[{"id":639668617375,"handle":"all-regularly-priced-items","updated_at":"2026-04-21T08:30:34-06:00","published_at":"2024-11-30T15:25:35-07:00","sort_order":"best-selling","template_suffix":null,"published_scope":"web","title":"All Regularly Priced Items","body_html":null},{"id":280456888479,"handle":"audio","updated_at":"2026-04-21T05:09:56-06:00","published_at":"2021-12-02T11:21:36-07:00","sort_order":"best-selling","template_suffix":"top-level","published_scope":"global","title":"Audio","body_html":"","image":{"created_at":"2022-01-06T15:53:45-07:00","alt":"audio","width":971,"height":386,"src":"\/\/listenup.com\/cdn\/shop\/collections\/audio.png?v=1641509626"}},{"id":280460591263,"handle":"home-speakers","updated_at":"2026-04-20T19:42:33-06:00","published_at":"2021-12-02T12:20:57-07:00","sort_order":"manual","template_suffix":"","published_scope":"global","title":"Home Speakers","body_html":"","image":{"created_at":"2022-01-04T15:40:48-07:00","alt":"Home Speakers","width":1146,"height":455,"src":"\/\/listenup.com\/cdn\/shop\/collections\/home-speakers.png?v=1641336048"}},{"id":280461770911,"handle":"powered-subwoofers","updated_at":"2026-04-13T13:23:09-06:00","published_at":"2021-12-02T12:55:13-07:00","sort_order":"best-selling","template_suffix":"default","published_scope":"global","title":"Powered Subwoofers","body_html":"","image":{"created_at":"2022-01-04T16:05:13-07:00","alt":"Powered Subwoofers","width":1146,"height":455,"src":"\/\/listenup.com\/cdn\/shop\/collections\/powered-subwoofers.png?v=1641337513"}},{"id":641279459487,"handle":"velodyne-acoustics-spl-x-series-subwoofers","title":"Velodyne Acoustics SPL-X Series Subwoofers","updated_at":"2026-04-02T12:00:34-06:00","body_html":"\u003cp\u003eThe Velodyne Acoustics SPL-X Series Subwoofers bring reference-level bass performance to serious music and home theater systems, combining advanced DSP, powerful Class D amplification and ultra-rigid carbon fiber drivers in a compact sealed design. Engineered as the subwoofer flagship line from Velodyne, the SPL-X 10, SPL-X 12, SPL-X 15 and SPL-X 18 deliver fast, controlled low frequencies with the authority to energize any room, from dedicated cinemas to high-end stereo setups.\u003c\/p\u003e\n\u003cp\u003eEach SPL-X subwoofer is built around a high-performance driver with dual-spider suspension, a triple-vented basket and oversized 3- or 4-inch voice coils, powered by Class D amplifiers rated up to 1800 watts RMS for the largest models. This muscle is managed by a cutting-edge DSP platform with fully parametric 6-band EQ and AutoEQ room calibration using the included microphone, helping you achieve smooth, distortion-free bass tailored precisely to your listening space.\u003c\/p\u003e\n\u003cp\u003eFor installers and enthusiasts, integration is straightforward and flexible: every SPL-X model offers RCA LFE, RCA stereo, XLR LFE, XLR stereo and high-level speaker inputs, making it easy to add flagship low-frequency performance to both hi-fi systems and immersive surround sound theaters. From compact rooms that benefit from the agility of the SPL-X 10 and SPL-X 12, to large, dedicated theaters that demand the sheer output of the SPL-X 15 and SPL-X 18, you can build a perfectly matched low-end foundation across your entire system.\u003c\/p\u003e\n\u003ch3\u003eWhy Choose Velodyne Acoustics SPL-X Subwoofers?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFlagship sealed subwoofers from Velodyne Acoustics, descended from the SPL Ultra and legendary DD series.\u003c\/li\u003e\n\u003cli\u003ePowerful Class D amplifiers (up to 1800 W RMS) driving heavy-duty carbon fiber drivers for deep, precise bass.\u003c\/li\u003e\n\u003cli\u003eAdvanced DSP with AutoEQ, 6-band parametric EQ, subsonic and high-pass filters for true room-optimized performance.\u003c\/li\u003e\n\u003cli\u003eBalanced XLR and unbalanced RCA stereo\/LFE plus high-level inputs for maximum installation flexibility.\u003c\/li\u003e\n\u003cli\u003eClosed HDF cabinets, dual-spider suspension and vented baskets for tight, low-distortion response even at extreme levels.\u003c\/li\u003e\n\u003cli\u003eFour sizes – SPL-X 10, SPL-X 12, SPL-X 15 and SPL-X 18 – to match everything from living rooms and studios to large home theaters.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhether you are building a compact high-fidelity system that demands articulate, musical bass or a no-compromise home cinema that can reproduce modern soundtracks at reference levels, the SPL-X Series subwoofers provide the low-frequency foundation your system deserves. Shop the full Velodyne Acoustics SPL-X collection to find the ideal 10-inch, 12-inch, 15-inch or 18-inch powered subwoofer and experience precise, powerful and uncompromising bass performance.\u003c\/p\u003e","published_at":"2026-01-02T16:19:57-07:00","sort_order":"best-selling","template_suffix":"","disjunctive":false,"rules":[{"column":"tag","relation":"equals","condition":"VASPLX"}],"published_scope":"global","image":{"created_at":"2026-01-02T16:19:56-07:00","alt":"Shop Velodyne Acoustics SPL-X Series Subwoofers","width":1800,"height":1800,"src":"\/\/listenup.com\/cdn\/shop\/collections\/dsc07866.jpg?v=1767395996"}},{"id":301151355039,"handle":"welcome10","updated_at":"2026-04-21T08:34:40-06:00","published_at":"2024-07-02T15:18:25-06:00","sort_order":"best-selling","template_suffix":null,"published_scope":"web","title":"Welcome10","body_html":null}]
The Velodyne SPL-X 18 is an 18-inch sealed flagship subwoofer built for reference-grade, ultra-deep bass in large home theaters and high-end listening rooms. An 1800 W RMS Class D amplifier powers a massive carbon fiber driver with a 4″ voice coil and triple ferrite magnet system. DSP-based AutoEQ, 6-band EQ and app control allow precise tuning and integration with demanding multichannel systems. With its sealed HDF cabinet and comprehensive RCA/XLR connectivity, the SPL-X 18 anchors ambitious systems with powerful, controlled low frequencies.
Get the Details
Features & Specs
18″ carbon fiber driver with 4″ voice coil and dual-spider suspension
The SPL-X 18’s flagship driver offers immense cone area and excursion potential, with a rigid carbon fiber cone, dual-spider suspension and triple ferrite magnet system. This combination enables extremely deep bass levels while maintaining accuracy.
1800 W RMS / 2500 W peak Class D amplifier
The high-output Class D amplifier delivers 1800 W continuous power and up to 2500 W peak, supporting very high SPLs without loss of control. This power capability is vital for reproducing modern film soundtracks with full-scale LFE effects.
DSP with AutoEQ, parametric EQ and app control
AutoEQ with microphone analyzes the room and applies correction, while a 6-band parametric EQ offers detailed manual shaping. Control via app lets users set crossover, phase, filters and presets from the main listening position.
Sealed, reinforced HDF cabinet for ultra-deep, controlled bass
The large sealed HDF enclosure is heavily reinforced to control resonances and maintain structural integrity under high acoustic stress. This supports the production of very deep bass frequencies with clarity and control.
Extensive RCA, XLR and high-level inputs/outputs
Stereo and LFE inputs/outputs on both RCA and XLR plus high-level inputs allow the SPL-X 18 to integrate into advanced systems, including multi-sub and balanced installations. This flexibility makes it suitable for both high-end home and professional-style environments.
Auto power-on and multi-voltage operation
On/Auto/Trigger power modes and adjustable auto power-on sensitivity streamline day-to-day use. Universal 115–230 V operation makes it easy to deploy the SPL-X 18 in different markets.
18″ carbon fiber driver with 4″ voice coil and dual-spider suspension
The SPL-X 18’s flagship driver offers immense cone area and excursion potential, with a rigid carbon fiber cone, dual-spider suspension and triple ferrite magnet system. This combination enables extremely deep bass levels while maintaining accuracy.
