Subsonic 2 I
by Les Enser
Your body has
a gut wrenching sensation, your ears pop as if youve descended from
high altitude, the floor and walls vibrate as if shaken by an invisible
force. My goodness what has happened? Suddenly you fling yourself up in
a sitting position; youre awake now and realize youve discovered
deep bass. Wow!
How can I get
this kind of result in my audio system? Well look no further than PSBs
new family addition the Subsonic 2 I.
12" driver with foam surround along with a dual ported cabinet pumped
by a 130 watt RMS (300 watts peak) amplifier, you certainly get "what
it shakes". Add to that a low level input (RCA connection) which
is crossed over at 80 Hz, and you can fine tune your present speaker system
to sound like Godzilla.
If you dont
have preamp inputs on the back of your receiver, the feature that gives
you the luxury of taking advantage of the 80Hz crossover, dont despair:
PSB has also added a high level passive 100Hz crossover. Using this hookup
you need to feed your speaker wire out from the receiver to the high level
"in" to the sub. From there you take the speaker level "out"
from the subwoofer to your main left and right speakers. This allows any
frequencies lower than 100Hz to go to the Sub 2I and anything above to
your main speakers, so the "heavy" work is done by the subwoofer,
tending to take the strain off of your receiver.
main speakers can concentrate on the mid to higher frequency, again causing
them to work with less of a load. This is especially useful if your main
speakers are either a satellite or bookshelf type.
The point of
this exercise is to clean up the sound produced by the main speakers.
letting them concentrate on the frequencies they handle best.
When we put
the PSB subwoofer to the test we ended up using the speaker level connection
- since our reference receiver did not have the necessary inputs needed
to try the line connections. After a lot of experimenting to find the
"right sounding" location, we decided the bass output was the
most evenly distributed by placing the sub to the right of the left speaker
(also a PSB product in this case), about 12" away.
After a bit
of trial and error, we found the correct sub volume and crossover settings,
then we turned on our Laserdisc player (No DVD you say?) and spun a few
version of the original "Robocop," when Robo makes his first
appearance at the Precinct (chapter 24, side one), the Sub 2I convincingly
produced the sound of heavy machine like feet trouncing down the hallway.
At this point it sounded clean without the over emphasized thump that
you would hear from the average subwoofer. The scene in the Final Showdown
revealed the depth and impact the PSB could produce while the thugs use
their high tech, high powered rifles against our lonely hero.
Walker scene in "The Empire Strikes Back" is equally impressive:
our walls shook as if the technological giants where about to attack our
As for music,
the PSB added an extra dimension of depth that was missing from the normal
All in all we
found this product offered tight and controlled bass without the over
emphasized "boom". The key, of course, is patience and experimentation
when installing a subwoofer. Take the time to grab a partner and work
together for the optimum sound settings and sub location.
PSB is a serious
contender when it comes to getting into the heavy bass battle. The Subsonic
2i offers good value and will enhance most of the home theatres in cyber
If you want
a little more punch for the serious audiophile, we suggest checking out
Century Subsonic 2i Specifications (Manufacturer's figures)
On Axis @ 0° ±3 dB
LF Cutoff (-10 dB)
Discrete MOSFET Output Devices
Poly-coated Fiber Cone
with Foam Surround
1 1/2" Voice Coil, 28 oz Magnet
24 dB/octave Linkwitz-Riley
Low Pass Filter
Ported Bass Reflex
2 x 2" Front Port
Radiused Internally and Externally
1.67 cu ft (47.3 liter)
(W x H x D)
x 14.50" x 14.25"
489 x 368 x 382mm
40 lbs (18.2kg)/each
45 lbs (20.4kg)/pair
3-way Binding Posts,
Horizontal or Vertical, Feet
Level Input and Output
80Hz Active High Pass Filter
High/Speaker Level Input and Output
100Hz Passive High Pass Filter
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