If the music in your car leaves you uninspired, here's a great way to brighten things up. Install Boston Acoustics' ISTS tweeters in a good location in your interior, and you'll hear a whole new world open up. These 1" tweeters add the high-frequency details that create a stronger stereo image and give you more realistic sound.

These dome tweeters are made from Kortec®, a strong, lightweight material that's well-suited for high-frequency reproduction, so your highs can really sparkle without sounding shrill. The included crossovers prevent lower frequencies from reaching the tweeters and compromising sound quality. The package includes hardware for flush-, surface-, and angle-mounting your tweeters, so you can choose the best configuration for your soundstage.

Product Highlights:

  • 1" Kortec dome tweeters
  • flush-, surface-, and angle-mount hardware included
  • IS Type-S external crossovers
  • power handling: 2-40 watts RMS (100 watts peak power)
  • frequency response: 8,000-22,000 Hz
  • sensitivity: 90 dB
  • top-mount depth: 1"
  • warranty: 1 year
  • Our 60-day money-back guarantee

Hands-on research

What's in the box?

Download owner's manual

  • 2 Tweeters
  • 2 Crossovers
  • 2 Flush-mount cups
  • 2 Surface-mount cups
  • 2 Angle-mount bases
  • Two lengths of 5' speaker wire (with male quick-slides on one end and female quick-slides on other end)
  • Eight 1" self-tapping screws
  • Four 1/2" self-tapping screws
  • 4 Metal clamps
  • Hex-key
  • Instructions/Specifications
  • Product Registration Card

Product Research

Features
Dimensions

Features

Overview: The Boston Acoustics IS Type-S (ISTS) Imaging System contains two 1" tweeters, two passive crossovers, speaker wire, and mounting hardware. The Boston Acoustics ISTS optimizes the soundstage height in your vehicle and easily incorporates into any existing car audio system.

1" Tweeters: The tweeters feature 1" Type S-1 Kortec domes for smooth high frequency response and linearity. Kortec is a specially engineered material with the rigidity of a composite dome and the smoothness and detailed response of cloth.

Mounting Cups: The supplied Quick-fit mounting cups simplify tweeter installation. The tweeters come with flush, surface, and angle mount brackets.

Passive Crossovers: On each tweeter crossover, you can adjust the tweeter output by -3, -6, or -9 dB. The crossover's top-cover is removable to adjust tweeter output and to make speaker connections. A small philips-head screwdriver is required to connect the included speaker wire to the crossovers.

Speaker Wire: The Boston Acoustics ISTS includes two 5' lengths of speaker wire to attach the tweeters to the crossovers. The speaker wire features male and female quick-slide connectors.

Dimensions

Tweeter Dimensions: The tweeter features the following dimensions when using the surface, flush, and angle mount brackets, or bottom mounting the tweeter.

Tweeter Dimensions Frame Diameter Cutout Diameter Mounting Height Mounting Depth
Bottom 1.595" 1.595" 0" 0.975"
Flush Mount 2.035" 1.735" 0.4375" 0.8125"
Surface Mount 1.875" 1.745" 1.065" 1.0" (screw depth)
Angled Surface Mount 1.875" Screw holes only (0.8125" apart) 1.5" 0.9375" (screw depth)

Crossover Dimensions: Each crossover has the following dimensions.

  • Width = 6.875"
  • Height = 1.4375"
  • Depth = 1.6875"

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.

Boston Acoustics ISTS Reviews

Average Customer Review:

2 reviews
Review this product
Great Gear Giveaway

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

(0)
(0)
(0)
(0)
(0)

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

look good sound good

Written By JEZ, Newville, PA. on Friday, March 22, 2013

Crutchfield Customer Review (What's this?)

They deliver nice crisp highs. The speakers in the doors have tweeters. But these speakers have a better sound, or its because they are mounted up at the top of the door panel, just inside the rear view mirrors, and they are more directional. Whatever it is, it improved the over all sound of my stereo. They came with a verity of mounting options, and they should be able to be mounted into any vehicle without too many problems.

