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 | Fathom 

ICS

Page 4

TABLE OF CONTENTS

Important Safety Instructions:   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  3
Introduction and Overview:   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
System Components:   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  5-7
Tools for Installation / Prepping the Work Area:    . . . . . . . . . . . . . . . . . . . . . . . . . . .  8
What Is In The Box?: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  9
Enclosure Mounting Hardware:  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  10
Enclosure Installation Procedure:   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  11-31
Grille Installation Procedure:   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32-33
Specifications:   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

INTRODUCTION

Thank you for choosing the JL Audio Fathom In-Ceiling Subwoofer System, also 

known as the ICS. 

This document contains detailed instructions for the installation of the Fathom 

ICS enclosure. Since a portion of the enclosure will be inaccessible after installation, 

we strongly recommend reading these instructions completely before beginning the 

installation process. Please note, these instructions are for the installation of one (1) 

ICS enclosure. Simply repeat the steps to install additional enclosures.

FATHOM ICS SYSTEM OVERVIEW

The Fathom ICS is offered in two options:

ICS-SYS-108

 includes all elements for the installation of one (1) subwoofer.

ICS-SYS-208

 includes all elements for the installation of two (2) subwoofers.

Each Fathom ICS System consists of four elements:

ICS-SYS-108

ICS-SYS-208

(1) Enclosure

(2) Enclosures

(1) Subwoofer*

(2) Subwoofers*

(1) Grille Assembly **

(2) Grille Assemblies**

(1) 300W Amplifier **

(1) 600W Amplifier **

* Pre-installed in enclosure.   ** Not included with enclosure.
Each system includes specialized hardware to ensure proper installation.

Summary of Contents for FATHOM ICS-SYS-108

Page 1: ...Enclosure Installation Manual ICS SYS 108 ICS SYS 208...

Page 2: ......

Page 3: ...fireplaces or other devices which produce heat Do not place candles nearby 6 Object or Liquid Entry Care should be taken so that objects do not fall into and liquids are not spilled onto the enclosure...

Page 4: ...ion we strongly recommend reading these instructions completely before beginning the installation process Please note these instructions are for the installation of one 1 ICS enclosure Simply repeat t...

Page 5: ...e proper fit and should not be altered in any way Failure to use the proper enclosure and or alteration of the spacers and padding will result in loss of performance and unwanted vibrations Designed t...

Page 6: ...ave been painted and the room s interior is free of construction debris A plastic paint guard is included to shield the inner black section of the grille tray from overspray during painting The grille...

Page 7: ...er system in home theater and home audio systems Utilizing a precisely engineered switching power supply the SA 600W is capable of efficiently generating unclipped output voltages equivalent to 600 wa...

Page 8: ...driver optional Pencil or Marker Drop cloth optional Masking tape optional PREPPING THE WORK AREA This manual illustrates installation in new construction homes however Fathom ICS enclosures may also...

Page 9: ...U 152340 LEFT BRACKET Part E Left Joist Mounting Brackets x2 SKU 193621 RIGHT BRACKET Part F Right Joist Mounting Brackets x2 SKU 193620 SKU 152446 SKU 152445 SKU 152444 SKU 152340 SKU 152339 SKU 1523...

Page 10: ...r Stud Mount Part C Left Joist Mounting Brackets x2 Part E Right Joist Mounting Brackets x2 Part F L Brackets x4 Part J IC 2 Joist Width Range 17 inches to 25 inches on center Left Joist Mounting Brac...

Page 11: ...imarily intended for ceiling applications the ICS enclosure is also compatible with in wall applications with walls constructed from 2 x 6 studs or larger Refer to the figures at left to identify whic...

Page 12: ...inches of unobstructed length space Continuous width inside the ceiling joists over the entire 58 inches must be no less than 14 inches and no more than 24 inches A minimum 5 inches of height Joists...

Page 13: ...on a supported surface table and remove the shrink wrap to detach the Floor Support Part D Figure 1 Stud Mount Attachment Points The enclosure is equipped with engraved arrows that point to the approv...

