The Optimal Audio Up 4 is a 4-inch two-way ceiling speaker with integrated backcan, delivering higher fidelity than single-driver models thanks to its dedicated 0.7-inch silk dome tweeter. Rated at 25W on 100V line, it suits mid-sized commercial spaces — bars, restaurants, retail and corporate environments — where music quality matters as much as speech clarity.
LF Driver
4″ (105mm)
Low frequency
HF Driver
0.7″ (20mm)
Silk dome tweeter
Power Handling
25W
100V line
Coverage
120°
Conical
Features
✓
Two-way design with dedicated silk dome tweeter for improved HF detail
Two-way design with dedicated silk dome tweeter for improved HF detail
✓
4-inch (105mm) LF driver for solid mid and low-frequency reproduction
4-inch (105mm) LF driver for solid mid and low-frequency reproduction
✓
Integrated steel backcan for fire rating compliance and acoustic isolation
Integrated steel backcan for fire rating compliance and acoustic isolation
✓
120° conical coverage for consistent listening across the coverage area
120° conical coverage for consistent listening across the coverage area
✓
70V and 100V transformer taps plus low-impedance operation
70V and 100V transformer taps plus low-impedance operation
✓
25W power handling for higher SPL in larger spaces
25W power handling for higher SPL in larger spaces
✓
White steel grille for a clean, unobtrusive aesthetic
White steel grille for a clean, unobtrusive aesthetic
Specifications
| Model | Up 4 |
| SKU | UP4-W |
| Type | Two-way passive ceiling speaker |
| LF Driver | 4″ (105mm) |
| HF Driver | 0.7″ (20mm) silk dome tweeter |
| Power Handling | 25W |
| Line Voltage | 70V / 100V + Low-Z |
| Coverage | 120° conical |
| Backcan | Integrated steel |
