Reserve R900 vs Signature Elite ES90
The Signature Elite ES90's sensitivity is 85 dB against the Reserve R900's 85.5 dB, its impedance 4Ω against 8Ω, and its low-frequency extension 52 Hz against 50 Hz. Both share ways (2).
AI-generated product photo — not official manufacturer imagery.
LoudspeakersAtmos Speakers
Estimated price (community-sourced)
$399 - $599
Around — community and catalog average, updates slowly
About the Reserve R900
The Polk Audio Reserve R900 is a premium height-module speaker designed for Dolby Atmos and DTS:X playback. It can be used either as a wall-mounted height speaker or placed on top of compatible Polk Reserve models, making it a flexible option for immersive home theater setups. Polk positions it as a timbre-matched companion for the Reserve series, with support for multidimensional audio formats including Dolby Atmos, DTS:X, DTS Virtual:X, and IMAX Enhanced. The R900 is sold as a pair of modules and is available in multiple finishes, including Midnight Black, White, and Brown.
Specifications
Transducer Specifications
Driver and acoustic performance characteristics
- Sensitivity
- 85.5 dB SPL @ 1W/1m
- Impedance
- 8Ω
- Frequency Response
- 50 Hz - 50 kHz
- Power Handling
- 100W
- Min. Amplifier Power
- 45W
- Max. Amplifier Power
- 100W
Speaker Design
Driver configuration and enclosure design
- Configuration
- 2-way
- Driver Type
- dynamic
- Driver Size
- 4"
- Driver Count
- 2
- Enclosure Type
- ported
- Crossover Frequency
- 2.1 kHz
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 165 × 158 × 320 mm (W × H × D)
- Weight
- 2.99 kg (7 lbs)
- Available Colors
- Black, White, Brown
Key Specifications
Sensitivity: 85.5 dB
Impedance: 8Ω
Frequency: 50-50000 Hz
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions