Sky High Car Audio

Sky High Car Audio FXB 2000.1 Compact Monoblock Amplifier

Name: Sky High Car Audio FXB 2000.1 Compact Monoblock Amplifier
Brand: Sky High Car Audio
SKU: SHCA-FXB-2000-1
Price: 284.95 USD
Availability: OutOfStock

$284.95 USD

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Sky High Car Audio FXB 2000.1 Compact Monoblock Amplifier

Sold by AudioSellerz.com

The Sky High Car Audio FXB 2000.1 Compact Monoblock Amplifier delivers more than 2,000 watts RMS at 1 ohm from a chassis measuring less than seven inches long. This compact Class D amplifier is built for customers who need serious subwoofer power without dedicating a large section of the vehicle to an amplifier rack.

At 14.4 volts, the FXB 2000.1 produces 2,100 watts RMS at 1 ohm, 1,200 watts RMS at 2 ohms, and 600 watts RMS at 4 ohms. Its small footprint makes it a practical choice for car and truck installations, motorcycles, powersports systems, behind-seat installations, under-seat installations, stealth builds, and modern vehicles with limited equipment space.

The included multi-function bass knob provides remote level control along with real-time amplifier temperature, system voltage, and clipping information. This gives you useful system feedback from the driver’s seat, even when the amplifier is mounted somewhere difficult to see.

Browse more products from the Sky High Car Audio collection, compare other monoblock subwoofer amplifiers, or shop our complete selection of car audio subwoofers.

FXB 2000.1 Power Ratings at 14.4 Volts

Final impedance	RMS output
1 ohm	2,100 watts RMS
2 ohms	1,200 watts RMS
4 ohms	600 watts RMS
Minimum impedance	1 ohm

Published power ratings are measured at 14.4 volts. Actual output depends on system voltage, final impedance, source signal, wiring, installation, tuning, and available charging current.

More Than 2,000 Watts in a Compact Chassis

The FXB 2000.1 measures only 5.9 inches × 6.7 inches × 2.1 inches. That compact size gives installers more freedom when there is not enough room for a traditional 2,000-watt monoblock amplifier.

Good installation applications include:

Behind-seat truck installations
Under-seat amplifier installations with proper clearance
Motorcycle and powersports audio systems
Compact daily-driver subwoofer builds
Modern vehicle and factory-system integration
Stealth installations with hidden equipment
Custom builds where amplifier space is limited

Always measure the complete mounting area before ordering. Leave enough space for power wire, ground wire, RCA cables, speaker wire, control access, mounting hardware, ventilation, and proper operation of the internal cooling fan.

Multi-Function Bass Knob Included

The included FXB bass knob provides more information than a basic remote level controller. Its functions include:

Remote amplifier-level adjustment
Real-time amplifier-temperature display
Real-time electrical-system voltage display
Clipping indicator

The voltage display helps you monitor how the electrical system responds when the amplifier is under load. The temperature display is especially useful when the amplifier is installed in a tight or concealed location. The clipping indicator can help show when the system is approaching its limits.

The clip indicator is a useful monitoring tool, but it does not replace correct gain setting, subwoofer matching, enclosure design, crossover adjustment, or electrical-system testing.

Sky High FXB 2000.1 Features

Compact Class D monoblock amplifier
2,100 watts RMS at 1 ohm at 14.4 volts
1-ohm minimum impedance
Stable with electrical systems operating up to 16.8 volts
Multi-function bass knob included
Remote amplifier-level adjustment
Real-time amplifier-temperature display
Real-time system-voltage display
Bass-knob clipping indicator
Internal cooling fan
Adjustable high-pass and low-pass filters
Adjustable subsonic filter
Adjustable 0–12 dB bass boost
10 Hz–20 kHz published frequency response
Greater than 180 damping factor
Less than 0.1% total harmonic distortion
Thermal protection
Overload protection
Short-circuit protection
DC-output protection
Voltage protection
1/0-gauge power input
200-amp fuse rating
Compatible with the SHCA modular mounting ecosystem
Compatible with SHCA Universal Amp Key mounting options

FXB 2000.1 Specifications

Amplifier type	Compact Class D monoblock
Minimum impedance	1 ohm
Maximum supported voltage	16.8 volts
Frequency response	10 Hz–20 kHz
Damping factor	Greater than 180
Total harmonic distortion	Less than 0.1%
Bass boost	Adjustable from 0–12 dB
Power input	1/0 gauge
Fuse rating	200 amps
Cooling	Internal cooling fan
Dimensions	5.9 × 6.7 × 2.1 inches

Subwoofer and Impedance Matching

Before ordering, confirm that your subwoofer voice coils can be wired to a final load of 1, 2, or 4 ohms. The FXB 2000.1 should never be connected below its published 1-ohm minimum impedance.

