Martin Logan Dynamo 400 8" Powered Subwoofer

Brand: Martin Logan | SKU: Dynamo400 | UPC: 810123023394

1 review
Price
$499.99
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Martin Logan Dynamo 400 8" Powered Subwoofer Factory Refurbished - Safe and Sound HQ

Martin Logan Dynamo 400 8" Powered Subwoofer

Price
$499.99

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

  • 8-inch inverted surround poly cone woofer
  • 150 Watts (peak) amplifier
  • Low-turbulance, ported design
  • RCA and speaker level inputs


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.

Brand Martin Logan
Model Dynamo 400
Woofer Polypropylene
Woofer Size (inches) 8
Frequency Response (Hz) 30-200
Internal Powered Subwoofer Yes
Firing Direction Down
Subwoofer Enclosure Type Ported
Subwoofer Inputs LFE, Stereo RCA
App Control No
Wireless Enabled No
Room Correction No
Available Finishes Satin Black
Dimensions H x W x D (Inches) 15 1/8" x 13 5/16" x 15 1/4"
Weight (lbs) 28.5
Warranty 3 Years

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Price
$499.99
$769.95
$699.00
$700.00
Rating
1
Brand
Martin Logan
JBL
Polk Audio
Bowers & Wilkins
Model
Dynamo 400
L10CS
Signature Elite ES10
ASW608
Speaker Type
Powered Subwoofer
Powered Subwoofer
Powered Subwoofer
Frequency Response (Hz)
30-200
32-150
28-250
32-140
Firing Direction
Down
Down
Front
Front
Enclosure Type
Ported
Ported
Ported
Sealed
Amplifier Output RMS (Watts)
250 Watt RMS, 500 Peak
200
Inputs
LFE, Stereo RCA
RCA, LFE
LFE, Stereo RCA
LFE, Stereo RCA
Room Correction
No
No
No
No
App Control
No
No
No
No
Wireless Enabled
No
No
No
No
Available Finishes
Satin Black
Black
Black, White
Dimensions (HxWxD)
15 1/8" x 13 5/16" x 15 1/4"
15 3/8" x 13 1/4" x 16 1/4"
17 1/4" x 13 1/16" x 18 7/16"
10 11/16" x 10 1/14" x 13 3/4"
Weight (lbs)
28.5
31
39
19.5
Warranty
3 Years
5 Years Speaker, 1 year Amplifier
5 Years Speaker, 3 Years Amplifier
2 Years
Based on 292 reviews
93%
(272)
6%
(17)
1%
(3)
0%
(0)
0%
(0)

I just came back from visiting my big brother out of state who has a system in the mid 5 figure mark. When I came back I was inspired to upgrade but decided to wait. But then my Sub stopped working. I saw these on sale and thought “Is it meant to be?” Of course it was. I have these paired with a NAD T-778 streaming Qobuz. So far I am really enjoying these. I am hearing old songs as if they are new again. I have been listening to music more than ever. Bass is solid and highs are crisp. A truly immersive speaker. While I wouldn’t dare say they are as good as my big brother’s setup, they are close enough to put a smile on my face. I think they are a solid option for the price range. I am very satisfied and they are still breaking in.

Absolute game changer! Love the device - terrific sound quality, intuitive interface and beautiful design!

A
Yamaha A-S501 Stereo Integrated Amplifier with Built-in DAC Customer Return
Anonymous

My amplifier arrived safely and has functioned wonderfully without issue. Thank you!

Reference caliber exotic retro-futuristic LP spinner. Few rivals. Few are so flexible.

I started years ago with an Ortofon Blue and this directly replaced a Mofi Mastertracker. I have coupled the LVB250 with a Darlington MB8 phono preamp and I can finally say that I am satisfied. This cartridge is exceptional and I don't think I'll ever need anything better.

Really good service and extremely fast shipping. Also good price on receiver.

