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1979 Porsche 928

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Single, 1-channel monoblock sub amplifiers for when you add a sub

Overview Upgrade your Speakers Add a Subwoofer Add an Amplifier Digital Sound Processors Audio Installation & Accessories Add a Backup Camera Dads & Grads Sale

Amplifiers for Powering a Sub for 1979 Porsche 928

Some vehicles require an amp bypass module, a line-output converter like the NVX XLCA2 or AudioControl LC2i, or a DSP to integrate with your factory radio and avoid bass roll-off. Bass roll-off occurs when a factory radio's crossover is designed only for the original equipment speakers, resulting in a not complete signal being sent to your new aftermarket amp.

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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.
Power Series (17)
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X Series (1)
XFL Series (1)
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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Kenwood eXcelon XR1001-1 + High Quality NVX Amp Kit

2000W Max (1000W RMS) XR Series 2-ohm Stable Class-D Monoblock Amplifier w/ Bass Knob Included

XR1001-1, XKIT42 big
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Kenwood eXcelon XR1001-1 + High Quality NVX Amp Kit

2000W Max (1000W RMS) XR Series 2-ohm Stable Class-D Monoblock Amplifier w/ Bass Knob Included

• 500 Watts RMS x 1 @ 4 ohm
• 1000 Watts RMS x 1 @ 2 ohm
• Total Peak Power: 2000 Watts
• CEA-2006 Compliant
• Bass Knob Included
• Aluminum Heatsink
• Dimensions: 12-5/8" W x 6-5/8" L x 2" H

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• 500 Watts RMS x 1 @ 4 ohm
• 1000 Watts RMS x 1 @ 2 ohm
• Total Peak Power: 2000 Watts
• CEA-2006 Compliant
• Bass Knob Included
• Aluminum Heatsink
• Dimensions: 12-5/8" W x 6-5/8" L x 2" H

DS18 SMD-2000.1D with NVX 1/0 Gauge Amp Kit

2000W RMS Class D SMD Series Monoblock Car Amplifier with Bass Remote

SMD20001D_XKIT02 big
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DS18 SMD-2000.1D with NVX 1/0 Gauge Amp Kit

2000W RMS Class D SMD Series Monoblock Car Amplifier with Bass Remote

• 800 watts x 1 channel @ 4 ohm
• 1400 watts x 1 channel @ 2 ohm
• 2000 watts x 1 channel @ 1 ohm
• Total RMS Power: 2000 watts
• Class D 1 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

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$780.11

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• 800 watts x 1 channel @ 4 ohm
• 1400 watts x 1 channel @ 2 ohm
• 2000 watts x 1 channel @ 1 ohm
• Total RMS Power: 2000 watts
• Class D 1 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

NVX - Worth the Envy - Direct to Consumer Car Audio

Alpine KTA-200M with NVX 8 Gauge Amp Kit

200W RMS Class D Monoblock Subwoofer Amplifier

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Alpine KTA-200M with NVX 8 Gauge Amp Kit

200W RMS Class D Monoblock Subwoofer Amplifier

• Power stack Capable
• CTA-2006 Compliant
• Fits in the open space behind Alpine’s iLX-W650
• 100W x 1 RMS
• 200W x 1 RMS
• 400W x 1 DPP
• Includes Amplifier Wiring Kit

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• Power stack Capable
• CTA-2006 Compliant
• Fits in the open space behind Alpine’s iLX-W650
• 100W x 1 RMS
• 200W x 1 RMS
• 400W x 1 DPP
• Includes Amplifier Wiring Kit

Hertz HCP 1MDK with NVX 4 Gauge Amp Kit

2480 Peak Monoblock Class-D Marine Car Audio Amplifier

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Hertz HCP 1MDK with NVX 4 Gauge Amp Kit

2480 Peak Monoblock Class-D Marine Car Audio Amplifier

• 600 watts x 1 channel @ 4 ohm
• 1100 watts x 1 channel @ 2 ohm
• Total RMS Power: 1240 watts
• Corrosion Protection
• Class D 2 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

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• 600 watts x 1 channel @ 4 ohm
• 1100 watts x 1 channel @ 2 ohm
• Total RMS Power: 1240 watts
• Corrosion Protection
• Class D 2 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

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Rockford Fosgate Punch P300X1 + Free Belva BAK82 8 Gauge Amp Wiring Kit

300W RMS Punch Series Monoblock Class AB Car Power Amplifier + Belva BAK82

P300X1, BAK82BL big
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Rockford Fosgate Punch P300X1 + Free Belva BAK82 8 Gauge Amp Wiring Kit

300W RMS Punch Series Monoblock Class AB Car Power Amplifier + Belva BAK82

• RMS: 200W x 1 @ 4 ohm, 300W x 1 @ 2 ohm
• Total RMS Power: 300W
• Built-in NOMAD Circuit Protects Amplifier
• Tuned Bass EQ: 0 to +18 dB
• Cast Aluminum Heatsink with Dynamic Thermal Management
• Dimensions: 9-7/8"L x 7-3/4"W x 2-3/8"H

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• RMS: 200W x 1 @ 4 ohm, 300W x 1 @ 2 ohm
• Total RMS Power: 300W
• Built-in NOMAD Circuit Protects Amplifier
• Tuned Bass EQ: 0 to +18 dB
• Cast Aluminum Heatsink with Dynamic Thermal Management
• Dimensions: 9-7/8"L x 7-3/4"W x 2-3/8"H

Massive Audio T2 with Amplifier Wiring Kit

800 Watts RMS @ 1 Ohm Monoblock Amplifier + NVX 4 Gauge Amp Wiring Kit

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Massive Audio T2 with Amplifier Wiring Kit

800 Watts RMS @ 1 Ohm Monoblock Amplifier + NVX 4 Gauge Amp Wiring Kit

• 200 Watts RMS x 1 @ 4 ohm
• 400 Watts RMS x 1 @ 2 ohm
• 800 Watts RMS x 1 @ 1 ohm
• Total Peak Power: 1600 Watts
• CEA-2006 Compliant/Preamp Outputs/LPF
• 4.25"W x 7.99"L x1.6 "H
• Includes Amplifier Wiring Kit

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• 200 Watts RMS x 1 @ 4 ohm
• 400 Watts RMS x 1 @ 2 ohm
• 800 Watts RMS x 1 @ 1 ohm
• Total Peak Power: 1600 Watts
• CEA-2006 Compliant/Preamp Outputs/LPF
• 4.25"W x 7.99"L x1.6 "H
• Includes Amplifier Wiring Kit

Deaf Bonce MFA 1.1000 with Belva 4 Gauge Amp Kit

1000W RMS Class D Machete Series Monoblock Subwoofer Amplifier with Bass Remote

MFA11000_BAK42 big
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Deaf Bonce MFA 1.1000 with Belva 4 Gauge Amp Kit

1000W RMS Class D Machete Series Monoblock Subwoofer Amplifier with Bass Remote

• 430 watts x 1 channel @ 4 ohm
• 710 watts x 1 channel @ 2 ohm
• 1000 watts x 1 channel @ 1 ohm
• Total RMS Power: 1000 watts
• Class D 1 ohm Stable Monoblock Amplifier

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• 430 watts x 1 channel @ 4 ohm
• 710 watts x 1 channel @ 2 ohm
• 1000 watts x 1 channel @ 1 ohm
• Total RMS Power: 1000 watts
• Class D 1 ohm Stable Monoblock Amplifier

Massive Audio T2 with Belva 8 Gauge Amp Kit

1600W Peak (800W RMS) Trident Series Class D 1 Ohm Powersports Monoblock Amplifier

MAT2_BAK82 big
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Massive Audio T2 with Belva 8 Gauge Amp Kit

1600W Peak (800W RMS) Trident Series Class D 1 Ohm Powersports Monoblock Amplifier

• 200 watts x 1 channel @ 4 ohm
• 400 watts x 1 channel @ 2 ohm
• 800 watts x 1 channel @ 1 ohm
• Total RMS Power: 800 watts
• Class D 1 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

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• 200 watts x 1 channel @ 4 ohm
• 400 watts x 1 channel @ 2 ohm
• 800 watts x 1 channel @ 1 ohm
• Total RMS Power: 800 watts
• Class D 1 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

Sound Extreme by ECOXGEAR SEI-AMP30011 with NVX 8 Gauge Amp Kit

300W RMS Class-D Monoblock High Definition Marine Amplifier

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Sound Extreme by ECOXGEAR SEI-AMP30011 with NVX 8 Gauge Amp Kit

300W RMS Class-D Monoblock High Definition Marine Amplifier

• 300 watts x 1 channel @ 4 ohm
• Total RMS Power: 300 watts
• Class D 4 ohm Stable Monoblock Amplifier
• Marine-grade sealed die-cast aluminum chassis
• Includes Amplifier Wiring Kit

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• 300 watts x 1 channel @ 4 ohm
• Total RMS Power: 300 watts
• Class D 4 ohm Stable Monoblock Amplifier
• Marine-grade sealed die-cast aluminum chassis
• Includes Amplifier Wiring Kit

Crunch DR-1325.1 with Belva 8 Gauge Amp Kit

1325W Peak Class AB V-Drive Series Monoblock Car Subwoofer Amplifier with Bass Remote

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Crunch DR-1325.1 with Belva 8 Gauge Amp Kit

1325W Peak Class AB V-Drive Series Monoblock Car Subwoofer Amplifier with Bass Remote

• 650 watts x 1 channel @ 4 ohm
• 1325 watts x 1 channel @ 2 ohm
• Total peak power output: 1325 watts
• Class A/B 2 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

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• 650 watts x 1 channel @ 4 ohm
• 1325 watts x 1 channel @ 2 ohm
• Total peak power output: 1325 watts
• Class A/B 2 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

Alpine KTA-200M - Open Box, Great

200 watts RMS Class D Monoblock Subwoofer Amplifier

KTA-200M big
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Alpine KTA-200M - Open Box, Great

200 watts RMS Class D Monoblock Subwoofer Amplifier

• 200 watts x 1 channel @ 4 ohm
• 200 watts x 1 channel @ 2 ohm
• Total RMS Power: 200 watts
• Class D 2 ohm Stable Monoblock Amplifier

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List price $300.00
-29% $212.46

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Diamond Audio MICRO81U with NVX 8 Gauge Amp Kit

600W RMS Full Range Class-D Monoblock Digital Amplifier

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Diamond Audio MICRO81U with NVX 8 Gauge Amp Kit

600W RMS Full Range Class-D Monoblock Digital Amplifier

• 175 watts x 1 channel @ 4 ohm
• 300 watts x 1 channel @ 2 ohm
• 600 watts x 1 channel @ 1 ohm
• Total RMS Power: 600 watts
• Class D 2 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

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61
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• 175 watts x 1 channel @ 4 ohm
• 300 watts x 1 channel @ 2 ohm
• 600 watts x 1 channel @ 1 ohm
• Total RMS Power: 600 watts
• Class D 2 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

Kenwood KAC-9106D with NVX 4 Gauge Amp Kit

2000W RMS Performance Series Class-D Monoblock Amplifier

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Kenwood KAC-9106D with NVX 4 Gauge Amp Kit

2000W RMS Performance Series Class-D Monoblock Amplifier

• 500 watts x 1 channel @ 4 ohm
• 1000 watts x 1 channel @ 2 ohm
• Total RMS Power: 1000 watts
• Class D 2 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

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• 500 watts x 1 channel @ 4 ohm
• 1000 watts x 1 channel @ 2 ohm
• Total RMS Power: 1000 watts
• Class D 2 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

Rockford Fosgate M2-500X1 with Amplifier Wiring Kit

500 Watt Monoblock marine amplifier

M2-500X1, XKIT42 big
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Rockford Fosgate M2-500X1 with Amplifier Wiring Kit

500 Watt Monoblock marine amplifier

• 300 Watts x 1 @ 4 ohm
• 500 Watts x 1 @ 2 ohm
• Element Ready™ design protects against outdoor exposure
• Conformal coated circuit board
• Top Mounted Control Panel

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• 300 Watts x 1 @ 4 ohm
• 500 Watts x 1 @ 2 ohm
• Element Ready™ design protects against outdoor exposure
• Conformal coated circuit board
• Top Mounted Control Panel

Cerwin-Vega VCU81 with NVX 4 Gauge Amp Kit

Vega Series 600W Class D Monoblock Car Audio Amplifier

VCU81, XKIT42 big
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Cerwin-Vega VCU81 with NVX 4 Gauge Amp Kit

Vega Series 600W Class D Monoblock Car Audio Amplifier

• Vega Series Class D Mono 600W Amplifier
• RMS Power: 400W x 1 @ 2 Ohm
• RMS Power: 240W x 1 @ 4 Ohm
• MAX Power: 600W x 1 @ 1 Ohm
• Surface Mount Component Technology
• Compact Universal All-Weather Application
• Variable/Switchable Crossovers On Multi-Channel Models

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• Vega Series Class D Mono 600W Amplifier
• RMS Power: 400W x 1 @ 2 Ohm
• RMS Power: 240W x 1 @ 4 Ohm
• MAX Power: 600W x 1 @ 1 Ohm
• Surface Mount Component Technology
• Compact Universal All-Weather Application
• Variable/Switchable Crossovers On Multi-Channel Models

Kicker CXA400.1 (46CXA4001T) with Bass Remote Control

400W RMS CX-Series Class-D Monoblock Amplifier

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Kicker CXA400.1 (46CXA4001T) with Bass Remote Control

400W RMS CX-Series Class-D Monoblock Amplifier

• 150 watts x 1 channel @ 4 ohm
• 300 watts x 1 channel @ 2 ohm
• 400 watts x 1 channel @ 1 ohm
• Class D 1 ohm Stable Monoblock Amplifier
Complete level or volume control that can be remotely mounted nearly anywhere
• Convenient Under-dash mount
• Includes remote knob, cable, mounting clip, mounting screws

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• 150 watts x 1 channel @ 4 ohm
• 300 watts x 1 channel @ 2 ohm
• 400 watts x 1 channel @ 1 ohm
• Class D 1 ohm Stable Monoblock Amplifier
Complete level or volume control that can be remotely mounted nearly anywhere
• Convenient Under-dash mount
• Includes remote knob, cable, mounting clip, mounting screws

Diamond Audio DMD500.1D with NVX 4 Gauge Amp Kit

500W RMS DMD Series Monoblock Class-D Amplifier

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Diamond Audio DMD500.1D with NVX 4 Gauge Amp Kit

500W RMS DMD Series Monoblock Class-D Amplifier

• 340 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
• Includes Amplifier Wiring Kit

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• 340 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
• Includes Amplifier Wiring Kit

JVC KS-DR2001D with NVX 8 Gauge Amp Kit

300W RMS KS Series Class-D Marine/Powersports Monoblock Amplifier

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JVC KS-DR2001D with NVX 8 Gauge Amp Kit

300W RMS KS Series Class-D Marine/Powersports Monoblock Amplifier

• 200 watts x 1 channel @ 4 ohm
• 300 watts x 1 channel @ 2 ohm
• Total RMS Power: 300 watts
• CEA-2006 Compliant
• Class D 2 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

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• 200 watts x 1 channel @ 4 ohm
• 300 watts x 1 channel @ 2 ohm
• Total RMS Power: 300 watts
• CEA-2006 Compliant
• Class D 2 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

Rockford Fosgate M5-1000X1with NVX 8 Gauge Amp Kit

750W RMS M5-Series Class-BD Monoblock Marine Amplifier

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Rockford Fosgate M5-1000X1with NVX 8 Gauge Amp Kit

750W RMS M5-Series Class-BD Monoblock Marine Amplifier

• 500 watts x 1 channel @ 4 ohm
• 750 watts x 1 channel @ 2 ohm
• 1000 watts x 1 channel @ 1 ohm (Dynamic Power)
• Total RMS Power: 750 watts
• Class BD 1 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

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• 500 watts x 1 channel @ 4 ohm
• 750 watts x 1 channel @ 2 ohm
• 1000 watts x 1 channel @ 1 ohm (Dynamic Power)
• Total RMS Power: 750 watts
• Class BD 1 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

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Rockford Fosgate Punch P300X1 with Amplifier Wiring Kit

300W RMS Punch Series Monoblock Class AB Car Power Amplifier

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Rockford Fosgate Punch P300X1 with Amplifier Wiring Kit

300W RMS Punch Series Monoblock Class AB Car Power Amplifier

• RMS: 200W x 1 @ 4 ohm, 300W x 1 @ 2 ohm
• Total RMS Power: 300W
• Built-in NOMAD Circuit Protects Amplifier
• Tuned Bass EQ: 0 to +18 dB
• Cast Aluminum Heatsink with Dynamic Thermal Management
• Dimensions: 9-7/8"L x 7-3/4"W x 2-3/8"H

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• RMS: 200W x 1 @ 4 ohm, 300W x 1 @ 2 ohm
• Total RMS Power: 300W
• Built-in NOMAD Circuit Protects Amplifier
• Tuned Bass EQ: 0 to +18 dB
• Cast Aluminum Heatsink with Dynamic Thermal Management
• Dimensions: 9-7/8"L x 7-3/4"W x 2-3/8"H

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    FAQ for Monoblock Sub Amplifiers in 1979 928

    Q: Can I upgrade or change the Monoblock Sub Amplifiers in 1979 Porsche 928?

    A: Yes this page includes all the best Monoblock Sub Amplifiers that work in your 928.

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