Velodyne Subcontractor SC-IW User manual

(In-Floor/In-Ceiling) Subwoofer
SubContractorTM Series
INSTALLATION MANUAL

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TABLE OF CONTENTS
Product Overview ......................................................1
- Driver Technology ................................................1
- Cabinet Technology ...............................................1
Installation Overview ....................................................3
New Construction Installation - Standard Grille ...............................4
New Construction Installation - Designer Grille ..............................15
Retro-Fit Installation - Designer Grille ......................................25
Retro-Fit Installation - Standard Grille......................................38
Other Velodyne Subwoofer Products ......................................53

www.velodyne.com SC-IW Installation Manual - 1
PRODUCT OVERVIEW
The SC-IW (In-Wall) subwoofer can be installed in a variety of locations and positions in any given installation.
Although this product is extremely versatile and exible in its uses, it has been specically designed for two
major applications - New Construction Installations and Retro-Fit Installations in structures made of traditional
2x4 studs with 16 inch spacing, on-center.
This document provides the detailed process for properly installing the SC-IW into a wall. The SC-IW is designed
to be powered by the SC-1250 subwoofer amplier. For maxiumum performance, it is strongly recommended
that only the SC-1250 be used to power the SC-IW. The user’s manual for the SC-1250 subwoofer amplier
provides the details on connectivity and proper conguration of the SC-IW after installation.
Driver Technology
The SC-IW subwoofer utilizes new and innovative patent-pending driver technology that has been created
specically for the custom installation market. The SC-IW driver was specially designed to maximize in-wall
subwoofer performance while signicantly reducing wall vibration. The driver uses “dual tandem spider design”
along with a propriety neodymium motor structure providing an extremely long-throw driver capable of producing
very high sound pressure levels. Below is a cross section of the SC-IW driver.
Cabinet Technology
Complimenting the cutting edge technology in the SC-IW driver is the cabinet, again specially designed for in-
wall installations. The SC-IW cabinet wall utilizes a propriety multilayer “sandwich” material consisting of two
1.0 mm aluminum plates surrounding 2.5 mm of medium density berboard (MDF) which is laminated under
high pressure to create an extremely rigid cabinet design that has the density and performance of traditional
high end cabinets utilizing 3/4 or 1 inch MDF.

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2 -SC-IW Installation Manual
The SC-IW consists of two cabinets — the “driver module” and the “back box.” (a.k.a. the “Enclosure”). Unlike
other in-wall products where a back box may be optional, the SC-IW requires both enclosures, unaltered, for
every installation. In new construction situations, the back box is in installed rst (for example, at the framing or
rough out stage), and the driver module is installed later in the trim out stage. In retrot situations both boxes
are typically installed together.
The driver module assembly is shown below. It uses a unique bracing system in that the driver acts as the
“internal bracing structure” for the speaker enclosure.
The in-wall back box contains internal bracing to minimize cabinet ex and wall vibration.
The driver module and the back box are connected through two rubber conduits, sealed with supplied hose
clamps. This linking system provides the installer the exibility to either install the two boxes together in the wall
or separately prior to installation.

www.velodyne.com SC-IW Installation Manual - 3
The SC-IW comes in two completely separate cartons — the SC-IWBB (Back Box) and the SC-IWDVR (Driver).
Parts included with the SC-IWBB rough install kit:
• In-wall back box - Qty 1
• Mudring for “retro t” installation - Qty 1
• Installation manual - Qty 1
• Installation hardware
Parts included with the SC-IWDVR driver module:
• SC-IW driver module - Qty 1
• Clamp ring - Qty 2
• Standard grille - Qty 1
• Designer grille - Qty 1
• Hardware
• Installation manual - Qty 1
INSTALLATION OVERVIEW
You must rst decide how the SC-IW is to be installed — whether new or retrot installation, and whether you
are using the standard or designer grille. Remember that in all cases the grille can be painted to match the
room’s décor.
Consider the following information when deciding how the SC-IW will be installed.
Construction New Retrot
Standard Grille Benets:
• Allows pre-installation of the back box
at minimal risk and expense
• Provides easiest servicing for the driver
• No risk to the subwoofer during
drywall/paint/nish processes
See page 4 for a description of this
installation
Benets:
Provides easiest servicing for the driver
See page 38 for a description of this
installation
Designer Grille Benets:
• Provides the smallest grille available
Considerations:
• Must install both back box and driver
cabinet at frame out stage—higher risk
of theft or damage to the subwoofer
• Dicult to service driver as drywall
must be removed to remove driver
module
See page 15 for a description of this
installation
Benets:
Provides smallest grille available
See page 25 for a description of this
installation

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4 -SC-IW Installation Manual
NEW CONSTRUCTION INSTALLATION —
STANDARD GRILLE
Note: This installation process assumes that the installer has access to the open framed 2x4 studded wall with
16 inch spacing. In the event that the stud spacing is larger, an additional 2x4 or other spacer can be used to
ll the space between the SC-IW back box and theneighboring stud.
Step 1 - Install Mudring
Unpack the rst carton (SC-IWBB) and place the contents on the oor. Remove the mudring from the packaging.
At this time the decision needs to be made about which direction the woofer will re (up or down) and therefore
where the grille will be located on the wall. Typically the woofer will re downwards and the grille will be located
near the oor. (Remember to consider baseboards and other trim work that might be used on the house in this
case.) Once you have decided where to place the grille, staple the mudring to the studs as shown in gure 1.
Figure 1: Install Mudring - The back box is used for reference position only — it is installed in the next step.
Align mud ring to
line on the back box.