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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 (70)
Zeus Series (56)
X Series (39)
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CX Series (27)
N Series (26)
XDM Series (26)
SALT Series (24)
SFB Series (22)
HD Series (21)
RD Series (21)
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Kappa Series (19)
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Reference Series (17)
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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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MTX Audio JHP212D (2 MTX Subs + Sub Box + MTX Amplifier)

Two 500W 12" MTX JH4512-04 Subwoofers + 600W MTX JH300 Amplifier + MTX Bass Slammer BS212S Subwoofer Enclosure

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MTX Audio JHP212D (2 MTX Subs + Sub Box + MTX Amplifier)

Two 500W 12" MTX JH4512-04 Subwoofers + 600W MTX JH300 Amplifier + MTX Bass Slammer BS212S Subwoofer Enclosure

JackHammer Series Class D Monoblock Car Amplifier • 2 12" JackHammer 45 Round Series Subwoofers • MTX Bass Slammer Subwoofer Enclosure • 500 Watts Peak • 250 Watts RMS • Wired Bass Remote Knob • Fan Cooled

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JackHammer Series Class D Monoblock Car Amplifier • 2 12" JackHammer 45 Round Series Subwoofers • MTX Bass Slammer Subwoofer Enclosure • 500 Watts Peak • 250 Watts RMS • Wired Bass Remote Knob • Fan Cooled

Visonik V718XD MonoBlock Class X / D

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Visonik V718XD MonoBlock Class X / D

** FREE GROUND SHIPPING AND 4 GAUGE AMPLIFIER KIT WITH PURCHASE **
1200 watts Class X MonoBlock Digital Amplifier • 1 ohm stable • Remote gain/bass control • variable low pass filter • frequency response: 10Hz - 350Hz

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** FREE GROUND SHIPPING AND 4 GAUGE AMPLIFIER KIT WITH PURCHASE **
1200 watts Class X MonoBlock Digital Amplifier • 1 ohm stable • Remote gain/bass control • variable low pass filter • frequency response: 10Hz - 350Hz

SoundStream PIC1.900D Picasso Series

PIC1.900D big DISCONTINUED
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SoundStream PIC1.900D Picasso Series

Class D 900W RMS MonoBlock Sub Amplifier

Class D 900W RMS MonoBlock Sub Amplifier

EXCLUSIVE

Hifonics Brutus BRX2016.1D 2000 Watt RMS Amplifier + Premium Amp Kit

NVX XKIT02 100% Copper Amp Installation Wire Kit Included!!!

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Hifonics Brutus BRX2016.1D 2000 Watt RMS Amplifier + Premium Amp Kit

NVX XKIT02 100% Copper Amp Installation Wire Kit Included!!!

• RMS Power: 700W x 1 @ 4 ohm, 1400W x 1 @ 2 ohm, 2000W x 1 @ 1 ohm
• Total Peak Power: 2000W
• Variable Low Pass Filter
• Dimensions: 9.8" W x 14.7" L x 2.4" H

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• RMS Power: 700W x 1 @ 4 ohm, 1400W x 1 @ 2 ohm, 2000W x 1 @ 1 ohm
• Total Peak Power: 2000W
• Variable Low Pass Filter
• Dimensions: 9.8" W x 14.7" L x 2.4" H

RE Audio VLX 3DE

2400W RMS, 1-Channel Monoblock Class "DE" Digital Stereo Amplifier

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RE Audio VLX 3DE

2400W RMS, 1-Channel Monoblock Class "DE" Digital Stereo Amplifier

VLX Series Monoblock Class "DE" Digital Stereo Amplifier • 2400W x 1 Chan @ 1 Ohm • 1200W x 1 Chan @ 2 Ohm • Magnetic Induction Regulated Drive Power Supply • Balanced Transformer-Less Logic Input

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VLX Series Monoblock Class "DE" Digital Stereo Amplifier • 2400W x 1 Chan @ 1 Ohm • 1200W x 1 Chan @ 2 Ohm • Magnetic Induction Regulated Drive Power Supply • Balanced Transformer-Less Logic Input

Lanzar OPTI3500D

3500W RMS, Monoblock Class D OptiDrive Series Car Amplifier

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Lanzar OPTI3500D

3500W RMS, Monoblock Class D OptiDrive Series Car Amplifier

• RMS: 1800W x 1 @ 4 ohm, 2000W x 1 @ 2 ohm, 2500W x 1 @ 1 ohm
• Total RMS Power: 3200W
• Class D Circuitry
• Bass Boost: 0-18 dB
• 0.5 Ohm Stable
• Dimensions: 23-1/3"L x 10-11/16"W x 2-1/8"H

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• RMS: 1800W x 1 @ 4 ohm, 2000W x 1 @ 2 ohm, 2500W x 1 @ 1 ohm
• Total RMS Power: 3200W
• Class D Circuitry
• Bass Boost: 0-18 dB
• 0.5 Ohm Stable
• Dimensions: 23-1/3"L x 10-11/16"W x 2-1/8"H

Kicker CX300.4 (12CX300.4)

300W Class D 4-Channel CX Series Car Amplifier

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Kicker CX300.4 (12CX300.4)

300W Class D 4-Channel CX Series Car Amplifier

• 40W x 4-Chan. @ 4 ohm
• 75W x 4-Chan. @ 2 ohm
• 3-Way System Protection
• 4/3/2 Channel Operation
• 4 Gauge Power and Ground Inputs
• Nickel-Plated Terminals

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• 40W x 4-Chan. @ 4 ohm
• 75W x 4-Chan. @ 2 ohm
• 3-Way System Protection
• 4/3/2 Channel Operation
• 4 Gauge Power and Ground Inputs
• Nickel-Plated Terminals

MA Audio HK10KA

10,000W Max, Class X (D) Monoblock Amplifier

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MA Audio HK10KA

10,000W Max, Class X (D) Monoblock Amplifier

(Special Order Item -- No Cancellations/Refunds) • Extreme Competition Class X (D) Monoblock Car Amplifier • 2500W x 1 chan. @ 4 ohm (14.1V) • 3500W x 1 chan. @ 4 ohm (17.5V) • 10000W x 1 chan. @ 1 ohm Max (17.5V)

(Special Order Item -- No Cancellations/Refunds) • Extreme Competition Class X (D) Monoblock Car Amplifier • 2500W x 1 chan. @ 4 ohm (14.1V) • 3500W x 1 chan. @ 4 ohm (17.5V) • 10000W x 1 chan. @ 1 ohm Max (17.5V)

Memphis 16-MC1500D

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Memphis 16-MC1500D

1500 X 1 @ 2ohm Class D Subwoofer Amplifier • Full MOSFET Design • Built in crossovers • Platinum Finish Wire Connections • Wired Remote Gain Control Included

1500 X 1 @ 2ohm Class D Subwoofer Amplifier • Full MOSFET Design • Built in crossovers • Platinum Finish Wire Connections • Wired Remote Gain Control Included

Hifonics XXV-THOR

Class D Monoblock Amplifier with Remote

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Hifonics XXV-THOR

Class D Monoblock Amplifier with Remote

XXV Series 1-Channel Class D Car Amplifier • 1200W x 1 chan. @ 4 ohm • 2300W x 1 chan. @ 2 ohm • 3000W x 1 chan. @ 1 ohm • MOSFET power supply • DC, Short Circuit, and Overload Protection circuitry

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XXV Series 1-Channel Class D Car Amplifier • 1200W x 1 chan. @ 4 ohm • 2300W x 1 chan. @ 2 ohm • 3000W x 1 chan. @ 1 ohm • MOSFET power supply • DC, Short Circuit, and Overload Protection circuitry

MTX Audio JackHammer JH600 + Amplifier Kit

1200W Max, Class D Monoblock Jack Hammer Series Amplifier w/ 4 Gauge Amplifier Kit

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MTX Audio JackHammer JH600 + Amplifier Kit

1200W Max, Class D Monoblock Jack Hammer Series Amplifier w/ 4 Gauge Amplifier Kit

JackHammer Series Class D Monoblock Car Amplifier • 350W x 1 chan. @ 4 ohm • 600W x 1 chan. @ 2 ohm • 1200W x 1 chan. Max • Stackable configuration • Built-in active fan cooling • Includes 4 AWG Amplifier Kit

