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Infinity Primus 150

See all products in the Infinity Primus series
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  • Quick specs
  • Dimensions (WxDxH): 7.4 in x 10.5 in x 12.7 in
  • Color: Black
  • Amplification type: 2-way Passive
  • See full specifications

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The good: Two-way bookshelf design featuring a proprietary 5.25-inch woofer and 0.75-inch tweeter; robust construction; straightforward wall-mounting.

The bad: Bass response is slightly lacking; not particularly attractive.

The bottom line: Up front or at the rear in a surround position, this little speaker serves up sweet sounds.

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CNET editors' review

  • Reviewed on: 11/14/2003
  • Released on: 07/15/2003

Nobody will ever confuse an Infinity Primus 150 bookshelf speaker ($99) with a satellite from a home theater in a box. The 150 is too big and too well finished to be mistaken for a lesser competitor, and its metal woofers and tweeters just don't exist in all-in-one systems.

Measuring 12.75 inches high, 7.5 inches wide, and 10.5 inches deep, the 150 is medium-size. The very solidly constructed design weighs an unexpectedly heavy 13.5 pounds. Black "wood grain" vinyl is the one available finish, and the removable grille cloth comes in black only. Infinity offers two other bookshelf models: the smaller Primus 140 ($89) and the bigger Primus 160 ($129).

The 150's magnetically shielded 5.25-inch woofer and 0.75-inch tweeter use Infinity's proprietary Metal Matrix Diaphragm technology. These anodized-aluminum drivers supposedly generate lower distortion than their more common plastic and metal counterparts. The keyhole slots on the rear panel and the rubber bumpers ensure easy wall-mounting. And thanks to the front-facing port, being up against a wall won't adversely affect the 150's sound.

We used a pair of 150s with two of their Infinity siblings: a Primus C25 center speaker and a PS 10 subwoofer. The 150s' laid-back treble may lack the detail of, say, PSB Alpha Bs, but the Primus models are commendably easy on the ears. Even at the end of long listening sessions, they sounded great.

We never did get the PS 10 to blend seamlessly with the 150s; the midbass was always a little too lightweight for our taste. That's not to say it was bad, but the 150s' lack of warmth and fullness was noticeable on DVDs and particularly with music.

All in all, the 150 is far more refined and substantial than the plastic boxes populating lesser all-in-one home-theater packages. The Primus is also multitalented, working equally well in the main front positions and as a surround unit. Two 150s can fill even a 300-square-foot room with sound and play louder, without strain, than any HTIB speakers we've heard.

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Reviews from around the WebPowered by alaTest

  • alaTest.com

    Editors' rating: 75

    Summary: alaTest has collected and analyzed 36 reviews of Infinity Primus 150 from international magazines and websites. Experts rate this product 85/100 and users 86/100. Comparing these reviews to 35249 other Home Theater Systems reviews gives this product an overall alaScore™ 75/100 = Good.

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  • newbie.org

    Editors' rating: 100

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Infinity Primus 150