Connection context
Inputs: High Level Neutrik Speakon, 1 × Low Level RCA, 1 × LFE RCA. Outputs: None. Wireless: HT-Air MKII is manufacturer-listed as an optional accessory for low-level/LFE use.
REL ACOUSTICS · SUBWOOFERS
Tzero MKIII
A sealed, down-firing 6.5-inch aluminium driver and 100-watt Class D amplifier create REL’s compact music-first entry, with a separate LFE input for mixed use.
$949
2-year standard Australian warrantyAvailable to order in Australia. Stock and delivery timing are confirmed for each enquiry.Base single-unit configuration. Optional finishes, grilles, accessories, pairs and arrays are confirmed separately.
Free shipping Australia-wide. Change-of-mind returns are not accepted. This does not limit rights available under Australian Consumer Law.
New product · Enquiry only · No online checkout
WHO IT IS FOR
Who it is for
Primary roles
- For smaller systems that need greater low-frequency continuity and weight without the cabinet size or output ambition of Serie T/x.
ARCHITECTURE
Understand what each feature means in a complete system.
Installation and integration
Use the region-correct mains unit and maintain the ventilation clearances in the manual. High Level wiring must be verified for the connected amplifier, especially Class D, balanced or differential designs. The model is not designed for vertical line-array stacking.
SYSTEM / ROOM MATCHING
Will it fit the system you already own?
We consider connections, room context, installation and your listening priorities together before suggesting a configuration.
What to check for your system
- A candidate where High Level integration with a compatible amplifier is desired.
- Can also accept a low-level preamplifier signal or a dedicated RCA LFE signal.
- The final connection method must be checked against the amplifier topology and system goals.
What to keep in mind
- The manufacturer's 37 Hz at -6 dB figure is a specification, not measured extension in your room.
- No automatic room-size, speaker-pairing, quantity or placement claim is made.
- The 37 Hz figure is a manufacturer -6 dB specification. HT-Air MKII does not transmit the High Level signal, and global availability must be confirmed locally.
ROOM & INSTALLATION
What to confirm before choosing the final configuration.
- Compact music systems, offices and restrained living spaces with realistic listening levels and usable floor positions.
- Confirm the main loudspeakers’ roll-off, the intended level and whether a compact single source can address the actual room problem.
TECHNICAL REFERENCE
Specifications grouped for useful comparison.
Manufacturer specifications
- Type
- Closed box; down-firing active driver
- Active driver
- 6.5 in / 165 mm long-throw aluminium cone
- Passive radiator
- None
- Manufacturer low-frequency extension
- -6 dB at 37 Hz
- Power output
- 100 W RMS
- Amplifier
- Class D
- Dimensions (W × H × D)
- 216 × 241 × 260 mm
- Net weight
- 6.8 kg
- Manufacturer-listed finishes
- Piano Black or Gloss White
EXTERIOR & CONFIGURATION
Confirm the supplied product, not just the model name.
Finish
Current finish options are confirmed during the enquiry. Official media identifies the model but is not an inventory promise.
Supplied configuration
The displayed price is for the base single-unit configuration. Finish, accessories, pairing and any other configuration are confirmed in writing before an order is accepted.
MEASUREMENT REMAINS INDEPENDENT
Establish the room evidence before prescribing a product outcome.
Room & Bass Measurement can identify the bands and decay behaviour that deserve attention without presuming this product, a quantity or a placement is the answer. The service does not require a product purchase.
FAQ
Before you enquire.
What does the Australian price for Tzero MKIII cover?+
$949 is the base single-unit price with a two-year standard Australian warranty. Optional finishes, grilles, accessories, pairs or arrays are confirmed separately. Availability does not imply local stock or a fixed delivery time. These warranty terms do not limit statutory consumer guarantees under Australian Consumer Law.
PRODUCT INFORMATION
See where the product facts come from.
Official REL Acoustics information was checked 23 July 2026. The Australian price includes 2-year standard Australian warranty. We confirm availability and expected delivery timing when you enquire.
AUSTRALIAN ENQUIRY & SUPPORT
Enquire about REL Tzero MKIII
Considering the REL Tzero MKIII? Tell us about your loudspeakers, room and current low-frequency setup. We’ll confirm Australian availability, answer your questions, and help you determine whether this model makes sense for your system and how it should be integrated.
REL AcousticsTzero MKIII
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