1800 W RMS / 2500 W peak Class D amplifier
The high-output Class D amplifier delivers 1800 W continuous power and up to 2500 W peak, supporting very high SPLs without loss of control. This power capability is vital for reproducing modern film soundtracks with full-scale LFE effects.
DSP with AutoEQ, parametric EQ and app control
AutoEQ with microphone analyzes the room and applies correction, while a 6-band parametric EQ offers detailed manual shaping. Control via app lets users set crossover, phase, filters and presets from the main listening position.
Sealed, reinforced HDF cabinet for ultra-deep, controlled bass
The large sealed HDF enclosure is heavily reinforced to control resonances and maintain structural integrity under high acoustic stress. This supports the production of very deep bass frequencies with clarity and control.
Extensive RCA, XLR and high-level inputs/outputs
Stereo and LFE inputs/outputs on both RCA and XLR plus high-level inputs allow the SPL-X 18 to integrate into advanced systems, including multi-sub and balanced installations. This flexibility makes it suitable for both high-end home and professional-style environments.
Auto power-on and multi-voltage operation
On/Auto/Trigger power modes and adjustable auto power-on sensitivity streamline day-to-day use. Universal 115–230 V operation makes it easy to deploy the SPL-X 18 in different markets.
Expert Insight
The SPL-X 18 provides extremely powerful low-frequency performance while still sounding controlled and refined, even at levels that can challenge lesser subwoofers. Its combination of massive driver, high-power amplification and advanced DSP means it can serve as the single foundation subwoofer in very ambitious home theaters. For enthusiasts and integrators seeking a flagship sealed subwoofer solution, the SPL-X 18 offers impressive capability and flexibility.
The Velodyne SPL-X 18 is the flagship of the SPL-X range, featuring an 18-inch sealed subwoofer engineered for extreme low-frequency performance in large, high-end home theaters and listening spaces. Its massive carbon fiber driver with a four-layer 4″ voice coil and triple ferrite magnet system is powered by an 1800 W RMS / 2500 W peak Class D amplifier, delivering extraordinary output with precision and control.
With DSP-based AutoEQ, parametric 6-band EQ, and comprehensive app control, the SPL-X 18 can be tuned to provide smooth, room-filling bass that extends to very low frequencies without sacrificing definition. Extensive RCA/XLR and high-level connectivity, along with a robust sealed HDF enclosure, ensure that this flagship subwoofer can serve as the foundation of the most ambitious systems.
Velodyne Acoustics SPL-X 18 Full Specifications:
Subwoofer type: High-end active sealed subwoofer, SPL-X series flagship
Woofer: 18″ high-performance driver with basket featuring three ventilation channels, carbon fiber cone, dual-spider suspension
Voice coil: Four-layer 4″ (102 mm) voice coil
Magnet system: Triple ferrite magnet system
Cabinet: Closed, reinforced HDF construction
Amplifier: Class D, 1800 W RMS / 2500 W peak
Frequency response (±10 dB): 13–220 Hz
Frequency response (±3 dB): 20–180 Hz
Low-pass filter: 30–200 Hz adjustable, 12/24/36/48 dB per octave
Delay: Adjustable 0–500 ms
Inputs (RCA): RCA stereo / LFE
Inputs (XLR): XLR stereo / LFE
Inputs (high-level): High-level stereo input
Outputs (RCA): RCA stereo / LFE
Outputs (XLR): XLR stereo / LFE
DSP & control: DSP-controlled AutoEQ with microphone, 6-band parametric EQ, subsonic filter, high-pass filter, presets, app control
Auto power-on: Yes, sensitivity adjustable
Power switch modes: On / Auto / Trigger
Mains voltage: 115 V – 230 V
Front grille: Black fabric grille, MDF frame
Dimensions (W × H × D): 550 × 560 × 620 mm
Net weight: 55 kg
Shipping weight: 62 kg
Velodyne Acoustics SPL-X 18 Q&A:
What kind of systems is the SPL-X 18 designed for?
It is intended for large, high-performance home theaters and listening rooms needing ultra-deep, high-output bass.
How low does the SPL-X 18 go?
Its frequency response is 13–220 Hz (±10 dB) and 20–180 Hz (±3 dB), providing extremely deep bass extension.
