LSi-15 vs Mirage M-7si
The M-7si's impedance is 6Ω against the LSi-15's 4Ω, its sensitivity 84 dB against 88 dB, and its low-frequency extension 30 Hz against 22 Hz. Both share woofer (8").
AI-generated product photo — not official manufacturer imagery.
LoudspeakersFloorstanding SpeakersDiscontinued
Estimated price (community-sourced)
$450
Around — community and catalog average, updates slowly
About the LSi-15
The Polk Audio LSi15 is a premium floorstanding loudspeaker designed for audiophiles seeking exceptional sound quality in both stereo and home theater setups. It features a 1-inch Ring Radiator tweeter for crystal-clear highs, two 5.25-inch Dynamic Balance mid/bass drivers for accurate midrange, and an 8-inch side-firing woofer for deep, room-filling bass. The cabinet is elegantly finished in wood veneer and engineered to minimize resonance, ensuring clarity and detail across the frequency spectrum. The LSi15 is bi-amp capable and offers mirror-imaged pairs for precise imaging and a three-dimensional soundstage. Praised for outperforming many speakers at higher price points, the LSi15 is a discontinued model but remains highly regarded among enthusiasts.
Specifications
Transducer Specifications
Driver and acoustic performance characteristics
- Sensitivity
- 88 dB SPL @ 1W/1m
- Impedance
- 4Ω
- Frequency Response
- 22 Hz - 27 kHz
- Power Handling
- 250W
- Min. Amplifier Power
- 20W
- Max. Amplifier Power
- 250W
Speaker Design
Driver configuration and enclosure design
- Configuration
- 3-way
- Driver Type
- dynamic
- Driver Size
- 8"
- Driver Count
- 3
- Enclosure Type
- ported
- Crossover Frequency
- 2.4 kHz
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 244 × 1156 × 325 mm (W × H × D)
- Weight
- 14.6 kg (32 lbs)
- Available Colors
- Cherry, Black
Key Specifications
Sensitivity: 88 dB
Impedance: 4Ω
Frequency: 22-27000 Hz
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions