Velodyne Subcontractor SC-IW User manual

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

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to your home.

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WWW.VELODYNE.COM SC-IW Installation Manual - ii
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

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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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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.

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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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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.

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Step 2 - Install Back Box
Once the mudring is stapled into place, the back box should be installed using eight of the phillips drive at
head screws included in the package. When installing the back box, the mudring should be aligned to the white
line on the cabinet. Once the mudring and the back box are aligned, install the back box as shown.
Figure 2: Install Back Box

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Step 3 - Route Wire
Route the wire from the location where the electronics gear is located to where the SC-IW will be. There is
“extra space” between the studs and the back box in the event that the wire has to pass along the side of the
back box to the driver module.
Figure 3: Route Wire
Step 4 - Cover Rubber Couplings
If the installation is not going to be nished right away, Velodyne recommends “taping” or otherwise “covering”
the two connecting tubes to prevent paint, drywall and/or foreign objects from entering the back box.

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Step 5 - Finish Wall
The wall can now be nished in a traditional fashion utilizing the appropriate drywall thickness, standard
texturing and nishing methods. Be sure to advise the “nishing” contractors that they are to drywall up to the
edge of the mudring, as the mudring is the place holder for the installation of the driver module and standard
grille.
Figure 4: Finish Wall
Note: Steps 6 through 14 presume that you have obtained and are ready to install the SC-IWDVR (In-Wall Driver
Module).
Step 6 - Verify Drywall was Properly Installed
Once the wall is nished, the installer must revisit the installation site and verify that the contractors have
properly used the mudring as their guide leaving an opening that is approximately 16 1/2” x 13 1/4”.

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Step 7 - Remove Mudring
At this point, the mudring can be removed. It should be easily removed by “pulling it through” the drywall
opening. After it is removed, discard.
Figure 5: Remove Mudring

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Step 8 - Place Clamp Rings on Driver Module
Remove the two clamp rings from the packaging and place a clamp ring onto each of the bottom edges of the
tubes.
Note: The position of the clamp ring is critical. Make sure that the screw section of the ring is on either side of
the tube and not on the front or the back. Please see picture below.
Figure 6: Clamp Ring Placement
Screw must
face outward

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Step 9 - Install Driver Module
Insert the driver module assembly through the opening left in the wall by the mudring and slide the plastic tubes
onto the two connection tubes The connection tubes should slide all the way down onto the surface of the
driver module assembly. Once the tubes are ush with the driver module, rmly tighten the two clamp rings to
seal the rubber coupling to the plastic tube.
Note: The silicon rubber tubes should slide over the tubes protruding from the driver module and the clamp
rings should slide over the silicon rubber tubes.
Figure 7: Driver Module Installation
Note: It is critical that a good air seal be achieved between the back box and the driver module. Be sure to
properly tighten all clamps. Test the seal by listening to the connection with test audio material after the install
is complete.

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Step 10 - Remove Metal Grille
Obtain the standard grille with integrated scoop and remove the metal grille insert, as shown, in the picture
below.
Figure 8: Metal Grille Insert Removal
Note: The grille can be painted to match the de´cor. The supplied paint mask can be used to paint the grille
frame while the metal grille insert can be painted separately.

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Step 11 - Install Grille Frame
Install the plastic grille onto the driver module using the four included machine screws. The grille hardware
should easily be installed into the side of the cabinet. Tighten using the supplied allen wrench.
Figure 9: Grille Frame Installation

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Step 12 - Secure Grille
Install two pan head phillips screws (provided) into standard grille into bottom left and bottom right holes.
Figure 10: Secure Grille

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Step 13 - Install Metal Grille Insert
Figure 11: Metal Grille Insert Installation
Step 14 - Installation Complete
The installation is complete. Test the installation with bass audio material and check for buzzes, rattles, and air
leaks and address accordingly.
Figure 12: Completed Installation