Optimal Audio UP4S White Pair - A pair of discreet passive 4” speakers that provide consistent coverage and full-frequency sound for a wide range of commercial environments, such as hotels, shopping centres, restaurants, and bars. It features a 4” (105mm) driver for low frequencies and a 0.7” (20mm) silk dome tweeter, making it ideal for high-quality vocal and musical reproduction.
The Pendant 1 and Grille 1 accessories offer additional flexibility in installation, allowing for elegant suspension of the speakers or achieving a look without visible grilles. These accessories are available in both white and black. The wide coverage of 150° makes the UP 4S suitable for low ceilings, reducing the number of speakers needed for uniform coverage and, consequently, installation costs. The steel back enclosure and perforated grille provide protection, while the white finish makes it easy to integrate into any architectural environment.
The UP 4S can operate on 70V or 100V lines or at low impedance. Tap selection is done via a rotary switch located under the removable grille. SmartAmp and Zone amplifiers ensure optimal performance and protection of the speakers through presets, while system setup and final user control are simplified through the WebApp and can be complemented with ZonePad controllers.
Features
- 4” coaxial driver
- discreet size with slim back enclosure
- non-intrusive design
- operates on 8 ohm line or 70/100V
- range of power taps
- wide conical coverage pattern
- integrated mounting hardware
- available accessories: Pendant and borderless grille
Specifications:
- type: passive, full-range, two-way ceiling speaker
- frequency response: 110Hz – 18kHz ± 3dB, -10dB @ 85Hz
- drivers:
- LF woofer: 4” (105mm), polypropylene
- HF tweeter: 0.7” (20mm) silk dome
- nominal power: 15W (AES), 30W (peak)
- nominal impedance: 8Ω
- sensitivity (1W/1m): 86dB
- max SPL: 98dB (continuous) 101dB (peak)
- crossover: 3.5kHz passive
- recommended high-pass filter: 24dB/octave @ 85Hz
- transformer taps @ 70V: 8, 4, 2, 1, 0.5W
- transformer taps @ 100V: 8, 4, 2, 1W
- dispersion (-6dB): 150° conical
- back enclosure: zinc-coated steel
- protective grille: perforated steel with fabric backing
- fire class: UL94-V0, UL94-5VB
- connectors: 4-pin Euroblock with link output
- mounting: C-ring bracket
- dimensions (including grille): Ø 202mm x D 144mm
- cut-out diameter: 178mm
- weight: 2.2kg
