Optimal Audio

Optimal Audio Up 4

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
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Technical Specifications

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
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

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.

  • 4” coaxial driver 
  • Discreet size
  • Unobtrusive design
  • 8 ohm or 70/100V line operation
  • Range of power taps
  • Wide conical coverage pattern
  • Integrated mounting hardware
  • Pendant and bezel-less grille accessory available


TYPETwo-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 POWER30W (AES) 60W (peak)
NOMINAL IMPEDANCE
SENSITIVITY (1W/1m)87dB
MAXIMUM SPL 102dB (cont), 105dB (peak)
CROSSOVER3.5kHz passive
RECOMMENDED HIGH-PASS FILTER24dB/octave @ 90Hz
TRANSFORMER TAPS @ 70V25, 12.5, 6.3, 3.2W
TRANSFORMER TAPS @ 100V25, 12.5, 6.3W
DISPERSION (-6dB) 120˚ conical
BACK CANZinc-plated Steel
BAFFLEABS
PROTECTIVE GRILLEPerforated steel with cloth backing
FIRE RATINGUL94-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 DIAMETER178mm (7.01”)
WEIGHT 2.2kg (4.9lbs
INCLUDED ACCESSORIES2 tile support rails (for 2 ft or 600 mm tile spans), cutout template, paint shield, removable locking multi-pin connector
RECOMMENDED SUBSub 10
RECOMMENDED AMPLIFIERZone 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.

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