How much power does the SPL-X 18 amplifier deliver?
The built-in Class D amplifier delivers 1800 W RMS and 2500 W peak.
Is the SPL-X 18 sealed or ported?
It uses a sealed HDF enclosure for maximum control and precision.
Can the SPL-X 18 be integrated with professional-style equipment?
Yes, it includes XLR stereo/LFE inputs and outputs alongside RCA and high-level connections.
Does the SPL-X 18 support automatic room EQ?
Yes, it features DSP-based AutoEQ with microphone and a 6-band parametric EQ, controllable via app.
What are the physical dimensions and weight of the SPL-X 18?
The subwoofer measures 550 × 560 × 620 mm (W×H×D), weighs 55 kg and ships at 62 kg.
What power modes are available on the SPL-X 18?
It provides On, Auto and Trigger modes, plus an adjustable auto power-on function.
The Velodyne SPL-X 18 is an 18-inch sealed flagship subwoofer built for reference-grade, ultra-deep bass in large home theaters and high-end listening rooms. An 1800 W RMS Class D amplifier powers a massive carbon fiber driver with a 4″ voice coil and triple ferrite magnet system. DSP-based AutoEQ, 6-band EQ and app control allow precise tuning and integration with demanding multichannel systems. With its sealed HDF cabinet and comprehensive RCA/XLR connectivity, the SPL-X 18 anchors ambitious systems with powerful, controlled low frequencies.
Get the Details
Features & Specs
Features & Specs
18″ carbon fiber driver with 4″ voice coil and dual-spider suspension
The SPL-X 18’s flagship driver offers immense cone area and excursion potential, with a rigid carbon fiber cone, dual-spider suspension and triple ferrite magnet system. This combination enables extremely deep bass levels while maintaining accuracy.
1800 W RMS / 2500 W peak Class D amplifier
The high-output Class D amplifier delivers 1800 W continuous power and up to 2500 W peak, supporting very high SPLs without loss of control. This power capability is vital for reproducing modern film soundtracks with full-scale LFE effects.
DSP with AutoEQ, parametric EQ and app control
AutoEQ with microphone analyzes the room and applies correction, while a 6-band parametric EQ offers detailed manual shaping. Control via app lets users set crossover, phase, filters and presets from the main listening position.
Sealed, reinforced HDF cabinet for ultra-deep, controlled bass
The large sealed HDF enclosure is heavily reinforced to control resonances and maintain structural integrity under high acoustic stress. This supports the production of very deep bass frequencies with clarity and control.
Extensive RCA, XLR and high-level inputs/outputs
Stereo and LFE inputs/outputs on both RCA and XLR plus high-level inputs allow the SPL-X 18 to integrate into advanced systems, including multi-sub and balanced installations. This flexibility makes it suitable for both high-end home and professional-style environments.
Auto power-on and multi-voltage operation
On/Auto/Trigger power modes and adjustable auto power-on sensitivity streamline day-to-day use. Universal 115–230 V operation makes it easy to deploy the SPL-X 18 in different markets.
18″ carbon fiber driver with 4″ voice coil and dual-spider suspension
The SPL-X 18’s flagship driver offers immense cone area and excursion potential, with a rigid carbon fiber cone, dual-spider suspension and triple ferrite magnet system. This combination enables extremely deep bass levels while maintaining accuracy.
1800 W RMS / 2500 W peak Class D amplifier
The high-output Class D amplifier delivers 1800 W continuous power and up to 2500 W peak, supporting very high SPLs without loss of control. This power capability is vital for reproducing modern film soundtracks with full-scale LFE effects.
DSP with AutoEQ, parametric EQ and app control
AutoEQ with microphone analyzes the room and applies correction, while a 6-band parametric EQ offers detailed manual shaping. Control via app lets users set crossover, phase, filters and presets from the main listening position.
Sealed, reinforced HDF cabinet for ultra-deep, controlled bass
The large sealed HDF enclosure is heavily reinforced to control resonances and maintain structural integrity under high acoustic stress. This supports the production of very deep bass frequencies with clarity and control.
Extensive RCA, XLR and high-level inputs/outputs
Stereo and LFE inputs/outputs on both RCA and XLR plus high-level inputs allow the SPL-X 18 to integrate into advanced systems, including multi-sub and balanced installations. This flexibility makes it suitable for both high-end home and professional-style environments.
