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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.
Punch Series (13)
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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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Alpine HDA-M80 with NVX 4 Gauge Amp Kit

800W RMS Status Series Class-D Monoblock Car Amplifier

HDA-M80, XKIT42 big
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Alpine HDA-M80 with NVX 4 Gauge Amp Kit

800W RMS Status Series Class-D Monoblock Car Amplifier

• Peak RMS Power: Up to 800W
• Total RMS Power: 400 watts
• Quick-connect speaker and power connectors
• Class D 2 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

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• Peak RMS Power: Up to 800W
• Total RMS Power: 400 watts
• Quick-connect speaker and power connectors
• Class D 2 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

Cerwin-Vega XED3001D with Belva 4 Gauge Amp Kit

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

XED3001D, BAK42 big
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Cerwin-Vega XED3001D with Belva 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 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
• Class D Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

NVX - Worth the Envy - Direct to Consumer Car Audio

Hertz Venezia V1 with NVX 4 Gauge Amp Kit

1260W RMS Venezia Series Class-D Monoblock Marine Amplifier

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Hertz Venezia V1 with NVX 4 Gauge Amp Kit

1260W RMS Venezia Series Class-D Monoblock Marine Amplifier

• 700 watts x 1 channel @ 4 ohm
• 1260 watts x 1 channel @ 2 ohm
• 1260 watts x 1 channel @ 1 ohm
• Total RMS Power: 1260 watts
• Class D 1 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

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• 700 watts x 1 channel @ 4 ohm
• 1260 watts x 1 channel @ 2 ohm
• 1260 watts x 1 channel @ 1 ohm
• Total RMS Power: 1260 watts
• Class D 1 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

Deaf Bonce AAK-6000.1D + Free NVX XKIT02 1/0 Gauge Amp Wiring Kit

6000W RMS Apocalypse Series Class-D Monoblock Amplifier

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Deaf Bonce AAK-6000.1D + Free NVX XKIT02 1/0 Gauge Amp Wiring Kit

6000W RMS Apocalypse Series Class-D Monoblock Amplifier

• 1700 watts x 1 channel @ 4 ohm
• 3100 watts x 1 channel @ 2 ohm
• 6000 watts x 1 channel @ 1 ohm
• Total RMS Power: 6000 watts
• Class D 1 ohm Stable Monoblock Amplifier
• Includes NVX XKIT02 1/0 Gauge Amp Wiring Kit

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-12% $1,525.15

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• 1700 watts x 1 channel @ 4 ohm
• 3100 watts x 1 channel @ 2 ohm
• 6000 watts x 1 channel @ 1 ohm
• Total RMS Power: 6000 watts
• Class D 1 ohm Stable Monoblock Amplifier
• Includes NVX XKIT02 1/0 Gauge Amp Wiring Kit

DS18 H-KO8 with NVX 1/0 Gauge Amp Kit

8000W RMS Class D Hooligan Series Monoblock Car Amplifier with Bass Remote

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DS18 H-KO8 with NVX 1/0 Gauge Amp Kit

8000W RMS Class D Hooligan Series Monoblock Car Amplifier with Bass Remote

• 2500 watts x 1 channel @ 4 ohm
• 4800 watts x 1 channel @ 2 ohm
• 8000 watts x 1 channel @ 1 ohm
• Total RMS Power: 8000 watts
• Class D 1 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

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$1,765.11

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• 2500 watts x 1 channel @ 4 ohm
• 4800 watts x 1 channel @ 2 ohm
• 8000 watts x 1 channel @ 1 ohm
• Total RMS Power: 8000 watts
• Class D 1 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

Wet Sounds Sinister-SDX2500 with NVX 1/0 Gauge Amp Kit

2500W RMS Class D Monoblock Subwoofer Amplifier

SINISTERSDX2500_XKIT02 big
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Wet Sounds Sinister-SDX2500 with NVX 1/0 Gauge Amp Kit

