The Motion Foundation B1 is the standmount that brings MartinLogan's folded tweeter into a price most systems can reach. That transducer is the reason to look at this speaker rather than a conventional dome design.
Folded Motion works by pleating a thin diaphragm and squeezing air out from between the folds instead of pushing it forward. Moving mass drops sharply, and treble arrives with a speed that domes struggle to match at any price.
An aluminium mid-bass cone carries everything below the crossover, and the handover sits high, which keeps voices on a single driver through most of their range instead of splitting them.
Sensitivity is generous and the load is mild, so a modest integrated amplifier drives it properly. It suits a smaller room, or the rear channels of a system whose front speakers already share this tweeter.
MartinLogan Motion Foundation B1 official product page
| ITEM | DESCRIPTION |
|---|---|
| Folded Motion tweeter | A pleated diaphragm with far less moving mass than a dome. |
| Aluminium mid-bass cone | A stiff cone carrying the whole vocal band below the crossover. |
| High crossover point | Voices stay on one driver instead of being split across two. |
| Generous sensitivity | Drives properly from a modest integrated amplifier. |
| Range tweeter match | Shares its treble character with the floorstanders above it. |
| DETAIL | VALUE |
|---|---|
| Driver complement | 1 x 0.94" x 1" (2.4 x 2.5cm) Gen2 Folded Motion Tweeter S, 1 x 5.5" (14cm) aluminium cone mid-bass driver |
| Frequency response | 48 Hz - 23 kHz ± 3 dB |
| Sensitivity | 89 dB |
| Nominal impedance | 5 ohms |
| Recommended amplifier power | 15 - 100 watts |
| Crossover frequency | 3,400 Hz (2-way) |
| Dimensions | 34.6cm x 18.4cm x 24.05cm (13-11/16" x 7-1/4" x 9-1/2") |
| Weight | 5.2 kg each |
| ITEM | QUANTITY |
|---|---|
| Motion Foundation B1 loudspeaker | Pair |
MartinLogan Motion Foundation C1 is a wide centre-channel speaker designed to keep dialogue stable across a multi-seat cinema. The C1's Satin White cabinet gives the speaker a lighter visual presence while the black baffle keeps attention on the drivers.
Two 5.5-inch aluminium drivers flank the Folded Motion tweeter in a 2.5-way arrangement. The crossover rolls the outer driver away earlier than the inner one, a useful approach for controlling horizontal interference without giving up the output of a dual-woofer centre.
Place the C1 as close to the screen as the furniture allows and aim its baffle toward seated ear height. Its rear ports need ventilation, so a fully closed cabinet is not the right home unless the joinery has been designed around the speaker.
For official details on M/Logan Foundation C1 (SatinWhite), view the MartinLogan Motion Foundation C1 product page.
| ITEM | DESCRIPTION |
| Screen-focused dialogue | The C1 fixes voices to the picture instead of asking the left and right speakers to create a phantom centre. |
| Two-and-a-half-way network | Staggered crossover points help the broad cabinet retain more even horizontal coverage. |
| Folded Motion clarity | The compact pleated tweeter keeps speech edges and soundtrack detail clean. |
| Matching Foundation voicing | Driver materials and waveguide geometry suit a cinema built around F1, F2, B1 or B2 models. |
| DETAIL | VALUE |
| Frequency response | 53 Hz to 23 kHz, +/-3 dB |
| Sensitivity | 91 dB at 2.83 V per metre |
| Nominal impedance | 4 ohms |
| Recommended amplifier power | 15 to 100 W |
| Crossover frequencies | 2.9 kHz and 3.2 kHz |
| High-frequency driver | Gen2 Obsidian Folded Motion S tweeter |
| Bass and mid drivers | 2 × 5.5 inch aluminium cones |
| Enclosure alignment | Rear-ported bass reflex |
| Dimensions | 20.3 × 61 × 36.8 cm |
| Weight | 18 lb, as listed by the manufacturer |
| Sold as | Single speaker |
The Motion Foundation F1 is a genuinely slim floorstander, which is the point of it. Three small bass cones stacked vertically move as much air as one large driver while keeping the cabinet narrow enough to disappear against a wall.