Love the power of it it really feels like the gate way into high end it sounds beautiful happy with your service.Everything was all I hoped it would be thank you

I bought the M2si integrated amplifier to drive my 2.7 magnepans. It does a very nice job of doing just that. That the amplifier is advertised as dipping gracefully or smoothly down to 2 Ohms was a primary point in the buy. Plus, Safe and Sound had a very good buy on this amplifier at $ 799.00. The build quality is very good and it has a large toroidal transformer to better handle high current and increase bass response. The preamp is full Class A and is a strong point for this Class A/B amplifier. Great buy! You can't have it all at this price though. The motorized volume knob does not have an easy viewing of where it is set as it is an inset indention without a light marker. Also, no standby power for the amp but it does have excellent heat management as the chassis has a colder side versus the hotter 2 channel amplifiers side. It is a fully discrete amplifier (wonderful, no integrated except for maybe op-amps at the preamp front). 5 year warranty, hard to beat. The amplifier has to be broken in as treble is at first very forward , but settles after a good break in period. The silver white looks very sexy and has a kind of older vibe. The M2si is British and has a brightness to it which can be toned down if you use the right speakers. Magnepans can change resistor values at the terminals or maybe even use specific DACs. No complaint about not having digital inputs at all since there are plenty of line level inputs as you can use outboards which gives you more opportunities any way. I have three different DACs into the line level inputs so all I have to do is switch out the single coax cable I want to change some of the response. I like a very well made Class A/B like this unit compared to the Class D which I have tried. Soundstage is wide and there is a lot of headroom compared to a lot of class D. If the M2si performs at 90% of what their end does like it has been said, then wow. Way to go Musical Fidelity.

I have all Arcam equipment, the sound is fantastic. The price was amazing.. MusicLife app is so/so. Great piece of equipment..

Safe and Sound is an excellent place to buy audio gear. This phono preamp is excellent, as sounds as advertised and the price was right!

Amazing to deal with and best service on the planet

So pleased with the quality as well as pretty much next day delivery. Great company

Excellent CD player. Very impressed with the quality of the open box service. Absolutely impeccable, couldn’t tell from a brand new unit. Your customer service is also tops. Thanks for great shopping experience!

A
Marantz PM7000N Integrated Stereo Amplifier with HEOS Built-in
Anonymous

Amazing sound. Perfectly pairs with the components I have. Vinyl has never sounded better.

Unit sounds great butyou can hear sound bleeding through the speakers and amp at zero volume. Also bind post so small myspade pugs either too large to accommodate. Unit turned off several times, not sure why possible connection but I could not figure out maybe due to heavy load speakers .Ssrvice and sales always fantastic!

Super quick shipment and communications! Always great experience with Safe and Sound! The T8 is amazing! Big improvement over DMP 6!

These outperform my previous speakers by a wide margin: more punch, more body, higher articulation. The vocals are mesmerizing.

I was trying to scale down from a surround to a stereo setup and looking to upgrade DAC from Marantz av8805a. I have the Anthem mca 525 gen 2 amps and Sonus Faber Sonetto iii g2. It took about 70+ to burn in. It was an upgrade, but it is very subtle and hard to even notice unless really paying attention. This does fell like within the territory of diminishing returns. I don't know if it's because of my speakers, but it is the best speaker I can get given the size and weight for a small walkup apartment. However, I still decided to keep it because it is much lighter and runs cooler than the Marantz. It is also a little bit clearer (the Marantz sounded a little bit muddied, which I didn't even notice after years of using until I was comparing it with m3ai) and I noticed that it sounded louder at the same db level because of this (this means I can listen at lower db levels than I would with Marantz). I do miss the ability to fully control the Marantz via the android app. Overall a good DAC, but subtracting a little bit of points for the high price.

I love it! I wish I would have bought one sooner!

So far very satisfied with the speakers. Box arrived damaged but speaker was ok. Definitely an improvement over my 40 year old cerwin Vegas.

I have found the Dynaudio Evoke series of speakers to be exactly what I have been looking for. They are on the "warm" side of the sound spectrum and have truly excellent fit and finish. I use them for both home theater and music.

Amazing AVR!! DIRAC ART is a game changer. If you want the full DIRAC suite Denon or Marantz are your only option outside of much much more expensive equipment from Storm. I have an 7.2.4 set up and decided to treat myself to this AVR over the Denon X6800H. This AVR is gorgeous, even better in person than the photos.

Great performance, beautiful menus, easy setup, both audyssey and Dirac options and support for just about every codec or processing need there is.