crs8 Manual
CRS8 One / CRS8 Two / CRS8 Three / CRS8 Four
Custom Round Series In-Ceiling Loudspeakers
Congratulations on your purchase of SpeakerCraft CRS8 In-Ceiling Speakers. All CRS8 speakers
are equipped with pivoting tweeters, which allow you to direct the sound toward, or away from,
listening area to achieve a desired effect. In addition, each CRS8 model features SpeakerCraft’s
revolutionary WavePlane tweeter baffle. SpeakerCraft has a wide variety of accessories to
compliment your CRS Series speakers. Contact your dealer or SpeakerCraft direct for more details.
Before installing your speakers, you should consider the placement carefully, taking into account the location of electrical,
plumbing and other fixtures. Contact your dealer for assistance if you are not sure of the best location in your particular
room environment.
Standard Co-Axial
WavePlane Technology
Placement In Ceiling: When placing your speakers in the 95% Solid Plane for Tweeter
No Tweeter Baffle
80% Open Area for Woofer
Uneven Forward Dispersion
ceiling, they should ideally be located above the primary Even dispersion, less distortion
which causes distortion
listening area. The unique tweeter baffle of the CRS8 speakers
Diagram 1
allows for more forward radiation and a more even frequency
response than is obtainable on conventional coaxial type round
speakers. (See Diagram 1) If the speakers are positioned far away from the primary listening area, adjust the pivoting
tweeter so they are pointed at the primary listening area. Note: To avoid possible damage to the pivoting tweeters,
read the section entitled “SPEAKER ADJUSTMENTS” in this manual prior to performing the tweeter adjustment.
In a very large room with high ceilings, it may be necessary to place additional speakers throughout the room.
Contact your Authorized SpeakerCraft dealer for assistance.
New Construction — Unfinished Ceilings
A New Construction Bracket, SpeakerCraft P/N BKT90681 (available from your dealer), may be installed prior to drywall application across joists (up to 24" on-center) where a speaker will be located. Insulation material should
be in place prior to installing drywall. After the hole is cut and the drywall is installed, the speakers are then easily installed following the instructions for mounting in “Finished Ceilings”. Note: If the speakers are to be mounted
more than 24" on-center, a special “Extra Long Wing”, SpeakerCraft P/N wing90224, is available from your dealer.
Finished Ceilings
Prior to the actual installation of the speakers, it will be necessary to run cables to the speaker locations. See your
dealer for more information about cable installation. After the cable has been properly installed, you are ready to
mount the speakers. Following the simple steps listed below will result in a professional looking installation:
1. Determine the best area to mount your speakers. This area of the ceiling should be free of obstructions such as
electrical conduit, HVAC ducts, or water lines. This can best be determined by noting the placement of fixtures
and gaining access to an attic or crawl space for further analysis of the location of such obstacles.
2. Find the joists nearest the desired speaker mounting location. We highly recommend using a good stud-finder
tool for this procedure. If you are lining up the speakers to some other object or molding in the room, make
sure you consider the size of the baffle flange which extends beyond the mounting hole.
3. Mark the hole. A template for setting the hole is provided in the box (along with two paint mask inserts for use
when painting). Position the template in the desired position and pencil an outline on the ceiling.
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CRS8 Owner’
Owner’ss Manual
4. Cutting the hole. CAUTION: This is the most important part of the entire
installation. If you are uncertain whether any obstructions exist behind the desired
mounting area, you should start by cutting a small hole in the center of your penciled mounting hole with a drywall saw, cutting at a 45º angle towards the
inside of the hole. (See Diagram 2) Cutting the small hole at this angle will make
drywall repair much easier, using the piece cut out. Once you have determined
that there aren’t any obstructions in your desired mounting location, start cutting
the finished hole at a 90º angle to the ceiling surface.
5. Add insulation. If the area in the ceiling is not already insulated, add an adequate
amount insulation material to loosely cover the back of the speaker. If the insulation
material used is faced with foil or paper, position the foil or paper away from the
Diagram 2:
Ceiling Cut Out
Your CRS8 speakers come from the factory with the tweeter facing straight out from
the baffle. This will result in the overall smoothest response. However, depending
Push Tweeter Here
on your particular primary area, room acoustics, ceiling height, or personal preference, you may find the sound more pleasing by pointing the tweeters in a particular direction. If additional treble is desired in the primary listening area, point the
tweeter towards that area; and if less treble is required, point the tweeter away. Push
gently at the edge of the tweeter to point it in the desired direction. (See Diagram 3)
CAUTION: Avoid touching tweeter dome as damage WILL occur on metal dome
tweeters (CRS8 Three & Four).
