Velodyne Acoustics SC-IW, SC-1250 Amplifier, SC-IF, SC-10, SC-8, SC-15 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 Setup ChecklistPower Switch Power LEDRemote Eye LED Numeric IndicatorVolume Control Mic InputMono 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 Using the SC 1250 to Drive Two Subwoofers A g eRemote Contr ol W . v e l o d y n e . c o m Musical Style Suggested Preset Care of your Amplifier and Subwoofer Restoring DefaultsThank 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
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SC-15, SC-IF, SC-12, SC-IC Subwoofers, SC-1250 Amplifier specifications

Velodyne Acoustics has long been a leader in high-performance audio products, and their SC-IW model continues this tradition by delivering an exceptional listening experience through innovative technology and superior craftsmanship. The SC-IW, short for "Subwoofer In-Wall," is engineered to provide deep, powerful bass while seamlessly integrating into any home or commercial environment.

One of the standout features of the SC-IW is its unique design, which allows the subwoofer to be installed directly into the wall. This in-wall configuration not only saves valuable floor space but also helps to minimize clutter in a room, creating a cleaner and more aesthetically pleasing environment. The subwoofer's robust construction ensures durability while also providing excellent acoustic performance.

The SC-IW utilizes Velodyne's proprietary technology to deliver impressive sound quality. Its high-excursion driver provides enhanced bass response and ensures that low frequencies remain clear and punchy. Additionally, the subwoofer features a powerful built-in amplifier that delivers up to 300 watts of peak power, allowing it to produce room-filling sound without distortion, even at high volumes.

Another notable characteristic of the SC-IW is its user-friendly controls, which allow for easy adjustments to suit the acoustics of the room. The included adjustable low-pass filter lets users set the optimal frequency range for the subwoofer, ensuring that it blends seamlessly with existing speakers. Furthermore, the subwoofer has a variable phase control, allowing it to be fine-tuned to eliminate any phase cancellation and deliver cohesive sound.

The SC-IW also comes equipped with advanced connectivity options, making it compatible with a variety of audio systems. It features both line-level and speaker-level inputs, catering to different installation requirements and preferences. This flexibility ensures that the SC-IW can be easily integrated into any setup, whether it be a home theater or a multi-room audio system.

In conclusion, the Velodyne Acoustics SC-IW subwoofer combines cutting-edge technology, elegant design, and superior performance to redefine how audio is experienced in any setting. With its in-wall installation capability, robust construction, powerful amplification, and user-friendly features, the SC-IW is an ideal choice for audiophiles seeking uncompromising sound quality and aesthetic harmony in their listening environment.
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