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Boston Acoustics Horizon Series MCS100MDNT 5.1-Channel Speaker System (Black) (Discontinued by Manufacturer)

43 customer reviews

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  • One box, 5.1-channel speaker system
  • Four 3" satellite speakers with .75" soft dome tweeters
  • 3" center channel speaker with .75" soft dome tweeter
  • 8" 100-Watt powered subwoofer
  • All speakers feature MagnaGuard magnetic shielding
This item’s packaging will indicate what is inside and cannot be hidden.
Currently unavailable. We don't know when or if this item will be back in stock.

Product Specifications

Brand NameBoston Acoustics
Output Wattage100 watts
Color NameMidnight
Special Features5.1 sub / sat system

Technical Details

  • 5.1 sub / sat system

Product Description

Product Description

Small enough to hang on a wall, but powerful enough to bring down the house, the new Boston Acoustics Horizon MCS100 5.1-Channel Speaker System takes all the complexity out of multi-channel audio without sacrificing any of its impact. With four 3" matched satellite speakers, a 3" center channel speaker and an 8" 100-Watt powered subwoofer, you can let Hollywood pile on the excitement. It¿s all in a day¿s work for the Horizon MCS100.

From the Manufacturer

From the Manufacturer

Horizon MCS 100 5.1-Channel Speaker System Takes the Complexity Out of Home Theater

With the same Deep Channel® Design (DCD) woofers and soft-dome tweeters found in all Boston Acoustics Horizon speakers, this MCS 100 speaker system is an ideal solution for getting great sound in any room. The satellites are equipped with 3-inch mid bass driver and .75-inch soft dome tweeter as well as Reduced Baffle Diffraction Design (RBDD) for wider, smoother sound dispersion. Add the included 8", 100-watt powered subwoofer and you've got a system that's music to your ears.

Racetrack-shaped rear ports, adjustable footing, and integrated
mounting keyholes make these speakers attractive for any space (shown here in black)

Technology is Key

All Horizon speakers share certain key technologies. They all use 1-inch Kortec® soft dome tweeters, for smooth, extended high frequency response out to 25kHz. The woofers feature Deep Channel® Design, or DCD, providing increased bass output without the risk of bottoming out. The woofers all have phase plugs for smoother midrange response and increased power handling. With Horizon, Boston introduces RBDD which stands for Reduced Baffle Diffraction Design. The result is wider and smoother dispersion and more life-like sound. Please click on the hyperlink to learn more. Finally, these models feature MagnaGuard® video shielding, making them safe for use near any type of display.

Features to Please

All Horizon speakers share certain key features. They all have a racetrack shaped, rear port that is flared on both ends. The shape helps reduce the footprint of the port, taking up less room on the back of the speaker. The combination of the flared opening on both ends of the port tube and its rear location virtually eliminates chuffing, or audible port noise. They all have 5-way binding posts to accommodate the use of any thickness of speaker wire or style of termination. They all come with an adjustable footing, allowing them to sit securely on a flat surface either vertically or horizontally and to be angled toward the listening position. They all have an integrated keyhole for quick and easy wall mounting. The keyhole and standoffs on the back of the speaker keep it far enough off the wall to not block the port, maintaining the sound quality that the Boston engineers intended they have. They all feature a soft-touch finish, giving them an elegant high-end appearance and terrific feel.

Sized to Surprise

With many of the same technologies that drive Boston Acoustics' most powerful speakers, this compact speaker system is sized to surprise.

Technical Specifications

  • Recommended Amplifier Power: 10-150 watts
  • Satellite Nominal Impedance: 8 ohms
  • Satellite Frequency Response: 120Hz-20kHz
  • Crossover Frequency: 3000Hz
  • Satellite Dimensions (HxWxD): 7.38 x 4.38 x 4.69 inches
  • Sensitivity (1 watt (2.83v) at 1m): 88dB
  • Satellite Tweeter: .75-inch Kortec Soft Dome
  • Satellite Bass Unit: Dual 3-inch copolymer DCD with Phase Plugs and MagnaGuard
  • Subwoofer Cone Diameter: 8 inches
  • Subwwofer Power: 100 watts
  • Weight: 2.5 lbs

Product Details

  • Product Dimensions: 20.8 x 19.4 x 19.4 inches ; 20 pounds
  • Shipping Weight: 46.5 pounds
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item is not eligible for international shipping. Learn More
  • ASIN: B000W9DO7U
  • Item model number: MCS100 System Midnight
  • Average Customer Review: 3.5 out of 5 stars  See all reviews (43 customer reviews)
  • Amazon Best Sellers Rank: #194,661 in Electronics (See Top 100 in Electronics)
  • Product Warranty: For warranty information about this product, please click here
  • Date first available at November 15, 2005
  •  Would you like to update product info, give feedback on images, or tell us about a lower price?

