Velodyne Deco - Manual (Page 7)

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Center Channel Satellite Speaker
The center channel speaker (see Figure 1 item A) should be located directly above
or below your monitor or screen. It is generally best to have the height of the
three front speakers be about the same as the listener’s ears. Often this is not
practical since the top of your monitor or screen may be higher than your ears. In
this case, the center channel should be aimed down slightly or be placed below
the monitor or screen and angled slightly upward (see Figure 2 below).
Front Left and Right Satellite Speakers
The front left and right speakers (see Figure 1 item B on previous page) should be
about six to ten feet apart as shown in Figure 1. Larger spacing is allowable, but
the sound may become disassociated from the video being screened. If the speakers
are widely separated, aim the speakers inward toward the center of the listening
position.
TROUBLESHOOTING THE DECO 8 SUBWOOFER
The DECO 8 Subwoofer has been designed by innovative, dedicated engineers at
Velodyne. If you should experience a problem with the operation of the subwoofer,
contact the dealer where you purchased this system or a Velodyne customer
service representative.
Protection Circuits
The subwoofer is equipped with special protection circuitry to provide maximum
performance with the greatest reliability.
The subwoofer is protected against:
1) Overdriving the speaker or amplifier (DDCS-Dynamic Driver Control
System and Anti-clipping)
2) Overheating the amplifier (thermal protection)
3) Excessive drop in power line voltage (undervoltage protection)
The “DDC” Protection circuit #1 continuously monitors the input signal and the
demands placed on the subwoofer. This circuit automatically functions to protect
the driver or amplifier from being overdriven and producing large amounts of
distortion. This circuit is not audible while in operation and the level of protection
is completely automatic.
Protection circuit #2 will shut down the amplifier if it overheats (i.e. some extreme
conditions, such as sustained high output levels). No sound will be produced until
the amplifier cools to a normal “safe” temperature. If the subwoofer should shut
down, reduce the volume setting or turn the unit master power switch to the
“OFF” position for a few minutes. This will allow the amplifier unit to cool down.
When the amplifier cools down, you may turn the master power switch back on (if
turned off) and normal operation should resume. Note: switching the master power
switch off is optional, but will speed cooling of the amplifier and the return to
normal operation.
Protection circuit #3 will shut the amplifier off if your power line voltage drops to
extremely low levels. Insufficient power line voltage will reduce the power output
capability of the amplifier. This may happen if you have too many devices plugged
into the same outlet or circuit, or in high demand conditions such as summer
months while air conditioners are running. The power amplifier built into this unit
is capable of producing extremely high output power levels if the rated power line
voltage (117 VAC) is stable. Consult your dealer or an electrician if uncertain
about the condition of your home electrical wiring.
Figure 2. Center channel foot mounting options
Option B
Large Foot
Small Foot
Above monitor foot mounting
Option A
Small Foot
Large Foot
Below monitor foot mounting