Connection context
Inputs: 2 × Low Level RCA or 1 × LFE RCA. Outputs: Daisy-chain: 2 × Low Level RCA or 1 × LFE RCA. Wireless: HT-Air MKII is manufacturer-listed as an optional accessory.
REL ACOUSTICS · SUBWOOFERS
HT/1205 MKII
HT/1205 MKII uses a sealed front-firing CarbonGlas driver, Class D amplification and low-level/LFE connections with daisy-chain output. It requires processor-aware setup and measured room integration.
$1,999
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.
New product · Enquiry only · No online checkout
WHO IT IS FOR
Who it is for
Primary roles
- The middle Serie HT model, adding driver area and amplifier output while retaining an LFE-led connection architecture.
ARCHITECTURE
Verified features, explained in system context.
Installation and integration
Use low-level/LFE connection guidance only. Keep ventilation and mains-disconnect clearances specified in the manual. Do not vertically stack HT/1205 MKII.
SYSTEM / ROOM MATCHING
System / room matching notes
Connections, room context, installation and the listening objective are reviewed together before a configuration is proposed.
Fit to confirm
- Requires low-level RCA or an LFE RCA signal; no High Level input is provided.
- Daisy-chain outputs support a designed signal topology but are not a quantity recommendation.
- Processor crossover, timing, gain and phase need system-specific review.
Known boundaries
- 22 Hz is a manufacturer -6 dB specification, not measured response.
- No High Level input is fitted.
- The model is not designed for vertical line-array stacking.
ROOM & INSTALLATION
Conditions to establish before specification.
- Confirm cabinet clearance and possible locations before selection.
- Room size alone cannot predict output requirement, modal response or the number of subwoofers.
TECHNICAL REFERENCE
Specifications grouped for useful comparison.
Manufacturer specifications
- Type
- Closed box; front-firing active driver
- Active driver
- 12 in / 300 mm CarbonGlas
- Passive radiator
- None
- Manufacturer low-frequency extension
- -6 dB at 22 Hz
- Power output
- 500 W RMS
- Amplifier
- Class D
- Dimensions (W × H × D)
- 413 × 387 × 438 mm
- Net weight
- 19.6 kg
- Manufacturer-listed finish family
- Line-grained composite cabinet with gloss top plate; current global feed shows Black and 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 reviewed base single-unit configuration. Finish, accessories, pairing and any other configuration are confirmed in writing before an order is accepted.
ADJACENT ROLES
Compare architecture before choosing a model.
REL ACOUSTICS · SUBWOOFERS
HT/1510 Predator
HT/1510 Predator combines a sealed front-firing 15-inch CarbonGlas driver, 1,000-watt amplification, RCA and XLR LFE connections, and manufacturer-designed stacking hardware. Selection and installation require room, electrical and structural review.
$4,199
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.
REL ACOUSTICS · SUBWOOFERS
HT/1003 MKII
HT/1003 MKII is built around low-level and LFE connectivity, a sealed front-firing 10-inch driver and 300-watt Class D amplification. It does not provide REL High Level input.
$1,599
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.
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 HT/1205 MKII cover?+
$1,999 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.
SOURCES & REVIEW
Product facts remain traceable.
Official REL Acoustics source material checked 23 July 2026. The published Australian price is paired with 2-year standard Australian warranty. Availability and expected delivery timing remain subject to order confirmation.
AUSTRALIAN ENQUIRY & SUPPORT
Australian enquiry and support path
Ask about availability for HT/1205 MKII, then share the system and decision in front of you. MSN Audio will confirm the supplied configuration, Australian support path and whether this product is relevant.
REL AcousticsHT/1205 MKII
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