Sky High Car Audio

Sky High Car Audio FXB 1000.1 Compact Monoblock Amplifier

Name: Sky High Car Audio FXB 1000.1 Compact Monoblock Amplifier
Brand: Sky High Car Audio
SKU: SHCA-FXB-1000-1
Price: 224.95 USD
Availability: OutOfStock

$224.95 USD

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Sky High Car Audio FXB 1000.1 Compact Monoblock Amplifier

Sold by AudioSellerz.com

The Sky High Car Audio FXB 1000.1 Compact Monoblock Amplifier delivers more than 1,000 watts RMS at 1 ohm from a chassis measuring approximately six inches square. It is designed for car audio, motorcycle audio, powersports systems, behind-seat installations, under-seat installations, and other builds where usable space is limited.

At 14.4 volts, the FXB 1000.1 produces 1,050 watts RMS at 1 ohm, 650 watts RMS at 2 ohms, and 320 watts RMS at 4 ohms. Its compact Class D design makes it a practical option for powering a daily-driver subwoofer system without giving up a large section of the vehicle for the amplifier.

The included multi-function bass knob gives you remote level control along with real-time amplifier temperature, system voltage, and clipping information. That makes it easier to monitor the system from the driver’s seat instead of relying on a basic level knob alone.

Compare more equipment in the Sky High Car Audio collection, browse our complete selection of monoblock subwoofer amplifiers, or shop car audio subwoofers to build a properly matched bass system.

FXB 1000.1 Power Ratings at 14.4 Volts

Final impedance	RMS output
1 ohm	1,050 watts RMS
2 ohms	650 watts RMS
4 ohms	320 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 the vehicle’s available charging current.

Compact Power for Tight Installations

The FXB 1000.1 measures only 5.9 inches × 6 inches × 2.1 inches. Its compact footprint gives installers more flexibility when a traditional monoblock amplifier is too large for the available space.

Possible applications include:

Under-seat amplifier installations
Behind-seat truck installations
Motorcycle and powersports audio systems
Compact daily-driver subwoofer systems
Modern vehicles with limited equipment space
Factory audio system upgrades using proper signal integration

Always measure the intended mounting location and leave enough room for wiring, control access, ventilation, and the internal cooling fan to operate properly.

Multi-Function Bass Knob Included

The included FXB multi-function bass knob provides useful system information directly from the listening position. Its functions include:

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

The clipping indicator can help identify when the amplifier is approaching its clean-output limit, but it does not replace proper gain setting, crossover adjustment, speaker matching, or electrical-system testing.

Sky High FXB 1000.1 Features

Compact Class D monoblock design
1-ohm minimum impedance
Stable with electrical systems operating up to 16.8 volts
Multi-function bass knob included
Real-time temperature and voltage monitoring
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
4-gauge power input
100-amp fuse rating
Compatible with the SHCA modular mounting ecosystem
Compatible with SHCA Universal Amp Key mounting options

FXB 1000.1 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	4 gauge
Fuse rating	100 amps
Cooling	Internal cooling fan
Dimensions	5.9 × 6 × 2.1 inches

Amplifier Wiring and Electrical Requirements

The FXB 1000.1 uses a 4-gauge power input and carries a published 100-amp fuse rating. Use properly sized, true-spec power and ground wire, place the main fuse near the battery, and keep the amplifier ground short and attached to clean bare metal.

Wire size must be selected around the total current demand, cable material, cable length, system voltage, and installation. Browse our car audio amplifier wiring kits or choose the appropriate power, ground, remote, and speaker wire for your installation.

If voltage drops heavily at full output, inspect the battery, alternator, grounds, power wire, fuse holders, and all electrical connections before increasing amplifier gain. Larger electrical upgrades should be based on the vehicle and the total system—not only the amplifier’s advertised wattage.

Subwoofer and Impedance Matching

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

Choose a subwoofer or subwoofer combination with realistic RMS power handling for the amplifier’s output at the final wired impedance. Enclosure design, impedance rise, voltage, tuning, and the musical signal will affect the power the subwoofer receives in actual use.

Gain and Crossover Setup

Gain is not a volume control. Set the gain to match the clean output voltage of the radio, DSP, or line-output converter. Excessive gain, bass boost, or a clipped input signal can overheat the amplifier and damage the connected subwoofer.

Use the low-pass filter to control the upper frequencies sent to the subwoofer. When using a ported enclosure, set the adjustable subsonic filter around the enclosure design and tuning frequency to help protect the subwoofer from excessive movement below the usable range.

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

Sky High FXB 1000.1 Frequently Asked Questions

How much power does the FXB 1000.1 produce?

At 14.4 volts, it is rated for 1,050 watts RMS at 1 ohm, 650 watts RMS at 2 ohms, and 320 watts RMS at 4 ohms.

Is the FXB 1000.1 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 amplifier include a bass knob?

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

Can this amplifier be used in a motorcycle or powersports build?

Yes. Its compact dimensions make it suitable for motorcycle, powersports, and other space-limited installations when it can be mounted securely with sufficient ventilation and proper electrical protection.

Can the FXB 1000.1 run on a 16-volt system?

Sky High lists the amplifier as stable up to 16.8 volts. Every connected component must be compatible with the vehicle’s operating voltage before using a higher-voltage electrical system.

What size power wire does the FXB 1000.1 accept?

The amplifier has a 4-gauge power input. Use quality true-spec cable appropriate for the installation length and current demand.

What fuse should be used?

Sky High publishes a 100-amp fuse rating for the FXB 1000.1. Fuse the main power wire near the battery and make sure the fuse, holder, and cable are suitable for the installation.

Will this amplifier fit under my seat?

It may fit under many seats because it measures only 5.9 × 6 × 2.1 inches, but you must measure the available space and account for wiring, airflow, seat movement, mounting hardware, and access to the amplifier controls.

Need Help Matching Your System?

If you need help matching the FXB 1000.1 with a subwoofer, final impedance, amp kit, 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 you order.