Infinity Primus 5.1 Speaker System October, 2003 Brett Johnson
For this review, we had a pair of Primus 360 Floor-Standing Speakers, a Primus C25 Center Channel Speaker, a pair of Primus 150 Bookshelf Speakers, and the PS-12 Subwoofer. There are three subwoofers, including the small PS-8, the mid-sized PS-10, and the larger PS-12 which I used in this review. (The subwoofers are not part of the Primus series.)
the speakers are intended to be “voice matched”, and are finished
identically, so they can be used in any combination to create a system.
The 150 has key-hole brackets for wall mounting. The 140 has
threaded inserts to accept aftermarket mounting systems.
The combination of
drivers and cabinet construction are optimized to reduce internal
resonances and achieve optimum sonic performance. The line is intended to
be “room friendly”, making use of a specially shaped waveguide for the
tweeter. Infinity expects the Primus series to provide “precise imaging,
even frequency response, and controlled directivity over a wide listening
area”. The Primus line seems to be very efficient with the 360 @ 93 dB, the
C25 @ 90 dB. The smaller 150 is less so @ 88 dB, but it can be attributed to
the driver compliment of only one tweeter and a 5.25” woofer.
I took the next step and raised the 150s up 24 inches for a
total height of 5 feet off the floor. This helped with filling in the
sound field a bit during heavy pans, but it did not make things blend as well
as I had hoped.
I used the following equipment during the
evaluation of the Infinity Primus speakers: