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Break-in Period
Allow several hours of listening time to adequately break-in your Impression Series
subwoofer. As your subwoofer breaks-in during the first few hours of listening, the driver
suspension will loosen. Following this initial break-in period, there will be an increase in
low-frequency response, improved definition, and increased clarity and detail.
Introduction
Impression Series Subwoofer 1 Owner’s Manual
Impression Series Subwoofers
Congratulations on your purchase of an Impression Series I-12 or I-12/e powered
subwoofer! Your subwoofer is the result of many years of research and development
dedicated to producing high quality products for home audio and home theater systems.
This owners manual contains features, setup recommendations and specifications for the
Impression Series I-12 and I-12/e powered subwoofers. It is recommended you thoroughly
read through the material contained in this manual before connecting your subwoofer.
Doing this will ensure you have a good understanding of how to setup your subwoofer
for optimum performance and allow it to provide you years of listening enjoyment.
I-12 subwoofer with grille. I-12/e subwoofer without grille.
To maintain your subwoofer’s appearance, we recommend carefully wiping it with a clean,
dampened soft cloth. To help clean dust from the grille cloth, we recommend using a
vacuum with a brush attachment.
Care and Cleaning
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Features
Your Impression Series subwoofer is the result of many years of research and development
aimed precisely at surpassing the competition’s offerings (even at higher price points)
and it is absolutely stunning, both audibly and visually.
The subwoofer driver features RBH’s proven, proprietary aluminum cone technology and
adds considerable deep bass performance to your home theater or audio system. The
aluminum cone helps the subwoofer deliver extraordinary amounts of accurate, uncompressed, high-fidelity bass with power handling far beyond traditional cone materials;
this is due to aluminum’s natural heatsink capabilities, which helps to draw heat away
from critical components.
The I-12 powered subwoofer is designed to redefine the way you experience (and listen
to) bass. The I-12 features a powerful 350 Watt RMS amplifier to help deliver unearthly
amounts of deep, defined bass.
The I-12/e powered subwoofer is the Elite version of the Impression Series I-12, delivering
on all accounts. Designed specifically for those who just can’t get enough bass, the I-12/e
features an upgraded, powerful 500 Watt RMS amplifier delivering outrageous amounts of
profound, clear bass. The I-12/e’s 12-inch aluminum cone subwoofer is nimble enough to
respond quickly to changing dynamics in music, yet is strong enough to knock you back
squarely in your seat.
The Impression Series cabinet is constructed of ¾-inch medium density fiberboard. Because
of MDF’s inert properties, coloration of sound by the cabinet is significantly reduced.
Available in two high-gloss finishes, Black Ash or Red Burl, these subwoofers aren’t just
another black box subwoofer, they are visually stunning; a piece of fine furniture that
commands respect from its listeners.
Impression Series Subwoofer 2 Owner’s Manual
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Impression Series Subwoofer 3 Owner’s Manual
The subwoofer’s position in the room, the size of the room, and personal sound preference
will dictate which configuration is best for your particular situation.
The above frequency response graph shows the responses for the port configurations mentioned above.
Low Frequency Alignment Options
#1 Leave all 3 ports open
for maximum output
for 25Hz and above.
#2 Leave 2 ports open for
maximum low frequency
extension below 25Hz.
#3 Plug all ports for maximum
damping (least amount of
output below 30 Hz).
The I-12 and I-12/e subwoofers have a user-adjustable alignment with three, 3½-inch
ports and 3 included port plugs. You can configure the subwoofer alignment to maximum
output (3 open ports), maximum extension (2 open ports), or maximum damping (sealed).