About LOW Pass Crossovers | Velodyne Acoustics SC-600D, SC-600 IW

Rear Panel Connections — Detailed Explanation

The SC-600D amplifier is equipped with both speaker-level and line-level inputs. Use the RCA/Phono type “INPUT” jacks when connecting from a pre-amp, signal processor, or line-level crossover. The “SPEAKER LEVEL INPUT” jacks connect directly to the speaker outputs of an 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 the RCA/Phono “INPUT” connections and “SPEAKER LEVEL INPUT” connections simultaneously.

ABOUT LOW - PASS CROSSOVERS

All of the SC-600D amplifier 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 30 to 160 Hz. The subwoofer’s response will begin rolling off above the frequency you set this control to. The slope is 24 dB/octave.

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 with limited low frequency output, you may wish to choose a higher frequency (such as 100 -120 Hz) than you would with larger speakers which have greater low frequency output. The SC-600D amp’s crossover has a default of 80 Hz.

Most receivers and processors provide a menu option in which you can characterize main speakers as “large” or “small” speakers. This affects the bass signals passed to the main speakers. We recommend in most cases setting the main speakers to “small,” despite their size and frequency response characteristics, allowing all multi-channel bass and LFE signals to be passed to the SC-600D. This is because the powerful 400 watt SC-600D amp combined with the SC-600 subwoofer are more likely suited to low bass reproduction than your amp and main speaker. With the burden of low frequency reproduction relieved, your speakers will exhibit better performance, and your overall system performance will improve.

Disabling the Low - Pass Cr ossover (Subwoofer Dir ect)

If your receiver/processor provides a crossed-over signal to the subwoofer, you may want to bypass the SC-600D amp’s low-pass crossover. To do this, depress BOTH the Crossover UP and Crossover DOWN buttons simultaneously. The numeric LED will show --indicating that the low-pass crossover has been defeated. To reactivate the low-pass crossover, simply push the crossover UP or crossover DOWN buttons.

A WORD ABOUT YOUR HOME THEATER RECEIVER’S CROSSOVER AND THE SC - 600D AMPLIFIER’S CROSSOVER

Your Velodyne SC-600D amplifier is designed to operate using the full range audio signal for input when using the built-in crossover. Many home theater processors/receivers have a “subwoofer out” jack that performs this same function and are designed to be used with a powered subwoofer.

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SC-600D Amplifier User’s Manual

SC-600D, SC-600 IF/IC, SC-600 IW specifications

Velodyne Acoustics has long been synonymous with high-quality audio and innovative sound technology, and its latest offerings, the SC-600 IF/IC, SC-600 IW, and SC-600D speakers, further solidify this reputation. Designed to deliver immersive sound experiences across various listening environments, these speakers incorporate cutting-edge innovations that cater to both audiophiles and casual listeners alike.

The SC-600 IF/IC model is specifically engineered for in-ceiling applications. It boasts a 6.5-inch woven fiberglass woofer, which allows for deep, rich bass reproduction. Coupled with a 1-inch aluminum dome tweeter, the speaker delivers a balanced frequency response that highlights both highs and lows. The speaker's unique insulation ensures minimal sound leakage, providing an immersive home theater experience without disturbing adjacent rooms.

On the other hand, the SC-600 IW is designed for in-wall installations. Its slim profile means it can seamlessly integrate into any home decor while still producing exceptional sound clarity. The 6.5-inch woofer is specifically designed to reproduce rigorous sound dynamics, enhancing music and movie experiences. The SC-600 IW also features a high-performance crossover network, ensuring that the transition between the woofer and tweeter is smooth and natural. This model is ideal for those looking for a discreet audio solution without sacrificing sound quality.

Lastly, the SC-600D serves as the standout option in the lineup with its dual 6.5-inch woofers. This model is capable of delivering deeper bass and heightened volume levels, making it perfect for larger spaces or dedicated home theaters. With advanced digital signal processing, the SC-600D can adapt to various acoustic environments, ensuring optimal performance regardless of placement. Its robust construction also minimizes distortion, allowing for clarity and precision in playback.

All three models employ Velodyne's proprietary technologies, including high-efficiency drivers and advanced acoustic engineering, to ensure that they deliver an unparalleled listening experience. Furthermore, the easy-to-install design of these speakers caters to both DIY enthusiasts and professional installers, making them versatile options for any audio project.

In summary, the Velodyne Acoustics SC-600 series combines aesthetic appeal with top-notch technology. Whether for home theaters, music rooms, or whole-home audio solutions, these speakers promise to enhance the overall audio experience by marrying design with exceptional sound performance. The SC-600 IF/IC, SC-600 IW, and SC-600D represent the pinnacle of modern speaker design and sound engineering, catering to the diverse needs of audio enthusiasts everywhere.