SYSTEM 270
271 LR and
273 C Front Channel Speakers
The driver array of the
271 LR front channel and the 273 C center channel speakers have been matched
to provide a seamless transition between the critical front three channels.
The cones of the low-frequency
and midrange drivers use a new injection molded polymer graphite material
that exhibits outstanding linearity and low mass. These drivers, working
in conjunction with the very linear silk dome tweeter, provide outstanding
high fidelity reproduction. In addition, the tweeter is rigidly mounted
into a precisely machined aluminum sub-baffle to optimize its dispersion
and eliminate undesirable resonances.
The 273 C features three new
proprietary Multi-Stage Timbre Controls. They include a continuously variable
High Frequency Level control, a Midrange Presence compensation, and a
Boundary Effect compensation switch. They allow unmatched versatility
and perfect integration with the left and right front channel speakers.
The High frequency Level control
adjusts the high frequency output from the speaker, working similarly
to the treble tone control on a conventional preamp, amp or receiver.
This allows you to compensate for overly bright soundtracks or punch up
a dull soundtrack.
The Midrange Presence switch
compensates for the tendency of acoustically "dead" rooms to soften dialog
and midrange detail. Overstuffed furniture, thick carpeting and heavy
drapes all absorb sound, and midrange frequencies are absorbed the most
efficiently. The result can be hard-to-understand dialog and a dull sounding
frequency response. Atlantic's unique midrange presence compensation circuitry
incorporated in the crossover provides flat in-room response in almost
all situations. Should you have a "live" room, there is a bypass position
that may be used. 
The Boundary Effect switch
smoothes the midrange "hump" in the speaker's frequency response that
arises when you place a center channel speaker on top of a TV. The sound
that reflects off the TV screen causes this anomaly in the frequency response
that increases bass and muffles the midrange reproduction of the speaker.
Activating Atlantic's proprietary circuit corrects this problem and allows
much more accurate midrange response. Again, there is a bypass position
for applications where the speaker is not placed on top of a TV.
Finally, to further optimize
performance, the center channel is fitted with an adjustable base that
aims the speaker at the listening position.
274 SR Surround
Speakers
 The
274 SR surround speakers are timbre-matched to the front channel speakers
and optimized for use with all multi-channel digital surround formats.
They use an asymmetrically oriented dipolar configuration to create a
convincing sense of space and ambience. Two 4-1/2" injection molded polymer
graphite woofers and two 3/4" silk dome tweeters are mounted on adjacent
sides of each dipole cabinet. The driver arrays are phase inverted to
provide wide, spacious imaging while still maintaining distinct right
and left surround localization. The surround speakers can be easily mounted
on the wall, on a shelf, on a speaker stand, or recessed into a wall with
an optional kit.
272 PBM
Powered Subwoofer
 The
272 PBM powered subwoofer incorporates a specially designed 225 watt high
current all-discrete amplifier. It employs a 12" long throw driver with
a damped composite cone and an enormous motor assembly. The amplifier,
driver voice coil characteristics, and cabinet dimensions were optimized
to work together to provide deep, highly defined bass at very low frequencies.
The enclosure is a sealed, acoustic suspension design with very rigid
construction to prevent undesirable cabinet resonances. This subwoofer
features automatic standby operation (with bypass), an 18 dB/octave low-pass
filter, and high-pass inputs and outputs as well as line level inputs
and outputs. An absolute phase switch and front panel level control make
the 272 PBM very easy to use and set up.
The System 270 is finished
in black ash vinyl with optional steel speaker stands available. The surround
speakers are also available in a matte white finish with white speaker
stands as an option.
| SPECIFICATIONS |
271 LR |
273 C |
274 SR |
| Type |
Sealed-box, 2-way |
Sealed-box, 2-way |
Sealed-box, spatially-enhanced surround speaker |
| Drivers |
(2) 5-1/4" IMG woofers;
(1) 1" silk dome tweeter |
(2) 5-1/4" IMG woofers;
(1) 1" silk dome tweeter |
(2) 4-1/2" IMG woofers
(2) 3/4" silk dome tweeters |
| Frequency Response |
80Hz - 20kHz ± 3dB |
80Hz - 20kHz ± 3dB |
80Hz - 20kHz ± 3dB |
| Nominal Impedance |
8 Ohms |
8 Ohms |
8 Ohms |
| Crossover Frequency |
2.5 kHz |
2.5kHz |
3kHz |
| Sensitivity |
90dB |
90dB |
90dB |
| Power Rating |
10 - 150WRMS |
10 - 150WRMS |
10 - 150WRMS |
| Magnetic Shielding |
Yes |
Yes |
No |
| Size (W x H x D) |
6.85 x 14.4 x 7.9in; 174 x 366 x 200mm |
17.75 x 7.75 x 7.9in; 450 x 197 x200mm w/ base |
11.8 x 9.0 x 7.3in; 300 x 230 x 185cm |
| Weight (ea., unpacked) |
13lbs.; 5.9kg |
15lbs.; 6.81kg w/ base |
10.5lbs.; 4.76kg |
|
272
PBM
Type Sealed-box,
Powered Subwoofer
Driver 12"
high excursion cone woofer
Frequency
response 25Hz - 500Hz ±3dB
Output
Power 225 watts
Low
pass filter 55Hz to full bypass, 18dB/octave
Hi
pass filter 80Hz, 12dB/octave
Input impedance:
High
level (speaker) 10k(Ohms)
Low
level (line) 1k(Ohms)
Peak
SPL 105dB
Magnetic
Shielding Yes
Dimensions
(W x H x D) 15.75 x 21.50 x 18.5in; 400 x 470 x 500mm
Weight 62lbs.;
28.15kg
Power
requirements 110V AC 50/60Hz; 240 AC 50/60Hz
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