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Boston Acoustics S45

4" 2-way S-Series Coaxial Car Speakers

4.9

(10 reviews)

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Perfect Replacement Solution

Great sound off a low powered system is certainly achievable with the new Boston Acoustics S-Series speakers. These speakers will produce the real tones of your music as the artist originally intended. They offer a warm natural sound with the ability to really get loud. With the built-in crossover, you will hear a rich blend of music between the woofer and the tweeter, and a smooth high and low frequency roll-off. These 35 watt RMS speakers will run great off your factory or aftermarket stereo without the need for an external amplifier. These puppies are the perfect replacement for your stock door speakers!

  • 4" S-Series 2-Way Car Speakers
  • Power Handling:
    • Peak: 160 watts per set / 80 watts each side
    • RMS: 70 watts per set / 35 watts each side
  • Copolymer cone woofer
  • Butyl rubber surround
  • Neodymium tweeter magnet
  • Type S3 3/4" Soft dome tweeter
  • 4 ohms impedance
  • Integrated crossover
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty

Priced Per Pair

Product History:
Boston Acoustics SE45 thumbnail
(newest, current model)
Boston Acoustics S45 thumbnail
(previous model, replaced by Boston Acoustics SE45)
Speaker Specifications
Speaker Size4"
Design2-way
Tweeter DesignDome
Tweeter CompositionN/A
Woofer CompositionCopolymer
Woofer SurroundButyl Rubber
Peak Power Handling80 watts
RMS Power Handling35 watts
Sensitivity92 dB
Frequency Response90 - 20000 Hz
Impedance (Per Voice Coil)4 ohms
Shallow Mount InstallationNo
Top-Mount Depth2-1/16"
Bottom-Mount DepthN/A
Cutout Dimensions3-3/4"
Speaker GrillesNo
Warranty and Return Policy
Return Policy Standard Return Policy
Parts Warranty Duration1 year
Labor Warranty Duration1 year
Warranty ProviderManufacturer
Customer Review Summary for Boston Acoustics S45
Average Customer Rating is 4.9 out of 5 stars:
4.9
based on 10 Reviews
Share your thoughts with others:
Rating Distribution:
5 star:
.
.
90%
4 star:
.
.
10%
3 star:
.
0%
2 star:
.
0%
1 star:
.
0%
what's this?
Average Attributes Rating:
Durability
4.8
Value
4.8
Features
4.7
Design
4.7
Usability
4.8
what's this?
Most Helpful Customer Reviews:
May 8, 2011 good product
Review by
Leo from Richmond Hill, GA
Overall
Durability
Value
Features
Design
Usability
I have these in my dash and would recommend putting them in enclosures to get the full effect of these. great speakers though, they handle the head unit's 20 watts RMS no problem. I will be adding an amp for these soon, as well as an additional set of 6x8 speakers run by the same amp to fill out the sound.
I recommend these speakers..
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April 10, 2011 Impressive Sound!
Review by
M. Conner from Fort Wayne, IN
Overall
Durability
Value
Features
Design
Usability
These little 4" speakers surprised me with how loud they are. I originally had an old pair of Kenwood eXcelon 4 inchers installed in the dash of my '92 Mercedes 190E but after filling the rest of the car with Boston Acoustics (SX50s, SL60s, SX55s, and 2 8" Rally Series Subs) I figured I might as well finish off with these. They dropped right in to the factory holes, and the tweeters were low enough that the factory covers easily fit over them. They were so much louder than the Kenwoods that I had to readjust the balance on my head unit to get the sound centered again. Great quality, for a great price!! Highly recommended!
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March 25, 2011 Amazing
Review by
Justin from Sacramento, CA
Overall
Durability
Value
Features
Design
Usability
These were the best sounding 4" speakers I've ever heard. I've tried out all sorts of 4" speakers in my car and hands down, the best. I could no longer keep them installed due to the depth being over 2".
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November 24, 2010 Good Quality
Review by
MG from Columbus, OH
Overall
Durability
Value
Features
Design
Usability
I installed these in a 1983 Mercedes 380SL. The speakers have a low enough profile that the OEM grills for the car will fit over them after install. This an issue on the 70-80's Mercedes SL series. Using only these 2 speakers (as the car has to be modified to add more) the sound is good considering. All in all they are good speakers for the price and the form factor is a big plus...
