LSi-25 vs Acoustic Energy AE109²
The AE109²'s sensitivity is 89 dB against the LSi-25's 88 dB, its impedance 6Ω against 4Ω, and its low-frequency extension 41 Hz against 30 Hz. Both share high-frequency extension (26 kHz).
AI-generated product photo — not official manufacturer imagery.
LoudspeakersFloorstanding SpeakersPowered LoudspeakersDiscontinued
Estimated price (community-sourced)
$750
Around — community and catalog average, updates slowly
About the LSi-25
The Polk Audio LSi25 is a 3-way powered floorstanding loudspeaker with a built-in 150-watt amplifier driving a 10-inch Dynamic Balance powered subwoofer in each tower. It uses a 1-inch Vifa ring-radiator tweeter and two 5.25-inch aerated polypropylene midrange drivers in a vented enclosure with 4-ohm nominal impedance, 88 dB sensitivity, and a frequency response of 20 Hz to 27 kHz overall. The cabinet features real wood veneer in cherry finish and includes bi-amp/bi-wire capable inputs.
Specifications
Transducer Specifications
Driver and acoustic performance characteristics
- Sensitivity
- 88 dB SPL @ 1W/1m
- Impedance
- 4Ω
- Frequency Response
- 30 Hz - 26 kHz
- Power Handling
- 300W
- Min. Amplifier Power
- 20W
- Max. Amplifier Power
- 300W
Power Specifications
Amplification power output and characteristics
- Power @ 4Ω
- 300W @ 4Ω
Speaker Design
Driver configuration and enclosure design
- Driver Size
- 10"
- Driver Count
- 3
- Enclosure Type
- ported
Connectivity
Input and output connections
- Analog Inputs
- bi-amp inputs
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 21.91 × 126.36 × 43.18 mm (W × H × D)
Key Specifications
Sensitivity: 88 dB
Impedance: 4Ω
Frequency: 30-26000 Hz
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions