Alpha PS1 Powered Speakers: The PSB Alpha PS1 Power Speakers combine
PSB's most popular Alpha Series speaker design with a built-in amplifier to make
a versatile desktop solution with enough acoustic output for a small to medium
sized room. The Alpha PS1 Powered Speakers are true hi-fi speakers engineered to
upgrade today's audio and desktop listening experiences. Benefiting from forty
years of proven acoustic excellence, these speakers use highly efficient
amplifiers and state-of-the-art circuitry to create a powerful full-range
system, transforming your favorite audio files into desktop concert.
True-to-Nature Sound: The Alpha PS1 Powered Speakers are engineered
for the true-to-nature sound for which PSB is known. Many small speakers employ
tricks like exaggerating the treble or falsely boosting bass to overcome
limitations and poor performance, but not so with the Alpha PS1. Using sound
research and exhaustive testing at Canada's National Research Council in the
nation's capital of Ottawa, the PSB team has designed the Alpha PS1 with
extremely smooth and refined sound. You'll be pleasantly surprised by its output
capability and solid tuneful bass response compared to that of the Alpha PS1's
diminutive size. The response off to the sides of the speaker has the same
smooth response as the sound directly in front, making the Alpha PS1s
acoustically "disappear" by projecting a large and exquisitely detailed sound
Two-Way Speaker Design: Each PSB Alpha PS1 Powered Speaker houses a
0.75" aluminum dome tweeter and a 3.5" metalized polypropylene cone woofer with
a rubber surround and
oversized magnet structure. The tweeters utilize an acoustical waveguide to
deliver, more even high frequency response. The polypropylene woofers provide
accurate, detailed midrange/midbass.
Digital Amplifier: The Alpha PS1 Powered Speakers are powered by highly efficient 20-watt x 2-channel RMS (40W x 2ch Peak) Class D amplifier
which is built into the left speaker.
Bass Reflex Enclosure: The Alpha PS1 Powered Speakers feature an
acoustically engineered ABS cabinet with UV coating. This bass reflex enclosure features a tuned
slot port on the rear of the cabinet which extends low bass response.
Rear-Mount Volume Control: The PSB Alpha PS1 Power Speaker
(Left) features a rear-mounted rotary volume control.
Analog Inputs: The PSB Alpha PS1 Power Speaker (Left) is fitted with a
stereo RCA input and stereo minijack (3.5mm) input to connect an external audio
source; such as your MP3 player, smartphone, tablet, laptop, computer, or TV.
Subwoofer Output: For those dynamic lows, a subwoofer output
(mono-RCA) on the rear-panel of the left speaker allows you to
connect a powered subwoofer.
USB Charging Port: The Alpha PS1 Powered Speaker (Left) is equipped with a USB
(type-A) power port to charge your USB-enabled device; such as your smartphone
or tablet. The USB charging port is rated at 5V/500mA.
AC Power Supply: The Alpha PS1 Powered Speakers operate off of
standard household AC current using the supplied universal power supply. The AC
power adapter plugs into the left speaker, while the 6.5' PowerLink cable connects
power to the right speaker.
Optional Speaker Stands: The PTB-1 tilt base (760PTB1,
sold separately) is designed specifically for PSB's Alpha PS1 powered speakers.
You can mount the PTB-1 to the Alpha PS1 to angle the speakers upward or flat
for bettering stereo imaging, based on speaker placement. Two bases are
included. Each base mounts to the bottom of the speaker using four machine
screws. Each base also includes four self-adhesive rubber pads to provide safe
and secure placement of your speaker.
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