LUIDSPREKERS > Staand > Infinity Modulus Loudspeaker and Subwoofer Systeem

Infinity Modulus Loudspeaker and Subwoofer Systeem

Beschrijving / Description

Infinity Modulus
Although it was first shown at the 1989 Chicago CES, the tiny Modulus didn't go into full production until earlier this year. Although it can be used in its own right, it is recommended for use as the basis for a full-range system when allied to Infinity's Modulus Subwoofer. Matching floor stands and wall-supports are available; the entire system has obviously been extremely well thought-out in terms of integration and ease of setup.

The Modulus subwoofer is an almost cubical unit finished in the same high-gloss finish as the satellites and resting on four "Iso-tip" conical feet. A single 12" drive-unit, fitted with an IMG cone and driven by an integral 250W amplifier, adorns one face, this normally being covered by a black cloth grille. One of the unit's vertical corners consists of the vertically ribbed heatsink fins for the power amplifier; these got hot only under sustained drive with music having a large amount of sub-100Hz information, like organ music!

As with Infinity's IRS subwoofers, the Modulus drive-unit is servo-controlled, both to minimize distortion and to flatten and extend the system's response below its natural resonance. The woofer's drive signal is supplied to the unit via a long cable fitted with 5-pin DIN plugs on both ends. One plug fits into the base of the subwoofer next to its on/off switch, the other into the control unit, which can be sited near the system preamplifier. The control unit takes the stereo outputs from the preamp, passively high-pass filters them with an array of 0.22uF series capacitors the exact number of capacitors in circuit depends on the power amplifier's input impedance and sends the equalized signals to the power amplifiers used to drive the satellites.

It also combines the channels, low-pass filters the resultant mono signal, and sends that signal to the subwoofer. The high-pass capacitor configuration is adjusted by means of two DIP-switch arrays on the rear panel; the low-pass crossover frequency, subwoofer level, and phase (continuously variable from 0 to 180) are adjusted with front-panel rotary knobs. A switch allows the user to choose between extension to 22Hz (-3dB) or 35Hz, the latter being useful in problem rooms or with sources having excessive rumble. When the subwoofer is on but the control unit off, the unit goes into standby mode, this indicated by a red LED under the grille lighting.

Both satellites and subwoofer come with comprehensive Owner's Manuals covering all aspects of setup and use and offering good advice on where to site the units within the room to get the optimum sound. Would that all loudspeakers were as well served in this respect.




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Specificaties / Specifications

Infinity Modulus Loudspeakers:
Two-way, sealed-box, stand-mounted loudspeaker.
Drive-units: 2.125" by 0.5" EMIT-k ribbon tweeter, 5.5" (140mm) IMG (Injection-Molded Graphite) cone woofer.
Crossover frequency: 4kHz.
Crossover slopes: 4th-order, 24dB/octave, Linkwitz-Reilly.
Frequency response: 80Hz-45kHz +/-2dB.
Sensitivity: 84dB/W/m (2.83V).
Nominal impedance: 5 ohms.
Amplifier requirements: 50-200W.
Dimensions: 12" (305mm) H by 7" (178mm) W by 10.625" (270mm) D.
Weight: 12 lbs (5.5kg) each.

Infinity Modulus Subwoofer:
Sealed-box, servo-controlled subwoofer with integral 250W amplifier and separate control unit.
Drive-units: 12" IMG (Injection-Molded Graphite) cone woofer.
Crossover frequency: 140Hz, high-pass; adjustable from 40Hz to 210Hz, low-pass.
Crossover slopes: 1st-order, high-pass, 6dB/octave; second-order, low-pass, 12dB/octave.
Bass extension (-3dB): selectable, 22Hz or 35Hz.
Dimensions: 19" (483mm) H by 17.5" (444.5mm) W by 17.5" (444.5mm) D, subwoofer; 7.25" (184mm) by W 2" (51mm) H by 5" (127mm) D, control unit.
Weight: approximately 75 lbs (34kg), subwoofer.

Staat van artikel
Tweedehands

Prijs
€ 1.590,00 (per set)