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Boston Acoustics S85

6"x8" 2-way car speakers

30 Reviews

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Item # 065S85

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Overview

Our take on the Boston Acoustics S85

Boston Acoustic's S series speakers let you enjoy clear, natural sound, even with a low-powered system. And with a wide variety of sizes, you'll find a set for most commonly-sized speaker openings.

Boston Acoustic's S series speakers let you enjoy clear, natural sound, even with a low-powered system. And with a wide variety of sizes, you'll find a set for most commonly-sized speaker openings.

The Boston S85 6"x8" speaker features a 3/4" tweeter with a built-in cooling system for long term reliability and excellent power handling. A contoured tweeter plane guides high-frequency output to create a larger listening "sweet spot," while Boston's Amplitude Modification Device (AMD™) reduces harshness in the upper mids for clear, detailed sound.

The sturdy woofer cone teams up with a durable butyl rubber surround to produce tight, clean bass with minimal distortion. And you'll hear a smooth blend between the woofer and tweeter, thanks to the built-in crossover. Grilles are not included. (Factory grilles are appropriate for most installations.)

Note: Although the Boston Acoustics owner's manual for this speaker says that it's a 5"x7" speaker, our research has determined that it only fits into 6"x8" openings.


Priced per pair

Product Highlights:

  • 2-way 6"x8" speakers (pair)
  • copolymer woofer cone with rubber surround
  • 3/4" Type-S3 soft dome tweeter
  • power range: 2-35 watts RMS (120 watts peak power)
  • frequency response: 50-20,000 Hz
  • sensitivity: 92 dB
  • top-mount depth: 2-1/4"
  • warranty: 2 years
  • Our 60-day money-back guarantee

What's in the Box:

  • Two 2-way speakers
  • 2 Bottom mount rings
  • Two 8" Lengths of speaker wire (each length of speaker wire has quick-slides on one end and bare wire on the other)
  • Eight 1" Hex head screws
  • Allen wrench driver attachment
  • 8 Speed clips
  • 8 Butt connectors
  • Specification sheet
  • Warranty card
  • Product registration card

Installed 4 of these in my 2010 Ford F-150. Much improved sound over factory speakers. Much better mids and highs. Good bass coming from 6x8 speakers on a factory head.

Brad G, Tupelo, MS

Reviews

Boston Acoustics S85 Reviews

Average Customer Review(s):

(30 Reviews)

Much better than OEM

BeavertonBill from Oregon on 8/2/2011

2000 Ford Explorer
Crutchfield Customer Review (What's this?)

Retired and looking for make-work. Replaced my 11 year old speakers on a whim and was floored by the sound from these speakers. Very rich sound and I had no idea my music had that much data in them. I spare no expense on in-home systems and have learned a valuable lesson on carrying those demands to my rig. I will probably drive more.

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Nice 2way speakers

Papa Rock from South Texas on 6/27/2011

2008 Mercury Grand Marquis
Crutchfield Customer Review (What's this?)

Wasn't sure I made the right choice at first. Install of these(2pair) in my '08 Grand Marquis LS was almost simple for a first timer. But after installing my JVC-XR610 deck all me worries went away. These have plenty of bass and the sound is pretty darn good. For the money they better sound good! I may not need a subwoofer after all! Good choice for factory replacements as long as you have a good deck to run them.

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Boston Acoustics S85

Skipster from Springfield IL on 4/25/2011

Crutchfield Customer Review (What's this?)

These are 5x7 not 6x8 speakers. Says so right on the box. They are in all 4 doors in my '03 Explorer and powered only by the Kenwood head unit. That's why I chose these low sensativity speakers. They responed well to all EQ settings. Very adjustable. I use them in conjunction with a 10" Subwoofer and amp. They met all my expectations. I'm very satisfied.

