Blaupunkt GTR130A Slim Active Underseat Subwoofer 300W Class AB

Big bass, no amp rack. German-engineered underseat power.

Product Overview

The Blaupunkt GTR130A is a slim active underseat subwoofer with a fully integrated Class AB amplifier meaning you get powerful, low-distortion bass without needing a separate amplifier or extra boot space. Engineered in Germany, it delivers 130W RMS (300W max) through an oval aluminium cone driver housed in a compact aluminium die-cast sealed enclosure measuring just 280mm x 200mm x 72mm.

Designed to slide cleanly under a car seat, the GTR130A accepts both high-level speaker inputs and low-level RCA inputs, making it compatible with factory head units and aftermarket setups alike. The auto on/off function activates via high-level input signal, so it powers up when your system does no manual switching required. A 4.5m wired remote lets you adjust bass level from the driver's seat, ideal for long-distance touring or daily commutes where on-the-fly adjustments matter.

Key Specifications

• RMS output power: 130W
• Maximum output power: 300W
• Amplifier class: Class AB
• Driver size: 214.5mm x 135mm (oval)
• Cone material: Aluminium
• Enclosure type: Sealed aluminium die-cast
• Enclosure dimensions: 280mm (L) x 200mm (W) x 72mm (H)
• Frequency response: 40Hz–150Hz
• Low pass filter (LPF): 50Hz–100Hz
• Signal-to-noise ratio: 91dB
• Sensitivity: 92dB (in-car / 1W)
• Impedance: 2.2 + 2.2Ω
• Operating voltage: 14.4V (range: 10V–16V)
• Phase switch: 0°/180°
• Auto on/off: High-level input only
• Remote control: 4.5m wired remote included

Features & Benefits

• Built-in Class AB amplifier — no external amp required; saves boot space and simplifies wiring, making it ideal for daily drivers, utes, and caravans where space is at a premium
• Slim underseat form factor — at just 72mm tall, it fits beneath most car and 4WD seats without modification, keeping your cabin clear
• Dual input compatibility — accepts both high-level speaker input (0.8V) and low-level RCA input (82mV), so it works straight out of the box with factory head units or aftermarket systems
• Auto on/off via high-level input — powers up and down with your stereo automatically; no remote wire needed when using speaker-level input
• Wired bass remote — 4.5m cable gives you convenient bass level control from the driver's seat, perfect for Aussie road trips where you dial in the low end to match the terrain
• Aluminium sealed enclosure — die-cast aluminium construction delivers tight, accurate bass and handles the heat common in Australian climates better than plastic-bodied alternatives
• 0°/180° phase switch — fine-tune subwoofer integration with your existing speakers for a cohesive, full-range soundstage
• 92dB sensitivity — efficient enough to deliver strong output at moderate power, reducing strain on your vehicle's electrical system

Technical Specs

• RMS Output Power: 130W
• Max Output Power: 300W
• Amplifier Technology: Class AB
• Sensitivity (In-Car / 1W): 92dB
• Signal / Noise Ratio: 91dB
• Impedance: 2.2 + 2.2Ω
• Frequency Response: 40Hz–150Hz
• Low Pass Filter (LPF): 50Hz–100Hz
• Operating Voltage: 14.4V (10V–16V range)
• Phase Switch: 0° / 180°
• Automatic On/Off: High-level input only
• Audio Input Sensitivity: Speaker input 0.8V / RCA input 82mV
• Driver Size: 214.5mm x 135mm (oval)
• Cone Material: Aluminium
• Magnet Type: Ferrite
• Enclosure Material: Aluminium die-cast sealed
• Enclosure Dimensions: 280mm (L) x 200mm (W) x 72mm (H)
• Enclosure Net Weight: 3.62kg
• Remote Controller: 4.5m wired remote
• DC Cord Length: 4.5m
• Mounting Brackets: 2x Bracket A (72mm x 40mm)
• Screws included: Parker-type 5x15mm; M-type 4x8mm
• Included accessories: High-level input speaker extension, low-level input speaker extension, input plug extension

Compatible With

Works with:

• Factory (OEM) head units via high-level speaker input, no RCA outputs required
• Aftermarket head units with RCA pre-amp outputs
• Vehicles with under-seat space of 72mm or greater clearance

Goes well with:

• Aftermarket head units with RCA outputs for cleaner signal feed
• Amplifier wiring kits (8 gauge recommended for this power class)
• RCA cables for low-level input connection
• Sound deadening material to maximise bass output in the cabin

Note: Auto on/off function operates via high-level input only. If using RCA (low-level) input, a separate remote turn-on wire connection will be required. Confirm under-seat clearance of at least 72mm before purchasing.

Frequently Asked Questions

Do I need a separate amplifier for the Blaupunkt GTR130A?

No. The GTR130A has a built-in Class AB amplifier delivering 130W RMS and 300W max. It connects directly to your head unit — no external amplifier is needed.

Will this subwoofer work with my factory head unit?

Yes. The GTR130A accepts high-level speaker inputs (0.8V), so it connects directly to your factory speaker wiring without needing RCA outputs on your head unit.

How does the automatic on/off work?

The auto on/off activates through the high-level input signal. When your stereo outputs audio, the subwoofer powers on automatically. Note: this function operates via high-level input only.

What under-seat clearance do I need?

The enclosure is 72mm tall. You'll need at least 72mm of vertical clearance under your seat for a clean fit. Check your specific vehicle before purchasing.

What's included in the box?

The GTR130A includes the subwoofer unit, a 4.5m wired remote, a 4.5m DC cord, two mounting brackets, high-level and low-level input extensions, an input plug extension, and mounting screws.