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1978 Cadillac Eldorado

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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 1978 Cadillac Eldorado

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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Brutus BRL Series (6)
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Reference Series (6)
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Stroker Pro Series (6)
V Series (6)
XDM Series (6)
Club Series (5)
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HD Series (5)
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Alpha Series (1)
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COLOSSUS Series (1)
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EV Series (1)
Excelon Motorsports Series (1)
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M Series (1)
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Street Reference (1)
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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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DS18 NXL-X1000.1D (Hydro) with NVX 4 Gauge Amp Kit

2000W Peak Class D HYDRO Series Monoblock Marine and Powersports Subwoofer Amplifier

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DS18 NXL-X1000.1D (Hydro) with NVX 4 Gauge Amp Kit

2000W Peak Class D HYDRO Series Monoblock Marine and Powersports Subwoofer Amplifier

• 350 watts x 1 channel @ 4 ohm
• 600 watts x 1 channel @ 2 ohm
• 100 watts x 1 channel @ 1 ohm
• Total RMS Power: 2000 watts
• IPX6 waterproof rating
• Class D 1 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

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-7% $691.62

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• 350 watts x 1 channel @ 4 ohm
• 600 watts x 1 channel @ 2 ohm
• 100 watts x 1 channel @ 1 ohm
• Total RMS Power: 2000 watts
• IPX6 waterproof rating
• Class D 1 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

Earthquake Sound PHS5000.1 with NVX 1/0 Gauge Amp Kit

5500W RMS PowerHouse Shredder Series Full Range Class-D Monoblock Amplifier with Bass Remote

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Earthquake Sound PHS5000.1 with NVX 1/0 Gauge Amp Kit

5500W RMS PowerHouse Shredder Series Full Range Class-D Monoblock Amplifier with Bass Remote

• 1600 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
• Includes Amplifier Wiring Kit

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• 1600 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
• Includes Amplifier Wiring Kit

NVX - Worth the Envy - Direct to Consumer Car Audio

Cerwin Vega SRPM750.1DW with NVX 8 Gauge Amp Kit

750W RMS Class-D Monoblock 2-Ohm Stable Marine Amplifier w/ Bass Knob Included - White

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Cerwin Vega SRPM750.1DW with NVX 8 Gauge Amp Kit

750W RMS Class-D Monoblock 2-Ohm Stable Marine Amplifier w/ Bass Knob Included - White

• 300 Watts RMS x 1 @ 4 ohm
• 500 Watts RMS x 1 @ 2 ohm
• 750W x 1 @ 1 Ohm
• Conformal Coating Protects Against Moisture
• Aluminum Heatsink
• Includes Amplifier Wiring Kit

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• 300 Watts RMS x 1 @ 4 ohm
• 500 Watts RMS x 1 @ 2 ohm
• 750W x 1 @ 1 Ohm
• Conformal Coating Protects Against Moisture
• Aluminum Heatsink
• Includes Amplifier Wiring Kit

Cerwin Vega B51 with NVX 4 Gauge Amp Kit

1000W Peak (500W RMS) Stealth Bomber Series Class-D Monoblock Amplifier with Bass Remote

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Cerwin Vega B51 with NVX 4 Gauge Amp Kit

1000W Peak (500W RMS) Stealth Bomber Series Class-D Monoblock Amplifier with Bass Remote

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

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-22% $391.66

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

Cerwin-Vega H1000.1D with NVX 4 Gauge Amp Kit

1400W Full Range Class D Monoblock Car Amplifier

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Cerwin-Vega H1000.1D with NVX 4 Gauge Amp Kit

1400W Full Range Class D Monoblock Car Amplifier

• 450 watts x 1 channel @ 4 ohm
• 700 watts x 1 channel @ 2 ohm
• 1000 watts x 1 channel @ 1 ohm
• Total RMS Power: 1000 watts Watts
• Includes Amplifier Wiring Kit

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• 450 watts x 1 channel @ 4 ohm
• 700 watts x 1 channel @ 2 ohm
• 1000 watts x 1 channel @ 1 ohm
• Total RMS Power: 1000 watts Watts
• Includes Amplifier Wiring Kit

Cerwin-Vega SPRO2100.1D with NVX 1/0 Gauge Amp Kit

2100W RMS Stroker PRO series Class-D Monoblock Amplifier with Bass Remote

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Cerwin-Vega SPRO2100.1D with NVX 1/0 Gauge Amp Kit

2100W RMS Stroker PRO series Class-D Monoblock Amplifier with Bass Remote

• 900 watts x 1 channel @ 4 ohm
• 1400 watts x 1 channel @ 2 ohm
• 2100 watts x 1 channel @ 1 ohm
• Total RMS Power: 2100 watts
• Class D 1 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

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• 900 watts x 1 channel @ 4 ohm
• 1400 watts x 1 channel @ 2 ohm
• 2100 watts x 1 channel @ 1 ohm
• Total RMS Power: 2100 watts
• Class D 1 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

Hertz HMP 1D with NVX 8 Gauge Amp Kit

300W RMS HMP Series Monoblock Class D 2-Ohm Marine/Powersports/Motorcycle Amplifier

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Hertz HMP 1D with NVX 8 Gauge Amp Kit

300W RMS HMP Series Monoblock Class D 2-Ohm Marine/Powersports/Motorcycle Amplifier

• 180 watts x 1 channel @ 4 ohm
• 300 watts x 1 channel @ 2 ohm
• Total RMS Power: 300 watts
• Water Jet Tested
• Class D 2 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

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-26% $379.99

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• 180 watts x 1 channel @ 4 ohm
• 300 watts x 1 channel @ 2 ohm
• Total RMS Power: 300 watts
• Water Jet Tested
• Class D 2 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

Kenwood eXcelon XM502-1 with NVX 8 Gauge Amp Kit

500W RMS XR Series Class-D Monoblock Marine Amplifier

XM5021_XKIT82 big
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Kenwood eXcelon XM502-1 with NVX 8 Gauge Amp Kit

500W RMS XR Series Class-D Monoblock Marine Amplifier

• 300 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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61
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-35% $354.99

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• 300 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

Kenwood eXcelon XM502-1 with Amplifier Wiring Kit

1000W Peak (500W RMS) Class D Monoblock Car Audio Amplifier

XM502-1, BAK82 big
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Kenwood eXcelon XM502-1 with Amplifier Wiring Kit

1000W Peak (500W RMS) Class D Monoblock Car Audio Amplifier

• 300 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

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• 300 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

Diamond Audio DXM1200.1D with NVX 4 Gauge Amp Kit

1200W RMS DXM Series Class-D Monoblock Amplifier

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Diamond Audio DXM1200.1D with NVX 4 Gauge Amp Kit

1200W RMS DXM Series Class-D Monoblock Amplifier

• 500 watts x 1 channel @ 4 ohm
• 800 watts x 1 channel @ 2 ohm
• 1200 watts x 1 channel @ 1 ohm
• Total RMS Power: 1200 watts
• Class D 1 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

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$811.66

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• 500 watts x 1 channel @ 4 ohm
• 800 watts x 1 channel @ 2 ohm
• 1200 watts x 1 channel @ 1 ohm
• Total RMS Power: 1200 watts
• Class D 1 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

Cerwin-Vega XED3001D with NVX 4 Gauge Amp Kit

400W Peak (300W RMS) XED Series Class-D Mono Channel Amplifier

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Cerwin-Vega XED3001D with NVX 4 Gauge Amp Kit

400W Peak (300W RMS) XED Series Class-D Mono Channel Amplifier

• 200 watts x 1 channel @ 4 ohm
• 300 watts x 1 channel @ 2 ohm
• Total RMS Power: 300 watts
• Class D Stable Monoblock Amplifier
• Includes NVX XKIT42 4 Gauge Amp 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
• Class D Stable Monoblock Amplifier
• Includes NVX XKIT42 4 Gauge Amp Wiring Kit