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Good choice for stock system upgrade

ChrissyL from Seattle area on 4/18/2011

2008 Ford Focus
Crutchfield Customer Review (What's this?)

A good pairing with the stock head unit in my 2009 Focus. Just couldn't give up my SYNC! You can hear the Advent heritage in the sound of the BAs: smooth, clear mids and highs, much less harsh and fatiguing than the whizzer-coned Ford stock 6x8s. Less mud and a bit more extension in the bass and mid-bass. I think the four BAs would sound better with an external amp, but they were chosen to be satisfactory with stock output. A small powered sub would help solidify the bottom end, much as was the case with the Advent set-up I paired with the little Kenwood under-seat box in my station wagon years ago. (Bought those from Crutchfield in the 1990s and they're still going strong, by the way.)

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Boston Acoustic S85 (2007) Ford Mustang Convertible

Jason A. from Detroit, MI on 3/28/2011

2007 Ford Mustang
Crutchfield Customer Review (What's this?)

I just installed 2 sets of these speakers in my 07 mustang convertible. I am running a kenwood DVD h.u. I wanted to upgrade my speakers to get a better sound quality especially from the rear speakers. They sound horrible in a convertible. There is no difference in sound quality with the s85's in the rear. So I thought the door speakers would be an improvement too! Sad to say not much of a difference between the stock speakers and the S85's. I have read all comments for these speakers and a few people say there are break in instructions but I have not seen any instructions. I think i will try them with an amp or take the back and replace with infinities. Oh yeah, they do distort the more you crank up the volume. Even half way, I have to adjust the bass way down. Lacking bass as well.

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Decent for the Price

Zig from Chicago, IL on 3/19/2011

2005 Ford F-150
Crutchfield Customer Review (What's this?)

Nothing wrong with these speakers - they are a big upgrade from the factory speakers and they work fine. They are reasonably priced. Just don't expect them to turn your vehicle into a concert hall. Good, value priced speakers.

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Great Sound

Brad G from Tupelo, MS on 3/4/2011

2010 Ford F-150 XLT
Crutchfield Customer Review (What's this?)

Installed 4 of these in my 2010 Ford F-150. Much improved sound over factory speakers. Much better mids and highs. Good bass coming from 6x8 speakers on a factory head.

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Boston Acoustics S85

ROD from Santa Fe, NM on 12/22/2010

Have to say a lot of people here are missing out if they purchased these speakers without an amp. I don't know how they sound without one, but mine sound amazing with an amp. Very clear and great bass.

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they are worth the money

Big Daddy from Charleston, West Virginia on 11/24/2010

on my vacation i went down to wills and bought me a set of these Boston Acoustics S85 door speakers they took out my old factory door speakers and installed these Boston Acoustics S85 replacement door speakers in my 2000 Ford Ranger xlt xcab and they sound a whole lot better than my old factory door speakers and i would recommend these to any one who is on a budget and im just waiting for my factory cd player to go before i go and replace my factory cd player with a aftermarket cd player / radio

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2011 Ford Edge

Mike C from Dayton, OH on 11/15/2010

Crutchfield Customer Review (What's this?)

Shouldn't come as a surprise, but these speakers are clearly an upgrade over the factory setup of my new Ford Edge. The bass response is most evident, mids and highs are better as well. My only complaint was that the highs aren't as crisp as I would like. I'm sure this is due to the fact that these are 2-way speakers and I'm still using the factory radio with no amp. I'm stuck with the factory setup because it has the myfordtouch synch which I have no intention of removing! The Crutchfield technician suggested the B.A.'s because it doesn't take much to power them (2-50 watts RMS) and he was right on. The installation instructions were for the 2010 Ford Edge because Crutchfield hasn't evaluated the 2011, but they were pretty close. The only difference is a few door screw locations..so no big deal. In fact, the install (with the wire adapters) was painless. I would definitely recommend these speakers for anyone who wants an immediate impact to their sound but without separate tweeters, you may be disappointed in the highs. Oh yeah, these speakers sound better with time. As in, follow the break-in instructions!!

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2006 f-150

eric from columbus ohio on 6/21/2010

Crutchfield Customer Review (What's this?)

I recently added a kenwood dnx7160 to my truck but still did not feel the factory speakers were giving me the sound that I wanted.The snare drum seemed to be missing along with a lot of highs and mids.I replaced the front door speakers with the s85 and with a little equilizer adjustment the sound was much improved.I feel the factory rear speakers give a good bass sound so Im leaving them for now.I also used the baffles which give a help with the bass in the front.My barometer on the speakers is the song My Old School by Steely Dan and wow the mirrors shook with no distortion,I heard notes that I never heard with the stock speakers. You will have to bend the screw tabs on the ends of the speaker for them to fit in the factory cut out which is no big deal.

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Ho Hum

F430TH from LA on 4/11/2010

O.K. speakers. Great mids and highs, but bass is lacking even with upgraded Alpine head unit. I'm not the guy that goes thumping down the street, but I need more depth and clarity than these have to offer - especially for the higher price. Returned to Crutchfield with ease and upgraded to the Infinity Kappa 682.9 cf. Wow! What a difference!

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Good buy

Kevin from Birmingham, AL on 2/22/2010

2005 Ford Explorer
Crutchfield Customer Review (What's this?)

Replaced the stock speakers in an 05' Ford Explorer. Upgraded the Head Unit as well so hard to really tell how much that helped since it has more power going to the speakers than the stock tuner, but the speakers themselves sound very good for the money. Sound like speakers far more expensive. Impressed with the lows and good mids as well. Fairly crisp highs. I have 22 watts RMS going to them and they may be better off with a bit more power as they distort at very high volumes but I am 41 and don't really do the greasy kid stuff thumping at the stop light anyway. Oh, and they're 6x8's to the guy who said they are smaller than the pioneers he bought first. They're 6x8's, period. Excellent value speakers.

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Great speakers

phil from heath Ohio on 2/11/2010

1996 Lincoln Town Car
Crutchfield Customer Review (What's this?)

First of all don't pay attention to anyone complaining about the mid and high range sounds. They are running these off of a factory receiver and good sound starts there. With that said some amplification makes these scream. I installed these in the front door in my town car. I have an alpine head unit with the 45 watt boosting amp and it does the job. My mirrors shake, yes the ones on the door. Paired up with my 6X9's in the rear deck I have no need for a sub at all.

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About 75%

Candz from Leominster, MA on 9/14/2009

2006 Ford Expedition
Crutchfield Customer Review (What's this?)

Let me start out with the good. I Bought these to replace the stock speakers in my 2006 expidition that had nice deep bass but lacked in highs and mids. These s-85s have extraordinary highs and mids. I am hearing instruments I never heard in my music before. The only thing lacking is the bass. There isn't any. And if you try to turn it up, the woofer distorts. I had to turn the bass down three levels from where I had it set for the stocks. Now I am using my rear stocks as a poor mans sub woofer. They are good, just wish they had a little bass.

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Nice

Zach from Auburn, ME on 5/10/2009

1998 Ford Taurus

I have only had these in my 98 Ford Taurus for a couple of days and I'm so happy with them that I'm going to get another pair to replace my stock front speakers at point Can't to have 4 of these in my car!!!

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Good speakers, but not for stock replacements

Matt from Michigan on 5/5/2009

2009 Ford F-150 FX4
Crutchfield Customer Review (What's this?)

I purchased these to replace the muddy-sounding stock speakers in my 2009 F-150. They sound great at lower volumes, but started to distort at about 1/2 volume on the factory radio. They'd probably sound great with an amp--but that would have turned my upgrade to a several hundred dollar upgrade requiring a lot of work--neither of which I want to do. And if I was going to do a significant upgrade, I'd go with a component set anyway.

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Great sound in a noisy Diesel

Scott from Richmond, Va. on 3/5/2009

1999 Ford F-250 Super Duty
Crutchfield Customer Review (What's this?)

I installed 2 sets of these in my '99 F250 diesel and the sound is awesome. They have great sound through the entire spectrum, and cover up the noise of the motor well. I am running them with a Pioneer deh-p6000ub which gives them much better sound than the factory unit. They were a breeze to install, about 15 minutes per speaker. GREAT PRODUCT!!!

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Almost There

gregory from Dundee fl on 1/23/2009

1989 Ford Bronco
Crutchfield Customer Review (What's this?)

good build quality a little disappointed in the smoothness of the highs they sound a little harsh, but they are still breaking in guess i just expected more because after all they are Boston Acoustics

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Clear,smooth,punchy WOW!

Thomas from Courtland,Al on 12/13/2008

I bought a set of these to replace the rear panel speakers in my 2007 Hyundai Accent hatch.I have already added a Rockford Fosgate 12" Punch sub and Kicker Kx150 amp for solid bass.Still having the factory stereo and speakers it was lacking in clarity in mirange and upper bass,the seperate tweeters in the doors were too bright if turned up enough to get mid-bass out of the fronts.The bass in the rear panels was very muddy in comparison. After adding these WOW! What a difference.They provided a smooth transision from the deep bass in the rear all the way up to the highs in the front.The clarity in midrange is awesome to say the least.They are very clear with highly defined bass that is mellow and punchy.Midrange is solid and highs blend in nicely. Perfect for rear fill.I can't wait to upgrade my head unit and front door speakers now for the total package.I am sure they will sound even better with a higher output aftermarket HU.I would recommend these to anyone who wants excellant sound reproduction from a full range speaker without needing a seperate amp.

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Great Stock Speaker Replacement

Justin from New Orleans, LA on 12/3/2008

I drive a 2007 Ford Ranger that is still under warranty, so I didn't want to go through the hassle of installing a bunch of gear and somehow void it. Being a self-proclaimed "audiophile," I just couldn't stand the stock sound. I bought these and hoped that by simply changing the stock 6x8s that I could get better sound. Well, I did! I didn't expect too much bass from them, but I was surprised by what they did put out. I won't be needing a subwoofer anytime soon. The midrange is a great improvement over stock. The upper range, while better than stock, leaves a little bit to be desired. Infinity has better highs, but you'll need an amp to get better bass and midrange to get on par with these Boston Acoustics. Overall, I'm pleased with this purchase. I have decent sound out of the highly distorted stock radio. With an aftermarket stereo, they would sound even better, I'm sure!

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Great speaker for the price

Anonymous from Frenchtown, NJ on 9/10/2008

Crutchfield Customer Review (What's this?)

I bought for a "beater" van I use for work. They are a great speaker for the price. They respond and sound awesome. I have them mounted in the back of a 91 Ford Club Wagon. I had put a pair of Pioneer of the same price and one speaker went bad after a year and a few months. So purchased these and they sound far better then the Pioneers of the same price class. Also they did fit in the factory cut outs and I was able to use the factory grills, making the install a total of 3 minutes per speaker. When I am on a job I open the back doors and I have great sound.

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They Keep Me Rocking

Arthur from Belton,Texas on 7/28/2008

Crutchfield Customer Review (What's this?)

I first replaced the rear factory speakers with the S85's in my 02 Explorer, and immiediately noticed the deep, smooth low end that I not only heard, but felt aswell. Then there's the midrange which is silky and sparkling which allows vocals to be heard with clarity, and last but not least comes the high end which is definitely ear pearcing! In ending, after replacing the front speakers with S85's aswell, they earn not only a 5 all around, but deserve a 10 ! Soon, I'm exchanging the factory cd player with a Kenwood eXcelon KDC-X492,which I'm sure will make the S85's really sing! Thankyou Crtuchfield, for the outstanding customer service,all the optional connectors and self installation guides you provide.

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Boston Acoustics S85

clifford from ABQ, NM on 4/28/2008

2005 Ford Mustang
Crutchfield Customer Review (What's this?)

I purchased these speakers to replace the factory set in my 2005 Mustang convertible. The factory set up is the shaker 500 system. These speakers when combined with dynamat and the baffles were a tremendous improvement. The clarity and vibrance of the highs and mids far exceeds what the factory speakers could produce. They have the ability to properly reproduce all the different styles of music I listen to-from country to metal to rap, and yes, even old school Sinatra.

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Terrific Sound from Boston Acoustics S85 Speakers

Bill from Indian Springs, AL on 8/27/2007

Crutchfield Customer Review (What's this?)

