Aanalog and digital systems HT10ps, C12ps, HT12ps, C10ps User Manual

analog and digital systems

C10ps
C12ps
HT10ps
HT12ps

owner's manual

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table of contents

introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

about the a/d/s/ subwoofers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

system connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

power connection and power switch operation . . . . . . . . . . . . . . . . . . . . . . . . . .8

controls and connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

voltage conversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

in case of difficulty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

typical wiring diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

common specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

introduction

Congratulations, and thank you for purchasing an a/d/s/ powered subwoofer. The culmination of
years of acoustic research, these subwoofers are designed to flawlessly reproduce the lowest
octaves of music and to add incredible impact and realism to movie soundtracks, while perfectly
complimenting a/d/s C-series and H-series loudspeakers. Please read this manual carefully to fully
understand and maximize the performance of your a/d/s system, and to enjoy years of superb
musical and home theater sound reproduction.

Be sure to save your sales receipt. It is your best record of the date of purchase, which is required
for warranty service.

Read and follow all cautions, warnings and notes.

cautions

WARNING
To reduce the risk of electric shock, do not remove any parts of the speaker. There are no user
serviceable parts inside. If service is required have it performed by a qualified service
professional.

WARNING
To help prevent electric shock, connect the speaker using the power cable into properly
grounded electrical outlets. These cables are equipped with 3-prong plugs to help ensure proper
grounding. Do not use adapter plugs or remove the grounding prong from a cable.

WARNING
To help prevent fire or shock hazard, do not expose the speakers to rain or submerge in water.
The speakers should be situated away from heat sources such as radiators, heat registers, stoves
or other heat sources. Be sure all the components in the system are turned off while making
audio and power connections.

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about the a/d/s/ subwoofers

This manual covers four a/d/s/ powered subwoofer models. The C10ps and the C12ps use 10 and 12-inch
subwoofers in sealed enclosures. The HT10ps and the HT12ps also use 10 and 12-inch drivers respectively,
and feature precision-tuned bandpass enclosures for enhanced low-frequency performance. The C-series
subwoofers have an attractive black matte finish that blends well into most decors. The HT-series
subwoofers feature a black wood grain furniture grade finish.

These subwoofers are designed to be used with in-wall, bookshelf, or miniature satellite loudspeakers,
extending the bass response of the system by an octave or more. The crossovers in the subwoofers can
relieve the satellite speakers of the demand of reproducing the deep bass portion of the sound range. The
combination of an a/d/s/ subwoofer and high-quality full range speakers produces a system that has the
bass response and output level of much larger loudspeakers, in a compact, easy to place format.

The subwoofers can be driven by either preamp level or speaker level input signals. They can be connected
to nearly any audio system.

The amplifiers in these subwoofers are capable of producing very high peak current levels. Sophisticated
protection circuitry protects the amplifier and woofer if the subwoofer is operated in a manner that might
cause damage. In addition, the amplifiers feature an array of controls that make it easy to adjust the
subwoofer so it integrates seamlessly with the main speakers in the system.

The HT-series a/d/s/ subwoofer cabinets have a sophisticated tuned bandpass design. The speaker in the
cabinet is mounted between two chambers. One chamber is sealed. The other is vented through special
high flow tuned vents to the rear of the cabinet. This computer optimized hybrid design gives the
transient response of a simple sealed box system with the efficiency and power handling of a vented box
design. The result is clean and dynamic bass at all listening levels.

The speakers in the a/d/s/ subwoofers have an oxygen-free copper wire voice coil wound on a Kapton
former for maximum efficiency and fidelity. The cones are acoustically inert and capable of moving large
volumes of air without flexing or bending.

unpacking

These subwoofers are fairly heavy. Rather than lifting the unit out of the shipping carton, turn the open
carton over and lift it off of the subwoofer.

Set the carton on a carpeted floor (or a large pad) with the top up and open. Hold the top flaps down
against the outside of the carton. Carefully tip the carton onto its side and then onto the open top of the
carton. Hold the inner packing material in place while turning the carton over to prevent the subwoofer
from slipping out of the carton. Lift the carton off of the subwoofer. Remove the inner packing material.
Then gently turn the subwoofer over onto the base. Save the shipping carton and inner packing material
for future use. Moving or shipping the subwoofer in anything other than the factory carton can result in
costly damage, which is not covered by the warranty.

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placement

Unlike higher frequency sound, our ears have difficulty locating the source of deep bass sound.
Consequently, you have a fair amount of flexibility in where you place the subwoofer in your listening
room. We recommend placing the subwoofer at the same end of the room as the main speakers. Avoid
placing the subwoofer close to the main listening area or behind it.

The HT-series Subwoofer should be placed so its back is at least three inches away from the wall behind
it and all adjacent furniture a drapery. This is necessary for three reasons. First, it allows the bass sound
coming out of the ports to spread freely into the room. Second, it allows the amplifier to radiate the heat
generated by normal operation. Third, it allows clearance for the cable connected to the subwoofer.

Included with the C-series subwoofers are a set of four spiked feet. Using these spiked feet will stabilize
the subwoofer placement and may tighten up the subwoofer's sound. There are threaded inserts in the
bottom of the cabinet for these spiked feet.

The sound quality of your a/d/s/ subwoofer and how its sound blends with the main speakers is affected
by its location in the room and the settings of the rear panel controls. The bass output level of the
subwoofer is greatly affected by its placement in the room. As a general rule the level will increase as the
subwoofer is moved closer to the boundaries (the walls and corners) of the room. Corner placement will
produce the strongest bass and in some instances the smoothest response. Experiment with a variety of
placements that are practical and domestically acceptable. Try adjusting the settings of the subwoofer
phase and subwoofer volume controls in each room location you try. The goal is a combination of
placement and control settings that produces smooth solid bass that blends seamlessly with the main
speakers.

One trick for achieving the desired bass performance in a given room is to locate the subwoofer at your
normal seating/listening location. Then walk around the room while the system is playing. Look for a spot
in the room that is suitable for the subwoofer and where the bass sounds the best to you. If you then
place the subwoofer at that location, the bass response at your normal seating position will be the same.

Another consideration when selecting a location for the subwoofer is required audio signal and power
wiring connections. Because long cable runs can degrade a sound signal, the subwoofer should not be
too far away from the other components of the system. Plan for routing the connecting cables where they
won't be stepped on or crushed.

The powerful bass sound energy produce by the a/d/s/ subwoofers can cause objects to vibrate or rattle.
Setting a compact disc player on the subwoofer may result in tracking problems or data errors. Purely
electronic equipment, such as amplifiers or receivers are not likely to be affected by the subwoofer. Never
set up a turntable near the subwoofer. This can produce severe acoustic feedback.