Infinity Quantum 2 Brochure

Page 1

Yourears may not know the
difference between this and our
Quantum Line Source "

-until you hem-the price.

Where in the world can you hear
the revolutionary woofer with the dual
voice coil? Only in Infinity's Quantum
Series. Our Quantum Line Source
speaker reaches down to 18 Hz.

Here in its closest competitor,
the Quantum 2' it goes to 24 Hz, but
you get an extra 2 dB of efficiency.

And where will you find the
satiny-sounding Electromagnetic
Induction Tweeter (EMIT)? Only
in Infinity's Quantum Series.

The Quantum Line Source stacks
them four feet high. The slightly more

compact Quantum 2 uses the same
tweeters, but not quite so lavishly.

In between those extraordinary,
exclusive low and high drivers, both
QLS and Q2 use Infinity's high-
definition 1'/2-inch dome midrange
driver and transmission-line midbass
coupler.

You see, the same technology
that makes all previous speaker sys-
tems obsolete goes right through the
Quantum Series. That's what makes
Quantum 2 the closest rival to the
world's finest.

Page 2

What comes out of the
Dual-Drive bofer '" is
a new bass experience.
Everybody knew for years it
was impossible to get acceptable
efficiency, good transient response,
enough power, and extended bass
range out of any enclosure of reason
able size. So every speaker system
in the world represented a serious
compromise of one or more of those
desirable characteristics. Until...
William Watkins found the
solution to problems of the speaker's
fundamental resonance. back-EMF
and the resultant impedance peak.
He invented a woofer with two voice
coils. Right down where rising imped-
ance and falling response were inevi-
table before. his second voice coil
takes over. presenting a low impedance
path to the amplifier in the region of
resonance.

Now the speaker can make use
of the amplifier's power at low
frequencies. because back-EMF is
reduced. Now input rather than
inherent resonance can control the
cone. Now extended bass response
and accurate transient performance
can coexist beautifully.

Listen.

The bass driver that makes all
this happen is called the lnfinity~
Watkins Dual-Drive Woofer.M It is one
of the significant audio advances that
set Infinity's Quantum Series apart.

Infinity's EMIT is like
the sweetest of sopranos
without a trace

of temperament.

Working for years to perfect the
electrostatic tweeter for what became
our $4000 Servo Statik 1A speaker
system. we dreamed of creating the
magnetic counterpart of the electro»
stat. Without any of the same prob-
lems of breakdown or need for a

transformer. With the saute advant-
ages of a low-mass diaphragm driven
uniformly overall. lfonly
there were a magnet
powerful enough.

We finally found
our magnet, made with
the rare-earth material
Samarium Cobalt, four
to seven times more
powerful than the finest
alnico magnet.

And then we found we could
make a tweeter that was not only
easier to control than the electrostatic,
but also easier to listen to. With
admirable range and realism and
nearly perfect horizontal dispersion.

This new breed is named EMIT
Electromagnetic Induction Tweeter."
Audio technicians esteem it techni-
cally. Music-lovers love it instantly.

More than merelya
revolutionary woofer
and superlative
tweeters.

High-definition ll/z-inch dome
drivers reproduce the midrange in the
Quantum Series. And in the midbass
(200 to 600 Hz), where about half
of all musical fundamentals lie, we felt
it vital to provide our Quantum 2. like
our Quantum Line Source, with a
driver that could speak with absolute
accuracy. The answer is our meticu~
lous midbass coupler.

We at Infinity have strong feel.
ings and a goodly store of savvy about
phasing and crossover technology. The
finest fruits of our stubbornness and

ll,
\\

know-how are the startlingly lifelike
stereo imaging and depth that our
Quantum Series speakers produce.
Hear Quantum 2. Its resemblance
to Infinity's Quantum Line Source is
striking. Except around the price tag.

Quantumz Specifications

F rcqtmiry vapnnst';
24Hz-32KH2 : 3dB.
Horizontal dixpvrxinn:

2dB at " 60°, ZOKHz.
.Suggrslwd for mr' with amplifims of:
45 through 350 watts per channel RMS.
Nominal impedanrc:
4 ohms.
Drivers:
12" lnfinity»Watkins Dual-Drive Woofer.
4" midbass coupler, transmission-line
loaded.
Two 11/2" dome midrange. specially
treated.
Three EMlT tweeters.
Crussmtcr frrqm'nrirs:
200Hz, 600Hz. 4 KHz.
lelrolx:
Level for midhass coupler. midrange and
tweeters.
Variable crossover point for tweeter.
Dimensions (approx):
49"x18"x13" deep.
124cm x 46cm x 33cm deep.
Finish:
Oiled walnut veneer. Removable grille.
Wrigltl (approx):
138 lbs/63 kg (packed ).
li'nn'mlly.
Five years parts and labor. transferable.
(See complete warranty statement.)
Specifications and prices are subject to
change without notice.

Grace note:

Notice the offset mounting of
the grille. lt minimizes any chance
of the grille frame's interfering with
the dispersion of sound.

But we know some audiophiles
will want to remove the grille any-
way. So we have made it very easy
to lift off. and provided Quantum 2
with a handsome face of walnut veneer.

mflmity

We get you back to what its all about. Music.

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