CSi A4 vs CS2
The CS2's sensitivity is 90 dB against the CSi A4's 89 dB and its high-frequency extension 24 kHz against 25 kHz. Both share impedance (8Ω) and ways (2).
AI-generated product photo — not official manufacturer imagery.
LoudspeakersCenter Channel SpeakersDiscontinued
Estimated price (community-sourced)
$100
Around — community and catalog average, updates slowly
About the CSi A4
The Polk Audio CSi A4 is a midsize center channel speaker featuring two 5.25-inch Dynamic Balance polymer composite cone woofers with rubber surrounds and a 1-inch Dynamic Balance silk/polymer dome tweeter, in a video-shielded bass-reflex enclosure with Polk's Acoustic Resonance Control porting to minimize cabinet resonances. The cabinet is built from acoustically inert MDF with real wood veneer finish, and the asymmetric reversible design allows flexible placement above or below a TV. Rated performance: total frequency response 55 Hz to 27,000 Hz (-3 dB: 65 Hz to 26,000 Hz), 89 dB sensitivity, 8-ohm nominal impedance, and 20 to 180 watts recommended. Dimensions: approximately 20 W x 6.875 H x 8.75 D inches, 15.5 lbs.
Specifications
Transducer Specifications
Driver and acoustic performance characteristics
- Sensitivity
- 89 dB SPL @ 1W/1m
- Impedance
- 8Ω
- Frequency Response
- 65 Hz - 25 kHz
- Power Handling
- 180W
- Min. Amplifier Power
- 20W
- Max. Amplifier Power
- 180W
Speaker Design
Driver configuration and enclosure design
- Configuration
- 2-way
- Driver Type
- dynamic
- Driver Size
- 5.25"
- Driver Count
- 3
- Enclosure Type
- ported
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 508 × 174.6 × 222.3 mm (W × H × D)
- Weight
- 7.03 kg (15 lbs)
- Available Colors
- Real wood veneer
Key Specifications
Sensitivity: 89 dB
Impedance: 8Ω
Frequency: 65-25000 Hz
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions