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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)
Zeus Series (53)
X Series (38)
Prime Series (28)
CX Series (27)
V Series (27)
XDM Series (26)
SALT Series (24)
N Series (23)
RD Series (22)
SFB Series (22)
HD Series (21)
JAD Series (19)
Kappa Series (19)
JD Series (17)
KX Series (17)
MD Series (16)
S Series (16)
XD-v2 Series (16)
ONYX Series (14)
Phantom Series (14)
Picasso-Nano Series (14)
Reference Series (14)
V Power Series (14)
VXi Series (14)
Brutus X 14 Series (13)
Marine V Series (13)
Razor Series (13)
GM Digital Series (12)
Machete Series (12)
Slash v3 Series (12)
Apocalypse Series (11)
BAMF Series (11)
HCP Series (11)
Mt. Olympus Series (11)
Tarantula Series (11)
Bass Series (10)
Black Ice Series (10)
iON Series (10)
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Power Pack Series (10)
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HED Series (8)
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COLOSSUS Series (7)
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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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JL Audio Slash v2 500/1v2 Open Box

(Open Box) 500W RMS, Slash Version 2 Series Class D Monoblock Amplifier

500/1v2 big DISCONTINUED
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JL Audio Slash v2 500/1v2 Open Box

(Open Box) 500W RMS, Slash Version 2 Series Class D Monoblock Amplifier

Slash v2 Series Class D Monoblock Car Amplifier • 500W x 1 chan. @ 4 ohm • MOSFET power supply • Differential-balanced with RCA jack inputs • Preamp RCA outputs

Slash v2 Series Class D Monoblock Car Amplifier • 500W x 1 chan. @ 4 ohm • MOSFET power supply • Differential-balanced with RCA jack inputs • Preamp RCA outputs

JL Audio Slash 600/1v3- FACTORY REFURBISHED

600W RMS Slash Version 3 Series Class D Monoblock Amplifier

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JL Audio Slash 600/1v3- FACTORY REFURBISHED

600W RMS Slash Version 3 Series Class D Monoblock Amplifier

• Peak: 600W x 1 @ 4 ohm, 600W x 1 @ 3 ohm, 600W x 1 @ 2, 600W x 1 @ 1.5 ohm
• Total RMS Power: 600W
• R.I.P.S. Power Supply
• Parametric Bass EQ
• Fully Variable Infrasonic Filter
• Dimensions: 13-7/16"L x 9-1/4"W x 2-3/8"H

• Peak: 600W x 1 @ 4 ohm, 600W x 1 @ 3 ohm, 600W x 1 @ 2, 600W x 1 @ 1.5 ohm
• Total RMS Power: 600W
• R.I.P.S. Power Supply
• Parametric Bass EQ
• Fully Variable Infrasonic Filter
• Dimensions: 13-7/16"L x 9-1/4"W x 2-3/8"H

JBL Stadium 4

480W RMS Stadium Series Class-D 4-Channel Amplifier

Stadium 4 big DISCONTINUED
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JBL Stadium 4

480W RMS Stadium Series Class-D 4-Channel Amplifier

• 100 watts x 4 channel @ 4 ohm
• 120 watts x 4 channel @ 2 ohm
• Bridged: 240 watts x 2 channel @ 4 ohm
• Total RMS Power: 480 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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• 100 watts x 4 channel @ 4 ohm
• 120 watts x 4 channel @ 2 ohm
• Bridged: 240 watts x 2 channel @ 4 ohm
• Total RMS Power: 480 watts
• Class D 2 ohm Stable 4-Channel Amplifier

Soundstream AR1-7500D

7500W Peak (2300W RMS) Class D Arachnid Series Monoblock Amplifier with Bass Remote

AR1-7500D big DISCONTINUED
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Soundstream AR1-7500D

7500W Peak (2300W RMS) Class D Arachnid Series Monoblock Amplifier with Bass Remote

• 750 watts x 1 channel @ 4 ohm
• 1300 watts x 1 channel @ 2 ohm
• 2300 watts x 1 channel @ 1 ohm
• Total RMS Power: 2300 watts
• Class D 1 ohm Stable Monoblock Amplifier

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• 750 watts x 1 channel @ 4 ohm
• 1300 watts x 1 channel @ 2 ohm
• 2300 watts x 1 channel @ 1 ohm
• Total RMS Power: 2300 watts
• Class D 1 ohm Stable Monoblock Amplifier

JL Audio XD400/4 Open Box

400W, 4-Channel Class D XD Series Full-Range Car Amplifier

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JL Audio XD400/4 Open Box

400W, 4-Channel Class D XD Series Full-Range Car Amplifier

XD Series 4-Channel Class D Car Amplifier • 100W x 4-Chan @ 2 Ohm • NexD Ultra-High Speed Topology • Preamp RCA Outputs • Variable High/Low-Pass Filter • 3-Way System Protection Circuitry • Remote Bass Input

XD Series 4-Channel Class D Car Amplifier • 100W x 4-Chan @ 2 Ohm • NexD Ultra-High Speed Topology • Preamp RCA Outputs • Variable High/Low-Pass Filter • 3-Way System Protection Circuitry • Remote Bass Input

Cerwin-Vega H1500.1D

1500W RMS Digital Monoblock Class D Amplifier

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Cerwin-Vega H1500.1D

1500W RMS Digital Monoblock Class D Amplifier

• 600 Watss @ 4 ohm
• 1000 Watts @ 2 ohm
• 1500 Watts @ 1 ohm
• Total RMS Power: 1500 Watts
• SMD technology on 4 layers FR4 PC board

• 600 Watss @ 4 ohm
• 1000 Watts @ 2 ohm
• 1500 Watts @ 1 ohm
• Total RMS Power: 1500 Watts
• SMD technology on 4 layers FR4 PC board

DS18 CANDY-X4B

1600W Peak (480W RMS) Candy-X Series Full Range Class D 4-Channel Amplifier

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DS18 CANDY-X4B

1600W Peak (480W RMS) Candy-X Series Full Range Class D 4-Channel Amplifier

• 80 watts x 4 channel @ 4 ohm
• 120 watts x 4 channel @ 2 ohm
• Bridged: 240 watts x 2 channel @ 4 ohm
• Total RMS Power: 480 watts
• Class D Stable 4-Channel-Channel Amplifier

• 80 watts x 4 channel @ 4 ohm
• 120 watts x 4 channel @ 2 ohm
• Bridged: 240 watts x 2 channel @ 4 ohm
• Total RMS Power: 480 watts
• Class D Stable 4-Channel-Channel Amplifier

JL Audio Slash 600/1v3 LIKE NEW DAMAGED PACKAGING

600W RMS Monoblock Slash v3 Series Class D Car Amplifier

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JL Audio Slash 600/1v3 LIKE NEW DAMAGED PACKAGING

600W RMS Monoblock Slash v3 Series Class D Car Amplifier

Like new Damaged Package
• Peak: 600W x 1 @ 4 ohm, 600W x 1 @ 3 ohm, 600W x 1 @ 2, 600W x 1 @ 1.5 ohm
• Total RMS Power: 600W
• R.I.P.S. Power Supply
• Parametric Bass EQ
• Fully Variable Infrasonic Filter
• Dimensions: 13.40"L x 9.25"W x 2.36"H

Like new Damaged Package
• Peak: 600W x 1 @ 4 ohm, 600W x 1 @ 3 ohm, 600W x 1 @ 2, 600W x 1 @ 1.5 ohm
• Total RMS Power: 600W
• R.I.P.S. Power Supply
• Parametric Bass EQ
• Fully Variable Infrasonic Filter
• Dimensions: 13.40"L x 9.25"W x 2.36"H

Infinity Reference 10001A (AMPRF10001AAM)

Reference Series 1000 Watts RMS Monoblock Class-D Amplifier

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Infinity Reference 10001A (AMPRF10001AAM)

Reference Series 1000 Watts RMS Monoblock Class-D Amplifier

• 600 Watts RMS x 1 @ 4 ohm
• 1000 Watts RMS x 1 @ 2 ohm
• Total Peak Power: 2000 Watts
• Preamp Outputs/LPF
• Variable Bass Boost
• 12-5/8"W x 2-3/16"D x 7-1/8"H

• 600 Watts RMS x 1 @ 4 ohm
• 1000 Watts RMS x 1 @ 2 ohm
• Total Peak Power: 2000 Watts
• Preamp Outputs/LPF
• Variable Bass Boost
• 12-5/8"W x 2-3/16"D x 7-1/8"H

Cerwin-Vega SPRO3100.1D

6200W Peak (3100W RMS) Stroker Pro Series Class-D Monoblock 1-Ohm Stable Amplifier with Bass Knob

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Cerwin-Vega SPRO3100.1D

6200W Peak (3100W RMS) Stroker Pro Series Class-D Monoblock 1-Ohm Stable Amplifier with Bass Knob

• RMS Power: 3100W x 1 @ 1 ohm
• Total Peak Power: 6200W
• Variable Low-Pass Filter (40-250 Hz, 24 dB/octave)
• Dimensions: 10.23"W x 20.78"L x 2.81"H

1

• RMS Power: 3100W x 1 @ 1 ohm
• Total Peak Power: 6200W
• Variable Low-Pass Filter (40-250 Hz, 24 dB/octave)
• Dimensions: 10.23"W x 20.78"L x 2.81"H

JL Audio Slash 1200/1v3 OPEN BOX COMPLETE

1200W RMS Monoblock Slash Series Class D Car Amplifier

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JL Audio Slash 1200/1v3 OPEN BOX COMPLETE

1200W RMS Monoblock Slash Series Class D Car Amplifier

Opened and Used
• RMS: 1200W x 1 @ 4 ohm, 1200W x 1 @ 2 ohm, 1200W x 1 @ 1.5 ohm
• Total RMS Power: 1200W
• R.I.P.S. (Regulated, Intelligent Power Supply)
• Parametric Bass Boost EQ
• Fully Variable Infrasonic Filter
• Dimensions: 19-3/4"L x 9-1/4"W x 2-3/8"H

Opened and Used
• RMS: 1200W x 1 @ 4 ohm, 1200W x 1 @ 2 ohm, 1200W x 1 @ 1.5 ohm
• Total RMS Power: 1200W
• R.I.P.S. (Regulated, Intelligent Power Supply)
• Parametric Bass Boost EQ
• Fully Variable Infrasonic Filter
• Dimensions: 19-3/4"L x 9-1/4"W x 2-3/8"H

Memphis VIV1500.1V2

1500W RMS SixFive Series Class-D Monoblock Amplifier

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Memphis VIV1500.1V2

1500W RMS SixFive Series Class-D Monoblock Amplifier

• 375 watts x 1 channel @ 4 ohm
• 750 watts x 1 channel @ 2 ohm
• 1500 watts x 1 channel @ 1 ohm
• Total RMS Power: 1500 watts
• Class D 1 ohm Stable Monoblock Amplifier

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• 375 watts x 1 channel @ 4 ohm
• 750 watts x 1 channel @ 2 ohm
• 1500 watts x 1 channel @ 1 ohm
• Total RMS Power: 1500 watts
• Class D 1 ohm Stable Monoblock Amplifier

Taramps MD 1200.1 - 4 OHM

1200W RMS MD Series Full Range 4-Ohm Stable Class-D Monoblock Amplifier

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Taramps MD 1200.1 - 4 OHM

1200W RMS MD Series Full Range 4-Ohm Stable Class-D Monoblock Amplifier

• 855 watts x 1 channel @ 8 ohm
• 1200 watts x 1 channel @ 4 ohm
• Total RMS Power: 1200 watts
• Class D 4 ohm Stable Monoblock Amplifier

• 855 watts x 1 channel @ 8 ohm
• 1200 watts x 1 channel @ 4 ohm
• Total RMS Power: 1200 watts
• Class D 4 ohm Stable Monoblock Amplifier

JL Audio XDM800/8-24V (XDM800/8)

800W RMS Class D XDM Series 8-Channel Car and Marine Amplifier for 24-Volt Systems

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JL Audio XDM800/8-24V (XDM800/8)

800W RMS Class D XDM Series 8-Channel Car and Marine Amplifier for 24-Volt Systems

• 75 watts x 8 channel @ 4 ohm
• 100 watts x 8 channel @ 2 ohm
• Bridged: 200 watts x 4 channel @ 4 ohm
• Total RMS Power: 800 watts
• Class D 2 ohm Stable 8-Channel-Channel Amplifier

• 75 watts x 8 channel @ 4 ohm
• 100 watts x 8 channel @ 2 ohm
• Bridged: 200 watts x 4 channel @ 4 ohm
• Total RMS Power: 800 watts
• Class D 2 ohm Stable 8-Channel-Channel Amplifier

JL Audio XDM400/4 (Open Box, Like New)

400W RMS Class D XDM Series 4 Channel Car and Marine Amplifier

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JL Audio XDM400/4 (Open Box, Like New)

