AtlasSound.com
2/4
1601 JACK MCKAY BLVD. ENNIS, TEXAS 75119 U.S.A.
TELEPHONE: (800) 876-3333
FAX (800) 765-3435
©2012 Atlas Sound L.P
. All rights reserved. Atlas Sound and Strategy Series are trademarks of Atlas Sound L.P
. All other tradem
arks are property of their respective owners. A
TS002219 RevE 8/13
General Description
The FAPSUB-1 consists of a highly efficient 8” subwoofer designed
for optimal performance in its included enclosure system. The woofer
features an extended, vented pole piece for higher excursion and better
heat dissipation and a Kapton
®
voice coil former for increased power
handling.
A highly efficient, 3-pole filtering network eliminates unwanted high
frequencies from the woofer, while the 937 in
3
, tuned and ported, deep
drawn steel enclosure provides frequency response down to 45Hz
(±10dB). A specially designed rippled speaker dust cap helps eliminate
nearly all frequency artifacts emanating from the center of the woofer
cone.
A special low saturation 70.7V / 100V transformer is included with
primary taps at 1.9, 3.8, 7.5, 15, 30, and 60 watts (@70.7V) to match
and balance the subwoofer with full range speakers without the need
for separate amplification. A convenient front mounted selector switch
allows tap selection without the need to remove the speaker from the
ceiling. This tap selector switch also includes a transformer bypass
setting for 8
Ω /
direct coupled applications.
Mounting is simplified with Strategy Series
®
style "Dog Leg" tabs that
allow easy installation into drop tile or drywall ceilings with the provided
tile bridge assembly. The tile bridge consists of two “V” shaped formed
mounting rails and a C-Ring assembly. The C-Ring can be attached to
the rails with the screws provided to extend support to the T-Bar grid in
suspended ceiling applications. Multiple hole locations are provided to
allow the C-Ring to be positioned to the outer edge the tile if necessary.
For existing dry-wall applications, the tile bridge C-Ring and support rails
can be inserted into the hole cut for the FAPSUB-1. For easy positioning,
the “V” shaped support rails match the shape of the C-Ring tabs for easy
maneuvering and location when working "blindly" above the deck.
For new construction drywall ceiling applications, the optional FAP82-TR
trim ring is available. This unit provides a marked location for drywall
installers to cut around, essentially reserving the desired location in the
ceiling until final installation of FAPSUB-1. Mounting holes are provided to
accommodate 16" or 24" OC stud / joist mounting.
A support ring is also provided on the top of the FAPSUB-1 enclosure to
facilitate an auxiliary support cable.
NOTE: IT IS MANDATORY THAT THIS SECONDARY SUPPORT
BE UTILIZED IN DROP CEILINGS FOR SAFETY AND SEISMIC
CONSIDERATIONS.
System Design Considerations
How many subwoofers to use, where to place them, and at what
wattage to tap them will be different in almost every situation.
Variables include:
Size of the Room
Speaker Mounting (Ceiling) Height
Ambient
Noise
Level
Type of Music
Available Speaker Locations
Generally speaking, separate electronic crossovers and amplification
are not necessary for the FAPSUB-1. However, in certain high SPL
situations the increased efficiency gained by using an active crossover
and dedicated amplifier is beneficial. The Atlas ASP-MG24 or models
from the Blue Bridge product line have DSP based crossovers for such
applications.
For contemporary music reproduction, the minimum subwoofer level
should be set to match the volume of the full range speakers; however,
for some high energy music applications the maximum level could be as
much as 10dB louder than the full range speakers.
Like any speaker, use of the boundary effect will increase the output of
the FAPSUB-1. Placing the loudspeaker within 3' of a wall will increase
the output by 3dB. Placement within 3' of a corner will increase the level
another 3dB (6dB total).
FAPSUB-1
C-Ring / V-Rails
FAP82-TR
