
Two-Way Passive
Full-range 4” ceiling speaker
The Optimal Audio Up 4 is a compact full-range ceiling speaker designed for clear, balanced audio in commercial environments. Featuring a 4-inch driver and silk dome tweeter, it delivers wide sound coverage and supports both low-impedance and 70V/100V line systems. With an enclosed backcan for improved sound isolation and easy installation, the Up 4 is ideal for retail, hospitality, and office applications.


Up 4 is a discreet, two-way 4” ceiling speaker delivering consistent coverage and full frequency sound to a wide range of cost conscious, commercial environments from hotels and concourses to retail outlets, bars and restaurants.
An integral fixing system is included to achieve a simple and clean installation. Up 4 has a steel backcan and perforated steel grille and is finished in neutral white.
The Pendant1 and Grille1 accessories offer further flexibility in installation and applications, allowing you to either elegantly suspend Up 4 speakers as stylish pendants or achieve a sleek, bezel-less grille appearance. These accessories are available in both black and white, helping to blend into any architectural environment.
Up 4 features a 4” (105mm) low frequency driver paired with a 0.7” (20mm) silk dome tweeter. It is suitable for both high quality speech and music reproduction. A conical 120° coverage pattern delivers consistent sound where it needs to go.
Each Up 4 can be run on a series of 70 or 100 Volt taps or at low impedance. Tap selection is via a rotary switch behind the removable grille.
A SmartAmp or powered Zone will provide amplification, optimal sound performance and loudspeaker protection via presets. When coupled with a Zone and WebApp system set up and end user control is easy, and can be further supplemented by ZonePad wall controllers.
Data sheets, manuals and resources for the Up 4

Our AV experts are ready to help you find the perfect solution for your project.
Up 4 is a discreet, two-way 4” ceiling speaker delivering consistent coverage and full frequency sound to a wide range of cost conscious, commercial environments from hotels and concourses to retail outlets, bars and restaurants.
An integral fixing system is included to achieve a simple and clean installation. Up 4 has a steel backcan and perforated steel grille and is finished in neutral white.
The Pendant1 and Grille1 accessories offer further flexibility in installation and applications, allowing you to either elegantly suspend Up 4 speakers as stylish pendants or achieve a sleek, bezel-less grille appearance. These accessories are available in both black and white, helping to blend into any architectural environment.
Up 4 features a 4” (105mm) low frequency driver paired with a 0.7” (20mm) silk dome tweeter. It is suitable for both high quality speech and music reproduction. A conical 120° coverage pattern delivers consistent sound where it needs to go.
Each Up 4 can be run on a series of 70 or 100 Volt taps or at low impedance. Tap selection is via a rotary switch behind the removable grille.
A SmartAmp or powered Zone will provide amplification, optimal sound performance and loudspeaker protection via presets. When coupled with a Zone and WebApp system set up and end user control is easy, and can be further supplemented by ZonePad wall controllers.
| TYPE | Two-way, full range, passive, ceiling speaker |
| FREQUENCY RESPONSE (with preset) | 100Hz - 18kHz ± 3dB -10dB @ 74Hz |
| DRIVERS | LF: 4” (105mm), Coated paper, HF: 0.7” (20mm) Silk Dome |
| RATED POWER | 30W (AES) 60W (peak) |
| NOMINAL IMPEDANCE | 8Ω |
| SENSITIVITY (1W/1m) | 87dB |
| MAXIMUM SPL | 102dB (cont), 105dB (peak) |
| CROSSOVER | 3.5kHz passive |
| RECOMMENDED HIGH-PASS FILTER | 24dB/octave @ 90Hz |
| TRANSFORMER TAPS @ 70V | 25, 12.5, 6.3, 3.2W |
| TRANSFORMER TAPS @ 100V | 25, 12.5, 6.3W |
| DISPERSION (-6dB) | 120˚ conical |
| BACK CAN | Zinc-plated Steel |
| BAFFLE | ABS |
| PROTECTIVE GRILLE | Perforated steel with cloth backing |
| FIRE RATING | UL94-V0 |
| CONNECTORS | 4 Pin Euroblock with link out |
| FITTINGS | C-ring support backing plate |
| DIMENSIONS (inc. Grille) | (Ø) 202mm x (D) 227.5mm (Ø) 7.95” x (D) 8.96” |
| CUT-OUT DIAMETER | 178mm (7.01”) |
| WEIGHT | 2.2kg (4.9lbs |
| INCLUDED ACCESSORIES | 2 tile support rails (for 2 ft or 600 mm tile spans), cutout template, paint shield, removable locking multi-pin connector |
| RECOMMENDED SUB | Sub 10 |
| RECOMMENDED AMPLIFIER | Zone 4P, Zone 8P or SmartAmp series |
About Penguin Media Solutions
Penguin Media Solutions is a professional audio, video, and lighting design, installation, and maintenance company based in Brighton, UK. As an authorised Martin Audio dealer, we provide high-performance AV systems for commercial venues, hospitality, and event spaces across Brighton, London, and South-East England.
Pages

© 2026 Penguin Media Solutions. All rights reserved.
Powered by Ganda Media