Treble Adjustment (CRS8 Two, Three & Four):
The switch labeled TREBLE allows for 6dB of treble (high frequency) adjustment. Your speakers were
shipped with the treble switch in the neutral position, providing the most linear frequency response. If you
desire more treble, roll the switch to the “+” position, and the tweeter will play 3dB higher. If you want less
treble, roll the switch to the “-” position and the tweeter will play 3dB lower. To return to the neutral setting,
slide the switch to the middle position. (See Diagram 4)
Bass Adjustment (CRS8 Three & Four):
The switch labeled BASS allows for 6dB of bass (low frequency) adjustment. Your speakers were shipped
with the bass set to neutral, resulting in 6Ω of impedance. This setting provides the flattest bass frequency
response. If you desire more bass, roll the switch towards “+” and the bass will play 3dB higher and lower
the impedance to 4Ω. If you want less bass, roll the switch towards “-” and the bass will play 3dB lower and
increase the impedance to 8Ω. This setting provides a more linear bass frequency response. To return to the
neutral setting, slide the switch to the middle position. (See Diagram 5) Remember that altering the impedance affects the number of speakers able to be driven by an amplifier. If multiple pairs of speakers are to be
driven by one amplifier, SpeakerCraft suggests using the lowest output position (switch rolled towards the “-”
position) until it is determined that the amplifier will operate properly with the speakers switched to a high- er
output mode. If you want to safely operate multiple pairs of speakers, consider purchasing SpeakerCraft S4 or S8
Speaker Selectors.
Diagram 4:
Treble Adjustment Switch
Note: Your CRS8 Series speakers may have come with the optional Jawz speaker wire connector. Before
using Jawz , please follow the instructions included with the connector.
The unique integral four foot mounting system incorporated into each CRS8 speaker allows for a quick
installation by following these easy steps:
1. Remove the grille. It may be necessary to push one or two of the mounting screws and its attached foot
towards the baffle and against the inside surface of the grille to force the grille out of its retaining groove.
2. Attach the speaker cable (observing the proper polarity with your amplifier, + to + and - to - ).
Make sure the left channel of the amplifier is connected to the left speaker, and the right channel is
connected to the right speaker.
3. Make sure the mounting feet are turned inward to clear the opening, and insert the speak- er
Diagram 5:
Bass Adjustment Switch
Owner’s Manual
Page 2
Page 3
Owner’s Manual
into the ceiling. Position the speaker into the hole. Note: The flange of the speaker is designed
to flex and conform to any small imperfections in the ceiling’s surface. Tighten the four screws
on the front of the baffle only enough to make the flange become snug against the ceiling. As
you tighten the screws, the feet will automatically flip into an outward position (See Diagram
6), thereby clamping the drywall between the feet and the flange. CAUTION: Over tightening
may warp the baffle, crack the ceiling, cause flange to distort, and make the grille difficult
to install.
4. Push the grille firmly into the slot in the speaker baffle.
If you plan to paint your speakers, we recommend that it be done prior to installation. If
you plan to paint your speakers sometime in the future, it is best to remove them by simply
reversing the steps for “SPEAKER INSTALLATION” on page 2. If it is necessary to paint the speakers
while they are still in the ceiling, the paint masks provided in the carton must be installed in place
of the grille while the flange is being painted with the ceiling. The grilles can also be painted,
however, great care should be taken not to clog the holes, as this will greatly reduce the sound
quality of the speakers. Before painting the grilles, remove the under grille material. Put this material back into place once the grille has been painted. SpeakerCraft recommends only light spray
painting, using 5 parts thinning agent to 1 part paint. Do not paint the grilles while they are
attached to the speaker. If it is necessary to paint the under grille material, follow the same
procedure used to paint the grilles. Diagram 6:
Mounting Feet
If you plan to mount your speakers in a fire-rated ceiling, you should purchase SpeakerCraft 8" Round Sound Enclosures, model #SE1410. The
metal enclosures mount easily between joists, and contain a standard electrical type connector for connections of your speaker cable directly
to the speaker.
SpeakerCraft Inc. warrants to the original retail purchaser only that this SpeakerCraft product will be free from defects in materials and workmanship, provided
the speaker was purchased from a SpeakerCraft Authorized Dealer.