JackHammer Series Class D Monoblock Car Amplifier • 350W x 1 chan. @ 4 ohm • 600W x 1 chan. @ 2 ohm • 1200W x 1 chan. Max • Stackable configuration • Built-in active fan cooling • Includes 4 AWG Amplifier Kit

JVC KS-AR9501D

1500W RMS, Monoblock Class D Digital Amplifier - Ultra Compact Design

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JVC KS-AR9501D

1500W RMS, Monoblock Class D Digital Amplifier - Ultra Compact Design

JVC Arsenal Single-Channel Monoblock Class D Car Amplifier • 500W @ 4 Ohm • 1000W @ 2 Ohm • 1500W @ 1 Ohm • 1800W Max • Illuminated Blue LED • Variable Tuned Bass EQ • Speaker-Level Inputs • 4-Way Protection

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JVC Arsenal Single-Channel Monoblock Class D Car Amplifier • 500W @ 4 Ohm • 1000W @ 2 Ohm • 1500W @ 1 Ohm • 1800W Max • Illuminated Blue LED • Variable Tuned Bass EQ • Speaker-Level Inputs • 4-Way Protection

Pioneer Premier PRS-D2000T

Premier PRS ICE 2-Channel Class D ICEpower Technology Amplifier

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Pioneer Premier PRS-D2000T

Premier PRS ICE 2-Channel Class D ICEpower Technology Amplifier

1200 watt Max, Bridgeable 2-Channel Class FD (Full-Range Class D) Amplifier • 150 watts x 2 chan. @ 4 ohm RMS • 600 watts x 1 chan. @ 4 ohm Bridged RMS • CEA-2006 Compliant • Energy Saving Design • Compact Chassis • High Pass and Low Pass Variable Crossover

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1200 watt Max, Bridgeable 2-Channel Class FD (Full-Range Class D) Amplifier • 150 watts x 2 chan. @ 4 ohm RMS • 600 watts x 1 chan. @ 4 ohm Bridged RMS • CEA-2006 Compliant • Energy Saving Design • Compact Chassis • High Pass and Low Pass Variable Crossover

Planet Audio AP2000D

2000W Max, Apocalypse Series Class D Monoblock Amplifier with Remote

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Planet Audio AP2000D

2000W Max, Apocalypse Series Class D Monoblock Amplifier with Remote

Apocalypse Series Class D Monoblock Car Amplifier • 2000W Max. • Switchable Phase Shift • Remote Subwoofer Control • Heavy-Duty Screw Terminals • Chrome-Plated Connections • Strapping Capabilities

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Apocalypse Series Class D Monoblock Car Amplifier • 2000W Max. • Switchable Phase Shift • Remote Subwoofer Control • Heavy-Duty Screw Terminals • Chrome-Plated Connections • Strapping Capabilities

Hifonics XX-Maxximus (SPECIAL ORDER ONLY - NO CANCELLATIONS)

10 Kilowatt Amplifier... 10,000 watts RMS!

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Hifonics XX-Maxximus (SPECIAL ORDER ONLY - NO CANCELLATIONS)

10 Kilowatt Amplifier... 10,000 watts RMS!

10 Kilowatt Ultra-D Class Amplifier • 10,000W RMS x 1 @ 2 Ohm • High-Speed MOSFET Output Devices • Versa-Cross Crossover • Illuminated Logo • Endcaps Included • Quad 2-Gauge Power Terminals

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10 Kilowatt Ultra-D Class Amplifier • 10,000W RMS x 1 @ 2 Ohm • High-Speed MOSFET Output Devices • Versa-Cross Crossover • Illuminated Logo • Endcaps Included • Quad 2-Gauge Power Terminals

Autotek ATX3000.2 (Factory Refurbished)

3000W Max 2-Channel Class AB ATX Series Amplifier

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Autotek ATX3000.2 (Factory Refurbished)

3000W Max 2-Channel Class AB ATX Series Amplifier

2-Channel Class AB ATX Series Car Amplifier • PWM MOSFET Power Supply • Bass Boost • Soft Start Turn-On • High Level Inputs • Preamp RCA Outputs • 4-Way System Protection Circuitry • Flat Panel Heatsink Design • Subsonic Filter

