Depth i deploys the full array of MartinLogan's advanced subwoofer technologies to achieve deep, rich, satisfying bass while preserving electrostatic-like accuracy and detail. Its TriLinear™ BalancedForce™ alignment, advanced low-distortion switching amplifier, and sophisticated triple-servo control systems extract the very best possible performance from Depth i's high-resolution 8-inch aluminum-cone drivers.
TriLinear BalancedForce places the subwoofer's three drivers precisely 120 degrees apart from each other in the cabinet. Their reaction force vectors meet at the center and exactly cancel, virtually eliminating cabinet resonance and vibration. Gone with them are the cabinet-radiation coloration and bass blur that afflict even the best conventional subwoofers. The triple-servo system, meanwhile, ensures that the output from the drivers themselves – the output we want – is always an absolutely faithful replica of the audio input signal.
Depth i provides much of the performance of our flagship Descent i subwoofer from a cabinet 40% smaller. It blends easily into any high-performance stereo music or multi-channel home theater system. In fact, with its easily accessible top-mounted controls and separately configurable LFE and two-channel inputs, Depth i's performance can be independently optimized for home-theater and stereo operation in the same system.
Rigid, Low-Mass Aluminum-Cone Diaphragms
By eliminating cone flexure, even at long voice-coil excursions, low-mass yet extremely rigid aluminum diaphragms help our advanced-technology bass drivers achieve the very low distortion necessary for proper blending with MartinLogan electrostatic speakers.
TriLinear™ Driver Array
By operating three drivers in parallel, Depth i benefits from the low distortion and optimal control of their 8-inch diaphragms while achieving the displacement and acoustical output of a 15-inch drive unit. And because the thermal load is distributed over three voice coils instead of concentrated in one, the system is less influenced by to temperature-induced compression.
Comprehensive Inputs and Outputs with Simultaneous-Connection Option
Depth i provides a direct, unfiltered LFE input for connection to surround preamp/processors and receivers with built-in subwoofer crossovers as well as line- and speaker-level stereo inputs that connect to its internal crossover. The LFE and stereo inputs can be connected simultaneously with separate level and crossover settings for each, enabling precise optimization for home-theater and stereo music playback in the same system. For those who desire a multiple subwoofer setup, line-level outputs include a mono jack that carries the sum of all inputs. Further, stereo outputs pass a signal from the stereo inputs either directly or through switch-selectable high-pass filters.
Precision Low- and High-Pass Crossover Filters
Depth i offers six switch-selectable low-pass crossover frequencies between 30 and 80 Hz, implemented with filters precision-designed for optimum attenuation slope and minimum group delay. This ensures cohesive integration with smooth response through the crossover range with any type of main speaker. The similarly designed high-pass filters on the line-level outputs can be switched between 40- and 70-Hz settings or bypassed. An optional internal module will be available with low-pass filtering custom tailored to the MartinLogan CLX full-range electrostatic loudspeaker.
Extended-Range Master Level Control
Crave a little heavy-metal thunder from time to time? Ordinary level controls top out at '10'; ours goes to '11'!
Asymmetrically Configured Energy Transfer Coupler Spikes
Depth i is supplied with sturdy, 3/8-inch ETC™ spikes, which can be used in place of the standard feet to enhance stability on thick carpets or to create tighter coupling between subwoofer and floor. The spikes are arrayed asymmetrically in a configuration designed to minimize the chance of grille damage if the cabinet is tipped.
18?120 Hz ?3dB; Anechoic through LFE effects input
Low Pass Filter Frequency
30, 35, 45, 55, 65, 80Hz
High Pass Filter Frequency
Bypass, 40Hz, 70Hz
Low Frequency Transducer
Three 10" (25.4cm) high excursion, aluminum cone with extended throw drive assembly, sealed non-resonant asymmetrical chamber format
Three 250W (at less than 0.24% THD)
Three 700W (peak)
2100W (peak, system total)
Line level RCA: 20,000 Ohms. Compatible with 4, 6, or 8 Ohm rated amplifiers.
?10dB at 25Hz
?10dB at 50Hz
Left/Right RCA Line Level, RCA and XLR LFE, Speaker Level
Max: 750 Watts
Idle: 30 Watts
Standby: 10 Watts
105 lbs. (47.7 kg)
21.4" ? 20.5" ? 19.9"
(54.4cm ? 51.9cm ? 50.5cm)
Specifications are subject to change without notice.
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