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2006 Subaru Legacy

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

Overview Upgrade your Stereo 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 2006 Subaru Legacy

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.
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 KAC-9106D

2000W Peak (1000W RMS) Class D Performance Series Monoblock Car Amplifier

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Kenwood KAC-9106D

2000W Peak (1000W RMS) Class D Performance Series Monoblock Car 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

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List price $400.00
-13% $349.00

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FREE Belva Amp Kit at Checkout!
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Save 30% on an NVX XKIT42 Amp Kit with Purchase! Add a qualifying amplifier to your cart and save 30% on the NVX XKIT42 Amp Kit! No code needed — discount applies automatically at checkout.
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Kenwood eXcelon XR1001-1

2000W Peak (1000W RMS) Class D eXcelon Reference Series Monoblock Car Amplifier with Bass Remote

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Kenwood eXcelon XR1001-1

2000W Peak (1000W RMS) Class D eXcelon Reference Series Monoblock Car Amplifier with Bass Remote

• 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

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-9% $699.00

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FREE NVX Amp Kit at Checkout!
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Kenwood eXcelon X503-1

1000W Peak (500W RMS) Class D eXcelon Series Monoblock Car Amplifier with Bass Remote

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Kenwood eXcelon X503-1

1000W Peak (500W RMS) Class D eXcelon Series Monoblock Car Amplifier with Bass Remote

• 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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List price $400.00
-25% $299.00

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FREE Belva Amp Kit at Checkout!
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Limited time!

Kenwood KAC-M5001

600W Peak (300W RMS) Class D M Series Monoblock Marine and Powersports Amplifier with Bass Remote

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Kenwood KAC-M5001

600W Peak (300W RMS) Class D M Series Monoblock Marine and Powersports Amplifier with Bass Remote

• 200 watts x 1 channel @ 4 ohm
• 300 watts x 1 channel @ 2 ohm
• Total RMS Power: 300 watts
• Class D 2 ohm Stable Monoblock Amplifier

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List price $300.00
Save $171.00
-57% $129.00

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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 2 ohm Stable Monoblock Amplifier

Kenwood eXcelon XR601-1

600W RMS Class D eXcelon Reference Series Monoblock Car Amplifier with Bass Remote

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Kenwood eXcelon XR601-1

600W RMS Class D eXcelon Reference Series Monoblock Car Amplifier with Bass Remote

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

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List price $520.00
-14% $449.00

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Available Offers (2) for Kenwood eXcelon XR601-1
FREE Belva Amp Kit at Checkout!
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Save 30% on an NVX XKIT42 Amp Kit with Purchase! Add a qualifying amplifier to your cart and save 30% on the NVX XKIT42 Amp Kit! No code needed — discount applies automatically at checkout.
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Kenwood eXcelon XM502-1

1000W Peak (500W RMS) Class D eXcelon Motorsports Series Monoblock Marine and Powersports Amplifier

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Kenwood eXcelon XM502-1

1000W Peak (500W RMS) Class D eXcelon Motorsports Series Monoblock Marine and Powersports 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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List price $450.00
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Kenwood KAC-M5001 with NVX 8 Gauge Amp Kit

300W RMS KAC Series Class-D Monoblock Marine Amplifier

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Kenwood KAC-M5001 with NVX 8 Gauge Amp Kit

300W RMS KAC Series Class-D Monoblock Marine Amplifier

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

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-53% $184.99

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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 2 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

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

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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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-15% $775.99

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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

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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-37% $316.49

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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

Kenwood KAC-9106D w/Belva 1.0 Farad Capacitor + Belva 2000 Watt Handling Amp Kit

1000W RMS Class D Monoblock Car Amplifier w/ 1.0 Farad Capacitor & 4 AWG Amp Kit

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Kenwood KAC-9106D w/Belva 1.0 Farad Capacitor + Belva 2000 Watt Handling Amp Kit

1000W RMS Class D Monoblock Car Amplifier w/ 1.0 Farad Capacitor & 4 AWG Amp Kit

• Kenwood KAC-9106D Performance Series 1000W Class-D Monoblock Amplifier
• Belva BAK42 Complete 4 Gauge 2-Channel Amplifier Installation Kit
• Belva BB1D 1.0 Farad Capacitor
• RMS: 500W x 1 @ 4 ohm
• Premium Power and Ground Wire Provides Optimal Power Transfer

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-26% $400.78

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• Kenwood KAC-9106D Performance Series 1000W Class-D Monoblock Amplifier
• Belva BAK42 Complete 4 Gauge 2-Channel Amplifier Installation Kit
• Belva BB1D 1.0 Farad Capacitor
• RMS: 500W x 1 @ 4 ohm
• Premium Power and Ground Wire Provides Optimal Power Transfer

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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158
List price $543.99
-22% $425.99

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Add to Cart

• 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

Kenwood eXcelon XR601-1 + NVX Premium XKIT42

600W RMS XR Series 2-ohm Stable Class-D Monoblock Amplifier w/ Bass Knob Included + NVX 4 Gauge Amp Wiring Kit

XR601-1, XKIT42 big
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Kenwood eXcelon XR601-1 + NVX Premium XKIT42

600W RMS XR Series 2-ohm Stable Class-D Monoblock Amplifier w/ Bass Knob Included + NVX 4 Gauge Amp Wiring Kit

• 400 Watts RMS x 1 @ 4 ohm
• 600 Watts RMS x 1 @ 2 ohm
• Total Peak Power: 1200 Watts
• CEA-2006 Compliant
• Bass Knob Included
• Aluminum Heatsink
• Dimensions: 8-11/16" W x 6-5/8" L x 1-3/8" H

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124
List price $663.99
-21% $525.99

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• 400 Watts RMS x 1 @ 4 ohm
• 600 Watts RMS x 1 @ 2 ohm
• Total Peak Power: 1200 Watts
• CEA-2006 Compliant
• Bass Knob Included
• Aluminum Heatsink
• Dimensions: 8-11/16" W x 6-5/8" L x 1-3/8" H

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

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

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60
List price $545.99
-35% $354.99

Available

Ships in 10-14 days

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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

 
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    FAQ for Monoblock Sub Amplifiers in 2006 Legacy

    Q: Can I upgrade or change the Monoblock Sub Amplifiers in 2006 Subaru Legacy?

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

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