LG GRABC.AUSAWBK vs MartinLogan Motion F20-WALNUT
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Choosing between the LG GRABC.AUSAWBK and MartinLogan Motion F20-WALNUT? Both compete in the Speaker (L/R) segment. Here’s how they compare across the specs that matter most for your home theater.
Looking at overall performance dimensions: The LG GRABC.AUSAWBK scores higher in value. The MartinLogan Motion F20-WALNUT leads in audio quality, volume/SPL, form factor, room fit.
Speaker performance depends on room acoustics, placement, and amplifier pairing. The specs below provide a starting point, but audition both in your space when possible.
The MartinLogan Motion F20-WALNUT holds an advantage across more performance dimensions, but the LG GRABC.AUSAWBK may still be the better pick depending on which specs matter most to your setup. See the detailed comparison table below for the full breakdown.
Performance Overview
Scores based on specs and category benchmarks (0–100 scale)
Detailed Specifications
| Specification | ||
|---|---|---|
| Price | $139.99 | N/A |
| Driver Config | — | 2.5-way |
| Sensitivity | — | 92dB |
| Impedance | — | 4Ω |
| Freq Response Low | — | 35Hz |
| Freq Response High | — | 25000Hz |
| Crossover | — | 230Hz |
| Bi-Amp Capable | — | Yes |
| Rec. Power Min | — | 20W |
| Rec. Power Max | — | 300W |
| Mounting Type | — | tower |
| Mounting Depth | — | — |
| Cutout Diameter | — | — |
| Cutout Width | — | — |
| Cutout Height | — | — |
| Wall Thickness Min | — | — |
| Wall Thickness Max | — | — |
| Back Box Included | — | No |
| Back Box Required | — | No |
| Mounting Mechanism | — | — |
| Installation Type | — | — |
| Stud Spacing | — | — |
| Paintable Grille | — | No |
| Magnetic Grille | — | No |
| Grille Shape | — | — |
| Connector Type | — | — |
| Wire Gauge Max | — | — |
| Angle Adjustable | — | No |
| Pivot Angle | — | — |
| Treble Attenuation Switch | — | No |
| LCR Capable | — | No |
| Coaxial | — | No |
| IP Rating | — | — |
| Moisture Resistant | — | No |
| UV Resistant | — | No |
| Salt Spray Rated | — | No |
| Enclosure Material | — | — |
| Grille Material | — | — |
| Bracket Type | — | — |
| Bracket Included | — | No |
| Dual Voice Coil (SDI) | — | No |
Key Differences
- Driver Config: LG GRABC.AUSAWBK at — vs MartinLogan Motion F20-WALNUT at 2.5-way
- Sensitivity: LG GRABC.AUSAWBK at — vs MartinLogan Motion F20-WALNUT at 92dB
- Impedance: LG GRABC.AUSAWBK at — vs MartinLogan Motion F20-WALNUT at 4Ω
- Freq Response Low: LG GRABC.AUSAWBK at — vs MartinLogan Motion F20-WALNUT at 35Hz
- Freq Response High: LG GRABC.AUSAWBK at — vs MartinLogan Motion F20-WALNUT at 25000Hz
See Where These Rank
Check our editorial rankings to see how LG GRABC.AUSAWBK and MartinLogan Motion F20-WALNUT compare to the rest of the field.
Best Speaker (L/R) Rankings
