Line-level Connection

Figure 1 shows connection to a pre-amplifier's main outputs and returning them to your amplifier inputs.

When installed in this fashion, your satellite speakers will be crossed over at 80/100Hz which removes the lower bass from your amplifier and speakers, enabling them to do a better job reproducing high frequencies. By utilizing this method, you will have a bi-amplified system, gaining improved power and headroom for your system.

Figure 1: Installation using line-level (RCA/Phono jack) inputs

	TO SATELLITE
	SPEAKERS
	MAIN
	INPUTS
MAIN	RIGHT LEFT
MAIN
OUTPUTS
RIGHT LEFT

AMPLIFIER

PRE-AMP

MAIN OUTPUTS

RIGHT LEFT

Subwooferoutputs

Your DLS subwoofer is designed to operate using the full range audio signal for input when using the built-in crossover. Many home theater processors/receivers (Dolby Digital, DTS, THX) have a "subwoofer out" jack that is internally filtered and designed to be used with a powered subwoofer.

In these installations, you may bypass the internal crossover in either the processor or your DLS subwoofer. In some installations, it may be beneficial to have a steeper ultimate crossover slope. To do this you can use both your processor's crossover and the one internal to the DLS subwoofer. You should stagger the frequencies (i.e., 120Hz sub, 80Hz 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 switch marked "SUBWOOFER DIRECT/INTERNAL X-OVER"on the rear panel of the subwoofer and set to the "SUBWOOFER 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 channel input signal (such as a surround sound processor's subwoofer out, or LFE), the auto on/off circuit sensitivity will be affected. When one input channel is used instead of two, the unit will see lower signal levels present at the inputs. This may cause the unit to turn off when listening at low volume levels. If this occurs, simply use a "Y" adapter (available from most dealers) to allow your processor's single sub line to be fed into both L&R inputs. This will make the unit turn on at lower signal levels.

Speaker-level Connection

Figure 2 shows an easy way to connect your DLS 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, 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.

continued. . .

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DLS-3500, DLS-4000, DLS-3750 specifications

Velodyne Acoustics, renowned for its commitment to high-performance audio solutions, has developed a lineup of sophisticated subwoofers that stand out for their exceptional sound quality and innovative technologies. Among these models are the DLS-3750, DLS-4000, and DLS-3500, each designed to cater to different listening preferences while maintaining the brand’s hallmark of excellence.

The DLS-3750 is engineered for those who desire robust bass in a compact package. This model features a 12-inch driver combined with a built-in amplifier that delivers an impressive 375 watts of continuous power and peaks up to 750 watts. One of the standout technologies in the DLS-3750 is its digital signal processing, which ensures precise control over the frequencies and optimizes performance to minimize distortion. The adjustable crossover and phase control further allow users to tailor the output to best suit their specific acoustical environment.

Moving up the lineup, the DLS-4000 provides an even more powerful option with a 12-inch driver and a peak power output that reaches 1000 watts. The DLS-4000 integrates the same advanced DSP technology as the 3750 but enhances it with an upgraded enclosure design that improves resonance control. This results in a richer bass experience with greater depth and clarity, making it ideal for both home theater enthusiasts and audiophiles who demand high fidelity in their sound reproduction. Its user-friendly interface allows for seamless integration with existing audio systems.

Lastly, the DLS-3500, with its 10-inch driver, is tailored for listeners who may have space constraints but still desire quality high-performance bass. Despite its smaller footprint, the DLS-3500 doesn’t compromise on power, delivering a peak performance of up to 700 watts. It features adjustable tuning options to help achieve an optimal sound tailored to the specific acoustic characteristics of any room. The DLS-3500 also utilizes advanced driver materials that deliver more accurate sound reproduction throughout the low-frequency range.

In summary, the Velodyne Acoustics DLS subwoofer series exemplifies cutting-edge design and engineering. With their powerful amplification, innovative DSP technology, and customizable sound features, the DLS-3750, DLS-4000, and DLS-3500 provide compelling options for consumers seeking to elevate their audio experience. Each model, while differing in specifications, shares the core values of performance and reliability that Velodyne is known for, making them exceptional choices for a variety of audio enthusiasts.

Velodyne Acoustics DLS-3750 Line-level Connection, Speaker-level Connection, Subwooferoutputs

Models: DLS-3500 DLS-4000 DLS-3750