Velodyne Acoustics SC-8 Subwoofers user manual About Low Pass Cr ossovers

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(18) Speaker Level Input Terminals (See Figure 5)

Connect these input terminals to the speaker output terminals of your amplifier or receiver. If you use this method of connection, when you go to the receiver speaker set up menu, make sure you select the “large” speaker option.

(19) Subwoofer Connection Terminals

Connect these output terminals to the subwoofer(s) being controlled by the SC-1250. Only connect ONE subwoofer per red/black pair of subwoofer output terminals - DO NOT connect the subwoofers in a “daisy chain” configuration.

Note: SC series subwoofers are designed so that TWO subwoofers can be driven from a single SC-1250 amplifier. If you are using the SC-1250 to power a non-SC subwoofer, make sure you check the resistance of the subwoofer’s voice coil. A SINGLE 4 ohm subwoofer can be driven with the SC-1250, but not TWO 4 ohm woofers. If you attempt to run more than a single 4 ohm subwoofer, internal protection circuitry will activate within the SC-1250.

Caution!!!

To avoid damage to your SC-1250, 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.

(20) Power Cord Adaptor

Connect the detachable 117V~60Hz 15A AC power plug to this male interface connection. The detachable cord allows for easy replacement should the original be damaged.

(21) Fuse

If the unit is not functioning, check the fuse. If the fuse is blown, replace with an identically rated fuse. If the fuse blows again, refer the unit for service.

(22) Master Power Switch

Press the POWER switch to the ON position to activate the amplifier. If the unit is to be left unused for an extended period of time, move this switch to the OFF position to prolong the life of the amplifier.

REAR PANEL CONNECTIONS – DETAILED EXPLANATION

The SC-1250 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 Cr ossovers

 

All of the SC-1250 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.

 

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SubContractor User’s Manual 9

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Contents SubContractor Series U t i o n At t e n t i o n Vo r s i ch t At t e n z i o n e Table of Contents SC 1250 Subwoofer Amplifier Product FeaturesPrior to Installation N g r a t u l a t i o n sSC 8, SC 10, SC 12, SC 15, SC IW, SC IF/IC Subwoofers S ta l l a t i o n Optional Rack Mount LED Numeric IndicatorVolume Control Low-Pass CrossoverMono LFE Line-Level Connection Line Input / LFE Input See a & 3BStereo Line-Level Connection Balanced XLR LFE Input See Figure IR Input14 12V Trigger Speaker Level Output Terminals See Figure Auto ON/OFF SwitchAbout Low Pass Cr ossovers Wor d About Inter connect Cables Disabling the Low Pass Cr ossover Subwoofer Dir ectWor d About Subwoofer Placement Selecting the Subwoofers to be ControlledModel LED Display Remote Contr ol A g eMusical Style Suggested Preset Differential Restoring DefaultsPreset Subsonic Filter Volume Frequency Care of your Amplifier and SubwooferThank You for Purchasing an SC-1250 Troubleshooting and SER ViceSpecifications Runtime Command Format Byte Number Byte Description Appendix a RS-232 Serial Overview and CommandsCom Por t Setup SC in and OUT Por t Pin ConfigurationW . v e l o d y n e . c o m Other Velodyne Subwoofer Products Digital DriveSignature Edition Velodyne Acoustics, Inc

SC-8 Subwoofers, SC-1250, SC-8, SC-10, SC-12, SC-15, SC-IW, SC-IF, SC-IC, SC-1250., SC-8, SC10, SC-12, SC-15, SC-IW, SC-IF, SC-IC specifications

Velodyne Acoustics has long been synonymous with superior subwoofer design, delivering high-performance audio solutions that cater to both audiophiles and casual listeners alike. The SC series, which includes models SC-1250, SC-8, SC-10, SC-12, SC-15, SC-IW, SC-IF, and SC-IC, exemplifies the company's commitment to innovation and sound quality.

The SC-1250 is a powerhouse subwoofer featuring a robust 12-inch driver that produces thunderous low frequencies, boasting an impressive frequency response that reaches down to 20 Hz. Its built-in amplifier delivers 1250 watts of peak power, ensuring that it can handle the dynamic range of any audio source. Smart connectivity options like auto-calibration help optimize sound performance based on room acoustics.

Moving on to the SC-8, this compact subwoofer is particularly suited for smaller spaces. Despite its size, it includes an 8-inch driver that is adept at producing deep bass without distortion, making it ideal for movies and music alike. With a sleek design and easy integration into various home theater systems, the SC-8 is a favorite among urban dwellers.

The SC-10 and SC-12 models provide a balance between size and power. The SC-10 features a 10-inch driver with a low-frequency range that enhances music and film experiences. Meanwhile, the SC-12, with its 12-inch driver, brings a more potent impact, ensuring that users feel the rumble of explosions or the depth of musical tracks. Both models incorporate Velodyne's patented DSP technology, which provides superior control over bass response and minimizes unwanted resonances.

For those seeking an even more powerful experience, the SC-15 delivers exceptional low-end extension with its larger driver. The combination of craftsmanship and technology makes it perfect for critical listening and immersive home theater experiences.

The SC-IW and SC-IF models focus on in-wall and in-floor installations, allowing for seamless integration with home decor while still delivering outstanding audio performance. The SC-IW features a unique enclosure that minimizes vibration, while the SC-IF is designed for easy installation without compromising sound quality.

Finally, the SC-IC model offers a unique in-ceiling subwoofer solution, providing flexibility for users looking to conserve floor space while achieving full-range sound capabilities. Each model in the SC series exemplifies Velodyne's dedication to audio fidelity, boasting features like adjustable crossovers, phase control, and multiple inputs for versatile connectivity.

In conclusion, the Velodyne Acoustics SC series showcases a range of subwoofers designed to meet varying audio demands, from compact options to powerful beasts, all while maintaining the quality and performance that the brand is known for. Whether for music or movies, these subwoofers deliver an audio experience that is both rich and satisfying.
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