PSB Speakers CHS212 III. Warranty Registration, Unpacking, IV. Cabinet Care, Grilles and Ports

CHS212 (CustomSound™ Series)

The CHS212 is a custom installation subwoofer counterpart to our highly regarded SubSonic 10. Many high end home theater systems have most of their components, including the speaker, hidden away in cabinets. While this hides the clutter it can be detrimental to performance unless the effects of the equipment cabinet are taken into account. The same high power/high travel 12” woofers are used with the same 500 watt continuous, 750 watt peak amplifier. The cabinet has been optimized for in-cabinet use.

The cabinet is much simpler than that of the SS10 with no extra cosmetic details that would be wasted when built into another cabinet. A tough texture paint cabinet is used with dimensions chosen to fit within most equipment cabinets. One 12” unit is front firing while the second unit is mounted on the bottom of the cabinet and is down firing. This assures that both the drivers and the two port tubes are all tightly clustered and that all bass energy will have no problem exiting the equipment cabinet.

Whichever PSB subwoofer you have chosen, we hope that you appreciate the attention to detail that has gone into its design and, of course, that you enjoy using it. Please take the time to read the following sections about the placement of your subwoofer, and its connections and adjustments.

III. Warranty Registration

We recommend you take a few moments now to register your warranty, preferably on-line at psbspeakers.com/w/Warranty.html or via the enclosed registration form so that we will be able to serve you better in the future.

Unpacking

The packing materials of your PSB Platinum Series speakers are designed to protect them from damage during shipping. Retain the packaging in case the need arises to transport the speakers in the future.

IV. Cabinet Care

Cabinets have varying materials and finishes, including wood veneers and painted cast anodized aluminum parts. They should be treated as you would any fine furniture with similar finishes. Dust lightly with a soft cloth; avoiding abrasives. If necessary, wipe carefully with a cloth slightly dampened with glass cleaner to remove heavy soil.

Grilles and Ports

A lint brush does a good job of cleaning grilles. Grilles can be taken off and vacuumed if you prefer. If need be, you can use a lint brush to clean ports. Avoid touching speaker diaphragms.

V.Room Acoustics, Speaker Placement, Multiple Subwoofers and Setting Controls

Room Acoustics

If you are critical about low-frequency response, there's quite a bit of useful experimentation you can do, especially in combination with the crossover, level, and phase controls of our subwoofers.

Since the earliest days of high fidelity, one of the main challenges for the designers of speakers, and of their users, has been management of the lowest frequencies—the deep bass. Many of the most notable developments in speaker design have been made with a view to getting more bass output from smaller boxes.

One consideration is the size of the listening room. The larger the volume of air a speaker must excite, the more acoustic output you will require from it to achieve the sound levels you want. In any environment, sounds attenuate as you move farther away from their source, but in smaller rooms that tends to be offset by reinforcement from wall reflections. The larger the space is, the farther the sound has to travel both to reach the reflecting surfaces and then to get to your ears, which means it has to be louder to begin with.

With traditional full-range speakers, that involves an intricate matching act between amplifier power, speaker sensitivity, impedance and power handling. But the bulk of the power goes to reproducing bass, so the use of powered subwoofers and separate midrange/treble satellites both allows you to be conservative in the amount of

6