Instruction d'utilisation 3D Connexion Infinity Systems Interlude IL120s

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108-0111-Infin-p074-76,78x 1/24/02 1:32 PM Page 74
EQ UIPMENT REPOR T
SUBWOOFER
Infinity Systems
Interlude IL120s
Robert Deutsch
A s everyone—at least, every- ful as they seem. The ones I’m familiar with with the main speakers. Fair enough, but
one who reads this magazine—knows, the all use a mathematical model that assumes even if you ignore the possibility that you’ll
sound of a subwoofer in a room depends a shoebox-shaped room with no openings have to make tradeoffs among the different
no

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108-0111-Infin-p074-76,78x 1/24/02 1:32 PM Page 75 INFINIT Y SYSTEMS INTERL UDE IL120S but, as work by Floyd Toole and his associ- woofer in the room, and that this typically get the Test & Measurement Kit. In that ates at the National Research Council in involves some practical constraints. Howev- case, you can try adjusting the controls by Ottawa has shown, the bandwidth of the er, while rejecting the use of conventional ear, listening to music of appropriate bass sort of peak you’re likely

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108-0111-Infin-p074-76,78x 1/24/02 1:32 PM Page 76 INFINIT Y SYSTEMS INTERL UDE IL120S phase-reversal switch and a continuously variable lowpass filter that can be turned off if the subwoofer is used with a Dolby Digital/DTS surround processor-receiver. The IL120S’s sculpted front panel and grille are attractive, and the review sample was finished in “onyx-anigre,” which I take to be a term for a better class of fake wood. Listening Before trying to fine-tune the IL120S with R.A.B.O.S., I wan

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108-0111-Infin-p074-76,78x 1/24/02 1:32 PM Page 78 INFINIT Y SYSTEMS INTERL UDE IL120S every opportunity. I talked to whatever is making that ominous throb- Allan Devantier at Infinity bing sound—became tighter, not as boomy, about the meter’s battery- with less of a sense of prolonged resonance. eating habits, and he admit- The bass also seemed to go deeper. I initial- ted that the meter draws ly found the increase in apparent bass considerable current, but extension puzzling, in that the be