400W RMS Class D XDM Series 4 Channel Car and Marine Amplifier

• 75 watts x 4 channel @ 4 ohm
• 100 watts x 4 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class D 2 ohm Stable 4-Channel Amplifier

• 75 watts x 4 channel @ 4 ohm
• 100 watts x 4 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class D 2 ohm Stable 4-Channel Amplifier

DS18 GFX-5K1

5000W RMS GFX Series Class-D Monoblock Amplifier with Bass Remote

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DS18 GFX-5K1

5000W RMS GFX Series Class-D Monoblock Amplifier with Bass Remote

• 2000 watts x 1 channel @ 4 ohm
• 3500 watts x 1 channel @ 2 ohm
• 5000 watts x 1 channel @ 1 ohm
• Total RMS Power: 5000 watts
• Class D 1 ohm Stable Monoblock Amplifier

• 2000 watts x 1 channel @ 4 ohm
• 3500 watts x 1 channel @ 2 ohm
• 5000 watts x 1 channel @ 1 ohm
• Total RMS Power: 5000 watts
• Class D 1 ohm Stable Monoblock Amplifier

DS18 ZR1000.1D

3000W RMS ZR Series Class D Monoblock Amplifier

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DS18 ZR1000.1D

3000W RMS ZR Series Class D Monoblock Amplifier

• 380 watts x 1 channel @ 4 ohm
• 650 watts x 1 channel @ 2 ohm
• 1000 watts x 1 channel @ 1 ohm
• Total RMS Power: 3000 watts
• Class D 1 ohm Stable Monoblock Amplifier

• 380 watts x 1 channel @ 4 ohm
• 650 watts x 1 channel @ 2 ohm
• 1000 watts x 1 channel @ 1 ohm
• Total RMS Power: 3000 watts
• Class D 1 ohm Stable Monoblock Amplifier

Memphis SRX500D.1

500W RMS Street Reference Series Class D Monoblock Amplifier with Bass Remote

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Memphis SRX500D.1

500W RMS Street Reference Series Class D Monoblock Amplifier with Bass Remote

• 350 watts x 1 channel @ 4 ohm
• 500 watts x 1 channel @ 2 ohm
• Total RMS Power: 500 watts
• Class D 2 ohm Stable Monoblock Amplifier

• 350 watts x 1 channel @ 4 ohm
• 500 watts x 1 channel @ 2 ohm
• Total RMS Power: 500 watts
• Class D 2 ohm Stable Monoblock Amplifier

JL Audio HD750/1 OPEN BOX COMPLETE

Monoblock Class D, HD Series Small Profile Car Amplifier with R.I.P.S. Technology

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JL Audio HD750/1 OPEN BOX COMPLETE

Monoblock Class D, HD Series Small Profile Car Amplifier with R.I.P.S. Technology

Item has been previously installed and used
• RMS: 750W x 1 @ 4 ohm, 750W x 1 @ 2 ohm, 750W x 1 @ 1 ohm
• Total RMS Power: 750W
• R.I.P.S. - Regulated, Intelligent Power Supply
• Single Cycle control - High Fidelity Class D
• 1 Pair of Buffered Preamps RCA Outputs
• Dimensions: 10-13/16"L x 8-1/4"W x 1-15/16"H

Item has been previously installed and used
• RMS: 750W x 1 @ 4 ohm, 750W x 1 @ 2 ohm, 750W x 1 @ 1 ohm
• Total RMS Power: 750W
• R.I.P.S. - Regulated, Intelligent Power Supply
• Single Cycle control - High Fidelity Class D
• 1 Pair of Buffered Preamps RCA Outputs
• Dimensions: 10-13/16"L x 8-1/4"W x 1-15/16"H

Memphis SRX750D.1

750W RMS Street Reference Series Class-D Monoblock Amplifier with Bass Remote

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Memphis SRX750D.1

750W RMS Street Reference Series Class-D Monoblock Amplifier with Bass Remote

• 400 watts x 1 channel @ 4 ohm
• 750 watts x 1 channel @ 2 ohm
• Total RMS Power: 750 watts
• Class D 2 ohm Stable Monoblock Amplifier

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• 400 watts x 1 channel @ 4 ohm
• 750 watts x 1 channel @ 2 ohm
• Total RMS Power: 750 watts
• Class D 2 ohm Stable Monoblock Amplifier

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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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