Auto power-on and multi-voltage operation
On/Auto/Trigger power modes and adjustable auto power-on sensitivity streamline day-to-day use. Universal 115–230 V operation makes it easy to deploy the SPL-X 18 in different markets.
Expert Insight
Expert Insight
The SPL-X 18 provides extremely powerful low-frequency performance while still sounding controlled and refined, even at levels that can challenge lesser subwoofers. Its combination of massive driver, high-power amplification and advanced DSP means it can serve as the single foundation subwoofer in very ambitious home theaters. For enthusiasts and integrators seeking a flagship sealed subwoofer solution, the SPL-X 18 offers impressive capability and flexibility.
The Velodyne SPL-X 18 is the flagship of the SPL-X range, featuring an 18-inch sealed subwoofer engineered for extreme low-frequency performance in large, high-end home theaters and listening spaces. Its massive carbon fiber driver with a four-layer 4″ voice coil and triple ferrite magnet system is powered by an 1800 W RMS / 2500 W peak Class D amplifier, delivering extraordinary output with precision and control.
With DSP-based AutoEQ, parametric 6-band EQ, and comprehensive app control, the SPL-X 18 can be tuned to provide smooth, room-filling bass that extends to very low frequencies without sacrificing definition. Extensive RCA/XLR and high-level connectivity, along with a robust sealed HDF enclosure, ensure that this flagship subwoofer can serve as the foundation of the most ambitious systems.
Velodyne Acoustics SPL-X 18 Full Specifications:
Subwoofer type: High-end active sealed subwoofer, SPL-X series flagship
Woofer: 18″ high-performance driver with basket featuring three ventilation channels, carbon fiber cone, dual-spider suspension
Voice coil: Four-layer 4″ (102 mm) voice coil
Magnet system: Triple ferrite magnet system
Cabinet: Closed, reinforced HDF construction
Amplifier: Class D, 1800 W RMS / 2500 W peak
Frequency response (±10 dB): 13–220 Hz
Frequency response (±3 dB): 20–180 Hz
Low-pass filter: 30–200 Hz adjustable, 12/24/36/48 dB per octave
Delay: Adjustable 0–500 ms
Inputs (RCA): RCA stereo / LFE
Inputs (XLR): XLR stereo / LFE
Inputs (high-level): High-level stereo input
Outputs (RCA): RCA stereo / LFE
Outputs (XLR): XLR stereo / LFE
DSP & control: DSP-controlled AutoEQ with microphone, 6-band parametric EQ, subsonic filter, high-pass filter, presets, app control
Auto power-on: Yes, sensitivity adjustable
Power switch modes: On / Auto / Trigger
Mains voltage: 115 V – 230 V
Front grille: Black fabric grille, MDF frame
Dimensions (W × H × D): 550 × 560 × 620 mm
Net weight: 55 kg
Shipping weight: 62 kg
Velodyne Acoustics SPL-X 18 Q&A:
What kind of systems is the SPL-X 18 designed for?
It is intended for large, high-performance home theaters and listening rooms needing ultra-deep, high-output bass.
How low does the SPL-X 18 go?
Its frequency response is 13–220 Hz (±10 dB) and 20–180 Hz (±3 dB), providing extremely deep bass extension.
How much power does the SPL-X 18 amplifier deliver?
The built-in Class D amplifier delivers 1800 W RMS and 2500 W peak.
Is the SPL-X 18 sealed or ported?
It uses a sealed HDF enclosure for maximum control and precision.
Can the SPL-X 18 be integrated with professional-style equipment?
Yes, it includes XLR stereo/LFE inputs and outputs alongside RCA and high-level connections.
Does the SPL-X 18 support automatic room EQ?
Yes, it features DSP-based AutoEQ with microphone and a 6-band parametric EQ, controllable via app.
What are the physical dimensions and weight of the SPL-X 18?
The subwoofer measures 550 × 560 × 620 mm (W×H×D), weighs 55 kg and ships at 62 kg.
What power modes are available on the SPL-X 18?
It provides On, Auto and Trigger modes, plus an adjustable auto power-on function.
