REL HT/1003 MKII – Compact 10" Home Cinema Subwoofer
Powerful cinematic bass in a compact enclosure. The REL HT/1003 MKII is the most compact model in REL's dedicated HT Series, designed specifically for home cinema enthusiasts who want fast, dynamic and controlled low-frequency performance without sacrificing valuable living space. Equipped with a high-current 300W Class D amplifier and a newly developed 10-inch CarbonGlas™ driver, the HT/1003 MKII delivers impressive impact and precision for movies, gaming and immersive multi-channel systems.
- Compact sealed active subwoofer for home cinema
- 300W RMS NextGen5 Class D amplifier
- 10" long-throw CarbonGlas™ front-firing driver
- Bass extension down to 24 Hz (-6 dB)
- LFE and stereo RCA inputs with daisy-chain outputs
- Compatible with the optional REL HT-Air MKII wireless system
- Available in High Gloss Black or High Gloss White
Purpose-Built for Home Cinema
Unlike REL's Serie T/x models, which are optimised for both music and home cinema, the HT/1003 MKII has been engineered specifically for LFE reproduction in multichannel systems. Its tuning prioritises speed, impact and effortless dynamics, allowing movie soundtracks and gaming effects to retain their full energy while remaining clean and tightly controlled.
The sealed enclosure provides fast transient response and excellent articulation, making explosions, orchestral scores and low-frequency effects feel powerful without becoming bloated or uncontrolled.
Compact Size, Serious Performance
Designed for small and medium-sized home cinema rooms, the HT/1003 MKII combines a compact footprint with remarkable output capability. Its redesigned cabinet features improved proportions inspired by REL's flagship Reference Series, contributing to both enhanced rigidity and improved bass performance.
The lightweight yet exceptionally rigid CarbonGlas™ cone combines a glass-fibre main diaphragm with a carbon-fibre centre cap, allowing greater excursion while maintaining excellent control at high output levels.
300W NextGen5 Class D Amplifier
Powering the HT/1003 MKII is REL's latest 300W RMS NextGen5 Class D amplifier. Designed for high-current delivery and long-term reliability, it provides effortless control of the driver while maintaining excellent efficiency and low operating temperatures.
REL's proprietary analogue input filters, protection circuitry and SET-SAFE technology ensure consistent performance even during demanding movie soundtracks.
Flexible System Integration
The HT/1003 MKII integrates easily with virtually any AV receiver or processor thanks to dedicated low-level and LFE inputs. Stereo and LFE outputs also allow simple daisy-chaining of multiple subwoofers for larger home cinema installations.
- Stereo RCA low-level inputs
- Dedicated LFE RCA input
- Stereo RCA outputs
- LFE RCA output
- Compatible with REL HT-Air MKII wireless transmitter (optional)
Elegant REL Design
The redesigned HT Series cabinet combines understated aesthetics with premium construction. A horizontally textured composite cabinet is complemented by a beautifully hand-polished five-layer high-gloss lacquer top panel, creating a discreet appearance that integrates naturally into modern home cinema rooms.
Technical Specifications
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Type: Active sealed subwoofer
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Driver: 10" (250 mm) CarbonGlas™ long-throw front-firing driver
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Amplifier: 300W RMS NextGen5 Class D
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Frequency Extension: 24 Hz (-6 dB)
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Inputs: Stereo RCA, LFE RCA
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Outputs: Stereo RCA, LFE RCA (daisy-chain)
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Wireless: Compatible with optional REL HT-Air MKII
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Protection: SET-SAFE fully electronic protection
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Dimensions (W × H × D): 362 × 343 × 387 mm
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Weight: 15.5 kg
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Finishes: High Gloss Black or High Gloss White
REL HT Series Comparison
| Model |
Driver |
Amplifier |
Best For |
Recommended Room Size |
| HT/1003 MKII |
10" |
300W |
Compact home cinema systems |
Small to medium rooms |
| HT/1205 MKII |
12" |
500W |
Higher output home cinema |
Medium to large rooms |
| HT/1510 Predator MKII |
15" |
1,000W Class A/B |
Reference-level cinema systems |
Large dedicated rooms |
Ideal For
- Compact to medium-sized dedicated home cinema rooms
- AV receivers from Integra, Onkyo
- Movie enthusiasts seeking fast, impactful LFE performance
- Gaming systems requiring dynamic and controlled bass
- Multi-subwoofer Dolby Atmos installations
Why We Selected the REL HT/1003 MKII
At ExclusivIT, we appreciate products that combine thoughtful engineering with real-world usability. The REL HT/1003 MKII stands out because it delivers genuine cinematic impact from a remarkably compact enclosure. Rather than pursuing sheer output alone, REL focuses on speed, control and integration, resulting in bass that enhances movie soundtracks without overwhelming the rest of the system.
For customers building a premium home cinema in a living room or medium-sized dedicated space, the HT/1003 MKII offers an excellent balance of performance, build quality and placement flexibility while retaining the reliability for which REL is widely respected.
