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
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.
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).
Option A |
| Option B |
|
Large Foot | Small Foot | Small Foot | Large Foot |
|
| ||
Below monitor foot mounting |
| Above monitor foot mounting | |
Figure 2. Center channel foot mounting options
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.
|
