REL Acoustics Classic 99 12-Inch Powered Subwoofer in Walnut Veneer (Each) - CLASSIC 99

REL Acoustics Classic 99 12-Inch Powered Subwoofer in Walnut Veneer (Each)

The REL Acoustics Classic 99 Line powered subwoofer combines a 12 in down-firing paper driver, a built-in 450-watt RMS Class D amplifier and sealed acoustic-suspension construction. Rated for in-room low-frequency extension of -6 dB at 24 Hz, it offers high-level Neutrik Speakon, low-level RCA and dedicated LFE RCA inputs for stereo and home theater connections. Genuine dark walnut veneer gives the Mid-Century Modern cabinet a warm, understated presence, complementing a music-first design intended for two-channel listening and smaller-scale movie systems.

Key Features

Hand-Fitted Dark Walnut Veneer

Vintage visual character meets contemporary subwoofer engineering in a cabinet designed to belong in a furnished listening room. Genuine dark walnut veneer is hand-fitted over walls up to 32 mm thick, while natural aluminum badges and blacked-out, billet-machined feet keep the detailing restrained. The feet lend a floating appearance, the concealed driver leaves the front uninterrupted, and white-gold-finished rear controls carry the period-inspired look around the back.

12 in Long-Stroke Paper Driver

The driver starts with a hot-pressed paper main cone that balances stiffness and low mass. A hand-thrown paper center cap adds randomized fibers for self-damping, helping the cone settle between musical passages so strong dynamic contrasts can emerge from a quiet background. Its inverted-cone assembly uses a steel chassis and directs bass downward rather than exposing a driver on the front of the cabinet.

450 Watts RMS and All-Analogue PerfectFilter

An all-analogue PerfectFilter input stage feeds the internal Class D amplifier, supporting a full, slightly warm presentation with nuance as well as bass weight. The closed-box acoustic-suspension enclosure has no port, and its published in-room response is -6 dB at 24 Hz. With amplification already onboard, adding low-frequency support to records and movies does not require a separate subwoofer power amplifier.

Optional Wireless, Without the Long Signal Cable

The separately sold HT-Air MKII Wireless accessory uses a 5.8 GHz platform and uncompressed transmission to reduce long signal-cable runs, giving you more flexibility when arranging a finished listening space.¹ AirShip II is another compatible wireless option, also sold separately. Wireless hardware is not built in or included, and the subwoofer still requires an AC power connection.

High-Level, Low-Level and LFE Connections

Match the input to your electronics: Neutrik Speakon accepts a high-level speaker signal, low-level left/right RCA inputs accept a line-level signal, and the dedicated .1/LFE RCA input accommodates an AV receiver's bass channel. A Neutrik Speakon cable is supplied for high-level hookup, so that interconnect does not have to be purchased separately.

Music-First Room Fit and Floor Placement

REL Acoustics suggests rooms of approximately 150-400 square feet, a starting point for matching this music-first design to your listening space rather than a guarantee of output. High-fidelity two-channel listening is the focus, with smaller-scale home theater use also supported.

This configuration supplies one subwoofer for floor placement, not vertical line-array stacking. A separately purchased second unit enables a stereo arrangement to support imaging and bass balance; mixed-model or larger multi-subwoofer systems need appropriate calibration. Allow an additional 1.75 in of depth when using the high-level connector.

Features

• Genuine Dark Walnut Veneer
  Hand-fitted wood veneer finishes a cabinet with walls up to 32 mm thick.
• Mid-Century Modern Details
  Subtle aluminum badges, machined black feet and white-gold-finished controls complete the vintage-inspired exterior.
• 12 in Long-Stroke Down-Firing Driver
  A hot-pressed paper cone and hand-thrown center cap combine lightness, stiffness and self-damping.
• 450 Watts RMS Class D Amplification
  The active driver has its own onboard power amplifier.
• All-Analogue PerfectFilter
  An analogue front end conditions the signal before amplification.
• Sealed Enclosure, -6 dB at 24 Hz
  Closed-box acoustic suspension provides specified in-room low-frequency reach.
• Optional 5.8 GHz HT-Air MKII Wireless
  A separately sold adapter transmits uncompressed low-level or LFE audio; AirShip II is also supported and sold separately.
• Neutrik Speakon, RCA and LFE Inputs
  Speaker-level and line-level connections accommodate stereo systems and AV receivers.
• 150-400 Square Foot Room Guidance
  The suggested listening-space range helps frame your system planning.
• Single-Subwoofer Floor Configuration
  Start with one unit or purchase a second separately for stereo bass.
• Fully Electronic Safeguards
  Set Safe, D.C. fault and output-short protection are included.
• Supplied Signal and Power Cables
  A high-level Neutrik Speakon interconnect and AC power cord come in the box.

Footnotes:

¹ HT-Air MKII supports left/right low-level or .1/LFE connections only; it does not carry a high-level signal.

Performance figures come from manufacturer testing under specific conditions and vary with the room, settings and use.