Depth i vs Bag End Infra-18
The Infra-18's power @ 8ω is 400W against the Depth i's 350W, its high-frequency extension 95 Hz against 120 Hz, and its low-frequency extension 8 Hz against 20 Hz. Both share impedance (8Ω).
AI-generated product photo — not official manufacturer imagery.
LoudspeakersSubwoofersDiscontinued
About the Depth i
The MartinLogan Depth i is a high-performance powered subwoofer featuring innovative BalancedForce TriLinear technology with three 8-inch (20.3 cm) high-excursion aluminum cone drivers arranged 120 degrees apart to eliminate cabinet resonance and deliver tight, accurate bass with electrostatic-like detail. Designed for both high-end stereo and home theater, it uses sophisticated servo-control and a 350W amplifier for low distortion and purity. It is compact (40% smaller than the Descent i) yet extends to 20 Hz, blending seamlessly with electrostatic or cone speakers. Controls include ±10 dB level at 25 Hz, low-pass filter (30-80 Hz), high-pass filter (bypass/40/70 Hz), phase, and auto/standby power. Inputs: left/right RCA line level, RCA LFE, speaker level. Discontinued model with price listed as when discontinued.
Specifications
Transducer Specifications
Driver and acoustic performance characteristics
- Impedance
- 8Ω
- Frequency Response
- 20 Hz - 120 Hz
- Power Handling
- 350W
Power Specifications
Amplification power output and characteristics
- Power @ 8Ω
- 350W @ 8Ω
Speaker Design
Driver configuration and enclosure design
- Driver Size
- 8"
- Driver Count
- 3
- Enclosure Type
- sealed
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 455 × 434 × 419 mm (W × H × D)
- Weight
- 31.8 kg (70 lbs)
Key Specifications
Impedance: 8Ω
Power: 350W
Frequency: 20-120 Hz
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions