Martin Logan Dynamo 400 8" Powered Subwoofer Factory Refurbished
Dynamo 400 features a 150 Watt (peak) amplifier, 8-inch audiophile grade woofer, and RCA and speaker level input options. Dramatic bass detail and attack, superb extension, and room-shaking output ensure a compelling music and home theater experience.Dynamo 400 Product Highlights
LEFT AND RIGHT 2-CHANNEL INPUTS
Dynamo 400, 600X, 800X, 1100X, and 1600X subwoofers feature left and right input via RCA line level as well as speaker level connections.
LFE HOME THEATER INPUT
Dynamo 400 and 600X’s right inputs double as an LFE input for home theater applications. Dynamo 800X ups the ante by adding a discrete LFE RCA line level input. Dynamo 1100X and 1600X go one step further by adding both XLR and RCA inputs for LFE connection.
POWERFUL, HIGH-EXCURSION, LOW-TURBULENCE, INVERTED SURROUND WOOFERS
The latest generation of MartinLogan Dynamo subwoofers feature advanced-design woofers with inverted surrounds and powerful magnet, motor, and suspension designs. In front-fire mode the unique inverted surround design maximizes excursion clearance behind the grill cover. When positioned in a down-firing configuration, the inverted surround significantly reduces airflow related turbulence for an articulate and detailed low-frequency experience. These advanced-technology woofers pair a high-power magnet structure (significantly more robust than previous generations) with low-mass diaphragms to provide massive excursions while perfectly preserving the tiniest bass detail. The exceptional damping properties of the cone ensure a smooth, non-resonant response necessary for truly seamless blending with high-performance loudspeakers. Every element of Dynamo subwoofers has been meticulously designed to deliver a staggering low-frequency performance – all without a hint of distortion.
ADVANCED ULTRA-EFFICIENT SWITCH MODE POWER SUPPLIES AND CLASS-D AMPLIFIERS
Dynamo subwoofer class-D amplifiers operate with extremely low levels of distortion and deliver dynamic impact with plenty of overhead. Low- noise, high-power switching power supplies produce clean power efficiently in a small space and effortlessly provide tremendous levels of current. Both feature high-quality MOSFET transistors, transformers, noise-suppression networks, and control circuitry. The switching power supply combined with reliable class-D technology means there’s virtually no energy lost in the subwoofer system.
INVERSE MATHEMATICAL EQUALIZATION (IME) FILTER
The IME filter used in the Dynamo subwoofers is derived from the inverse of the unfiltered driver response. Precision IME filtering yields extremely accurate low-frequency response—superior to that provided by the simple second-order high-Q filters typically found in subwoofers in this price range.
LOW-TURBULANCE PORTS
When properly optimized and executed, ports are a convenient, cost- effective way to increase low-frequency output. Dynamo 400 and 600X feature tuned, long low-turbulence ports designed to provide superb low-end extension while minimizing port induced distortion.
Specs
Dynamo 400 SpecificationsFrequency Response
30–200 Hz ±3 dB. Anechoic in LFE mode.
Low Frequency Transducer
8” (20.3cm) high-excursion, inverted surround, polypropylene cone in a stamped steel basket with extended throw driver assembly. Ported.
Amplifier
75 Watts (150 peak)
Controls (Backplate)
Level: Min–Max
Low-Pass Filter: 35–120Hz, Bypass
Phase: 0°, 180°
Power Mode: On, Auto
Inputs (Audio)
Line Level: Left, Right/LFE
Speaker Level: Left and Right via banana jacks
Impedance
RCA: 8,300 Ohms
Speaker Level: 2,000 Ohms (red to black)
Power Draw
Typical: 20W, Max: 90W, Idle: 4W, Standby: 0.5W
Feet
Rubber
Weight
28.5 lbs. (12.9 kg)
Dimensions (HxWxD), Down-Firing
15.2" x 13.3 " x 13.7 "
(38.5 cm x 33.7cm x 34.8 cm)
Finish
Satin Black
Brand
Martin Logan
FAQ
What is your return policy?
Returns are accepted for products purchased within the last 30 days. You must call us to initiate a Return Authorization 800-820-6460.
You are responsible for return shipping costs.
Products MUST be in LIKE NEW Resalable condition.
You MUST have the ORIGINAL BOX and PACKAGING MATERIALS.
You MUST have all of the original accessories, manuals etc.
Your package should be INSURED for the FULL VALUE for your protection during return shipping.
Products that arrive not in original packaging, missing accessories, without a Return Authorization or damaged will be refused. Refunds are credited using the original payment method and they are usually credited within 10-15 business days upon receipt of your return.
Return & Exchange Limits
While we completely understand some products just don't fit the build or hit the mark we have a limit of 2 returns or exchanges per household in a 12 month period.
Order Cancellations
If your order has shipped, it cannot be cancelled. Once your order has left our warehouse it cannot be cancelled. If you would like to setup a return on this item please call us at 800-820-6460 and request a Return Authorization. Do not refuse your order as you will then be subject to shipping cost both ways.
If you wish to cancel an order placed during business hours, please contact us by phone by 3PM EDT on the same business day your order was placed. Any cancellation requests received after this time will be examined on a case-by-case basis. We offer no guarantee that your order will be able to be canceled after this time period. If your order is placed outside of business hours, you must contact us by 1PM EDT on the following business day. Again, cancellation requests submitted outside this time period are NOT guaranteed, and are examined case-by-case.
All shipping, processes and freight charges are non refundable.
Must receive a confirmation email from sales@safeandsoundhq.com to ensure your cancellation is complete
Orders placed cannot be cancelled by email. Please call us for order cancellations. Safe and Sound will not be responsible for lack of cancellation
Refused Shipments
Orders that are refused at the time of delivery are subject to the original and return shipping fees unless otherwise approved by Safe & Sound.
Return Policy Exclusions
Items marked as FINAL SALE, USED TRADE-IN are nonreturnable
Vehicle specific Car Audio/Video products such as wire harnesses, dash kits, interfaces and other installed components are nonreturnable once opened. Vinyl Albums are nonreturnableItems such as phono cartridges, record brushes, alignment tools and cleaners are nonreturnable Special order, non stocking items are nonreturnable
If you have any questions regarding our return and order cancellation policy, please feel free to contact us- 800-820-6460.
Is Shipping FREE?
We offer FREE Shipping on ALL orders over $99 with the following Exclusions:
Hawaii, Puerto Rico, Alaska shipments DO NOT qualify for Free Shipping. Prior to placing your order, please call us at 800-820-6460 to request a shipping quote to your address.
Where are you located?
We are located at 675 Fuller Road in Chicopee, Massachusetts 01020
Do you ship internationally?
We can only ship within the United States
Do you offer Repair Services?
We do not offer repair services currently
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