SoundQubed BG4-700 700 Watt Bagger Series Amp (Ultra Compact)

Product Overview

Get four-channel amplification into a tight motorcycle or powersports installation with the SoundQubed BG4-700, an ultra-compact BG-Series amplifier. It delivers 100W x 4 at 4 ohms, with selectable crossover controls and automatic high-level input for factory audio systems.

Its 8.3" x 3.8" x 1.7" chassis is designed for space-constrained installations on motorcycles, baggers, side-by-sides, boats, and golf carts.

Key Features & Benefits

• Four-channel power: Choose from three specified output configurations to suit your system setup.
• Automatic high-level input: RCA Auto input supports connection to factory head units without requiring an aftermarket head unit.
• Selectable crossover: LPF, HPF, and FULL modes let you tailor the signal for your speakers or system.
• 10x frequency multiplier: Extends the crossover control range for additional frequency adjustment without a separate DSP.
• Anti-corrosion PCB coating: Adds protection for outdoor, marine, and motorcycle installations; the amplifier is not fully waterproof.
• Built-in protection circuits: Thermal, overload, DC output, short-circuit, and voltage-input protection help protect the amplifier.

Technical Specifications

Why Choose This Product?

The BG4-700 combines four-channel output, factory-radio input support, and adjustable crossover controls in a compact chassis. Its dimensions give you a clear starting point when planning an installation where available space is limited.

Audio Precision instruments are used for the BG4-700’s quality-control verification. A black case with machined logos and lasered end caps completes its compact design.

Installation & Compatibility Notes

The amplifier uses a 4GA power input and a 3 x 40A fuse configuration. The source specifies compatibility with 12V electrical systems used on motorcycles, boats, and powersports vehicles.

For a motorcycle or bagger installation, the source recommends checking available space in fairing pockets, saddlebag lids, tour-pak lids, or under-seat locations before purchase. For a suggested speaker setup, it describes channels 1/2 for front fairing speakers with HPF filtering at 80–100 Hz, and channels 3/4 for rear speakers or a subwoofer in bridged mode.

For marine and outdoor installations, the PCB coating is anti-corrosion, but the amplifier is not fully waterproof. Protect it from direct water exposure and install it where it has reasonable weather protection. Use a minimum 2-ohm load in stereo mode and a minimum 4-ohm load when bridged.

Frequently Asked Questions

Can I connect the BG4-700 to a factory radio?

Yes. Its automatic high-level input (RCA Auto) is designed to accept a factory radio’s speaker output without an aftermarket head unit.

What are the amplifier’s power ratings?

It is rated at 100W x 4 RMS at 4 ohms, 175W x 4 RMS at 2 ohms, and 300W x 2 RMS bridged at 4 ohms.

What is the minimum speaker impedance?

The minimum is 2 ohms per channel in stereo mode and 4 ohms in bridged mode. Do not bridge into a load below 4 ohms.

How much installation space should I allow?

The overall dimensions are 8.3" x 3.8" x 1.7". Measure the intended location and allow for installation requirements before choosing a mounting spot.

Can the amplifier be exposed to water?

No. The anti-corrosion PCB coating is intended for outdoor and marine environments, but the amplifier is not fully waterproof. Protect it from direct water exposure.

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