Velodyne DLS-R Series Manuel d'utilisateur télécharger pdf (Page 5)

A Word About Your Receiver’s Crossover and the

DLS-R Crossover

Your Velodyne DLS-R subwoofer is designed to operate using the

full range audio signal for input when using the built-in crossover

(controlled by the dial on the back panel). Many home theater

processors/receivers (Dolby Digital

, DTS

, THX

) have a “subwoofer

out” jack that performs this same function and are designed to be

used with a powered subwoofer.

In these installations, you may want to bypass the crossover in either

the processor or the Velodyne subwoofer. In some cases, you may

want to use BOTH crossovers. To do this, you can use both your

processor’s crossover and the one internal to the Velodyne sub.

You should stagger the frequencies (i.e., 120 Hz subwoofer, 80 Hz

processor) for best results.

To bypass the subwoofer’s internal crossover when the unit is being

fed a low pass signal from another crossover, simply locate the

knob marked “LOW-PASS CROSSOVER” on the rear panel of the

subwoofer and turn it counterclockwise to the “DIRECT” position.

This will eliminate the internal crossover from the signal path.

Note: If not using an external crossover, you should use the built-in

crossover for optimal performance. When using a single RCA sub

out from the processor, it does not matter which line level input (L/R)

is used.

Interconnect Cables

When installing your new Velodyne subwoofer using the line-level

connections, you should always use shielded phono cables. There

are many decent cables available today, most any of which will work

perfectly well. We do recommend that you keep the length of cable

as short as possible to avoid any potential noise problems.

When using speaker level connections, use a quality speaker cable

that mates well with the connectors (at least 14-gauge). Be very

careful to avoid any loose or frayed strands that could result in a short,

causing a dangerous condition and possible damage to your unit.

Cables of extremely large size are typically not required. Extremely

large gauge wire may not properly ﬁt in the binding posts, resulting

in a poor connection and possible short circuits.

Placement

True subwoofers operate at extremely low frequencies, which

are primarily omni-directional. While it is recommended that the

subwoofers be placed on the same plane as the satellite speakers,

room and system conditions often dictate otherwise. Keep in mind

that frequency response and output level can be drastically inﬂuenced

by placement, depending on the acoustic properties of your listening

room. Typically, the optimum location for a subwoofer is in a front

corner of your listening room. This location will usually offer the

greatest output levels and optimum low frequency extension. The

worst location for a subwoofer is typically far away from any walls,

close to the center of your room and near an opening or door way.

Avoid these locations when possible. When using a pair of Velodyne

subwoofers in stereo, it is preferable to place each subwoofer near

the satellite of the same channel. Typically, a minimum distance of

1 to 2 feet from your TV to the subwoofer will be adequate to avoid

any magnetic interference.

Caution!

This subwoofer has electronics built into the cabinet. Do not place the

cabinet next to sources of heat such as furnace registers, radiators,

etc. Do not place the unit near sources of excessive moisture, such

as evaporative coolers, humidiﬁers, etc. The power cord should

be routed in such a way that it will not be walked on, pinched, or

compressed in any way that could result in damaging the insulation

or wire.

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Velodyne DLS-R Series Manuel d'utilisateur Page 5

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