Customer Reviews

Most Helpful Customer Reviews

The Boston Acoustics Horizon Series MCS100 5.1-Channel Speaker System is a good quality, well constructed set. But these speakers may be undersized for many home theaters. I happened upon the Horizon MCS set as I was helping somebody just starting their home theatre. They had already purchased a Yamaha receiver with high power output. Along with the high price, that was my main reason for advising other alternatives. Ultimately, after testing this set out with them they returned it in favor of another. You should do your research to make sure your speakers fit your space and other components.


In terms of durability, the speaker cases are really pretty good. The body style is not one of my favorites, but many will find them attractive and nondescript. The case construction is solid. The connectors and binding posts make nice strong connections. The sound clarity is also nice and responsive. So there are some positives.


While the bass response of this set may be adequate for some, bass-heads will not be satisfied. The overall output is only enough for smaller spaces and starter AV systems. More disappointing to me is the performance of the center channel and satellites. Even if you have a receiver that will allow you to add speakers and grow it to a 7.1 setup, it's easier to scale up when your satellites are adequately sized. These speakers do not have enough amplitude to fill most living rooms.


1. The list price of this set is excessive for what you get. BA is a good brand and this is a nice starter set, but this is a premium price.
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22 of 24 people found the following review helpful By Mr. on February 21, 2008
Verified Purchase
Purchased the MCS100 system and it made a night and day difference for my First attempt at a Home Theater System. My system consists of an Onkyo 705 and a 50 inch Panasonic Plasma. Needless to say I am a happy camper. I auditioned these speakers at a local Circuit City, and compared them against the MCS130 and a $1,400 KEF system. I have to say that the MCS130 sounded more much fuller, but not the $300 MSRP difference fuller, and definitely no the $900 MSRP difference the KEF was. As far as the fuller difference when compared with the MCS130, it was not much of a concern to me, because I intend to use the MCS100 as mainly the surrounds for a 7.1 system. I am going to use a Boston Acoustics HS225 for the center speaker and 2 HS450 for front main speakers. I would have to say, do not hesitate on the purchase of a MCS100 speaker system for a decent 5.1 system. Well worth the money, and considering I got it for about $350, with a saving of $150, I say buy it.
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19 of 22 people found the following review helpful By Martin A Hogan HALL OF FAMETOP 500 REVIEWER on November 25, 2008
With a 5.1 receiver system, this speaker system is one of the best, especially for the price. Each of the speakers contains a 3" mid-range speaker and a ¾" tweeter giving a superb well rounded sound that many speakers don't have. The 100-watt heavy-duty subwoofer rounds out the sound to give you a truly theatrical sound experience. You can install these on your walls using the mounting keyholes, place them on a flat surface or put them on a stand. There is an integrated port in each speaker that is designed to ensure the balance of air-flow for a great sound. This system truly gives you that specific speaker surround sound exactly like what you can hear in your local movie theater.

Prices for surround sound have always been high until now. Boston Acoustics has a great reputation for quality and there is no reason to settle for simple stereo when you can have a completely encompassing sound experience with a powerful bass (subwoofer) that makes you feel like you are in the movie. If you are into SACD, DSD, dts or surround sound music, you will hear the music as if you were at that concert or in the studio when it was recorded. Stereo is history. The Boston Acoustic Sound System will turn your movie/sound system experience into another level of sophistication.
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8 of 9 people found the following review helpful By KMK on March 28, 2008
I got these speakers for half the price than a certain "big box" store sells them for. Great speakers, great sound, Bass is a little big and awkward looking. Satellites have a real good sound...for the price, (I got them for $250.00!!) you can't beat the Boston Acoustic MCS 100.
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4 of 4 people found the following review helpful By Chask3 on February 26, 2009
Verified Purchase
These speakers are truly capable of great sound. However, remember that this is a speaker system only, and needs to be driven by a separate receiver/amplifier unit.

Any speaker's output is no better than that speaker's input! Understand this FACT before accepting anyone's verdict of any output device being weak or inadequate for whatever reason! Frequently when people say that a speaker has weak output, it is more often than not a function of the basic system power, and/or their surround sound system's speakers being properly balanced, inclusive of the subwoofer.

Even if directly replacing one speaker with another, a change in the audible sound pressure output is not a measure of better or worse quality. Speakers may have different sensitivities by design. In my own opinion, I am more concerned about the quality of sound at a certain level than I would be about how loud they respond at a certain volume control setting. It is of little importance to me if one speaker takes 5% more turn of a volume knob for an equivalent sound level. I have plenty of power to spare on the amplifier to achieve sufficient listening levels. What matters is that when the volume reaches my comfort level, how good is the sound quality that reaches my ears.

I have these speakers in a theatre system in a room approximately 12 by 16 feet (190 square feet). They are powered by a DENON AVR-899 700 watt 7.1 channel AV surround receiver specified for 100 watts per channel into 7 channels. It is presently configured for 5.1 playback by choice. I play Blu-ray dvd's constantly, of which most are of uncompressed, master, PCM or True HD sound quality specifications.
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