REL Acoustics Serie HT 12-Inch Powered Subwoofer in White (Each) - HT/1205MKII WHITE

REL Acoustics HT/1205MKII WHITE Serie HT 12-Inch Powered Subwoofer in White (Each)

The REL Acoustics HT/1205MKII WHITE Serie HT powered subwoofer pairs a sealed, front-firing 12 in CarbonGlas driver with a built-in 500-watt RMS Class D amplifier and in-room low-frequency extension of -6 dB at 22 Hz. Low-level stereo RCA and LFE RCA connections support home theater and music-system use. Designed to balance forceful effects with delicate sounds and their decay, it brings the physical involvement of film soundtracks into the listening room. A glossy white top and fine-grain white cabinet finish suit visible living spaces.

Key Features

12 in CarbonGlas Long-Throw Driver

A revised glass-fiber cone weave and inverted carbon-fiber center cap reinforce the moving surface without excessive moving mass. Strengthened suspension, a custom surround and flexible tinsel leads accommodate greater excursion, helping the driver handle the substantial dynamics of movie effects while retaining the design's attention to delicate sounds.

500 Watts RMS of Built-In Class D Power

The amplifier, power supply and output stages were redeveloped together with the driver, rather than treating the woofer as an isolated upgrade. Cool-running Class D amplification conserves cabinet volume, and the built-in design means you do not need a separate power amplifier for the subwoofer.

PerfectFilters for Impact and Detail

Low-bass shaping works with revised secondary filtering to keep an explosion's initial attack from getting lost beneath its heavier low-frequency component. Subsonic filtering begins at 8 Hz to protect against excessive infrabass; that setting is protective, not a claim of usable bass extension to 8 Hz.

Braced Sealed Enclosure

A felt-lined motor-support brace supports the driver assembly and damps the enclosure walls. Its layout leaves the motor's rear ventilation path unobstructed, rather than placing a conventional brace directly behind it. This construction supports the moving assembly without blocking its airflow.

RCA/LFE Connections and Manual Integration

Use the LFE RCA input for a system's dedicated .1 channel, or the low-level stereo RCA inputs for a line-level music connection. A 30-200 Hz adjustable crossover, 0/180 degrees phase switch and expanded gain-matching range help blend bass with high- or low-efficiency speakers. Matching RCA daisy-chain outputs support additional subwoofer connections. This RCA-only design does not support XLR connections or vertical line-array stacking.

Optional HT-Air MKII Wireless

When a long RCA run would complicate placement, the compatible HT-Air MKII wireless adapter offers an alternative signal connection. It is sold separately, not built into the subwoofer. AC power is still required, and the supplied 6 ft power cord handles the subwoofer's mains connection; an RCA interconnect is not included.

White Finish with Contrasting Textures

A glossy white top contrasts with a finer white line-grain body texture, giving the cabinet a lighter presence in a decorated room. The white grille, light-gray feet and soft-gold crown logo with a slight rose-gold tone complete the finish. Styling is intended to harmonize with Serie T/x and Serie S components in mixed movie and music systems.

Features

• 12 in CarbonGlas Driver
  A steel chassis supports the long-throw, glass-fiber and carbon-fiber reinforced cone assembly.
• 500-Watt RMS Class D Amplifier
  Revised power-supply and output stages work with the upgraded driver.
• PerfectFilters
  Balances low-bass weight with the leading edge of movie effects.
• 8 Hz Subsonic Protection
  Limits excessive infrabass rather than extending the rated playback range.
• Felt-Lined Motor-Support Brace
  Damps cabinet walls while keeping the rear ventilation path clear.
• Stereo RCA and LFE Inputs
  Accepts line-level stereo or dedicated home theater bass signals.
• 30-200 Hz Crossover and 0/180 Degrees Phase
  Manual controls help match the subwoofer to connected speakers.
• Expanded Gain-Matching Range
  Accommodates both high- and low-efficiency loudspeakers.
• RCA Daisy-Chain Outputs
  Provides low-level stereo or LFE connections for additional subwoofers.
• Optional HT-Air MKII Compatibility
  A separately sold wireless adapter reduces long RCA cable runs.
• Coordinated White Finish
  Glossy and fine-grain surfaces pair with a white grille, light-gray feet and warm-toned crown logo.
• Electronic Protection Systems
  Includes Set Safe, DC fault and output-short protection.

Footnotes:

Performance figures reflect manufacturer testing under specific conditions; results vary with the room, settings and use.