◆ Dominion TierAscendo Ascendo 15SPV 15" Passive Vented Subwoofer Subwoofers
Ascendo
◆ Flagship · Reference tier · By specification

Ascendo 15SPV 15" Passive Vented Subwoofer

Price on application

A reference-tier component supplied by specification and private consultation, matched to your room, delivered and calibrated. We'll prepare a tailored proposal for you.

A proposal covers the component, professional installation and full calibration, matched to your room and priced as a finished result, not just the box.

1800 100 998
Not sold through online checkout. Reference-tier products are specified, supplied and installed through a specialist.
Authorised Australian dealer · genuine stock · full manufacturer warranty

Overview

ASCENDO THE15 SUB Passive Vented Subwoofer – Precision Bass with Compact Power

The ASCENDO THE15 SUB Passive Vented Subwoofer delivers deep, impactful bass in a versatile 15-inch format. Engineered for audiophiles, home theatre enthusiasts, and professional setups, this high-performance subwoofer combines power, precision, and efficiency, ensuring a tight and immersive low-frequency response. To top it off it's only 250mm deep, making it perfect to be positioned behind acoustically transparent screen walls.

Powerful and Detailed Low-End Performance

Equipped with a 15-inch forward-firing driver and a 3-inch voice coil, the THE15 SUB Passive Vented reproduces rich and powerful bass with minimal distortion. With a frequency response extending down to 27Hz, it delivers deep, cinematic sound that enhances movies, music, and gaming experiences.

Precision-Tuned for Clarity and Control

The internally braced MDF enclosure is designed to eliminate unwanted vibrations, ensuring clean and accurate bass reproduction. Its vented design enhances airflow for a more natural and powerful low-end response, ideal for both home cinema and high-fidelity audio setups.

High-Powered Performance in a Compact Design

The ASCENDO THE15 SUB Passive Vented offers 1000W of power handling with a 4-ohm impedance, making it a perfect match for high-performance amplifiers. It reaches an impressive 120dB SPL at 50Hz and 116dB SPL at 30Hz, ensuring powerful, distortion-free bass that remains tight and controlled at all volume levels.

Key Features of the ASCENDO THE15 SUB Passive Vented

  • 15” High-Excursion Woofer – Deep and controlled bass with a 3” voice coil for optimal power handling.
  • Vented, Passive Design – Maximises efficiency while providing a rich and natural low-frequency response.
  • Internally Braced MDF Enclosure – Minimises resonance and delivers tight, accurate bass reproduction.
  • Wide Frequency Response – 27Hz - 400Hz (-12dB) for detailed and immersive low-end sound.
  • Optimised for High Power Handling – 1000W power rating for room-filling bass.
  • Precision Efficiency – 89 dB / 1W/m (4π) and 95 dB / 1W/m (2π) for enhanced performance.
  • Professional-Grade Input Terminal – 4-conductor Phoenix 12 AWG connectors for secure and efficient signal transmission.

Seamless Integration into Your Audio System

The minimum recommended amplifier should provide 52.9 Vrms, 74.8 Vpk, and 13.2A, equivalent to 700W@4Ω with the correct RMS and peak limiter settings for optimal performance.

Compact Yet Powerful Design

Measuring 600mm (W) x 782mm (H) x 250mm (D) (without grille), the THE15 SUB Passive Vented delivers exceptional bass performance in a compact, floor-standing design. Its sleek black structural paint finish ensures it blends seamlessly into any home theatre or professional audio environment.

Upgrade Your Bass Experience with the ASCENDO THE15 SUB Passive Vented

The ASCENDO THE15 SUB Passive Vented Subwoofer is the perfect balance of power and precision, making it an ideal choice for high-performance home theatres, audiophile systems, and professional audio setups. With its tight, deep bass response and premium build quality, this subwoofer ensures an immersive and dynamic listening experience.

Specifications

Speaker Type 15" forward-firing subwoofer with 3” voice coil
Design Principle Passive, Vented
Enclosure Material Internally braced MDF
Finish Structural black paint
Mounting Floor-standing with feet
Impedance 4 Ω
Power Handling 1000W
Efficiency 89 dB / 1W/m (4π), 95 dB / 1W/m (2π)
Frequency Range 59 Hz - 400 Hz (-3 dB) / 27 Hz - 400 Hz (-12 dB)
Peak SPL 120 dB @ 50 Hz, 116 dB @ 30 Hz
Excursion (Xmax) 6 mm each direction (12 mm total)
Input Terminal 4-conductor Phoenix 12 AWG (3.3 mm²)
Recommended Amplifiers AIA2-1404 Bridged, AIA2-2704, AIA4-6004, AIA8-6004 Bridged
Minimum Recommended Amplifier 52.9 Vrms, 74.8 Vpk, 13.2A (equivalent to 700W@4Ω with correct RMS & peak limiter settings)
Directivity (Horizontal x Vertical) 360°
Dimensions (W x H x D) (without grille) 600 x 782 x 250 mm (23 5/8" x 30 3/4" x 9 13/16")
Height Without Feet 770 mm (30 5/16")
Packing Dimensions (W x H x D) 740 x 910 x 380 mm (29 1/8" x 35 13/16" x 14 15/16")
Gross Weight 37.7 kg (83.11 lbs)
Net Weight 32.7 kg (72.09 lbs)

 

Dominion · Private Cinema

Equipment is only half the science. The room is the other half.

A reference component like this only performs in an acoustically engineered, light-controlled space. Discover how Dominion designs and builds uncompromised private cinemas around elite hardware, engineered as architecture.

Discover Dominion

Specifications

Indicative: a full specification is prepared for your room. Request the datasheet

By appointment

How a reference commission works

I

Enquire

Tell us about your room and what you want to achieve. No obligation.

II

Private consultation

A specialist reviews your space, in person or online, and what you want to achieve.

III

Specification & proposal

We match the component and its setup to your room, and prepare a tailored proposal.

IV

Delivery & calibration

White-glove installation and on-site calibration to reference, supported locally.

Enquire about this product

Tell us a little about your room and we'll prepare a tailored proposal, or arrange a private demonstration.

Ascendo 15SPV 15" Passive Vented Subwoofer · Price on application