REL HT/1003 MKII Serie HT 10 Inch Active Home Theater Subwoofer

Compact dimensions, serious performance, and unmistakable REL engineering for modern home theater systems.

The Compact Cannon of the Serie HT Family

The REL HT/1003 MKII was created for listeners who want authentic home theater impact without dedicating a significant portion of their room to a large subwoofer. It brings the engineering advances developed for REL's larger Serie HT models into a compact enclosure that fits naturally into apartments, media rooms, family rooms, and smaller dedicated theaters.

At All Elite Audio, we often recommend the HT/1003 MKII to customers who are building their first serious surround system or looking to upgrade from an entry level subwoofer. Its combination of output, speed, reliability, and value makes it one of the strongest performers in its class. While compact in size, it delivers the authority and realism necessary to transform movie watching, gaming, and television into a far more immersive experience.

A 10 Inch CarbonGlas Driver Engineered for Speed

The heart of the HT/1003 MKII is REL's 10 inch long throw CarbonGlas driver. This advanced design combines a lightweight glass fiber cone with a rigid inverted carbon fiber center cap. The result is a driver that remains responsive and accurate while handling substantial excursion demands.

The advantages become obvious during both movies and music. Bass notes start and stop quickly. Explosions have impact without sounding bloated. Musical bass lines retain texture and definition. By reducing unwanted cone flex while maintaining low moving mass, the CarbonGlas design helps the HT/1003 MKII deliver bass that sounds larger and more controlled than many competing compact subwoofers.

300 Watts of High Current Amplification

Powering the HT/1003 MKII is a 300 watt Class D amplifier designed specifically for REL's Serie HT platform. The amplifier provides excellent current delivery and dynamic headroom while operating efficiently and reliably.

REL carefully matched the amplifier to the CarbonGlas driver to maximize performance. The result is a system capable of impressive output levels while maintaining control and composure. Whether reproducing the low frequency effects of a blockbuster film or the rhythmic foundation of a music recording, the amplifier delivers bass with confidence and authority.

PerfectFilter Technology

One of the key advantages of the MKII generation is REL's proprietary PerfectFilter technology. Rather than relying on excessive digital processing, PerfectFilter optimizes the relationship between the amplifier, driver, and enclosure.

This engineering approach improves low frequency extension, transient response, and overall system control. The practical result is deeper bass, cleaner bass, and more convincing bass. Effects hit harder, musical passages remain more articulate, and the overall listening experience feels more engaging and realistic.

Designed for Modern Living Spaces

Not every room can accommodate a massive subwoofer. The HT/1003 MKII was engineered specifically for environments where space matters but performance cannot be compromised.

Its compact dimensions make placement significantly easier than larger designs. It can fit comfortably beside furniture, within entertainment systems, or in rooms where larger subwoofers would dominate the space. Despite its manageable footprint, it remains capable of delivering substantial low frequency energy and room filling performance.

For apartments, condominiums, family rooms, and smaller dedicated theaters, the HT/1003 MKII often represents the ideal balance of size and output.

Home Theater First, REL Quality Throughout

The Serie HT range was developed with home theater as its primary mission. The HT/1003 MKII excels at reproducing the impact and excitement of modern movie soundtracks. Deep effects gain weight and authority. Action scenes become more engaging. Environmental effects feel more realistic and immersive.

At the same time, REL's commitment to speed and timing ensures the HT/1003 MKII remains enjoyable with music. Bass guitars sound natural. Kick drums retain their attack. Electronic music benefits from impressive control and rhythm. The result is a subwoofer that performs well across a wide variety of content.

The Ideal Starting Point for a Dual Subwoofer System

Many customers begin with a single HT/1003 MKII and later add a second unit. Dual subwoofers often provide smoother bass response throughout the room, improved consistency across multiple seating positions, and greater dynamic headroom.

For many medium sized rooms, a pair of HT/1003 MKII subwoofers can outperform a single larger subwoofer while offering more flexible placement options. This scalability makes the HT/1003 MKII an excellent long term investment.

How the HT/1003 MKII Compares to the HT/1205 MKII

The HT/1205 MKII occupies the next step in the Serie HT lineup and utilizes a larger 12 inch driver and a more powerful amplifier. This allows it to produce greater output and energize larger rooms more effectively.

The HT/1003 MKII remains the better choice for many smaller environments. Its compact cabinet simplifies placement, its lower price makes it highly accessible, and its performance is more than sufficient for many listening spaces. For customers seeking the best balance of size, performance, and value, the HT/1003 MKII is an exceptional option.

Premium Construction and Modern Styling

REL understands that a subwoofer should complement a room visually as well as sonically. The HT/1003 MKII features clean modern styling, a durable line grained composite enclosure, and a high gloss top panel that elevates its appearance beyond what is typically found at this price point.

The cabinet is heavily braced to reduce unwanted vibration and coloration. This attention to construction contributes not only to improved reliability but also to cleaner, more accurate bass reproduction.

Key Specifications Block

• Product: REL HT/1003 MKII
• Category: Active Home Theater Subwoofer
• Price: $699
• Series: Serie HT
• Type:
  • Sealed Enclosure
  • Front Firing Design
• Driver:
  • 10 Inch Long Throw CarbonGlas Driver
  • Inverted Carbon Fiber Center Cap
  • Steel Chassis
• Amplifier:
  • 300 Watt RMS Class D
• Low Frequency Extension:
  • 24 Hz at Minus 6 dB
• Inputs:
  • Stereo RCA Low Level
  • RCA LFE
• Outputs:
  • Stereo RCA Output
  • RCA LFE Output
• Wireless Compatibility:
  • Compatible with REL HT Air MKII
• Cabinet:
  • Internally Braced Sealed Enclosure
• Finish:
  • Line Grained Black Composite
  • High Gloss Top Panel
• Dimensions:
  • 13 x 14 x 15.7 Inches
  • 330 x 356 x 400 mm
• Weight:
  • 30.8 Pounds
  • 14 kg
• Included Accessories:
  • AC Power Cord
  • User Manual
• Warranty:
  • 3 Year Parts and Labor Warranty

Why Buy From All Elite Audio

All Elite Audio is an authorized dealer for REL and every brand we carry. Every product we sell is sourced directly through authorized distribution channels and includes full manufacturer warranty coverage and support.

Call: 443-402-5055

Text: 443-402-5064

Visit: 1921 York Rd, Timonium, MD 21093

FAQ

Who is the HT/1003 MKII designed for?

The HT/1003 MKII is ideal for listeners who want serious home theater performance in a compact package. It works particularly well in apartments, condominiums, family rooms, and smaller dedicated theaters. Its manageable size allows flexible placement while still delivering impressive low frequency performance. For many customers, it represents the perfect first step into high performance bass.

Is the HT/1003 MKII good for music?

Yes. While the Serie HT range was developed primarily for home theater applications, REL's focus on speed and transient accuracy allows the HT/1003 MKII to perform very well with music. Bass remains tight, controlled, and articulate. Many owners use it successfully in systems that handle both movies and music.

What is CarbonGlas technology?

CarbonGlas combines a lightweight glass fiber cone with an inverted carbon fiber center cap. This design improves rigidity while keeping moving mass low. The result is faster response, lower distortion, and better control. It helps the HT/1003 MKII deliver bass that sounds both powerful and precise.

What does PerfectFilter do?

PerfectFilter is REL's proprietary filtering technology developed specifically for the Serie HT lineup. It optimizes the interaction between the amplifier and driver to improve extension and transient performance. The result is deeper bass, cleaner bass, and greater overall realism. It is one of the key reasons the MKII models outperform their predecessors.

What size room is best for the HT/1003 MKII?

The HT/1003 MKII performs exceptionally well in small to medium sized rooms. It is particularly effective in spaces where larger subwoofers would be difficult to place. While it can be used in larger rooms, many customers choose dual units for maximum performance in those environments.

Should I buy one or two HT/1003 MKII subwoofers?

A single HT/1003 MKII delivers excellent performance for many systems. However, two subwoofers often provide smoother bass response, greater dynamic capability, and improved room coverage. Many enthusiasts eventually add a second unit because of the noticeable performance improvements.

How does it compare to the HT/1205 MKII?

The HT/1205 MKII uses a larger 12 inch driver and a more powerful amplifier, allowing it to produce greater output and deeper extension. The HT/1003 MKII offers a more compact enclosure and lower price. For smaller rooms, many listeners find the HT/1003 MKII provides all the performance they need.

Is wireless operation available?

Yes. The HT/1003 MKII is compatible with REL HT Air MKII wireless technology. This allows flexible placement without running long signal cables across the room. Wireless capability can simplify installation and improve room aesthetics.

Can the HT/1003 MKII be part of a larger system later?

Absolutely. Many owners start with one HT/1003 MKII and later add a second subwoofer. This creates smoother bass distribution and improves overall system performance. The HT/1003 MKII is an excellent platform for future expansion.

Where can I buy the REL HT/1003 MKII?

You can purchase the REL HT/1003 MKII directly from All Elite Audio. As an authorized REL dealer, we provide expert system matching, setup guidance, manufacturer warranty support, and personalized assistance before and after the sale. Whether you are building your first surround system or upgrading an existing theater, our team can help you choose the right solution for your room and listening goals.

Call: 443-402-5055

Text: 443-402-5064

Visit: 1921 York Rd, Timonium, MD 21093