Description
Description
SoundQubed BG4-1400 — 4-Channel Bagger Amplifier | BG-Series | 200W x 4 @ 4Ω
The SoundQubed BG4-1400 is the flagship 4-channel model of the 2024 BG-Series — SoundQubed’s purpose-built line of ultra-compact amplifiers designed specifically for motorcycles, baggers, side-by-sides, boats, golf carts, and any application where space is the primary constraint. At just 9.92" x 3.8" x 1.7", the BG4-1400 is the largest chassis in the BG-Series — and it earns that distinction by delivering 200W x 4 at 4Ω, 350W x 4 at 2Ω, and 675W x 2 bridged at 4Ω. That’s serious power for a chassis smaller than most wallets. After 12 months of development and testing, SoundQubed engineered the BG-Series to change the direction of the bagger audio industry — and the BG4-1400 is the top of that lineup.
The BG4-1400 features a selectable LPF/HPF/FULL crossover with a filter range of 35 Hz–250 Hz and a 10x crossover frequency multiplier for precise frequency control without a separate DSP. It accepts both low-level RCA input (400mV–6V) and automatic high-level input (RCA Auto) — making it plug-and-play compatible with factory head units and OEM audio systems. With a signal-to-noise ratio of 95 dB, 81% efficiency at 4 ohm, and PCB anti-corrosion protection coating for durability in outdoor and marine environments, the BG4-1400 is built to perform hard in the real world. The sleek black case features a custom “Q” logo end plate, machined logos, and lasered end caps with input/output identification.
Powered by a 4GA input with a 3 x 40A fuse configuration, the BG4-1400 is protected by a full suite of thermal, overload, DC output, short circuit, and voltage input protection circuits. 4-channel 10-gauge speaker outputs and bridge-capable configuration give you maximum flexibility for any bagger or powersports audio build.
Why Choose the SoundQubed BG4-1400?
- 200W x 4 @ 4Ω / 350W x 4 @ 2Ω / 675W x 2 Bridged @ 4Ω — The most powerful 4-channel in the BG-Series — serious output in a chassis that fits virtually anywhere.
- Ultra-Compact 9.92" x 3.8" x 1.7" Chassis — The largest BG-Series amp is still smaller than most conventional amplifiers — purpose-built for bagger fairings and tight installs.
- Automatic High-Level Input (RCA Auto) — Plug-and-play compatible with factory Harley-Davidson and OEM audio systems — no aftermarket head unit required.
- Selectable LPF/HPF/FULL + 10x X-Over Multiplier — Precise crossover control from 35 Hz to 250 Hz (x10 = up to 2,500 Hz) without a separate DSP.
- 95 dB Signal-to-Noise Ratio — Clean, accurate signal reproduction even in electrically noisy motorcycle environments.
- Anti-Corrosion PCB Coating — Built for outdoor, marine, and motorcycle environments where moisture and vibration are a constant reality.
- Custom “Q” Logo End Plate + Lasered End Caps — Premium aesthetics with input/output identification — looks as good as it performs.
- Audio Precision Quality Control Verification — Every BG4-1400 is verified with Audio Precision instruments before leaving the factory.
Installation Recommendations
Motorcycle / Bagger Install: The BG4-1400 is purpose-built for Harley-Davidson baggers and touring bikes. Its 9.92" x 3.8" x 1.7" footprint fits in most fairing pockets, saddlebag lids, tour-pak lids, and under-seat locations. Use the automatic high-level input to connect directly to your factory radio without an aftermarket head unit. Run channels 1/2 for front fairing speakers (HPF filtered at 80–100 Hz) and channels 3/4 for rear speakers, or bridge channels 3/4 for a compact subwoofer at 675W.
Marine / Side-by-Side / Golf Cart: The anti-corrosion PCB coating makes the BG4-1400 an excellent choice for marine and outdoor installs. The compact chassis fits in virtually any storage compartment or under-dash location. Use the automatic high-level input for OEM head unit compatibility and the LPF/HPF crossover to tune your system without additional signal processors.
Electrical Requirements: The BG4-1400 uses a 4GA power input with a 3 x 40A fuse. It is compatible with 12V electrical systems standard on motorcycles, boats, and powersports vehicles.
Full Specifications
| Specification | BG4-1400 |
|---|---|
| RMS Power @ 4 Ohm — 4-Channel | 200W x 4 |
| RMS Power @ 2 Ohm — 4-Channel | 350W x 4 |
| RMS Power @ 4 Ohm — Bridged (2-Channel) | 675W x 2 |
| Frequency Response | 10 Hz – 20 kHz |
| Signal to Noise Ratio | 95 dB |
| Efficiency @ 4 Ohm | 81% |
| THD | 0.50% |
| Low Level Input Range | 400mV – 6V |
| High Level Input | Yes (RCA Auto) |
| Selectable X-Over | LPF / HPF / FULL |
| X-Over Filter Range | 35 Hz – 250 Hz (X1/X10) |
| X-Over Frequency Multiplier | Yes (X10) |
| Amplifier Class | Digital |
| Amplifier Type | Stereo Full-Range |
| Number of Channels | 4 |
| Minimum Impedance (Stereo) | 2 Ohm |
| Minimum Impedance (Bridged) | 4 Ohm |
| LED Indicator | Power / Protect / Clip |
| Power Input Terminal Size | 4GA |
| Speaker Output | 4-Channel 10 Gauge |
| Fuse Size | 3 x 40A |
| Thermal Protection | Yes |
| Over-Load Protection | Yes |
| DC Output Protection | Yes |
| Short Circuit Output Protection | Yes |
| Voltage Input Protection | Yes |
| Automatic Hi-Level Input from RCA | Yes |
| Anti-Corrosion PCB Coating | Yes |
| High Efficiency Digital Circuit Design | Yes |
| Quality Control (Audio Precision) | Yes |
| Compact Size for Baggers | Yes |
| Custom “Q” Logo End Plate | Yes |
| Overall Length | 9.92" / 252 mm |
| Overall Width | 3.8" / 96.4 mm |
| Overall Height | 1.7" / 43.3 mm |
| Heatsink Length | 8.7" / 221 mm |
Frequently Asked Questions
Q: Will the BG4-1400 work with my factory Harley-Davidson radio?
A: Yes — the BG4-1400 features automatic high-level input (RCA Auto) that connects directly to your factory radio’s speaker outputs without an aftermarket head unit. It automatically detects the signal and converts it for amplifier use.
Q: What’s the difference between the BG4-700 and BG4-1400?
A: The BG4-1400 delivers twice the power (200W vs. 100W x4 @ 4Ω) and is 1.62" longer (9.92" vs. 8.3"). Both share the same BG-Series platform, auto hi-level input, and X10 crossover multiplier. Choose the BG4-700 for tighter spaces; choose the BG4-1400 when you need maximum output from the BG-Series 4-channel lineup.
Q: Where does the BG4-1400 fit on a Harley-Davidson bagger?
A: At 9.92" x 3.8" x 1.7", the BG4-1400 fits in most fairing pockets, saddlebag lids, tour-pak lids, and under-seat locations on Harley-Davidson touring and bagger models. Always measure your available space before purchasing.
Q: Is the BG4-1400 weatherproof?
A: The BG4-1400 features an anti-corrosion PCB coating for durability in outdoor, marine, and motorcycle environments. It is not fully waterproof — protect it from direct water exposure and install in a location with reasonable weather protection.





