HiVi B3S 3" Shielded Aluminum Driver Square Frame

Brand:| Model: B3S
Magnesium/aluminum alloy concave cones and square frames are the distinguishing features of the BS series. The B3S 3" full-range speaker's magnetically shielded design allows use in center channel and other multimedia applications.
Part # 
Weight: 1.5 lbs.  
List Price$20.99
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Part # 297-427
Qty:  EA
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Product Details

HiVi B3S 3" Shielded Aluminum Driver Square Frame

Magnesium/aluminum alloy concave cones and square frames are the distinguishing features of the BS series. The B3S 3" full-range speaker's magnetically shielded design allows use in center channel and other multimedia applications. HiVi's Symmetric Motor Drive (SMD) technology reduces the voice coil's inductance modulation and back EMF, thereby improving the speaker's controllabilty and achieving impressively low distortion. Stamped steel frame and rubber surround. These drivers are capable of covering a wide portion of the audio spectrum, and are easy to install without the need for cutting complicated driver recesses.

Product Specifications
  • Nominal Diameter3"
  • Power Handling (RMS)15 Watts
  • Power Handling (max)30 Watts
  • Impedance8 ohms
  • Frequency Response300 to 15,000 Hz
  • Sensitivity82 dB 2.83V/1m
  • Voice Coil Diameter0.75"
Thiele-Small Parameters
  • Resonant Frequency (Fs)100 Hz
  • DC Resistance (Re)6.5 ohms
  • Mechanical Q (Qms)3.75
  • Electromagnetic Q (Qes)1.15
  • Total Q (Qts)0.88
  • Compliance Equivalent Volume (Vas)0.04 ft.³
  • Mechanical Compliance of Suspension (Cms)0.99 mm/N
  • BL Product (BL)3.06 Tm
  • Diaphragm Mass Inc. Airload (Mms)2.6g
  • Maximum Linear Excursion (Xmax)3 mm
  • Surface Area of Cone (Sd)30 cm²
Materials of Construction
  • Cone MaterialAluminum / Magnesium
  • Voice Coil Wire MaterialCCA
  • Voice Coil FormerKapton® / Polyimide
  • Magnet MaterialFerrite
Mounting Information
  • Overall Outside Diameter3"
  • Baffle Cutout Diameter2.75"
  • Depth2.13"
  • # Mounting Holes4
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)
  • Sealed Volume0.1 ft.³
  • Sealed F398 Hz
  • Vented Volume0.19 ft.³
  • Vented F357 Hz
HiVi B3S 3" Shielded Aluminum Driver Square Frame
  • BrandHi-Vi
  • ModelB3S
  • Part Number297-427
  • UPC844632022999
  • Product CategoryMidrange / Midbass Drivers & Full-Range Speakers
  • Unit of MeasureEA
  • Product Rating
    (19 Reviews)
  • Weight1.5 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

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in the Midrange / Midbass Drivers & Full-Range Speakers product category.


HiVi B3S 3" Shielded Aluminum Driver Square Frame
HiVi B3S 3" Shielded Aluminum Driver Square Frame is rated 4.1053 out of 5 by 19.
Rated 5 out of 5 by from Great bang for the buckI put these in a couple homemade boxes for computer speakers. I let the speakers break in overnight and the next morning I was very impressed with the sound. Keep in mind, these are $15 speakers that I believe sound as good as a speaker system costing many times more. There is a noticeable peak at 8k hz but I corrected this with the equalizer built into my computer. The speakers (in a proper box) deliver crisp, but not overpowering highs; balanced mids and decent bass for a 3" speaker. For most people, plan on supplementing these with a subwoofer. The speakers try to put out bass, and do alright with it but the bass is lacking. I plan to make a summer project and upgrade my system to a full 7.1 system using these drivers. Definitely get these speakers if you want great sound at decent pricing!
Date published: 2013-01-14
Rated 4 out of 5 by from Surprise!Just loaded these into wooden wine bottle presentation boxes which get pretty darn close to the mfg's suggested liter volume. Look out office! Powered by the FiiO A1 14x2 amp, and no notch filter, these are absolute desktop dominators. Nice range & acceptable depth. I used a 2 lb bag of polished river stones (Hobby Lobby) in the bottom of each enclosure to add mass and diffuse the box which isn't completely sealed. Works like a champ. Fun project with VERY good results...
Date published: 2012-08-14
Rated 4 out of 5 by from Great mids and crisp highs, and nice looking!I was expecting a little more low end, but overall performance was about what i was expecting. I used these in an ipod dock that i had built for my sister as a gift. She really liked it, and was pretty impressed. I ran it off of the lepai t amp, also on sale at PE. I can write till i'm blue in the fingers, but I'll let the video of my creation speak for itself, first showing the excursion capabilities, and then later showing the clarity and volume they can reproduce.http://www.youtube.com/watch?v=YbIBtFHQKLsEnjoy!
Date published: 2011-01-11
Rated 5 out of 5 by from very impressedI used this speaker for my first attempt at a tapered quarter wave transmission line box. Used 1/2" MDF, cabinets came out to 7x7x27 with a line length of ~42". No crossover or filter. My buddy thought i was crazy putting such a small speaker in such a big box. I am amazed at the sound quality of this speaker in this box. I never thought such a small speaker could produce such a "big" sound...full bass, crisp mids and highs. Won't go super loud, but that is fine by me, as i live in an apartment.
Date published: 2010-05-24
Rated 5 out of 5 by from UpgradeI am no stereo expert, but when I popped one of the speakers in my XM boombox I turned to these for a substitution. They fit very close and greatly improved my bass and overall sound quality. These little guys will now be put to the test of 8 hours continuous play in a humid environment. So far they improved the boom in my little boombox!
Date published: 2009-10-23
Rated 4 out of 5 by from Great Little Mid/TweeterI purchased this unit about 1 week ago and have been very impressed with the results. I gave the value category a 5 because this driver performs very well for the price.As far as performance goes, I have been using this driver in a small open baffle (I decided to try this because it has a very high qts and I wanted to do something different with it than the Zaph design) and I have been very impressed. Definitely the best mid-range performance I have ever experienced (I am used to two-way Mid-woofer/tweeter designs which tend to lack in mid-range performance). As far as mid-bass and bass performance goes, it is a bit weak (due to physical size and the fact that a small driver often gets a small baffle) but otherwise a great driver. As far as full range goes, it excellent between 800hz and 7000hz. As I said, not really much bass (even in a sealed cabinet) and upper extension past 7000hz is a bit flaky (but could easily be remedied with a nice tweeter with a higher order x-over). I would rate performance as a mid-range within 800 - 7000 hz to be fantastic and performance as a full range to be pretty good. In a full range configuration I would remedy the bass problems before the tweeter problems but that is just me.Overall: Great unit to experiment with and sounds wonderful in an OB (when used in the 800-7000hz range)
Date published: 2009-04-15

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HiVi B3S 3" Shielded Aluminum Driver Square Frame

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