofer Amplifier • Dynamic Power: 1339 watts @ 2 ohm • Variable bass boost • RCA low-level inputs • Full-range preamp outputs • Optional remote level bass control available

MTX Audio TC3001

900W Max, Thunder TC Class D Monoblock Amplifier

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MTX Audio TC3001

900W Max, Thunder TC Class D Monoblock Amplifier

900 watts Max, Class D Monoblock Amplifier • 200 watts x 1 chan. @ 2 ohm • CEA-2006 Compliant • 24 dB per Octave, Adjustable Low Pass Crossover • Smart Engage Auto Turn-On for easy installation with factory radios • Frequency Response: 20 - 200 Hz

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900 watts Max, Class D Monoblock Amplifier • 200 watts x 1 chan. @ 2 ohm • CEA-2006 Compliant • 24 dB per Octave, Adjustable Low Pass Crossover • Smart Engage Auto Turn-On for easy installation with factory radios • Frequency Response: 20 - 200 Hz

Planet Audio TQ1201D

1200W Max, Torq Series Class D Monoblock Power Car Amplifier with Remote

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Planet Audio TQ1201D

1200W Max, Torq Series Class D Monoblock Power Car Amplifier with Remote

Max Torq Series Monoblock MOSFET Power Amplifier • 350W x 1 chan @ 4 ohm • 500W x 1 chan @ 2 ohm • Variable Bass Boost • LED Power and Protect Indicators • Illuminated Planet Audio Logo • Subsonic Filter

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Max Torq Series Monoblock MOSFET Power Amplifier • 350W x 1 chan @ 4 ohm • 500W x 1 chan @ 2 ohm • Variable Bass Boost • LED Power and Protect Indicators • Illuminated Planet Audio Logo • Subsonic Filter

DLS X-D10

590W RMS X-Program Monoblock Class D Car Audio Amplifier

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DLS X-D10

590W RMS X-Program Monoblock Class D Car Audio Amplifier

• 590W
• Dual Speaker Terminals
• Preamp RCA outputs
• 3-Way System Protection Circuitry
• Speaker-Level Inputs
• Variable Bass Boost
• Variable Low-Pass Filter
• Phase Shift

• 590W
• Dual Speaker Terminals
• Preamp RCA outputs
• 3-Way System Protection Circuitry
• Speaker-Level Inputs
• Variable Bass Boost
• Variable Low-Pass Filter
• Phase Shift

Hifonics TX1005D

Class D Monoblock Amplifier

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Hifonics TX1005D

Class D Monoblock Amplifier

Class-D Monoblock Amplifier • 1000W RMS x 1 @ 1 • 700W RMS x 1 @ 2 • Bass Remote Included • 21st Anniversary Heat-Sink Design • Silver RCA Connectors • 1 Pair RCA Outputs • Fully Adjustable Accu-Cross Crossver • 0 - 18 dB Bass Boost

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Class-D Monoblock Amplifier • 1000W RMS x 1 @ 1 • 700W RMS x 1 @ 2 • Bass Remote Included • 21st Anniversary Heat-Sink Design • Silver RCA Connectors • 1 Pair RCA Outputs • Fully Adjustable Accu-Cross Crossver • 0 - 18 dB Bass Boost

Kenwood eXcelon KAC-X1R

2400W Max, Class D Monoblock Amplifier

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Kenwood eXcelon KAC-X1R

2400W Max, Class D Monoblock Amplifier

>2400 watt Monoblock amplifier • 1200 watts x 1 RMS @ 2 ohm • Optional Wired Remote • Master/Slave Capable • 75 Amp Power Consumption

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>2400 watt Monoblock amplifier • 1200 watts x 1 RMS @ 2 ohm • Optional Wired Remote • Master/Slave Capable • 75 Amp Power Consumption

Planet Audio PX5000D

3600W RMS Axis Series Class D Monoblock Car Amplifier

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Planet Audio PX5000D

3600W RMS Axis Series Class D Monoblock Car Amplifier

• RMS: 1300W x 1 @ 4 ohm, 2400W x 1 @ 2 ohm, 3600W x 1 @ 1 ohm
• Total Peak Power: 5000W
• Wired Bass Knob Included
• Switchable Bass Boost: 0 or +18 dB at 50 Hz
• Class D Circuitry
• Dimensions: 10-11/16"W x 15-15/16D x 2-3/8"H

• RMS: 1300W x 1 @ 4 ohm, 2400W x 1 @ 2 ohm, 3600W x 1 @ 1 ohm
• Total Peak Power: 5000W
• Wired Bass Knob Included
• Switchable Bass Boost: 0 or +18 dB at 50 Hz
• Class D Circuitry
• Dimensions: 10-11/16"W x 15-15/16D x 2-3/8"H

Hifonics Zeus ZRX2000.1D

2000W Max Class D Monoblock Zeus Series Amplifier

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Hifonics Zeus ZRX2000.1D

2000W Max Class D Monoblock Zeus Series Amplifier

Zeus Series Single Channel Monoblock Class D Car Amplifier • 4 ohm: 650 watts x 1 chan. • 2 ohm: 1300 watts x 1 chan. • 1 ohm: 2000 watts x 1 chan. • Pulse Width Modulated (PWM) MOSFET Power Supply

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Zeus Series Single Channel Monoblock Class D Car Amplifier • 4 ohm: 650 watts x 1 chan. • 2 ohm: 1300 watts x 1 chan. • 1 ohm: 2000 watts x 1 chan. • Pulse Width Modulated (PWM) MOSFET Power Supply

Orion XTR5001 (XTR 5001)

1000W Max XTR Series Class D Monoblock High Performance Car Audio Amplifier

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Orion XTR5001 (XTR 5001)

1000W Max XTR Series Class D Monoblock High Performance Car Audio Amplifier

• RMS: 125W x 1 @ 4 ohm, 250W x 1 @ 2 ohm, 500W x 1 @ 1 ohm
• Total Peak Power: 1000W
• CEA-2006 Compliant
• Variable Bass Boost: 0 to +18 dB at 45 Hz
• Class D Circuitry
• Dimensions: 9-1/2"D x 10-7/8"W x 2-5/8"H

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• RMS: 125W x 1 @ 4 ohm, 250W x 1 @ 2 ohm, 500W x 1 @ 1 ohm
• Total Peak Power: 1000W
• CEA-2006 Compliant
• Variable Bass Boost: 0 to +18 dB at 45 Hz
• Class D Circuitry
• Dimensions: 9-1/2"D x 10-7/8"W x 2-5/8"H

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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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