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  1. Home
  2. JBL Store
  3. Discontinued JBL Car Audio & Electronics
  4. Discontinued JBL Car Amplifiers
  5. Discontinued JBL Monoblock Amplifiers

Discontinued JBL Monoblock Amplifiers

JBL Monoblock Amplifiers unleash your subwoofers' full potential with robust and reliable power.

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Subwoofers,
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RMS Power Handling
The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend powering your speakers or subwoofer with 80%-120% of its recommended RMS rating. The RMS power handling specification is typically rated per speaker unless otherwise noted.
Peak Power Handling
Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements. The Peak power handling specification is typically rated per speaker unless otherwise noted.
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.
Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
Shallow Mount Installation
This means that the subwoofer/speaker is designed to be installed in areas that do not have a lot of space. Shallow mount subwoofers are typically found under a seat or behind the seat in some trucks.

Shallow mount speakers will typically have a mounting depth of 2" or less, while shallow mount subwoofers will typically have a mounting depth of 3" or less.
Top-Mount Depth (Mounting Depth)
The depth when installed on top of the mounting surface. Measured from the bottom of the speaker's magnet to the bottom of the mounting holes on the rim of the speaker.
Voice Coil(s)
Dual voice coil subs have more wiring flexibility than single voice coils subs; however, single voice coil subwoofers provide easier hookup options for wiring multiple subwoofers in parallel or series. You may also run a dual voice coil (DVC) sub in parallel, series, or combination. A quad voice coil has four voice coils and is equal to two dual voice coil subwoofers as far as wiring goes.
Impedance (Per Voice Coil)
The load value (in ohms) that the speakers present to the amplifier per voice coil - the amount of resistance to the current flow. This is a key specification as subs wired in parallel or low impedances can create problems with your amplifier and potentially void all warranties. We encourage you to ask our support department prior to purchase if you do not understand which impedance level will suit your application best.
Subwoofer Design
This is the design of the subwoofer or the opening of the subwoofer enclosure. Each design has it's own benefits, whether it is a square, circle, or oval.

Round/Circle: This is the typical and common subwoofer design. They have a round cone and are a circle in design.

Square: These woofers are able to achieve a greater cone area in a smaller space. Because of the greater surface area, some square subwoofers will be louder than a round subwoofer of the same size.

Minimum Sealed Box Volume
This value indicates the minimum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
Maximum Sealed Box Volume
This value indicates the maximum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
Sensitivity
An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
  Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
Main Cone Color
This is the color of the speaker's or subwoofer's cone.
Recommended Enclosure Type
This is the recommended type of enclosure that the subwoofer should be installed into. Some subwoofers are specially designed for particular enclosures.

Sealed: These enclosures completely enclose the air inside the box. These boxes produce a tight bass.

Ported/Vented: These enclosures have a slot of air to escape from the box. The result is a sound that has more "boom".

Bandpass: These are a combination of both sealed and ported enclosures. They can be very efficient, but require tuning for the best response.

Xmax (millimeters)
Typically measured in millimeters, the Xmax value is the measure of a speaker cone's maximum excursion in one direction while maintaining a linear behavior.
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JBL Series II 550 Watt RMS Dual 12" Bass Package (S21224 + GTX500)

Two JBL Series II 12" Subwoofers with Selectable 2 Ohm or 4 Ohm Impedance + GTX Series Class-D Monoblock Amplifier with Installation Kit

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JBL Series II 550 Watt RMS Dual 12" Bass Package (S21224 + GTX500)

Two JBL Series II 12" Subwoofers with Selectable 2 Ohm or 4 Ohm Impedance + GTX Series Class-D Monoblock Amplifier with Installation Kit

• 1100W Max Each 12" Series II Car Audio Subwoofer
• Oversized 2.0" Voice Coil
• JBL Mono Subwoofer Amplifier
• Frequency Response: 20 - 200 Hz (±0.5 dB); 10 - 300 Hz (±3dB)
• Complete 4 Gauge 2-Channel Amplifier Installation Kit

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& Save Money

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& Earn 5% Commission*

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• 1100W Max Each 12" Series II Car Audio Subwoofer
• Oversized 2.0" Voice Coil
• JBL Mono Subwoofer Amplifier
• Frequency Response: 20 - 200 Hz (±0.5 dB); 10 - 300 Hz (±3dB)
• Complete 4 Gauge 2-Channel Amplifier Installation Kit

JBL Series II 500 Watt RMS Dual 10" Bass Package (S21024 + GTX500)

Two JBL Series II 10" Subwoofers with Selectable 2 Ohm or 4 Ohm Impedance + GTX Series Class-D Monoblock Amplifier with Installation Kit

S21024X2_GTX500_BAK42 big DISCONTINUED
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JBL Series II 500 Watt RMS Dual 10" Bass Package (S21024 + GTX500)

Two JBL Series II 10" Subwoofers with Selectable 2 Ohm or 4 Ohm Impedance + GTX Series Class-D Monoblock Amplifier with Installation Kit

• 1000W Max Each 10" Series II Car Audio Subwoofer
• Oversized 2.0" Voice Coil
• JBL Mono Subwoofer Amplifier
•Frequency Response: 20 - 200 Hz (±0.5 dB); 10 - 300 Hz (±3dB)
• Complete 4 Gauge 2-Channel Amplifier Installation Kit

• 1000W Max Each 10" Series II Car Audio Subwoofer
• Oversized 2.0" Voice Coil
• JBL Mono Subwoofer Amplifier
•Frequency Response: 20 - 200 Hz (±0.5 dB); 10 - 300 Hz (±3dB)
• Complete 4 Gauge 2-Channel Amplifier Installation Kit

JBL Series III 450 Watt RMS 10" Bass Package (S31024 + GTX500)

JBL Series III 10" Subwoofer with Selectable 2 Ohm or 4 Ohm Impedance + GTX Series Class-D Monoblock Amplifier with Installation Kit

S31024_GTX500_BAK42 big DISCONTINUED
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JBL Series III 450 Watt RMS 10" Bass Package (S31024 + GTX500)

JBL Series III 10" Subwoofer with Selectable 2 Ohm or 4 Ohm Impedance + GTX Series Class-D Monoblock Amplifier with Installation Kit

• 1350W Max 10" Series II Car Audio Subwoofer
• Oversized 2.0" Voice Coil
• JBL Mono Subwoofer Amplifier
• Frequency Response: 20 - 200 Hz (±0.5 dB); 10 - 300 Hz (±3dB)
• Complete 4 Gauge 2-Channel Amplifier Installation Kit

• 1350W Max 10" Series II Car Audio Subwoofer
• Oversized 2.0" Voice Coil
• JBL Mono Subwoofer Amplifier
• Frequency Response: 20 - 200 Hz (±0.5 dB); 10 - 300 Hz (±3dB)
• Complete 4 Gauge 2-Channel Amplifier Installation Kit

JBL Series III 500 Watt RMS 12" Bass Package (S31224 + GTX500)

JBL Series III 12" Subwoofer with Selectable 2 Ohm or 4 Ohm Impedance + GTX Series Class-D Monoblock Amplifier with Installation Kit

S31224_GTX500_BAK42 big DISCONTINUED
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JBL Series III 500 Watt RMS 12" Bass Package (S31224 + GTX500)

JBL Series III 12" Subwoofer with Selectable 2 Ohm or 4 Ohm Impedance + GTX Series Class-D Monoblock Amplifier with Installation Kit

• 1500W Max 12" Series II Car Audio Subwoofer
• Oversized 2.0" Voice Coil
• JBL Mono Subwoofer Amplifier
• Frequency Response: 20 - 200 Hz (±0.5 dB); 10 - 300 Hz (±3dB)
• Complete 4 Gauge 2-Channel Amplifier Installation Kit

1

• 1500W Max 12" Series II Car Audio Subwoofer
• Oversized 2.0" Voice Coil
• JBL Mono Subwoofer Amplifier
• Frequency Response: 20 - 200 Hz (±0.5 dB); 10 - 300 Hz (±3dB)
• Complete 4 Gauge 2-Channel Amplifier Installation Kit

EXCLUSIVE

JBL Subwoofer + Kicker Amplifier Upgrade Bundle

CS1214 250W 12" CS Series Subwoofer + KX200.2 200W RMS KX Series 2-Channel Amplifier + XKIT82 2-Ch 8 Gauge Amplifier Installation Kit

CS1214_KX200.2_XKIT82 big DISCONTINUED
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JBL Subwoofer + Kicker Amplifier Upgrade Bundle

CS1214 250W 12" CS Series Subwoofer + KX200.2 200W RMS KX Series 2-Channel Amplifier + XKIT82 2-Ch 8 Gauge Amplifier Installation Kit

• Subwoofer: RMS Power: 250W
• Amplifier: 50W x 2 Chan. @ 4 ohm
• 100W x 2 Chan. @ 2 ohm
• 8 Gauge 2-Channel Complete Amplifier Installation Kit

• Subwoofer: RMS Power: 250W
• Amplifier: 50W x 2 Chan. @ 4 ohm
• 100W x 2 Chan. @ 2 ohm
• 8 Gauge 2-Channel Complete Amplifier Installation Kit

EXCLUSIVE

JBL Subwoofer + Kicker Amp Upgrade Kit

S3-1024 1350W 10" Series III Subwoofer + KX400.1 400W RMS KX Series Monoblock Amplifier + XKIT42 2-Chan. 4G OFC Amp Installation Kit

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JBL Subwoofer + Kicker Amp Upgrade Kit

S3-1024 1350W 10" Series III Subwoofer + KX400.1 400W RMS KX Series Monoblock Amplifier + XKIT42 2-Chan. 4G OFC Amp Installation Kit

• Subwoofer: 450 Watts RMS
• Amplifier: RMS: 200W x 1 @ 4 ohm, 400W x 1 @ 2 ohm
• CEA-2006 Compliant
• 4 Gauge 2-Channel X-Series Complete Amplifier Installation Kit

130

• Subwoofer: 450 Watts RMS
• Amplifier: RMS: 200W x 1 @ 4 ohm, 400W x 1 @ 2 ohm
• CEA-2006 Compliant
• 4 Gauge 2-Channel X-Series Complete Amplifier Installation Kit

 
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    JBL Monoblock Amplifiers Information

    The JBL monoblock amplifiers are designed for efficient power ouput. These amps take up little space and feature high quality platinum finished connections, and solid power ratings. You won't be disappointed with your JBL monoblock amplifier for your vehicle's needs.
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