Velodyne Acoustics VA-1250X Subwoofer out from A/V Processor, Speaker-levelconnection, Inputs

output and increased noise. In these cases, to optimize your sub- woofer performance you should bypass the internal crossover in your Velodyne subwoofer.

To bypass the crossover within the subwoofer, simply locate the switch marked "normal/bypass" on the back panel of the subwoofer and set to the "bypass" position. This will eliminate the internal crossover function.

Note

If not using an external crossover, you should use the built-in crossover for optimal performance.

Subwoofer out from A/V

Processor

From the low pass output of your signal processor Install into right or left RCA line in connector in the back of the subwoofer or use a "Y" connector adapter into both right and left RCA line in connectors in the back of the subwoofer.

Speaker-level connection

Figure 2 shows an easy way to connect your VA-1250X subwoofer directly to your receiver or integrated amplifier.

When connected in this fashion, your satellite speakers will be crossed over at 80/100Hz, which removes the lower bass from your speakers thus, enabling them to do a better job reproducing high frequencies.

You may also connect your satellites directly to your receiver or amplifier along with the subwoofer if you wish to bypass the internal high-pass crossover.

Caution!

To avoid damage to your main amplifier, be sure to maintain correct polarity when making all connections. Red (positive) to red, and black (negative) to black. Be sure that all connections are tight, and that there are no loose strands or frayed wires.

continued. . .

Installation

Your new VA-1250X subwoofer system provides for a number of installation options. Read all the installation information below in order to determine which installation option is best for your system.

Remember to perform all installation procedures with system power turned off.

Inputs

Your new subwoofer is equipped with both speaker-level and line- level inputs. Use the LINE-IN jacks when connecting your sub- woofer to a pre-amp, signal processor, orsubwoofer output/LFE. The FROM AMPLIFIER jacks connect directly to the speaker outputs of a integrated amplifier or receiver. Your amplifier section will notice no additional loading effects when you use these inputs because of their high impedance.

Note

Do not use both LINE-IN and FROM AMPLIFIER inputs simulta- neously.

Volume control

This control allows you to balance the output from the subwoofer to the main speakers in your system. This control should be set to achieve similar volume level from both the main speakers and subwoofer.

Low-pass crossover

Both sets of inputs sum the left and right channels together and the resulting signal is passed through an adjustable low-pass crossover before being amplified. The crossover control allows you to adjust the upper limit of the subwoofer's frequency response from 40 to 120 Hz. The subwoofer's response will begin rolling off above the frequency you set this control to.

You should set the crossover frequency to obtain a smooth and seamless transition from the subwoofer to the main speakers in your system. If your main speakers are smaller units with limited low frequency output, you may wish to choose a higher frequency (such as 100-120Hz) than you would with larger speakers which have greater low frequency output. With larger speakers, you might start with this control set lower, such as 80Hz.

5 ☞ 2 ☞