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™
SubContractor
Series
Amplifier /
Subwoofers
USER’S
MANUAL
SC-1250 Amplifier,
SC-8, SC-10, SC-12, SC-15,
SC-IW, SC-IF, SC-IC Subwoofers
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Caution! . www.v elodyne.com SubContractor User’s Manual I
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Attention! . www.v elodyne.com SubContractor User’s Manual II
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Vorsicht! . www.v elodyne.com SubContractor User’s Manual III
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Attenzione! . www.v elodyne.com SubContractor User’s Manual IV
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Table of Contents 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 . . . . . . . .
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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. There are no user servi
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SC-8, SC-10, SC-12, SC-15, SC-IW, SC-IF/IC Subwoofers S C-8: - 8” (6.5” piston diameter) subwoofer - 2.5” high-temp voice coil - Oversized spider for linearity at high excursion - High-excursion EPDM rubber surround - 107 ounce magnet/204 ounce motor structure - Frequency Response: 28 - 120 Hz (+/- 3 dB) - 8 ohm impedance SC-10: - 10” (8” piston diameter) subwoofer - 3” high temperature inside/outside voice coil - Oversized spider for linearity at high excursion - High-excursion EPDM rubber su
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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 Installation Your new Velodyne amplifier provides for a number of installation options. Read all the installation information below in order to
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(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 present
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(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. If using the LFE output from your receiver or processor, plug the single cable into the jack labeled
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Option 2 Figure 3B: Stereo Line-Level Connection. . www.v elodyne.com SubContractor User’s Manual 6
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(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
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(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. This removes the lower bass frequencies from your satellites, enabling them to do a
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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 s
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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. Most receivers and processors provide an option to character
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A Word About Subwoofer Placement Subwoofers operate at extremely low frequencies, which are primarily omni-directional. Keep in m ind 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. The worst location for a subw
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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. Note: The master power sw
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• 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.
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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. The following table shows the settings for the various presets: Preset Subsonic Filter EQ EQ Volume Frequency Frequency Level Differential Movies 24 Hz 37 Hz +4 dB +8 dB R&B – Rock 27 Hz 52 Hz +3 dB +5 dB Jazz – Classical 24 Hz N/A N/A N/A (Reference) Games 34 Hz 62 +4 dB +4 dB Restoring Defaults There is a feature that a
