Velodyne SC-12, SC-IC, SC-IF, SC-8, SC-10 DATASHEET

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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SubContractor User’s Manual

I

Attention!

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SubContractor User’s Manual

II

Vorsicht!

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SubContractor User’s Manual

III

Attenzione!

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SubContractor User’s Manual

IV

Table of Contents

C

ongratulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Product Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

– SC-1250 Subwoofer Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

– SC-8, SC-10, SC-12, SC-15, SC-IW, SC-IF Woofers . . . . . . . . . . . . . . . . . . . . . . . . .2

Setup Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

– Front Panel Controls and Displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

– Rear Panel Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

– About Low-Pass Crossovers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

– A Word About Your Receiver’s Crossover and the SC-1250 Crossover . . . . . . . . . . .10

– A Word About Interconnect Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

– A Word About Subwoofer Placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Selecting the Subwoofer(s) to be Controlled . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

– Using the SC-1250 to Drive Two Subwoofers . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Restore Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Care of Your Amplifier and Subwoofer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

– Troubleshooting and Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Appendix A: RS

-232 Serial Over

view and Commands . . . . . . . . . . . . . . . . . . . . . . . . .18

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SubContractor User’s Manual

V

Congratulations

C

ongratulations 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 serviceable parts inside. Please refer all
service questions to your authorized Velodyne dealer.

Prior to Installation

Please unpack the system carefully. Remove all staples used to seal the carton as they can
scratch the chassis. Please save the carton and all packaging materials for future use. Record
the serial number in the space provided on the warranty card for future reference.

Product Features

SC-1250 Subwoofer Amplifier

• Amplifier: 3000 watts dynamic/1250 watts RMS high efficiency, Class D

• DSP-controlled

• 4 selectable pr

• Automatic 7 band r

• Night-mode setting

• Mute control

• Adjustable (30 to 160 Hz) low-pass crossover (defeatable)

• Line-level (RCA) inputs and outputs

• Speaker-level inputs with 5 way binding post connections

• Signal sensing auto turn on/off (defeatable)

• Variable volume control

• Selectable phase control (0, 90, 180 or 270 degrees)

• Built-in adjustable digital low-pass cr

• Driver Displacement Control software to prevent over excursion and amp clipping

• Blue power indicator LED

• RS-232 Serial Interface

• 12 Volt trigger

• Universal remote input jack

• Ability to drive up to TWO subwoofers**

** If two subwoofers ar
subwoofers can be r
SC-1250, only one can be driven.

esets for customized listening mode

oom equalizer (microphone included)

ossover with 24 dB/octave slope

e driven, they must each have 8 ohm or higher impedence. SC Series

un in this fashion. If a more traditional 4 ohm subwoofer is driven with the

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SubContractor User’s Manual

1

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 surround

- 162 ounce magnet/346 ounce motor structure

- Magnetically shielded for video use

- Frequency Response: 24 - 120Hz (+/- 3 dB)

- 8 ohm impedance

SC-12:

- 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 structur

- Magnetically shielded for video use

- Frequency Response: 22 - 120Hz (+/- 3 dB)

- 8 ohm impedance

e

SC-15:

- 15” (12.7” piston diameter) subwoofer

- 3” high temperature inside/outside voice coil

- Oversized spider for linearity at high excursion

- High-excursion EPDM r

- 162-ounce magnet/346 ounce motor structure

- Magnetically shielded for video use

- Fr

- 8 ohm impedance

SC-IW (In-W

-

- Neodymium magnet structure

- Quad spider configuration with upper/lower spider modules

- High-excursion EPDM rubber surround

- 3” high temperature inside/outside voice coil

- Magnetically shielded for video use

- Frequency Response: 22 - 120Hz (+/- 3 dB)

- 8 ohm impedance

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ound

ubber sur

equency Response: 22 - 120Hz (+/- 3 dB)

all):

4” x 14” rectangular driver (3” x 13.25” piston diameter) with flat Carbon
Fibre/Rohacell/Carbon Fiber sandwich diaphragm

r

SubContractor User’s Manual

2

S

C-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

Setup Checklist

Be sure to do the following to ensure the best performance from your subwoofer(s):

❑ If possible, optimize the placement of the subwoofer(s) in the listening area.

See page 11 of the User’s Manual.

❑ Install and wire the subwoofer per the instructions on pages 3 - 9.
❑ Select the proper model per the instructions on page 11.
❑ Be sure the low pass crossover is set correctly. See pages 9 - 10.
❑ Be sure to equalize the subwoofer using the microphone and Auto-EQ feature.
❑ Be sure to set the phase control on the remote. See page 12.
❑ Select the correct pr

eset for the source material. See pages 13 – 14.

Your new Velodyne amplifier provides for a number of installation options. Read all the
installation information below in order to determine which installation option is best for your
system. Remember to perform all installation procedures with system power turned off.

Installation

FRONT PANEL CONTROLS AND DISPLAYS

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1

1

Figure 1: Front Panel Connections of the SC-1250.

Following are brief descriptions of the controls described in Figure 1. More detail on these
controls can be found in the next section.

3

2

3

2

4

4

5

5

6

6

7

7

8

8

(1) Power LED

This LED illuminates when the power is on. Blue is nor
the unit is in standby mode or the remote has been used to deactivate the unit. This LED
dims when the unit is in night mode.

(2) Power Switch

This push button style switch is the main on/off for the unit.

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mal operation. It tur

SubContractor User’s Manual

ns amber when

3