JBL Stage GT 50011 500W Mono Class-D Subwoofer Amplifier
Key features
- Amplifier channels: 1
- RMS output at 4 ohms: 300.0 W
- RMS output at 2 ohms: 500 W
- Frequency response (±1 dB): 10–320 Hz
- Low-pass filter: Variable 32–320 Hz
- Operating voltage: 9–16 V
JBL Stage GT 50011 500W Mono Class-D Subwoofer Amplifier is backordered and will ship as soon as it is back in stock.
Description
Description
Product Overview
Add dedicated subwoofer power to your car audio system with the JBL STAGE GT 50011 mono Class-D amplifier. It delivers up to 500W RMS at 2Ω and combines adjustable bass shaping, crossover, and phase controls in a compact chassis.
Use its high-level inputs to connect to factory head-unit speaker outputs, or its low-level inputs with an aftermarket source. A remote bass control module is included for adjusting subwoofer level from the driver’s seat.
Key Features & Benefits
- Class-D design: Its efficient operation helps limit heat and current draw in compact installations.
- Adjustable parametric bass EQ: Set the boost level, frequency, and bandwidth to shape the subwoofer’s response.
- Variable phase control: Fine-tune alignment between the subwoofer and main speakers.
- Two input options: High-level and low-level inputs support factory or aftermarket system integration.
- Start-stop compatibility: The 9V–16V operating range supports vehicles with start-stop electrical systems.
- Protection suite: DCP, OVP, UVP, OCP, and OTP protection are listed for the amplifier.
Technical Specifications
| Specification | Value |
|---|---|
| Brand | JBL |
| Model | STAGE GT 50011 |
| Amplifier Class | Class-D |
| Channels | Mono (1) |
| Power Output (4Ω) | 300W RMS x1 |
| Power Output (2Ω) | 500W RMS x1 |
| Peak Power | 1,220W |
| Frequency Response | 10Hz – 320Hz (±1dB) |
| THD+N @ ROP | 1% |
| Input Sensitivity (Low) | 1V – 25V |
| Input Sensitivity (High) | 0.2V – 5V |
| Bass EQ Level | 0 – 12dB |
| Bass EQ Frequency | 30Hz – 100Hz (Variable) |
| Bass EQ Width | Narrow – Wide (Variable Q) |
| Phase Control | 0° – 180° (Variable) |
| Low-Pass Filter | 32Hz – 320Hz (Variable) |
| Protection | DCP, OVP, UVP, OCP, OTP |
| Operating Voltage | 9V – 16V |
| Fuse Rating | 30A x2 |
| Shipping Weight | 2.5 kg |
Why Choose This Product?
The Stage GT 50011 gives you more control over subwoofer integration than a basic mono amplifier. Its variable low-pass filter and phase adjustment let you tune how the subwoofer blends with your main speakers.
The parametric bass EQ lets you choose a boost frequency and bandwidth, rather than relying on a fixed bass boost. Pair it with a subwoofer rated for 300–500W RMS; a dual-voice-coil sub wired to 2Ω can use the amplifier’s 500W RMS output.
For enclosure planning, the supplied guidance recommends a ported enclosure tuned to 30–35Hz for low-frequency extension, or a sealed enclosure for tighter, more accurate bass. It also pairs naturally with JBL Stage3 Series speakers.
Installation & Compatibility Notes
The high-level inputs connect to factory head-unit speaker outputs without a line output converter. Low-level inputs are also available for aftermarket system integration. Check your subwoofer’s impedance and RMS rating against the amplifier’s output before choosing a wiring configuration.
The supplied wiring recommendations call for 4-gauge power and ground wire, with a 60A total fuse placed within 18 inches of the battery. Use 8 AWG or heavier speaker wire from the amplifier to the subwoofer. For ported enclosures, the supplied setup guidance suggests an 80Hz low-pass crossover and starting with 3–6dB of EQ boost at 40–50Hz, then adjusting conservatively. If available on your head unit or DSP, a 25Hz subsonic filter is also recommended for ported enclosures.
Frequently Asked Questions
What subwoofer power rating should I look for?
A subwoofer rated for 300–500W RMS is the recommended match. At 2Ω, the amplifier delivers 500W RMS.
Can I connect the Stage GT 50011 to a factory head unit?
Yes. Its high-level inputs connect to factory head-unit speaker outputs without a line output converter.
What does the parametric bass EQ let me adjust?
You can adjust the boost level, frequency, and bandwidth. This helps you target the bass range you want to shape.
Is the amplifier suitable for a start-stop vehicle?
Its stated operating voltage is 9V–16V, a range specified for start-stop vehicle compatibility.
Is a remote bass control included?
Yes. A remote bass control module is included for adjusting subwoofer level from the driver’s seat.
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