The Infinity
1001A is a cosmetic update of our already famous 1001. the 1001A has received a
new enclosure with a dramatically sculptured grill consisting of distinctive
knit fabric. The sonic features of this system remain unchanged. High Fidelity
Magazine said of the 1001, :the Infinity 1001 negotiated even the most
demanding orchestral material with ease, conveying a sense of excitement not
often experienced with systems in this price range."
The Tweeters
The Infinity
1001A utilizes two exceptional cone tweeters; one in the front (the transient
tweeter) and the other in the rear of the enclosure (the ambient tweeter). The
front (or transient) tweeter gives the direct radiation with its transient
information to yield sharpenss and clarity to the sound. The rear (on ambient)
tweeter adds complete dispersion of the high-frequency radiation to re-create
the true instrumental character actually in space, rather than in a flat plane.
The two tweeters are coupled together through a special phasing and frequency
contour network which maintains the energy response beyond 20 kHz without the
usual high-frequency beaming that imparts stridency to the music. This effect
can be had with the enclosures placed no more than an inch from the rear wall;
however, a more dramatic and realistic effect can be had with at least six
inches separation from the rear wall.
The Woofer
Another
unusual feature for this price system is the bass section. A specially designed
twelve inch woofer is utilized. The woofer itself undergoes two separate and
distinct treatments. Firstly, the soft paper cone is permeated with a
plasticizing agent which adds enormous stiffness to the cone. Secondly, thick
asbestos compound is applied to damp out
spurious modes produced by increasing the stiffness. Essentially all spurious
modes and resonances are thereby removed so that the speaker acts as a superb
piston even throughout the critical midrange area.
The treated
woofer is then utilized in our famous transmission line enclosure. This
enclosure design exhibits a very uniform impedance characteristic yielding
non-resonant bass with none of the familiar hangover of the acoustic suspension
designs.
Another
reason for the extremely natural quality of he Infinity 1001A is that no
inductors nor any other crossover network is used with the woofer. It was
designed with exactly the correct phase and frequency response characteristics
to meld smoothly into the tweeters.
Specifications:
Driver:
Bass
Frequency : one 12" (304 mm) Woofer
High
Frequency : two 1" (25 mm ) Dome
Tweeter
Frequency
Response: 33 Hz to 21 kHz ±4,5 dB
Crossover
Frequency: 1300 Hz (acoustic)
Nominal
Impedance: 8 ohms
Minimum
Amplifier Power: 20 watts/ channel RMS
Rear
Radiation: 50% above 1300 Hz
Dimesnions
(H x W x D): 635 x 368 x 304 mm
(25" x 14-1/2" x 12")
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