Pros: Sound good, good insulation options, look nice

Cons: I used the mounting base that lets the speakers be mounted on an angel. The speaker wires that came with the speakers had terminal ends that when installed onto the sparkers upper base, would not fit inside the mounting lower/angel base. I had to cut the terminals off the speaker wires and solder the wires right to the speaker mount. But the mount had holes in the terminals that were made for that purpose. If you know how to solder its not a big deal.

Sounds very good!

Written By Marc D, Brevard County, FL on Monday, January 23, 2012

These tweeters sound good, and out of the box, they were impressive (solid, heavy feel, nicely packaged). I am sending them approximately 35 watts from an arc audio 125.2 mini amp, and they do not disappoint me. I have them set at -3db on the crossovers, and they are not too harsh (95 percent of the time) and really bring the front soundstage to life. I would definitely buy these again. Well worth the price!

Pros: Sounds Good. Really lifts my soundstage from being mounted in the corners of the front dash.

Cons: They are 8 ohms, so be careful when designing your system.

Get everything you’ll need to enjoy your new Boston Acoustics ISTS

You may need speaker wire to get the signal to your tweeters. It's sold by the foot, so enter the amount you'll need when you get to your cart.
Reduce ambient road noise and your vehicle's "rattles," for better sound inside your car.
The right tools will help keep your installation simple and clean.
T-Spec 16-gauge Speaker Wire

T-Spec 16-gauge Speaker Wire

Black/white jacket — priced per foot

Item #: 120SW16WB1

(13)

T-Spec 12-gauge Speaker Wire

T-Spec 12-gauge Speaker Wire

Black/white jacket — priced per foot

Item #: 120SW12WB1

(31)

Stinger PRO Series Speaker Wire

Stinger PRO Series Speaker Wire

Priced per foot (16 Gauge)

Item #: 541SPW516B

(53)

Dynamat 10415 Xtreme Speaker Kit

Dynamat 10415 Xtreme Speaker Kit

Two 10-in. x 10-in. Sheets

Item #: 15410415

(46)

$26.99
Add to Cart
Dynamat 10435 Xtreme Door Kit

Dynamat 10435 Xtreme Door Kit

With four 12" x 36" sheets — covers two doors

Item #: 15410435

(32)

$99.99
Add to Cart
Metra Crimp Tool and Connectors

Metra Crimp Tool and Connectors

Package contains crimp tool and over 150 pieces

Item #: 120CRIMPKT

(15)

$19.99
Add to Cart
S&G Wire Cutter/Stripper Tool

S&G Wire Cutter/Stripper Tool

Cuts and strips 12- to 22-gauge wire

Item #: 18119100

(17)

$19.99
Add to Cart
S&G Tool Aid 87650

S&G Tool Aid 87650

Door Trim and Panel Removal Tool

Item #: 18187650

(71)

Bojo Trim Panel Tools

Bojo Trim Panel Tools

Set of 6 pry tools — helps remove interior and exterior trim and door panels

Item #: 126CR6NGL

(54)

$24.99
Add to Cart
Skewdriver Pro SPK4042

Skewdriver Pro SPK4042

Ratcheting straight and offset screwdriver set with 40 bits (Skewdriver Pro with ratchet handle, pictured)

Item #: 180SPK4042

(8)

$49.99
Add to Cart
Spec Tools SQR-200a Squeeze Wrench

Spec Tools SQR-200a Squeeze Wrench

Narrow space ratchet kit with 18 sockets

Item #: 180SQR200A

(1)

$49.99
Add to Cart
Install Bay 3320

Install Bay 3320

Auto-ranging digital multimeter

Item #: 1203320

$39.99
Add to Cart
Install Bay IB35400

Install Bay IB35400

Premium door panel and trim tool

Item #: 12035400

$15.99
Add to Cart
Bojo Trim Panel Tools

Bojo Trim Panel Tools

Set of 6 pry tools — helps remove interior and exterior trim and door panels

Item #: 126CR6LNGL

(4)

$29.99
Add to Cart