Diamond Audio DMD250.1D with Belva 4 Gauge Amp Kit

250W RMS DMD Series Class-D Monoblock Amplifier

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Diamond Audio DMD250.1D with Belva 4 Gauge Amp Kit

250W RMS DMD Series Class-D Monoblock Amplifier

• 160 watts x 4 channel @ 4 ohm
• 250 watts x 2 channel @ 2 ohm
• Total RMS Power: 250 watts
• Dampening Factor: > 250
• Class D 2 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

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• 160 watts x 4 channel @ 4 ohm
• 250 watts x 2 channel @ 2 ohm
• Total RMS Power: 250 watts
• Dampening Factor: > 250
• Class D 2 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

DC Audio 9.0k with NVX 1/0 Gauge Amp Kit

9000W Competition Series Class D Monoblock Amplifier

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DC Audio 9.0k with NVX 1/0 Gauge Amp Kit

9000W Competition Series Class D Monoblock Amplifier

• RMS Power: 2400W x 1 @ 4 ohm, 4800W x 1 @ 2 ohm, 9000W x 1 @ 1 ohm
• Strappable for Up to 18,000W of Power
• Variable Low Pass Filter

• Includes Amplifier Wiring Kit

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• RMS Power: 2400W x 1 @ 4 ohm, 4800W x 1 @ 2 ohm, 9000W x 1 @ 1 ohm
• Strappable for Up to 18,000W of Power
• Variable Low Pass Filter

• Includes Amplifier Wiring Kit

DC Audio 1.2k - 1200W Class D Monoblock Amplifier with NVX 4 Gauge Amp Kit

1200W Competition Series Class D 1-Ohm Stable Monoblock Subwoofer Amplifier

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DC Audio 1.2k - 1200W Class D Monoblock Amplifier with NVX 4 Gauge Amp Kit

1200W Competition Series Class D 1-Ohm Stable Monoblock Subwoofer Amplifier

• RMS Power: 350W x 1 @ 4 ohm, 700W x 1 @ 2 ohm, 1200W x 1 @ 1 ohm
• Strappable for Up to 2400W of Power
• Variable Low Pass Filter
• Dimensions: 9.38" W x 16.5" L x 2.35" H
• Includes Amplifier Wiring Kit

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• RMS Power: 350W x 1 @ 4 ohm, 700W x 1 @ 2 ohm, 1200W x 1 @ 1 ohm
• Strappable for Up to 2400W of Power
• Variable Low Pass Filter
• Dimensions: 9.38" W x 16.5" L x 2.35" H
• Includes Amplifier Wiring Kit

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MTX TH750.1 with NVX 4 Gauge Amp Kit

750W RMS Class D Thunder Series Monoblock Car Amplifier (with Bass Remote)

TH7501_XKIT42 big
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MTX TH750.1 with NVX 4 Gauge Amp Kit

750W RMS Class D Thunder Series Monoblock Car Amplifier (with Bass Remote)

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

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

Diamond Audio HX800.1D with 4 Gauge Amplifier Wiring Kit

800W RMS Hex Series Class-D Monoblock Amplifier + NVX XKIT42 4-Channel Amp Wiring Kit

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Diamond Audio HX800.1D with 4 Gauge Amplifier Wiring Kit

800W RMS Hex Series Class-D Monoblock Amplifier + NVX XKIT42 4-Channel Amp Wiring Kit

• 340 watts x 1 channel @ 4 ohm
• 560 watts x 1 channel @ 2 ohm
• 800 watts x 1 channel @ 1 ohm
• Total RMS Power: 1600 watts
• Class D 1 ohm Stable Monoblock Amplifier

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List price $713.98
-10% $641.66

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• 340 watts x 1 channel @ 4 ohm
• 560 watts x 1 channel @ 2 ohm
• 800 watts x 1 channel @ 1 ohm
• Total RMS Power: 1600 watts
• Class D 1 ohm Stable Monoblock Amplifier

Wet Sounds STX Micro 1 with NVX 8 Gauge Amp Kit

600W RMS Class-D 1-Ohm Stable Monoblock Compact Amplifier

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Wet Sounds STX Micro 1 with NVX 8 Gauge Amp Kit

600W RMS Class-D 1-Ohm Stable Monoblock Compact Amplifier

• 250 Watts RMS x 1 @ 4 ohm
• 420 Watts RMS x 1 @ 2 ohm
• 600 Watts RMS x 1 @ 1 ohm
• Total Peak Power: 600 Watts
• Frequency Response: 10 - 250Hz
• Dimensions: 4"W x 9.25"L x 1.5"H
• Includes Amplifier Wiring Kit

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• 250 Watts RMS x 1 @ 4 ohm
• 420 Watts RMS x 1 @ 2 ohm
• 600 Watts RMS x 1 @ 1 ohm
• Total Peak Power: 600 Watts
• Frequency Response: 10 - 250Hz
• Dimensions: 4"W x 9.25"L x 1.5"H
• Includes Amplifier Wiring Kit

Cerwin-Vega CVPRO3K with NVX 1/0 Gauge Amp Kit

6000W Peak (2050W RMS) CVPRO Series Class-D Monoblock Amplifier with Bass Remote

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Cerwin-Vega CVPRO3K with NVX 1/0 Gauge Amp Kit

6000W Peak (2050W RMS) CVPRO Series Class-D Monoblock Amplifier with Bass Remote

• RMS Power: 1100W x 1 @ 4 ohm
• 2050W x 1 @ 2 ohm
• 3000W x 1 @ 1 ohm
• CEA-2006 Compliant/Preamp Outputs/LPF
• 8.85"W 7.95 "L 2.61"H
• Includes Amplifier Wiring Kit

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• RMS Power: 1100W x 1 @ 4 ohm
• 2050W x 1 @ 2 ohm
• 3000W x 1 @ 1 ohm
• CEA-2006 Compliant/Preamp Outputs/LPF
• 8.85"W 7.95 "L 2.61"H
• Includes Amplifier Wiring Kit

DS18 EXL-P2000X1D with Belva 4 Gauge Amp Kit

2000W RMS EXL Power Series Class-D Monoblock Amplifier with Bass Remote

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DS18 EXL-P2000X1D with Belva 4 Gauge Amp Kit

2000W RMS EXL Power Series Class-D Monoblock 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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• 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

Cerwin-Vega SPRO2100.1D with Belva 1/0 Gauge Amp Kit

2100W Peak (2100W RMS) Class-D Monoblock 1-Ohm Stable Amplifier with Bass Knob

SPRO2100.1D, BAK02 big
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Cerwin-Vega SPRO2100.1D with Belva 1/0 Gauge Amp Kit

2100W Peak (2100W RMS) Class-D Monoblock 1-Ohm Stable Amplifier with Bass Knob

• 900 Watts RMS x 1 @ 4 ohm
• 1400 Watts RMS x 1 @ 2 ohm
• 2100 Watts RMS x 1 @ 1 ohm, bridged
• Total Peak Power: 2100 Watts
• Built-in Low-Pass and Subsonic Filteres
• 0-12 dB Bass Boost
• Aluminum Heatsink
• Dimensions: 10.23" W x 18.03" L x 2.81" H

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• 900 Watts RMS x 1 @ 4 ohm
• 1400 Watts RMS x 1 @ 2 ohm
• 2100 Watts RMS x 1 @ 1 ohm, bridged
• Total Peak Power: 2100 Watts
• Built-in Low-Pass and Subsonic Filteres
• 0-12 dB Bass Boost
• Aluminum Heatsink
• Dimensions: 10.23" W x 18.03" L x 2.81" H

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    FAQ for Monoblock Sub Amplifiers in 1978 Eldorado

    Q: Can I upgrade or change the Monoblock Sub Amplifiers in 1978 Cadillac Eldorado?

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

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