Splitting bass across three drivers has a second benefit beyond width. Each cone travels less for the same output, so distortion stays low where a single hard-working driver would begin to compress.
A dedicated midrange cone sits above them, freed entirely from low-frequency duty, and the folded tweeter handles everything above. Voices come through a driver doing only one job.
Sensitivity is high for a four ohm design and the cabinet is manageable for one person to position. It fits a living room that wants full-range sound without a pair of wide towers in the corners.
MartinLogan Motion Foundation F1 official product page
| ITEM | DESCRIPTION |
|---|---|
| Triple bass array | Three small cones move the air of one large driver in a narrow cabinet. |
| Low excursion per driver | Each cone travels less, keeping distortion down at level. |
| Dedicated midrange driver | Voices arrive from a cone doing nothing else. |
| Folded Motion tweeter | The same low-mass pleated diaphragm used across the range. |
| Slim floorstanding footprint | Full-range output without a wide tower in the corner. |
| DETAIL | VALUE |
|---|---|
| Driver complement | 1 x 0.94" x 1" Gen2 Folded Motion Tweeter S, 1 x 5.5" (14cm) aluminium cone midrange, 3 x 5.5" (14cm) aluminium cone bass drivers |
| Frequency response | 41 Hz - 23 kHz ± 3 dB |
| Sensitivity | 92 dB |
| Nominal impedance | 4 ohms |
| Recommended amplifier power | 15 - 200 watts |
| Crossover frequency | 240 Hz, 2,700 Hz (3-way) |
| Dimensions | 105.2cm x 21cm x 36.7cm (41-7/16" x 8-3/8" x 14-7/16") |
| Weight | 21.1 kg each |
| ITEM | QUANTITY |
|---|---|
| Motion Foundation F1 loudspeaker | Pair |
The Dynamo Foundation 10 is the straightforward way to add low-distortion bass to a living room, music room or home cinema. Its down-firing design and clean, grille-less appearance allow it to blend into the décor while the soundtrack gains the weight it was missing.
A custom Ultra-Rigid Polypropylene woofer is tuned using Klippel analysis for high output and controlled movement. MartinLogan adds a high-speed DSP engine with high-resolution processing, giving the subwoofer useful precision in a value-focused package.
LFE and stereo RCA inputs make it easy to connect to an AV receiver, preamp or other audio equipment. The Foundation 10 is also voiced to complement Motion Foundation systems while remaining useful with other brands.
For current specifications and product support, visit the Martin Logan MartinLogan Dynamo Foundation 10 Subwoofer product page.
| ITEM | DESCRIPTION |
| Main Features | |
| URP woofer | The Ultra-Rigid Polypropylene bass driver is tuned for high output and low distortion. |
| High-resolution DSP engine | High-resolution processing helps the subwoofer manage output and preserve a clean low-frequency presentation. |
| Down-firing subwoofer design | The driver fires toward the floor, leaving the cabinet with a clean, grille-less visual profile. |
| LFE and stereo RCA inputs | The connection panel supports simple home cinema and flexible stereo integration. |
| Motion Foundation system compatibility | The subwoofer is designed to pair naturally with MartinLogan Motion Foundation loudspeakers. |
| DETAIL | VALUE |
| Technical Specifications | |
| Frequency response | 25-200 Hz ±3 dB (Anechoic via LFE input) |
| Weight | 23.8 lbs. (10.8 kg) |
| Available finishes | Black |
| Sold as | Each |
| Driver complement | 10 in high-excursion Ultra-Rigid Polypropylene (URP) cone in stamped steel basket |
| Amplifier | Magnitude MT-400, 400 W peak (200 W continuous) |
| Dimensions | 13 in x 12.75 in x 12.75 in (33 cm x 31.3 cm x 31.3 cm) |
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