Match the subwoofer’s realistic RMS power handling to the amplifier’s output at the final wired impedance:

At 1 ohm: Match around the amplifier’s 2,100-watt RMS rating.
At 2 ohms: Match around the amplifier’s 1,200-watt RMS rating.
At 4 ohms: Match around the amplifier’s 600-watt RMS rating.

These ratings apply to the complete connected subwoofer load. When multiple subwoofers are used, divide the available power across the connected subwoofers and confirm that the voice-coil configuration creates a safe final impedance.

Power Wire and Fuse Requirements

The FXB 2000.1 accepts 1/0-gauge power wire and has a published 200-amp fuse rating. Use properly sized, true-spec power and ground cable, a quality fuse holder, and secure high-current connections.

The main power-wire fuse should be mounted near the battery. The amplifier ground should be short, properly sized, and attached securely to clean bare metal or another verified grounding point.

Browse our car audio amplifier wiring kits or select the appropriate power, ground, remote, and speaker wire for your installation.

Electrical Support for a 2,000-Watt Amplifier

A 2,100-watt amplifier can place significant demand on a vehicle’s charging system. Electrical requirements depend on the vehicle, listening habits, system voltage, amplifier efficiency, wire length, battery capacity, alternator output, and the total current demand of every amplifier in the system.

If voltage drops heavily when the system plays, do not compensate by increasing the amplifier gain. Inspect the battery, alternator, grounds, power wire, fuse holders, terminals, and charging connections.

Depending on the vehicle and build, electrical support may include:

A properly installed Big 3 wiring upgrade
A high-output alternator matched to the vehicle
Appropriate car audio lithium battery support
Correctly sized power and ground wire
Quality fuse holders, terminals, and grounding connections

Electrical upgrades must be matched to the complete vehicle and charging system. Do not mix batteries or change operating voltage without confirming compatibility between the alternator, batteries, amplifier, and vehicle electronics.

Gain and Crossover Setup

Gain is used to match the amplifier’s input sensitivity to the clean output of the radio, line-output converter, or digital signal processor. It is not a volume control and should not automatically be turned to maximum.

Start with bass boost turned off. Set the low-pass filter for the connected subwoofer system and use the adjustable subsonic filter when operating a ported enclosure. The correct subsonic setting depends on enclosure tuning, filter slope, subwoofer limits, and applied power.

For additional help, read our guide explaining how to set amplifier gain correctly.

Sky High FXB 2000.1 Frequently Asked Questions

How much power does the FXB 2000.1 produce?

At 14.4 volts, it is rated for 2,100 watts RMS at 1 ohm, 1,200 watts RMS at 2 ohms, and 600 watts RMS at 4 ohms.

Is the FXB 2000.1 stable below 1 ohm?

No below-1-ohm rating is published for this amplifier. Its listed minimum impedance is 1 ohm, so it should not be wired below that load.

Does the FXB 2000.1 include a bass knob?

Yes. It includes a multi-function bass knob with remote level adjustment, amplifier-temperature display, system-voltage display, and a clipping indicator.

Can this amplifier operate on a 16-volt system?

Sky High lists the FXB 2000.1 as stable up to 16.8 volts. Every component connected to the electrical system must be compatible with the chosen operating voltage.

What size power wire does it accept?

The amplifier accepts 1/0-gauge power wire. Cable material, length, current capacity, installation quality, and voltage drop must still be considered when selecting wire.

What fuse rating does Sky High publish?

Sky High publishes a 200-amp fuse rating for the FXB 2000.1. The main power wire should be fused near the battery with equipment appropriate for the cable and installation.

Will the FXB 2000.1 fit under a seat?

It may fit beneath some seats because it measures only 5.9 × 6.7 × 2.1 inches. Measure carefully and leave room for wiring, airflow, seat movement, mounting hardware, and access to the controls.

Can it be used in a motorcycle or powersports system?

Yes. Its compact dimensions make it useful for motorcycle and powersports installations when the amplifier can be mounted securely with proper wiring, ventilation, weather protection, and electrical support.

Need Help Matching Your System?

If you need help matching the FXB 2000.1 with your subwoofers, final impedance, enclosure, wiring, or electrical system, contact Audio Sellerz through the website live chat. We are a real car audio shop and can help you plan the complete system before ordering.