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2-Channel Class AB ATX Series Car Amplifier • PWM MOSFET Power Supply • Bass Boost • Soft Start Turn-On • High Level Inputs • Preamp RCA Outputs • 4-Way System Protection Circuitry • Flat Panel Heatsink Design • Subsonic Filter

Rockford Fosgate P1000X5D

1000W RMS 5-Channel Class D Punch Series High Efficiency Amplifier

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Rockford Fosgate P1000X5D

1000W RMS 5-Channel Class D Punch Series High Efficiency Amplifier

Punch Series Class D Full Range 5-Channel Car Amplifier • Punch EQ 2 Variable Bass Boost • MOSFET Power Supply • Variable High/Low Pass Crossovers • Infrasonic Filter • CEA-2006 Compliant

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Punch Series Class D Full Range 5-Channel Car Amplifier • Punch EQ 2 Variable Bass Boost • MOSFET Power Supply • Variable High/Low Pass Crossovers • Infrasonic Filter • CEA-2006 Compliant

Alpine PDX-F4(Open Box Incomplete Used Functional)

400W PDX Series 4-Channel Power Density Digital Class D Car Amplifier(Open Box Incomplete Used Functional)

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Alpine PDX-F4(Open Box Incomplete Used Functional)

400W PDX Series 4-Channel Power Density Digital Class D Car Amplifier(Open Box Incomplete Used Functional)

• Item Condition: Open Box, Missing Parts, Acceptable, Used
• RMS Power: 100W x 4-Chan. @ 4 ohm
• 400 Watts RMS
• Class D
• Variable High-Pass and Low-Pass Filter
• Blue LED Power/Status Indicator
• Compact Size

• Item Condition: Open Box, Missing Parts, Acceptable, Used
• RMS Power: 100W x 4-Chan. @ 4 ohm
• 400 Watts RMS
• Class D
• Variable High-Pass and Low-Pass Filter
• Blue LED Power/Status Indicator
• Compact Size

EXCLUSIVE

Infinity Subwoofer + Kicker Amplifier Upgrade w/ Sub Enclosure

REF1200S 1000W 12" Shallow Mount Subwoofer + KX200.2 KX Series 2-Ch Amp + XKIT82 2-Ch 8G Amp Install Kit + 12SME 12" Sub Enclosure

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Infinity Subwoofer + Kicker Amplifier Upgrade w/ Sub Enclosure

REF1200S 1000W 12" Shallow Mount Subwoofer + KX200.2 KX Series 2-Ch Amp + XKIT82 2-Ch 8G Amp Install Kit + 12SME 12" Sub Enclosure

• Subwoofer: RMS Power: 250W
• Amplifier: 50W x 2 Chan. @ 4 ohm
• 100W x 2 Chan. @ 2 ohm
• 8 Gauge 2-Channel Complete Amplifier Installation Kit
• 12" Single Sealed Ultra Slim Series Subwoofer Enclosure

• Subwoofer: RMS Power: 250W
• Amplifier: 50W x 2 Chan. @ 4 ohm
• 100W x 2 Chan. @ 2 ohm
• 8 Gauge 2-Channel Complete Amplifier Installation Kit
• 12" Single Sealed Ultra Slim Series Subwoofer Enclosure

Massive Audio D 16000

16,000W Max "The Dragon" 1/2 Channel Monoblock D Block Series Car Amplifier

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Massive Audio D 16000

16,000W Max "The Dragon" 1/2 Channel Monoblock D Block Series Car Amplifier

• RMS: 1900W x 1 @ 4 ohm, 3000W x 1 @ 2 ohm, 4000W x 1 @ 1 ohm
• Total RMS Power: 4000W
• CEA-2006 Compliant
• Bass Boost: 0-12 dB
• Linkable with RCA
• Dimensions: 19-15/16"L x 6-1/2"W x 4-1/4"H

• RMS: 1900W x 1 @ 4 ohm, 3000W x 1 @ 2 ohm, 4000W x 1 @ 1 ohm
• Total RMS Power: 4000W
• CEA-2006 Compliant
• Bass Boost: 0-12 dB
• Linkable with RCA
• Dimensions: 19-15/16"L x 6-1/2"W x 4-1/4"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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