Page 14: ...e to the nearest obstacle and at least 41 inches of unobstructed space in the opposite direction Next place a second mark 25 inches away from each of the first marks Position the Joist Mounting Bracke...

Page 15: ...s Final Position Adjust the enclosure s position to the middle of the ceiling cavity Centering the enclosure within the ceiling cavity so that no sides of the enclosure are in contact with the joists...

Page 16: ...uring installation Figure 6 Slide the L Bracket Part J outward and secure to the ceiling joist using six 8 x 1 25 inch wafer head screws Repeat this procedure with the remaining L Brackets Part J at t...

Page 17: ...Page 17 Fathom ICS This page intentionally left blank...

Page 18: ...ourself with the appropriate mounts for your specific installation Install Joist Mounting Brackets Mark the bottom edge of each ceiling joist at the desired position of the center of the driver grille...

Page 19: ...ure 9 Determine the Enclosure s Center Place the Extended Lower Stud Mount Part H into the bottom Joist Mounting Brackets Parts E F with its narrow end centered below the joist Figure 10 Mark a line o...

Page 20: ...Mounts Parts G H to the enclosure using the wafer head screws that were removed earlier Make sure to install the wafer head screws into the same mounting holes of the enclosure that were used for the...

Page 21: ...s Final Position Adjust the position of the enclosure so that the narrow ends of the Extended Stud Mounts Parts G H are centered below the joists Ensuring that no sides of the enclosure are in contact...

Page 22: ...installed there should be a small space at each end between the L Bracket Extensions Part I and the adjacent ceiling joists Figure 14 Note For ceiling cavities with joist widths that are greater than...

Page 23: ...e evenly spaced and not intrude upon L Bracket installation Note Any 8 x 1 50 inch pan head screws substituted to attach the L Brackets to the L Bracket Extensions below may count towards the 8 screw...

Page 24: ...with the pilot holes in the enclosure Next fully install four 8 x 1 50 inch pan head screws into each L Bracket Extension Part I with the screws evenly spaced while avoiding the L Bracket Part J mount...

Page 25: ...ould remain loose allowing it to slide for adjustment during installation Figure 19 Slide the L Bracket Part J outward and secure to the ceiling joist using six 8 x 1 25 inch wafer head screws Repeat...

Page 26: ...requirements At least 58 inches of unobstructed height measured from the floor Continuous width inside the studs over the entire 58 inches must be no less than 14 inches and no greater than 15 inches...

Page 27: ...art D Floor Support shrink wrapped to enclosure Place the enclosure on a supported surface table and remove the shrink wrap from the Floor Support Part D Position the Floor Support Part D in the reces...

Page 28: ...ty so that no sides of the enclosure are in contact with the studs will reduce the potential for unwanted noise and vibration Install two 8 x 2 00 inch pan head screws through the guide holes located...

Page 29: ...and secure to the stud using six 8 x 1 25 inch wafer head screws Repeat this procedure with the remaining L Brackets Part J at the remaining corner ends of the enclosure Next fully tighten all screws...

Page 30: ...correct polarity connect the individual wires to the push terminals then slide a rubber cover over each terminal Figure 26 Note To reduce the potential for unwanted noise and vibration secure the spe...

Page 31: ...ssors to cut and trim the edges of the foam gasket strip Figure 27 Install the Wallboard Install the surrounding wallboard using the Wallboard Template Part A as a hard edge The surrounding wallboard...

Page 32: ...ws are included with the grille assembly to fit a range of wallboard thicknesses It is critical to use the correct thumb screw length for a proper fit Refer to the table at right to select the thumb s...

Page 33: ...nclosure Tighten each thumb screw by hand being careful not to over tighten Figure 3 Rubber screw stoppers are included to prevent the thumb screws from loosening To install press a rubber stopper ove...

Page 34: ...Fathom ICS Page 34 Notes...

Page 35: ...Page 35 Fathom ICS Notes...

Page 36: ...rted Enclosure Two Ported Enclosures Driver s 8 in nominal diameter 8 in nominal diameter in each of two enclosures Frequency Response anechoic 24 9 Hz 109 Hz 1 5 dB 3dB at 24 6 Hz 111 Hz 10dB at 23 4...

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