- Impedance
- 8 Ohms nominal
- Frequency Response
- -3 dB at 21 Hz
- Power Handling
- Continuous 1800W / Peak 3600W
Price $12,499
Includes GST
Voted Australia's #1 Hi-Fi Retailer, Sound+Image Awards 2023. Family owned since 2010.
Hear the U21 before you decide
Book a private listening session in Belrose and ask for the U21: we will confirm what we can set up for you. Or audition it at home.
Set-up and installation
Our team can deliver, install and set up your system, from speaker placement to a full cinema calibration. Ask us for a quote when you order.
Returns
Your rights under Australian Consumer Law always apply. Read our returns policy.
Procella Audio U21
Specifications
- Impedance
- 8 Ohms nominal
- Frequency Response
- -3 dB at 21 Hz
- Power Handling
- Continuous 1800W / Peak 3600W
- Maximum SPL
- Continuous 124.7 dB / Peak 127.4 dB
- Components
- Professional 21” driver, 4.5” voice coil, neodymium magnet, 110 litre sealed enclosure
- Connectivity
- Gold plated binding posts
- Amplifier
- External, sold separately; 2-ch bridge DA08-DSP
- Construction
- Internally heavily braced MDF, semi-matte textured black lacquer
- Dimensions & Weight
- 805 × 700 × 290 mm (300 mm with grille), 48 kg
- Shipping Carton
- 803 × 908 × 375 mm, 52 kg
- Included
- Installation guide
- Assembly
- Belgium, 100% QC testing
In detail
About the U21
The U21 is where the UNO series steps into serious low-frequency territory. Designed for large rooms and high-output systems, it delivers deep, controlled bass with the precision and consistency Procella is known for.
It’s not just about moving air; it’s about controlling it. The U21 keeps every hit tight, every rumble defined, even at high SPL. No excess, no blur. Just low-frequency performance that stays locked into the mix, exactly as intended.
For systems that demand more headroom, more depth, and more authority, the U21 brings the foundation in line with the rest of the experience.Part of the UNO series.
Built to keep up when everything else scales.
By appointment
Hear it in a real room.
Specifications only tell half the story. Book a private listening session in our Belrose showroom, bring the music you know best, and ask for the U21.
Voted Australia's #1 Hi-Fi Retailer, Sound+Image Awards 2023
- Family owned since 2010
- Talk to the people who will look after you.
- Listen in Belrose
- Private listening sessions, by appointment.
- Designed and installed
- Cinemas and listening rooms by our own team. (02) 8088 3088
Pairs with the U21
Complete the system
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