Velodyne Acoustics owner manual CONNECTING/CONFIGURING THE DECO 8 SUBWOOFER

system wiring diagram).

CONNECTING/CONFIGURING THE DECO 8 SUBWOOFER

Velodyne recommends using the line level inputs to connect the DECO 8 subwoofer to a preamp, signal processor or receiver with a “SUBWOOFER OUTPUT” for optimum performance in most home theater systems.

Velodyne has provided a high quality 16’ RCA Subwoofer cable to connect the subwoofer to your receiver, as illustrated in Figure 6 below. The cable should be inserted into the RCA input labeled “LFE IN” (Low Frequency Effects) on the amplifier panel. The other end of the cable should be inserted into the “SUBWOOFER OUTPUT” on the back of your receiver (see Figure 7 page 13 for typical use of the single RCA cable).

		SUBWOOFER
•	1200 WATTS DYNAMIC POWER	VOLUME
		MIN		MAX
•	600 WATTS RMS	POWER	ON	AUTO
•	HIGH-TEMP VOICE COIL			80 Hz
		setting
•	ULTRA-EFFICIENT E.R.S. CLASS D AMP	LOW-PASS
		CROSSOVER
•	ULTRA-LONG EXCURSION DRIVER	120 Hz		40 Hz
	POWER	INTERNAL		SUBWOOFER
		X-OVER		DIRECT
	ON	PHASE	0 0	180 0

R L

HIGH-PASS

OUTPUT

R L

INPUT

LFE IN

117~

60Hz

5A

WARNING: TO REDUCE THE RISK OF FIRE

OR ELECTRIC SHOCK. DO NOT EXPOSE

THIS APPLIANCE TO RAIN OR MOISTURE.

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

AVIS: RISQUE DE CHOC ELECTRIQUE-NE PAS OUVRIR

16’ RCA Cable

Figure 6. Diagram of RCA Cable on DECO 8 amplifier panel

Volume Control

The volume control allows you to balance the output from the subwoofer to the main speakers in the system. This control should be set to achieve a comfortable listening level of both the main speakers and the subwoofer, while listening to music. A good starting point for the volume control is at 3 or 4 dots from the “MIN” setting. The correct output level setting of the subwoofer should blend the subwoofer’s output smoothly with that of the satellite speakers. It should not be set to overpower them or be inaudible. Many home theater receivers have a “Test Tone” function that will play a noise/test signal of equal level through the speakers and subwoofer output, one at a time, to aid in balancing volume. Consult your receiver owner’s manual to see if this function is offered to aid in setup.

Low-Pass Crossover

The low-pass crossover control allows you to adjust the upper limit of the subwoofer’s frequency response from 40 to 120 Hz. Velodyne recommends that you set the DECO 8 subwoofer to the “DECO Setting” for optimal x-over point (see Figure 8 page 14) when you are using the DECO Satellites. This setting will prove a seamless transition between the subwoofer and satellites. If you use the DECO 8 Subwoofer with another satellite speaker system, you may need to adjust your crossover to provide the proper integration. Velodyne has also provided a bypass switch on the amplifier panel, if you wish to utilize the LFE output from your home theater receiver (see “Crossover Switch” section on Page 12).

Phase Switch

The phase switch control allows you to “reverse” the phase of the subwoofer’s output signal 180° to correct for a mismatch between the subwoofer and satellite speakers sound output. This could result from electrical differences in your equipment’s internal wiring, external wiring of satellite speakers relative to the subwoofer, or acoustic differences resulting from room placement (distance between subwoofer and front satellites). A mismatched system will result in cancellation of some sound output between the subwoofer and satellite speakers. To adjust the phase switch, remain seated in the “listening position” while someone moves the phase switch from the 0° position to the 180° position. Listen for an audible change in low-mid frequency output. The correct position will have a greater amount of apparent low-mid frequency output.

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