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December 13, 2009 the best
Review by
stan from huntsville, al.
Overall
Durability
Value
Features
Design
Usability
i love theses Speakers. i bought 6 of them for my 1990 jag xj6. these speakers are tight and punchy, and very clear . the bass is nice too.
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View All 10 Reviews for Boston Acoustics S45
Speaker Wire
Upgrade your factory speaker wire to aftermarket speaker wire and hear the difference! Using thicker gauges, newer technology, and higher quality materials, aftermarket speaker wire is key to upgrading the sound in your car.
 ProductPriceAdd?
20 ft. of 16 AWG KICKER X-Series Speaker Wire20 ft. of 16 AWG KICKER X-Series Speaker Wire
Get high quality sound from Kicker's twisted-pair, true to gauge speaker wire.
$19.99
50 ft. of 14 AWG StreetWires Speaker Cable50 ft. of 14 AWG StreetWires Speaker Cable
Streetwires Super Cable provides a zero-grip insulation for a smooth install as well as true gauge twisted wire construction.
$29.99
50 ft. of 16 Gauge Monster XLN Series Speaker Cable50 ft. of 16 Gauge Monster XLN Series Speaker Cable
Upgrade to clean and clear sound with Monster Cable's Xtra Low Noise (XLN) construction.
$35.00
Sound Dampening Material
Get optimal sound from your new speakers with some high quality sound dampening material. It will keep the road noise out and the music inside the car.
 ProductPriceAdd?
Dynamat Xtreme Speaker KitDynamat Xtreme Speaker Kit
Eliminates speaker panel distortion and reduces vibration, rattles, and squeaks!
$21.99
Dynamat Dynaxorb Speaker PakDynamat Dynaxorb Speaker Pak
Revolutionary damping material designed to prevent distortion caused by the back wave of a speaker interfering with the front wave.
$19.99
Dynamat Rubber RollerDynamat Rubber Roller
Install your Dynamat with ease! This heavy duty rubber roller is designed specifically to install your Dynamat products!
$18.99
Ballistic Speaker KitBallistic Speaker Kit
Eliminate speaker distortion, road noise, and rattles with this sound dampening material from Ballistic.
$15.99
Speaker Baffles, Spacers, and Depth Extenders
Mount your speakers in the location that you need with these speaker spacers, extenders, and adapters.
 ProductPriceAdd?
3/4" Depth Extender for 4" Speakers3/4" Depth Extender for 4" Speakers
Add 3/4" of extra space when installing your speakers.
$6.99
Installation, Tools & Accessories
Get all of the tools and accessories to install your new speakers like a professional, or take your car to an expert and have them installed by redeeming professional installation cards.
 ProductPriceAdd?
Door Panel & Upholstery Remover ToolDoor Panel & Upholstery Remover Tool
The ideal tool for removing your car's door panels to replace you speakers!
$11.99
Universal Window Handle Remover ToolUniversal Window Handle Remover Tool
Designed to easily remove the manual window handles without breaking any interior pieces.
$4.99
Universal Wire Puller & GrabberUniversal Wire Puller & Grabber
Running wires has never been easier! This wire puller allows you to run wires through those hard to reach places!
$6.99
16-14 AWG Butt Connectors16-14 AWG Butt Connectors
These blue butt connectors are ideal when connecting thicker speaker wire your new aftermarket speakers!
$4.99
Tone Generators and Sound Testing Equipment
Optimize your new system's sound quality by testing and calibrating all of your components with these items.
 ProductPriceAdd?
AutoSound 2000 CD-101AutoSound 2000 CD-101
Low frequency test CD
$12.99
AutoSound 2000 CD-102AutoSound 2000 CD-102
High frequency test CD specifically designed for the set-up and evaluation of sound system imaging and placement.
$12.99
AutoSound 2000 CD-103AutoSound 2000 CD-103
Audiophile reference series test disc for evaluation of all audio components.
$12.99
Main Product
 ProductPriceAdd?
Boston Acoustics S45Boston Acoustics S45$59.95

Product Summary

Manufacturer: Boston Acoustics
Model number: S45
UPC: 690283357221
Weight: 2.00 lb
Internal SKU: s45
Internal product ID: 5018

Price Information

$79.99

–$20.04

$59.95

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