Watch a video review from one of our experts

Definitive Technology Mythos Nine

Multi-purpose home theater speaker

Item #: 735MYTH9

In Stock

Be the first to write a review | Ask Questions

Your price: $799.00 each Earn up to 799 Rewards points

Add to Cart Free Shipping Lifetime Tech Support

+ Add to wishlist + Email me alerts for this product

View all associated offers

Mount this versatile speaker next to your TV and enjoy rich sound

Definitive Technology's sleek Mythos Nine looks right at home next to today's flat-panel TVs. Its versatile design means you can use a pair for your home theater's main left and right speakers, or use one as a center channel. It features many of the same technologies found in Definitive's Mythos floor-standing speakers to provide a wide soundstage, pinpoint imaging, and superb realism in a slim, wall-mountable speaker cabinet. The Mythos Nine is sized to match up as a front left/right speaker with 50" or larger flat-panel TVs, or it works well as a center channel underneath a 42" or larger set.

Grille off shot

High-tech drivers for exceptionally detailed sound

Tweeter

At the center of the cabinet are two 4-1/2" midrange drivers surrounding a 1" dome tweeter. Definitive's Balanced Dual Surround System (BDSS) driver technology helps increase the tiny speakers' output without increasing the size of the enclosure. The pure aluminum dome tweeter produces extended highs that reveal nuance and shimmer without a trace of edginess. Flanking the midranges are two 4-1/2" x 8" racetrack-shaped low bass radiators, which give the Mythos Nine better bass performance than you might expect from a slim, on-wall speaker. Die-cast aluminum baskets, a resonance-free PolyStone baffle, and proprietary damping technologies built into the cabinet ensure clean sound.


Gorgeous aircraft-grade aluminum cabinet

The enclosure is made of black hand-polished aluminum for a sleek look that'll go well with most modern décors. The Mythos Nine comes with a wall-mounting bracket that will adapt to most swing out, arm-style TV wall mounts, so the speaker moves along with your TV when you reposition it.

Building a system

Put together a complete home theater system using Mythos on-wall speakers for your front three channels. Add on Definitive's Mythos Gem surround speakers for wraparound sound and SuperCube III subwoofer for high-impact bass. The Mythos Nine also makes a great center channel complement to Definitive's powerful Mythos STS SuperTower floor-standing speakers.


Speaker call out

Got wire?

Most speakers don't include any. Learn about choosing and installing speaker wire at the Crutchfield Learning Center.
Shop our selection of speaker wire.

Did you know?
Your new speakers will probably sound better after several weeks of use than they do right out of the box. That's because the material surrounding the woofers will loosen up, allowing the drivers to move more fully. Definitive Technology estimates a break-in period of 24 to 48 hours of playback before the speakers will deliver optimum sound quality. For more information and helpful tips, check out this article from Definitive's website about conditioning your speakers.


Product Highlights:

  • frequency response 38-30,000 Hz
  • sensitivity 90 dB
  • 8-ohm impedance
  • handles up to 250 watts
  • one 1" pure aluminum dome tweeter
  • two 4-1/2" BDSS bass/midrange drivers
  • two 4-1/2" x 8" pressure coupled bass radiators
  • one pair of 5-way binding posts
  • aircraft-grade extruded aluminum cabinet
  • gloss black finish
  • includes wall-mounting bracket and leveler foot
  • 28-1/16"W x 5-7/16"H x 4-15/16"D
  • warranty: 5 years
  • Our 60-day money-back guarantee

Hands-on research

What's in the box?

Download owner's manual

  • Black table-top/wall-mount loudspeaker (with removable cloth grille)
  • Wall-mount bracket
  • Threaded rubber-foot
  • Foot bracket
  • 2 Mounting bolts
  • Machine screw
  • 2 Self-adhesive rubber-bumpers
  • Logo badge
  • Owner's Manual
  • Online Product Registration card
  • Mounting template

Product Research

Overview: The Definitive Technology Mythos Nine loudspeaker offers maximum versatility for your home theater and flat-panel entertainment system; it can be used as an on-wall Front, Center, or Surround speaker, or as a shelf-mounted center speaker. The Mythos Nine features a high-gloss aircraft-grade extruded aluminum enclosure with proprietary damping technologies to ensure total rigidity and perfectly accurate sound. It also features two high-definition BDSS 4-1/2 inch drivers pressure-coupled to two 4-1/2 x 8-inch (racetrack-shaped) planar low-bass radiators, and a 1 inch (25mm) ceramic-coated pure aluminum dome tweeter with an acoustically contoured faceplate for excellent high frequency extension, detail and smoothness.

Driver Technology
Enclosure Design
Connections
Mounting Options

Driver Technology

Pressure Coupled Radiator Design: The Mythos Nine contains two high-definition Balanced Dual Surround System (BDSS) 4-1/2" drivers (patent pending) that are pressure-coupled to two 4-1/2" x 8" racetrack-shaped planar low-bass radiators for deep bass extension. The bass roll-off of the Mythos Nine is smooth and controlled, allowing it to seamlessly blend with a powered subwoofer, such as Definitive's SuperCubes, for audiophile-grade home theater power and precision.

BDSS Technology: Definitive Technology's Balanced Double Surround System (BDSS) driver offers a wide-bandwidth accurate frequency response, broad dispersion, low distortion, and detail retrieval; so you hear more the music with greater accuracy and enjoyment. BDSS drivers incorporate the following design features.

  • Balanced Double Surrounds: The speaker's balanced double surrounds support the cone at two points to provide better mechanical stability for longer, more linear excursion, and improved damping to suppress parasitic cone resonance.
  • Mineral-Filled Polymer Cone: The loudspeaker features a deeply drawn mineral-filled polymer cone engineered using sophisticated 3D modeling techniques for wide range performance.
  • Waveguide: The cone's integrated waveguide smoothes off-axis response for broad, even dispersion and better imaging.
  • High Temperature Voice Coil: The driver's high temperature, oversized, lightweight vented voice coil offers improved power handling and quick transient response. The voice coil is also lengthened to increase linearity and lower distortion.
  • Magnet Structure: The driver's magnetic system is optimized by finite element analysis to maximize magnetic flux in the gap for high efficiency and linear excursion.
  • Die-Cast Alloy Basket: The die-cast alloy basket minimizes ringing and vibration while the open area minimizes back wave reflection.

Drivers: The two active 4-1/2" drivers surround a pure aluminum dome tweeter. The tweeter incorporates a newly designed voice coil, dome, and surround, as well as an acoustically contoured faceplate for unequaled high-frequency extension, detail, and smoothness.

Break-In Period: The Mythos Nine will sound good right out of the box; however, an extended break-in period of 20-40 hours or more of playing is required to reach full performance capability. The break-in period allows the suspensions to work in and results in full bass, a more open midrange, and smoother high frequency reproduction.

Enclosure Design

Extruded Aluminum Enclosure: The Mythos Nine enclosure is hand-polished gloss-black aircraft-grade extruded aluminum with proprietary damping technologies that ensure total rigidity. All components are mounted on a resonance-free PolyStone baffle. These construction technologies along with state-of-the-art drivers and tweeter serve to deliver high-quality sound with a wide soundstage, pinpoint imaging, high dynamic impact, and superb realism.

Connections

Binding Posts: The Mythos Nine is equipped with a pair of gold-plated, 5-way binding posts to attach your receiver's speaker wire.

Mounting Options

Mounting: The Mythos Nine comes with easy-to-install mounting hardware that allows you to hang the speaker on the wall below, above, or beside your flat-panel television in a vertical or horizontal orientation. Using the included mounting bracket, the Mythos Nine is engineered to be placed flush with the wall and close to the edge of your television while delivering realistic sound that is accurate, with lifelike imaging and clarity. The Mythos Nine also allows direct mounting to a flat-panel TV swing out arm-style wall-mount so that the speaker angle changes with the TV angle. A supplied adjustable foot and two self-adhesive rubber feet permit easy shelf mounting when the speaker is used in the horizontal center-channel format.

Angle Adjustment: The Mythos Nine has a bracket with foot which screws into the speaker's wall-bracket to stabilize the speaker and allows you to adjust the vertical angle when the system is placed on a flat horizontal surface. When you set the speaker down, the speaker will lean back and rest on this foot. By varying how far you screw in-and-out the foot, you can adjust the vertical angle of the speaker. It is recommended that you aim the center-speaker so that it aims directly towards the height of the listeners' ears.

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Be the first to review this product
Great Gear Giveaway

Submit a review and then enter to win a $500 rewards card

Review this product:

Thanks for taking the time to share your experiences about this product. Please be sure to focus your comments on the product itself. Read our Review Guidelines for more information.

Your email won't be visible. Please use the email address that is associated with your order.
(e.g., JohnD) Your review will be signed using the display name and location
(e.g., Charlottesville, VA)

Click on a star to rate the overall product on a scale of 1-5
1500 characters left
  Attach a YouTube Review
Crutchfield Video Review Guidelines
  • Only submit videos that you made or are authorized to use.
  • Do not submit videos that contain music, video or visuals that are copyrighted and belong to someone else.
  • Please see our Review Guidelines for more information.
500 characters left
500 characters left

Product reviews from the Crutchfield Labs

Definitive's Mythos speakers offer audiophile performance in a sleek, stylish package. Learn about what makes these speakers different in this short overview.

What are the Labs?

Get everything you’ll need to enjoy your new Definitive Technology Mythos Nine

You'll need speaker wire to get the audio signal from your receiver to your speakers. Most speakers don't include any speaker wire.
Get floor stands to keep your speakers attractively and safely at the right level.
Complete your home theater speaker system with these voice-matched speakers.
You'll need speaker wire to get the audio signal from your receiver to your speakers.
A powered sub fills in the low end making movies and music sound that much better.
Have your new speakers installed by qualified professionals.
Monster Cable SuperFlat™ Mini

Monster Cable SuperFlat™ Mini

Decor-friendly speaker cable with gold pin connectors (50-foot spool)

Item #: 119SFLM50

(26)

$34.95
Add to Cart
AudioQuest Type 4

AudioQuest Type 4

Single center speaker cable with pre-attached banana connectors (10 feet)

Item #: 703T410CTR

(8)

$124.49
Add to Cart
Sanus NFC18

Sanus NFC18

Single 18" center channel speaker stand (Black)

Item #: 051NFC18B

(3)

$99.99
Add to Cart
Definitive Technology Mythos Gem XL

Definitive Technology Mythos Gem XL

Single multi-purpose home theater speaker

Item #: 735MYGEMXL

(1)

$349.00
Add to Cart
Definitive Technology XTR®-20BP

Definitive Technology XTR®-20BP

Ultra-thin bi-polar surround speaker

Item #: 735XTR20BP

(1)

$279.00
Add to Cart
AudioQuest X2 Speaker Cable

AudioQuest X2 Speaker Cable

14-gauge cable, connectors optional (30 feet, Gray)

Item #: 703X230G

(27)

$58.99
Add to Cart
AudioQuest G2 Speaker Cable

AudioQuest G2 Speaker Cable

16-gauge cable, connectors optional (30 feet, Gray)

Item #: 703G230G

(19)

$38.99
Add to Cart
Monster XPHP™ MKII

Monster XPHP™ MKII

Speaker cable with clear jacket (100 feet)

Item #: 119XPHP100

(10)

$99.95
Add to Cart
Monster XP®

Monster XP®

Speaker cable with clear jacket, connectors optional (100 feet)

Item #: 119XPMS1H

(52)

$64.95
Add to Cart
Monster XP® Navajo White MkII

Monster XP® Navajo White MkII

Speaker cable (50 feet)

Item #: 119XPNWS50

(2)

$39.95
Add to Cart
Definitive Technology ProSub 1000

Definitive Technology ProSub 1000

Powered subwoofer

Item #: 735PSUB1KB

(51)

$499.00
Add to Cart
Definitive Technology ProSub 800

Definitive Technology ProSub 800

Powered subwoofer (Black)

Item #: 735PSUB8B

(31)

$399.00
Add to Cart
Definitive Technology SuperCube 2000

Definitive Technology SuperCube 2000

Ultra-compact powered subwoofer for home theater

Item #: 735SC2000

(9)

$499.00
After $100.00 Instant Rebate Add to Cart

Questions & Answers Ask the community. Share your knowledge.

Looking for more? Check out the next model in this lineup.

Definitive Mythos Ten Each

Definitive's top-of-the-line on-wall model

The Definitive Technology Mythos Ten offers these features:

  • features two 5-1/4" BDSS bass/midrange drivers pressure coupled to two 5" x 8" bass radiators
  • reproduces frequencies down to 31 Hz
  • handles up to 300 watts