2500W RMS Class D Monoblock Subwoofer Amplifier

• RMS: 1000 watts x 1 chan. @ 4 Ohm <1.0% THD, 1700 watts x 1 chan. @ 2 Ohm <1.0% THD, 2500 watts x 1 chan. @ 4 Ohm <1.0% THD
• Total power output: 2500 watts RMS
• MAXED Power Supply
• Advanced Intelligent Microprocessor Control
• Includes Amplifier Wiring Kit
• Overvoltage/Undervoltage Protection
• DC Offset & Speaker Short Protection
• Dimensions: 10.25" W x 22.125" L x 3.0" H

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• RMS: 1000 watts x 1 chan. @ 4 Ohm <1.0% THD, 1700 watts x 1 chan. @ 2 Ohm <1.0% THD, 2500 watts x 1 chan. @ 4 Ohm <1.0% THD
• Total power output: 2500 watts RMS
• MAXED Power Supply
• Advanced Intelligent Microprocessor Control
• Includes Amplifier Wiring Kit
• Overvoltage/Undervoltage Protection
• DC Offset & Speaker Short Protection
• Dimensions: 10.25" W x 22.125" L x 3.0" H

DS18 SMD-5000.1D with NVX 1/0 Gauge Amp Kit

5000W RMS Class D SMD Series Monoblock Car Amplifier with Bass Remote

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DS18 SMD-5000.1D with NVX 1/0 Gauge Amp Kit

5000W RMS Class D SMD Series Monoblock Car 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
• Includes Amplifier Wiring Kit

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• 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
• Includes Amplifier Wiring Kit

Sound Extreme by ECOXGEAR SEI-AMPEV30011 with NVX 8 Gauge Amp Kit

300W RMS EV Series Class-D Monoblock High Definition Marine Amplifier

EV30011_XKIT82 big
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Sound Extreme by ECOXGEAR SEI-AMPEV30011 with NVX 8 Gauge Amp Kit

300W RMS EV Series 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
• Operating Voltage: 43V to 82V
• 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
• Operating Voltage: 43V to 82V
• Marine-grade sealed die-cast aluminum chassis
• Includes Amplifier Wiring Kit

Limited time!

JL Audio RD1000/1

1000W RMS Class D RD Series Monoblock Car Amplifier

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JL Audio RD1000/1

1000W RMS Class D RD Series Monoblock Car Amplifier

• 600 watts x 1 channel @ 4 ohm
• 800 watts x 1 channel @ 3 ohm
• 1000 watts x 1 channel @ 2 ohm
• Total RMS Power: 1000 watts
• Class D 2 ohm Stable Monoblock Amplifier

Save 30% on an NVX XKIT42 Amp Kit with Purchase!
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NVX XAPK4 + XIV25 (XKIT42 Sub)

NVX XAPK4 + XIV25 (XKIT42 Sub)

$109.99

$76.99

$33 Savings!

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• 600 watts x 1 channel @ 4 ohm
• 800 watts x 1 channel @ 3 ohm
• 1000 watts x 1 channel @ 2 ohm
• Total RMS Power: 1000 watts
• Class D 2 ohm Stable Monoblock Amplifier

Cerwin Vega S91000.1D

1000W RMS Class D Stroker Series Monoblock Car Amplifier with Bass Remote

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Cerwin Vega S91000.1D

1000W RMS Class D Stroker Series Monoblock Car Amplifier with Bass Remote

• 800 watts x 1 channel @ 4 ohm
• 1000 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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• 800 watts x 1 channel @ 4 ohm
• 1000 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

Limited time!

Deaf Bonce Apocalypse ATOM 5.5K PRO

5500W RMS Class D Apocalypse Atom Pro Series Monoblock Car Amplifier with Bass Remote

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Deaf Bonce Apocalypse ATOM 5.5K PRO

5500W RMS Class D Apocalypse Atom Pro Series Monoblock Car Amplifier with Bass Remote

• 1710 watts x 1 channel @ 4 ohm
• 2850 watts x 1 channel @ 2 ohm
• 5500 watts x 1 channel @ 1 ohm
• Total RMS Power: 5500 watts
• Class D 1 ohm Stable Monoblock Amplifier

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$519.90
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NVX XKIT02

NVX XKIT02

$179.99

$125.99

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• 1710 watts x 1 channel @ 4 ohm
• 2850 watts x 1 channel @ 2 ohm
• 5500 watts x 1 channel @ 1 ohm
• Total RMS Power: 5500 watts
• Class D 1 ohm Stable Monoblock Amplifier

Limited time!

Hifonics Brutus BRL6000.1

6000W RMS Class D Brutus BRL Series Monoblock Car Amplifier with Bass Remote

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Hifonics Brutus BRL6000.1

6000W RMS Class D Brutus BRL Series Monoblock Car Amplifier with Bass Remote

• 2400 watts x 1 channel @ 4 ohm
• 4200 watts x 1 channel @ 2 ohm
• 6000 watts x 1 channel @ 1 ohm
• Total RMS Power: 6000 watts
• Class D 1 ohm Stable Monoblock Amplifier

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List price $799.00
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NVX XKIT02

NVX XKIT02

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$125.99

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• 2400 watts x 1 channel @ 4 ohm
• 4200 watts x 1 channel @ 2 ohm
• 6000 watts x 1 channel @ 1 ohm
• Total RMS Power: 6000 watts
• Class D 1 ohm Stable Monoblock Amplifier

Limited time!

AudioControl LC-1.800

800W RMS Class D LC Series Monoblock Car Amplifier with AccuBass

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AudioControl LC-1.800

800W RMS Class D LC Series Monoblock Car Amplifier with AccuBass

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

Save 30% on an NVX XKIT42 Amp Kit with Purchase!
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NVX XAPK4 + XIV25 (XKIT42 Sub)

NVX XAPK4 + XIV25 (XKIT42 Sub)

$109.99

$76.99

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

Cerwin Vega S91000.1D + Free $150 Gift Card

Stroker Series 1000W RMS Class-D Monoblock Car Audio Amplifier

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Cerwin Vega S91000.1D + Free $150 Gift Card

Stroker Series 1000W RMS Class-D Monoblock Car Audio Amplifier

• Cerwin Vega Stroker Series Monoblock Car Amplifier
• Crossover 35Hz – 350Hz
• Frequency Response: 10Hz – 35KHz
• Remote Bass Knob Included
• Amplifier Class: Class-D

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• Cerwin Vega Stroker Series Monoblock Car Amplifier
• Crossover 35Hz – 350Hz
• Frequency Response: 10Hz – 35KHz
• Remote Bass Knob Included
• Amplifier Class: Class-D

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Sundown Audio SALT-4

4000W RMS Class D SALT Series Monoblock Car Amplifier with Bass Remote (A-SALT4)

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Sundown Audio SALT-4

4000W RMS Class D SALT Series Monoblock Car Amplifier with Bass Remote (A-SALT4)

• 1000 watts x 1 channel @ 4 ohm
• 2000 watts x 1 channel @ 2 ohm
• 4000 watts x 1 channel @ 1 ohm
• 8000 watts x 1 channel @ 2 ohm Bridged
• Total RMS Power: 4000 watts
• Class D 1 ohm Stable Monoblock Amplifier

Save 30% off an NVX XKIT02 Amp Kit at Checkout!
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NVX XKIT02

NVX XKIT02

$179.99

$125.99

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• 1000 watts x 1 channel @ 4 ohm
• 2000 watts x 1 channel @ 2 ohm
• 4000 watts x 1 channel @ 1 ohm
• 8000 watts x 1 channel @ 2 ohm Bridged
• Total RMS Power: 4000 watts
• Class D 1 ohm Stable Monoblock Amplifier

Limited time!

American Bass Godfather 3500.1D (GF-3500.1D)

3047W RMS Class D Godfather Series Monoblock Car Amplifier

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American Bass Godfather 3500.1D (GF-3500.1D)

3047W RMS Class D Godfather Series Monoblock Car Amplifier

• 1540 watts x 1 channel @ 4 ohm
• 2280 watts x 1 channel @ 2 ohm
• Total RMS Power: 3047 watts
• Class D 1 ohm Stable Monoblock Amplifier

Save 30% off an NVX XKIT02 Amp Kit at Checkout!
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NVX XKIT02

NVX XKIT02

$179.99

$125.99

$54 Savings!

Add to cart

• 1540 watts x 1 channel @ 4 ohm
• 2280 watts x 1 channel @ 2 ohm
• Total RMS Power: 3047 watts
• Class D 1 ohm Stable Monoblock Amplifier

Limited time!

Sundown Audio SAEv.4-2000.1D

2000W RMS Class D SAE Series Monoblock Car Amplifier with Bass Remote (SAEv.4-2000D)

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Sundown Audio SAEv.4-2000.1D

2000W RMS Class D SAE Series Monoblock Car Amplifier with Bass Remote (SAEv.4-2000D)

• 875 watts x 1 channel @ 4 ohm
• 1300 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

Save 30% off an NVX XKIT02 Amp Kit at Checkout!
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List price $575.99
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NVX XKIT02

NVX XKIT02

$179.99

$125.99

$54 Savings!

Add to cart

• 875 watts x 1 channel @ 4 ohm
• 1300 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

Limited time!

Sundown Audio SAEv4-3000.1D

3000W RMS Class D SAE Series Monoblock Car Amplifier with Bass Remote (SAEv.4-3000D)

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Sundown Audio SAEv4-3000.1D

3000W RMS Class D SAE Series Monoblock Car Amplifier with Bass Remote (SAEv.4-3000D)

• 1300 watts x 1 channel @ 4 ohm
• 2000 watts x 1 channel @ 2 ohm
• 3000 watts x 1 channel @ 1 ohm
• Total RMS Power: 3000 watts
• Class D 1 ohm Stable Monoblock Amplifier

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NVX XKIT02

NVX XKIT02

$179.99

$125.99

$54 Savings!

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• 1300 watts x 1 channel @ 4 ohm
• 2000 watts x 1 channel @ 2 ohm
• 3000 watts x 1 channel @ 1 ohm
• Total RMS Power: 3000 watts
• Class D 1 ohm Stable Monoblock Amplifier

MB Quart NA2-400.1

400W Peak Class D Nautic Series Monoblock Marine and Powersports Amplifier

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MB Quart NA2-400.1

400W Peak Class D Nautic Series Monoblock Marine and Powersports Amplifier

• @ 4 ohm
• @ 2 ohm
• Total RMS Power:
• Class D 2 ohm Stable Monoblock Amplifier

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• @ 4 ohm
• @ 2 ohm
• Total RMS Power:
• Class D 2 ohm Stable Monoblock Amplifier

Sundown Audio SALT-1.5

1500W RMS Class D SALT Series Monoblock Car Amplifier with Bass Remote (A-SALT1.5)

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Sundown Audio SALT-1.5

1500W RMS Class D SALT Series Monoblock Car Amplifier with Bass Remote (A-SALT1.5)

• 400 watts x 1 channel @ 4 ohm
• 750 watts x 1 channel @ 2 ohm
• 1500 watts x 1 channel @ 1 ohm
• 3000 watts x 1 channel @ 2 ohm Bridged
• Total RMS Power: 1500 watts
• Class D 1 ohm Stable Monoblock Amplifier

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• 400 watts x 1 channel @ 4 ohm
• 750 watts x 1 channel @ 2 ohm
• 1500 watts x 1 channel @ 1 ohm
• 3000 watts x 1 channel @ 2 ohm Bridged
• Total RMS Power: 1500 watts
• Class D 1 ohm Stable Monoblock Amplifier

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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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