I installed four Boston Acoustics S85 speakers in my Ford F-250 Super Duty Pick-Up Truck, and they really sound fantastic. The treble is bright and sharp, and the bass is really huge and mellow. The S85 speakers are really great.

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Fantastic Sound

Andrew from Savannah, GA on 1/27/2007

Crutchfield Customer Review (What's this?)

These speakers sound great in my 03 Tacoma with a new receiver. They have good crisp highs and nice round bass. You'll need an amp and a subwoofer to get really thumping bass, but these are remarkable. I would say they stack up very well to the Infinitis I installed in the rear doors of my truck; they might even sound slightly better (which is NOT what I expected).

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Good set of speakers

aeond from Portage, MI on 5/25/2006

This is a good set for my needs. I replaced my stock speakers in the rear panels of my 01 cougar with a set of these, and coupled with the Boston SL80 plate speakers, they really shine. The SL80's help my subs reach a nice bass clarity, so these dont have to do anything but give me some great mid-high to high frequencies, and they are wonderful for that purpose. Clear, Clear, Clear! I would buy them again.

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Boston Acoustics S85

Mike from Boston,MA on 3/9/2006

2004 Ford F-350
Crutchfield Customer Review (What's this?)

I bought these speakers thinking they would be a dramatic improvement over the stock speakers in my '04 F-350. The sound quality and lows were not anything of what I expected. Not much, if any, improvement over stock. Having had the Pro Series in my previous truck,<BR>I figured these would represent Boston Acoustics reputation. Next time I will upgrade to amplifier

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Might not be worth the money

Michael from Havelock, NC on 1/14/2006

2003 Ford F-150
Crutchfield Customer Review (What's this?)

I put these speakers in the front doors of my Ford F-150. First of all, they are small for 6 x 8 speakers--I put them face to face with the Pioneer 6 x 8's I was putting behind the seat and there is a good 1/4" all around. I would say there is not enough of a difference in the sound quality between these and their cheaper Pioneer counterparts. If I were to do it again, I'd either save some money or go with a different brand in the same price range (probably Infinity).

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Boston Acoustics S85

Keith from Long Beach, CA on 7/20/2005

2002 Mazda Protege5
Crutchfield Customer Review (What's this?)

These Boston Acoustic speakers are a tremendous improvement over the original factory speakers in my 2002 Mazda Protege 5. The clarity in midrange and treble is amazing now, and there is a somewhat smaller but still very noticeable improvement in bass. And Crutchfield has made it possible for me to install them myself with great step-by-step instructions. What a great value!

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Details

Hands-on research

Features and Specs

General
Speaker Size
Design 2-way
Tweeter Design 3/4" Dome
Impedance (Ohms) 4
Tweeter Composition Not Given
Woofer Composition Copolymer
Woofer Surround Butyl Rubber
Parts Warranty 2 Years
Labor Warranty 2 Years
Specifications
Sensitivity (1W at 1 meter) 92
Sensitivity at 2.83 volts N/A
Frequency Response 50 - 20k Hz
Minimum RMS Wattage 2
Maximum RMS Wattage 35
Peak Power Handling (Watts) 120
Top-mount Depth (Inches) 2 1/4
Bottom-mount Depth (Inches) 2 3/4
Cutout Diameter or Length (inches) 0

Product Research

Features
Speaker Size Note

Features

Tweeter: The type-S3 3⁄4-inch tweeter's soft dome is Ferro fluid cooled for excellent power handling and reliability. The AMD (Amplitude Modification Device) located on the tweeter plane provides acoustical tuning for the midrange response while the shape of the tweeter plane improves off-axis response.

Woofer: The copolymer woofer cone with durable butyl rubber surround stands up to the harsh automotive environment.

Crossover: Each speaker in Boston's S line features a specifically tuned crossover to deliver the best transition between the woofer and tweeter.

Speaker Size Note

Speaker Size: Although this speaker looks like a combination 5"x7"/6"x8" speaker, the cutout required for the speaker is larger than that of other combination 5"x7"/6"x8" speakers. Because of the larger cutout requirement, this speaker will only work in 6"x8" speaker locations.

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 verify what’s in the box, 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.

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