Martin Logan Grotto 15 Subwoofer
In stock
Stock due Late June. Order now for first delivery. Or contact us to leave a deposit.
Features
| High Level Input | No |
|---|---|
| Brand Color | None |
| Warranty The length of time your product is protected by warranty | 2 Years |
| Product Type | Other |
Tech Specs
- Model: Grotto 15
- Application: Subwoofer
- Frequency Response: 20–120 Hz ±3 dB (anechoic via LFE input)
- Low Frequency Transducer: Triple 15" (38.1 cm) hybrid woofer system consisting of one high-excursion aluminum cone in a cast aluminum basket and two aluminum cone passive radiators for enhanced low-frequency output
- Amplifier: MartinLogan Magnitude MT-2kW amplifier rated at 2000W peak (1000W continuous)
- Digital Signal Processing: Ultra high-resolution 500MHz Vojtko DSP engine with 64-bit processing
- Cabinet: Sealed 1" thick MDF cabinet with dual center braces and reinforced MDF woofer baffles
- Controls (on backplate):
- Level: Interactive LED backlit knob (Min–Max)
- Tone Sweep: Sweep Start and Pause (with status light)
- Power Mode: On, 12V Trigger, Auto
- Wireless Audio Pairing Button (for included MartinLogan wireless transmitter)
- Controls (via Bluetooth):
- Level: -40 to 12dB (Min–Max)
- Low-Pass Filter (Frequency): 35–120Hz (1° increments)
- Low-Pass Filter (Order): Bypass, Third, Fourth
- Phase: 0–180° (1° increments)
- Phase (Polarity): Normal, Inverted
- Preset Listening Modes: Movie, Music, Night
- 20–30Hz Level: ±10dB
- Anthem Room Correction (ARC Genesis): On, Off
- Tone Sweep (120–20Hz): On, Off, Pause (Frequency)
- Inputs: Line level (Left, Right, LFE), XLR (LFE), Speaker level (Left and Right, requires banana plugs)
- Wireless Input: Integrated wireless receiver with included wireless transmitter
- Outputs: RCA Sub Out (combines and repeats all incoming signals to an additional subwoofer)
- Power Draw: Max 1000W; Standby (Wireless Enabled): <2W (transmitter and subwoofer combined); Standby (Wireless Disabled): 0.5W
- Feet: Integrated anti-vibration feet (carpet spikes included)
- Weight: 118 lb (53.5 kg)
- Dimensions (H x W x D): 20.5" x 21.8" x 21.8" (522 mm x 554 mm x 554 mm)
- Finish: Gloss Black
Description
The Martin Logan Grotto 15 Subwoofer represents the pinnacle of bass performance within a refined and elegant design. Building on the heritage of the original Grotto series, the new Grotto 15 redefines what is possible in a compact yet powerful subwoofer. It delivers thunderous, articulate, and precisely controlled bass that enhances every listening experience, from cinematic explosions to delicate musical passages.
With its 15-inch Hybrid Woofer System, robust internal architecture, and intelligent digital signal processing, the Grotto 15 embodies Martin Logan’s relentless pursuit of both sonic excellence and design sophistication. This subwoofer brings together the perfect combination of power, precision, and style, setting a new benchmark for high-end low-frequency performance.
Hybrid Woofer System: The Heart of Powerful Bass
At the core of the Martin Logan Grotto 15 Subwoofer lies its advanced Hybrid Woofer System, designed for both high output and low distortion. The system pairs a 15-inch active aluminium driver with two matching aluminium passive radiators, achieving exceptional surface area and dynamic control. This arrangement combines the deep, resonant power of a ported design with the accuracy and compactness of a sealed enclosure.
Each driver has been engineered using state-of-the-art Klippel analysis to ensure maximum performance, precision, and durability. The lightweight aluminium cones allow rapid response and superior heat dissipation, maintaining accuracy even at extreme output levels. This meticulous engineering ensures that the Grotto 15 reproduces every low frequency with clarity and authority.
Power and Control from the Magnitude MT-2kW Amplifier
Powering the Grotto 15 is Martin Logan’s proprietary Magnitude MT-2kW amplifier, a powerhouse capable of delivering 2000 watts of peak power and 1000 watts RMS. This advanced Class-D design combines immense strength with impeccable control, allowing the subwoofer to deliver clean, distortion-free bass with incredible depth and impact.
The amplifier’s efficiency ensures effortless handling of dynamic transients, maintaining composure even during demanding playback. The sealed one-inch thick MDF cabinet with dual internal braces and reinforced baffles adds further rigidity, eliminating unwanted resonance.
This construction ensures the Grotto 15 can reproduce bass with stunning articulation and tightness, even at high output levels. Together, the amplifier and cabinet create a subwoofer system that performs with precision and power in equal measure.
Advanced DSP Engine and Intelligent Calibration
The Grotto 15 Subwoofer features Martin Logan’s cutting-edge Vojtko DSP Engine, a 500MHz digital processor operating with 64-bit precision to manage every aspect of performance. This powerful system delivers advanced real-time control, ensuring transparency and accuracy across all playback levels.
The DSP enables seamless integration with the Martin Logan Subwoofer Control App, allowing easy adjustment of volume, phase, crossover, and preset listening modes directly from your mobile device. The Grotto 15 also supports Anthem Room Correction (ARC Genesis), an award-winning system that analyses room acoustics and automatically calibrates the subwoofer for optimal performance.
By tailoring its output to your specific environment, ARC Genesis guarantees the deepest, most balanced bass possible with exceptional clarity and tonal accuracy.
Elegant Design, Reduced Vibration, and Flexible Integration
Beyond its technical brilliance, the Martin Logan Grotto 15 Subwoofer has been crafted for real-world use with refined aesthetics and intelligent design. Its sleek gloss black finish and minimalist styling allow it to blend seamlessly into any living or theatre space. Integrated anti-vibration feet isolate the cabinet from the floor, significantly reducing unwanted energy transfer and room resonance while enhancing overall bass definition.
The Grotto 15 provides multiple connectivity options, including RCA, XLR, speaker-level, and wireless inputs, ensuring compatibility with any system. Whether used in a two-channel setup or a full surround environment, this subwoofer offers unmatched flexibility, control, and performance. The Martin Logan Grotto 15 Subwoofer redefines what powerful, precise bass can sound like—beautiful, balanced, and brilliantly engineered.