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Overview: The PSB Speakers SubSeries 5i is a powered
subwoofer, featuring a front-firing 10" polypropylene cone woofer with
a rubber surround. The woofer is driven by a 150-watt RMS (225 watts dynamic,
450 watts peak), Class H/BASH amplifier.
The SubSeries 5i has two front-firing 2" ports, a textured black
ash vinyl finish, and a removable black cloth grille. The subwoofer is
magnetically shielded, so it can be placed near CRT-type TVs without causing
Auto Power Mode: The subwoofer features a main power
switch on the back panel. When switched to On, the subwoofer is initially in
stand-by mode, awaiting the presence of an audio signal. When the signal is
received, the subwoofer turns on automatically. When no signal is detected, the sub's amp
will automatically turn off after approximately 15 minutes. In the Off position, the
subwoofer will not power up. A green LED, located on the front panel between the
control knobs, will glow when the
subwoofer is active.
Control Knobs: Two rotary control knobs are provided on the
front of the subwoofer. One controls the output level of the subwoofer, relative
to the volume of the other speakers in the system. The other control adjusts the
high-frequency roll-off of signals sent to the subwoofer. The control is
continuously variable from 50 Hz to 150 Hz, and allows you to precisely match
the subwoofer's bass production with the main left and right stereo speakers.
Phase Control: The phase switch allows for the adjustment of
the phase of the subwoofer in relation to the speakers used in the system,
either 0 or 180 degrees.
Inputs: The SubSeries 5i can be connected by the following
- Low Level Input: Two gold-plated RCA jacks are provided for
connecting your receiver via the
low-level input. You can use a single RCA cable to connect the Subwoofer or
LFE (low frequency effects) Output from your receiver, preamplifier, or
integrated amp. Either the left or right channel inputs can be used. Since
most subwoofer/LFE outputs are filtered by most receivers/processors, the
subwoofer's variable low-pass filter is usually not required and should be
bypassed. This is done by placing the LFE input/Crossover Bypass switch to
the Active position. If your receiver or integrated amplifier has preamp
outputs, or if you are using a preamplifier without a designated
subwoofer/LFE output, the preferred connection is to use a stereo RCA cable
plugged into both left and right inputs. If the preamp outputs are
unfiltered, the subwoofer's internal crossover should be used and the LFE
input/Crossover Bypass switch placed in the "Off" position.
- Speaker Level In/Out: Two pairs of 5-way binding post
terminals (for left and right channel) are provided for connecting the sub
with speaker wire. The terminals will accept bare wire, spade lugs, pin
connectors, and single or dual banana plugs. The plastic inserts must first
be removed from the terminals before using banana plugs. Two additional
pairs of 5-way binding post terminals are provided to allow you to run
speaker wires from the subwoofer directly to the main speakers, eliminating
the need to run wires from the receiver or amplifier to the main speakers.
The high-level signal passes through the subwoofer and on to the main
Power Cord: The subwoofer has a removable power cord with an IEC
2-pronged connector. This allows you to use a third-party IEC-type power cord,