SubContractor™ Series Amplifier / Subwoofers USER’S MANUAL S C - 1 2 5 0 A m p l i f i e r, SC-8, SC-10, SC-12, SC-15, S C - I W, S C - I F, S C - I C S u b w o o f e r s
Caution! . www.velodyne.
At t e n t i o n ! . www.velodyne.
Vo r s i c h t ! . www.velodyne.
At t e n z i o n e ! . www.velodyne.
Ta b l e o f C o n t e n t s Congratulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Product Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 – SC-1250 Subwoofer Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 – SC-8, SC-10, SC-12, SC-15, SC-IW, SC-IF Woofers . . . . . . . . . . . . . . . . . . . . . . . . .2 Installation . . . . . . . . .
Congratulations Congratulations on your purchase of a Velodyne SubContractor Series subwoofer. This system represents the state-of-the-art in low frequency reproduction. Read and follow the instructions below to insure safe and proper system operation. Warning! To prevent fire or shock hazard, do not expose this equipment to rain or moisture. To avoid electrical shock, do not open speaker enclosure or amp chassis cover. Please observe all warnings on the equipment itself.
S C - 8 , S C - 1 0 , S C - 1 2 , S C - 1 5 , S C - I W, S C - I F / I C S u b w o o f e r s SC-8: - 8” (6.5” piston diameter) subwoofer 2.
SC-IF/SC-IC (In-Floor/In-Ceiling): - 12” (9.7” piston diameter) subwoofer - 3” high temperature inside/outside voice coil - Oversized spider for linearity at high excursion - High-excursion EPDM rubber surround - 162 ounce magnet/346 ounce motor structure - Magnetically shielded for video use - Frequency Response: 22 - 120Hz (+/- 3 dB) - 8 ohm impedance I n s ta l l a t i o n Your new Velodyne amplifier provides for a number of installation options.
(5) Low-Pass Crossover Use these up and down buttons to select the high-frequency range at which you wish to cut off the signal to the subwoofer. The frequency is indicated on the LED display briefly, then the display reverts to showing the subwoofer’s volume. The slope is fixed at 24 dB/octave. To deactivate the crossover, press BOTH the up and down crossover buttons at the same time – two dashes on the display indicate the crossover is deactivated and the woofer plays all frequencies presented to it.
(9) Thru Jacks (See Figure 3A) These RCA connectors are for passing along the same signal that goes into your subwoofer to a second “daisy-chained” subwoofer. The signal from these RCA connectors is the same as the input signal. (10) Line Input / LFE Input (See Figure 3A & 3B) Connect these jacks to the LINE OUT preamp output, LFE output, or subwoofer output jacks of your receiver/processor.
Option 2 Figure 3B: Stereo Line-Level Connection. . www.velodyne.
(11) Balanced XLR LFE Input (See Figure 4) This XLR input jack receives the balanced LFE signal from your receiver or processor. Figure 4: Balanced Line-Level Connection. (12) Mic Input Connect the supplied microphone for the Auto-EQ feature to this mini-jack. (13) IR Input Connect an IR repeater to this jack for use with universal remote systems. (14) 12V Trigger When this mini jack is connected, the unit remains in power-off mode until 12 volts is supplied across the two leads. Polarity is irrelevant.
(16) Auto ON/OFF Switch Use this switch to select between auto-on active and auto-on inactive (constant on) operation. For maximum amplifier life, we recommend using the auto-on/off feature. (17) Speaker Level Output Terminals (See Figure 5) These connections send a crossed-over speaker-level signal to the front speakers. When connected in this fashion, your satellite speakers will be crossed over at 80 Hz.
(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.
You should set the crossover frequency to obtain a smooth and seamless transition from the subwoofer(s) 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 100-120 Hz) 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 80 Hz.
A Wor d About Subwoofer Placement Subwoofers operate at extremely low frequencies, which are primarily omni-directional. Keep in mind that frequency response and output level can be drastically influenced by placement, depending on the acoustic properties of the listening room. Typically, the optimum location for a subwoofer is in a front corner of your listening room. This location will usually offer the greatest output levels and optimum low frequency extension.
Usage This section addresses day-to-day usage of your SC-1250 amplifier. Remote Control The features of the SC-1250 remote control are listed below. • POWER — This button forces your SC-1250 unit into standby mode. The power LED turns amber, the numeric LED shuts off, and the amplifier puts out no power. The unit will remain in this mode until the POWER button is pressed again. To fully deactivate (i.e. power down) the unit, press the power switch on the front panel.
• PRESETS — There are 4 presets, consisting of Movies, R&B – Rock, Jazz – Classical, and Games. As a preset is chosen, the preset is shown on the numeric LED as P1 for preset 1, P2 for preset 2, etc. The presets provide the following characteristics for bass reproduction: Movies: Maximum output and impact for explosions and other action adventure movie content. R&B – Rock: Provides the driving bass found in today’s rock music. Jazz – Classical: The tightest, cleanest, lowest distortion bass.
Each preset has its own characteristics with respect to subsonic filter, volume differential and a single equalizer (EQ) in order to optimize the listening mode for the preset.
TROUBLESHOOTING AND SERVICE Before seeking service for your amplifier or subwoofer, please re-check all systems. Following is a simple troubleshooting guide to assist you. 1. 2. 3. 4. 5. Verify that the unit is plugged in and power outlet used is active. Is the power switch on? Is the unit receiving an input signal from your source? Have all controls on the amplifier (volume, crossover, phase, etc.
Specifications www.velodyne.
Appendix A: RS-232 Serial Overview and Commands Introduction This document outlines Velodyne’s SubContractor (SC) RS-232 protocol specification. This protocol indicates how SC products receive run-time commands from devices such as Creston Universal Remote Controls.
RS232 Commands .
Other Velodyne Subwoofer Products: 110V Digital Drive 1812 Signature Edition 230V MiniVee™ Digital Drive 1812 Signature Edition SMS™-1 DD Series DD-10 DD-12 DD-15 DD-18 DLS-R Series DLS-3500R DLS-3750R DLS-4000R DLS-5000R DPS Series DPS-10 DPS-12 . www.velodyne.
LIMITED WARRANTY VELODYNE ACOUSTICS, Inc. (“VELODYNE”) warrants all electronics and powered subwoofers for a period of two years and full range speakers for a period of five years. All VELODYNE products have a warranty from the date of purchase against defects in materials and workmanship subject to the following conditions: 1.