Defective products must be shipped, together with proof of purchase, prepaid insured to the SpeakerCraft Authorized Dealer from whom they were purchased,
or to the SpeakerCraft factory at the address listed on this installation instruction manual. Freight collect shipments will be refused. It is preferable to ship this product in the original shipping container to lessen the chance of transit damage. In any case, the risk or loss or damage in transit is to be borne by the purchaser. If,
upon examination at the Factory or SpeakerCraft Authorized Dealer, it is determined that the unit was defective in materials or workmanship at any time during
this warranty period, SpeakerCraft or the SpeakerCraft Authorized Dealer will, at its option, repair or replace this product at no additional charge, except as set
forth below. If this model is no longer available and can not be repaired effectively, SpeakerCraft, at its sole option may replace the unit with a current model of
equal or greater value. In some cases where a new model is substituted, a modification to the mounting surface may be required. If mounting surface modification is required, SpeakerCraft assumes no responsibility or liability for such modification. All replaced parts and product become the property of SpeakerCraft Inc.
Products replaced or repaired under this warranty will be returned to the original retail purchaser, within a reasonable time, freight prepaid.
This Warranty does not include service or parts to repair damage caused by accident, disaster, misuse, abuse, negligence, inadequate packing or shipping procedures, commercial use, voltage inputs in excess of the rated maximum of the unit, or service, repair or modification of the product which has not been
authorized or approved by SpeakerCraft. This Warranty also excludes normal cosmetic deterioration caused by environmental conditions. This Warranty will be
void if the Serial Number on the product has been removed, tampered with or defaced.
This Warranty is in lieu of all other expressed warranties. If the product is defective in materials or workmanship as warranted above, the purchaser’s sole remedy
shall be repair or replacement as provided above. In no event will SpeakerCraft be liable for any incidental or consequential damages arising out of the use or
inability to use the product, even if SpeakerCraft Inc. or a SpeakerCraft Inc. Authorized Dealer has been advised of the possibility of such damages, or for any
claim by any other party. Some states do not allow the exclusion or limitation of consequential damages, so the above limitation and exclusion may not apply.
All implied warranties on the product are limited to the duration of this expressed Warranty. Some states do not allow limitation on the length of an implied warranty. If the original retail purchaser resides in such a state, this limitation does not apply.
Page 4
CRS8 Owner’s Manual
CRS8 One
CRS8 Two
Speaker Type: 2-Way In-Ceiling
2-Way In-Ceiling
8" Polypropylene Cone 8" Glass Composite Cone Tweeter:
Pivoting 1" Silk Dome
Pivoting 1" Silk Dome
Sensitivity: 89dB 1W/1m
90dB 1W/1m
Frequency Adjustments: None
Front-Mounted 3 Position
±3dB Treble Adjustment Switch
Frequency Response: 40Hz - 20kHz ± 2dB
40Hz - 20kHz ± 2dB
Power Recommendations:
5-100 watts (undistorted)
5-100 watts (undistorted)
Diameter x Depth:
1115⁄16" x 41⁄2"
1115⁄16" x 41⁄2"
Ceiling Cut Out:
CRS8 Three
CRS8 Four
Speaker Type: 2-Way In-Ceiling
2-Way In-Ceiling
8" Aluminum Cone 8" Aluminum/Magnesium Cone
Pivoting 1" Aluminum Dome
Pivoting 1" Aluminum/Magnesium Dome Impedance:
8/6/4Ω, depending on switch settings
8/6/4Ω, depending on switch settings
Sensitivity: 90dB 1W/1m
90dB 1W/1m
Frequency Adjustments:
Front-Mounted 3 Position
±3dB Treble Adjustment Switch & ±3dB Bass Adjustment Switch
Front-Mounted 3 Position
±3dB Treble Adjustment Switch
& ±3dB Bass Adjustment Switch
Frequency Response: 38Hz - 20kHz ± 2dB
36Hz - 20kHz ± 2dB
Power Recommendations:
5-125 watts (undistorted)
5-150 watts (undistorted)
Diameter x Depth: 1115⁄16" x 41⁄2"
1115⁄16" x 41⁄2"
Ceiling Cut Out:
In our attempt to constantly improve our products, features and specifications are subject to change without notice.
SpeakerCraft offers a variety of accessories to make your installation of these speakers and other SpeakerCraft products easy, economical,
and professional. Contact your authorized SpeakerCraft Dealer for more information.
Should you have any questions regarding this, or any other SpeakerCraft product, please call our toll-free service hotline at
1-800-448-0976. We are available to assist you every weekday, except holidays, between the hours of 7:00 a.m. and 5:00 p.m. PST.
940 Columbia Avenue, Riverside CA 92507
(800) 448-0976 Fax (909) 787-8747
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