QM-615
SLIM LINE IN-CEILING
QUICK MOUNT 2-WAY SPEAKER
I n s t a l l a t i o n & O p e r a t i o n M a n u a l
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Introduction
Congratulations on your purchase of an RBH Sound QM-615 slim line in-ceiling 2-way
speaker! Your speaker is the result of many years of research and development dedicated
to producing high quality products for home audio and audio/video systems.
This manual contains features, setup recommendations and specifications for the RBH
Sound QM-615 slim line in-ceiling 2-way speaker. It is recommended you thoroughly
read through the material contained in this manual before connecting your speaker.
This will ensure you have a good understanding of how to install your speaker for
optimum performance; allowing for years of listening enjoyment.
QM-615 In-ceiling 2-way Speaker
Front View
Front with Grille On
Back View
Break In Period
Allow several hours of listening time to adequately break in the speaker. As the
speaker breaks in, the driver suspension will loosen. The result of break-in will be
an increase in low frequency response, improved definition, clarity and detail.
Safety Compliance
These products are in compliance with the EMC Directive 89/336/EEC and Article 10 (1) of the
directive, in compliance with Technical Regulations EN55013-1 and EN50082-1.
Any RoHS compliant component is tested for the presence of Lead (Pb), Cadmium (Cd), Mercury (Hg),
Hexavalent chromium (Hex-Cr), Polybrominated biphenyls (PBB), and Polybrominated diphenyl ethers
(PBDE). For Cadmium and Hexavalent chromium, there must be less than 0.01% of the substance by
weight at raw homogeneous materials level. For Lead, PBB, and PBDE, there must be no more than
0.1% of the material, when calculated by weight at raw homogeneous materials. Any RoHS compliant
component must have 100 ppm or less of mercury and the mercury must not have been intentionally
added to the component.
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Features
The QM-615 is the budget-minded answer for both residential and commercial
in-ceiling speaker applications. The QM-615 employs a 6½-inch polygraphite woofer
cone and a 1-inch swivel fabric dome tweeter for great sound. The QM-615 speaker is
manufactured with high quality components and engineered to accurately reproduce
music. Mounting flush to a wall or ceiling, architectural speakers are ideal for many
applications where traditional speakers may be impractical or impossible. The
QM-615 is especially well suited for distributing sound throughout the entire home
and can be used to enhance surround sound systems. When properly installed, the
QM-615 will provide you with years of entertainment pleasure.
The QM-615 speaker is packaged with an L-shaped quick installation and removal tool,
grille adhesive, the hole cutout and paint mask templates. No other tools except wire
strippers are required to install the QM-615 speaker once the hole has been cut in the
ceiling or wall.
Painting the Speakers
A paint shield is included with your QM-615 speaker. This shield can be used to
protect the speaker when painting the speaker rim (frame). If you plan to paint your
speaker, we recommend that it be done prior to installation. If you decide to paint
your speaker sometime in the future, it is best to remove it by following the simple
instructions on page 5. When painting the speaker, the paint shields provided in the
packaging must be installed in place of the grille. The grille can also be painted.
Painting the speaker grille should be done with a paint sprayer set to fine. Remove
the grille from the speaker, peel off the grille fabric on the back of the grille and
set aside. Place the grille on a flat surface. Do not use a brush or roller on the
speaker grille as it will clog the holes. This will greatly reduce the sound quality
of the speakers. Do not paint the grille while attached to the speaker. Be sure to
remove the paint shield from the speaker and replace the grille fabric to the back of
the grille before reinstalling the grille and using the speakers.
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Speaker Placement
With nearly endless placement options, careful consideration for placement of the QM-615
in-ceiling speaker needs to be considered, as installation requires cutting a hole in your
wall or ceiling! When using the QM-615 in home theater applications follow the guidelines
illustrated below.
Swivel Tweeter Placement
The QM-615 has a swivel tweeter allowing sound to be directed toward or away from
the listening area depending on the application. A tweeter aimed toward your listening
position improves imaging and detail. When using the QM-615 as front/main home theater
speakers or as stereo speakers in a distributed audio system, aim the tweeter toward the
main listening position. For rear/surround speakers installed in walls or ceilings, aim the
tweeter toward the nearest reflecting surface (an adjacent wall or ceiling) for a more
diffuse sound field (for more direct sound, aim the tweeter at your listening position).
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Installation
CAUTION: Be certain there are no electrical wires, water pipes, heating ducts or any
other obstructions in the planned area of installation before starting to drill or cut
into the ceiling or wall. If there is an electrical outlet nearby, turn off the circuit
breaker to avoid possible injury.
1. These speakers are designed to be mounted between the framing members. Use
a stud finder to locate the positions of joists and rafters. Make sure you have a
2-inch clearance from the outside of the cutout hole from joists and rafters.
2. Drill a 1/4-inch hole in the center of the area you plan to mount the speaker.
Cut or bend a piece of wire (a coat hanger works well) to a 90-degree angle.
Insert the wire into the pilot hole and fish around to make sure there are not
obstructions which will interfere with the installation.
NOTE: If you must choose another location the pilot hole can be easily patched.
3. Once a suitable location is found, use masking tape to temporarily place the
supplied cutout template on the ceiling or wall, centered over the pilot hole.
Draw a circle around the inside edge of the template.
4. Carefully cut the hole with the appropriate cutting tool to remove the material
inside the circle inscribed by the template.
5. Confirm the speaker easily fits into the hole, without any gaps.
6. The speaker terminals will accommodate any speaker wire up to 14-gauge. Select
an appropriate wire gauge from the following chart:
18 gauge for up to 50-feet
16 gauge for up to 100-feet
14 gauge for up to 200-feet
Pull the speaker wire out of the hole and connect the speaker. Split the two
conductors of the speaker wire apart about 3-inches so they form a “Y”. Using
wire strippers, remove about 1/2-inch of insulation from each of the two
conductors of the wire to expose the bare metal and twist each of the conductors
into a single unfrayed strand.
NOTE: When connecting a speaker it is very important to retain the correct
polarity (improper polarity will cause reduced bass performance and unnatural
imaging effects). To do this, be sure the wire attached to the positive terminal
on the speaker (marked [+] or colored red) connects to the positive terminal on
the amplifier. Similarly, the negative terminal (marked [-] or colored black must
connect to the negative terminal on the amplifier.
7. Place the speaker into the hole you previously cutout. Using the circular small
end of the L-shaped quick installation tool or screwdriver simply push upward
the four mounting tabs. The mounting tabs will then rotate very quickly
180-degrees clockwise to fasten the speaker to the ceiling or wall.
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Installation (continued)
8. Using the supplied grille adhesive, apply an ample amount of adhesive around the
grille. Gently push the grille onto the speaker securing the grille to the speaker.
9. To remove the speaker, insert the L-shaped tool’s hex-end into the tab hole to
engage cam mechanism, turn counterclockwise until cam locks in open position.
Repeat for remaining cams then remove speaker.
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Specifications
Model:
QM-615
Series:
Architectural Series
Slim Line In-ceiling 2-way Speaker
55Hz-20kHz 3dB
System Type:
Frequency Response:
Sensitivity:
88dB (2.83V/1 meter)
2-80 Watts
Recommended Power:
Woofer(s):
(1) 6½” (165mm) Polypropylene Cone
(1) 1” (25mm) Swivel Fabric Dome
3,000 Hz
Tweeter(s):
Crossover Frequencies:
Crossover Slope:
Impedance:
12dB/Octave
8 Ohm
Cabinet/Color:
Grille:
White Frame (paintable)
White Powder Coated Steel (paintable)
8.375” (213mm) Dia.
Cutout Dimensions:
Finished Dimensions:
9.375” (238mm) W
3” (76mm) D
Weight:
2.55 lbs. (1.16 Kg)
Warranty:
25 Years (Warranted from date of purchase to be free from
defects and workmanship.)
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Troubleshooting
Situation
Probable Cause
Solution
No sound from speakers.
Speaker wire not connected. Make sure wire is properly
connected at both the
speaker and the amplifier
observing proper polarity.
Speaker selector on
amplifier is not on.
Activate proper speaker
selector on amplifier.
No sound from one
speaker.
Balance control on receiver Place balance control in
or preamp is not centered. the center.
Speaker wire not completely Check all connections at
connected.
amplifier and speakers.
Very little bass and/or
imaging
Speakers are wired
out of phase.
Check entire system for
proper polarity and make
adjustments as necessary.
Warranty
Your QM-615 in-ceiling speaker is covered by a limited warranty against defects in
materials and workmanship for a period of 25 years. This warranty is provided by the
authorized RBH Sound dealer where the speaker was purchased. Warranty repair will
be performed only when your purchase receipt is presented as proof of ownership
and date of purchase. Defective parts will be repaired or replaced without charge by
your dealer’s store or the location designated by RBH Sound authorized to service
RBH Sound products. Charges for unauthorized service and transportation cost are
not reimbursable under this warranty. This warranty becomes void if the product has
been damaged by alteration, misuse or neglect. RBH Sound assumes no liability for
property damage or any other incidental or consequential damage whatsoever which
may result from the failure of this product. Any and all warranties of merchantability
and fitness implied by law are limited to the duration of this express warranty.
Some states do not allow limitations on how long an implied warranty lasts, so the
above limitations may not apply to you. Some states do not allow the exclusion
or limitation of incidental or consequential damages, so the above limitation or
exclusion may not apply to you.
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Redefining the Way You Experience Sound.TM
382 Marshall Way, Layton, Utah • USA • 84041
Toll Free: (800) 543-2205 • Fax: (801) 543-3300
It is RBH Sound policy to continuously incorporate improvements into our products; all specifications are subject to change without notice.
Copyright 2010 RBH Sound. All Rights Reserved.
©
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