WolfPack 24213 User manual

User's Manual
30W 70V Coax Speaker Pair

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CONTENTS
SAFETY WARNINGS AND GUIDELINES.......................................................................................................................................3
INTRODUCTION................................................................................................................................................................................................3
FEATURES..............................................................................................................................................................................................................4
CUSTOMER SERVICE....................................................................................................................................................................................4
PACKAGE CONTENTS.................................................................................................................................................................................4
CONSTANT VOLTAGE VS 8-OHM SPEAKER SYSTEMS..................................................................................................5
SPEAKER WIRE PREPARATION............................................................................................................................................................6
SPEAKER WIRING ...........................................................................................................................................................................................8
PAINTING...............................................................................................................................................................................................................8
SPEAKER BREAK-IN ......................................................................................................................................................................................9
INSTALLATION................................................................................................................................................................................................10
TROUBLESHOOTING .................................................................................................................................................................................. 13
TECHNICAL SUPPORT............................................................................................................................................................................... 13
SPECIFICATIONS............................................................................................................................................................................................14

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SAFETY WARNINGS AND GUIDELINES
Turn off and unplug all equipment prior to making electrical connections, including
speaker wire connections.
Reduce the volume level prior to making any change to the audio input source, e.g.,
changing radio stations or changing CDs.
When using this speaker as part of a constant voltage speaker system, ensure that
the amplifier power is at least 20% higher than the total power settings of the
connected speakers.
Most speaker damage is caused by clipping, which is heard as distortion. If you hear
distortion, reduce the volume level until the audio is no longer distorted.
Take care to ensure that the speaker wire connections are properly polarized.
Inverted polarization can result in unnatural or attenuated sound, especially in the
bass frequencies.
Do not use chemical cleaners or solvents to clean this speaker. Use only a soft, dry
cloth. Moisten the cloth with warm water for particularly stubborn deposits.
INTRODUCTION
Thank you for purchasing these In-Ceiling Speakers! In-ceiling speakers are the ideal
combination of sound quality and styling. Rather than cluttering the room with large box
speakers trailing speaker wires, the speakers are virtually invisible, while filling the room
with high fidelity audio. Featuring removable and paintable grilles, these 2-way speakers
use polypropylene and mica woofer cones with rubber surrounds for deep, impactful bass,
and PEI dome tweeters for sweeter and smoother high frequencies.
These 2-way speakers feature a built-in step-down transformer, allowing them to be used
as part of a 70V or 100V constant voltage speaker array, with three 70V and two 100V taps.
They can also be used as conventional 8-ohm speakers for use in a standard home theater
audio system.

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FEATURES
Polypropylene + mica cone woofers
PEI dome tweeters
8-ohms nominal impedance
Compatible with 70V and 100V constant voltage speaker systems
Built-in step-down transformer with three 70V and two 100V taps
Removable and paintable grille
CUSTOMER SERVICE
The Monoprice Customer Service department is dedicated to ensuring that your ordering,
purchasing, and delivery experience is second to none. If you have any problem with your
order, please give us an opportunity to make it right. You can contact a Monoprice
Customer Service representative through the Live Chat link on our website
www.monoprice.com during normal business hours (Mon-Fri: 5am-7pm PT, Sat-Sun: 9am-
6pm PT) or via email at [e-mail]
PACKAGE CONTENTS
Please take an inventory of the package contents to ensure you have all the items listed
below.
2x Coaxial in-ceiling speakers
1x Grille removal tool
1x Roll grille putty
1x Cutout template
1x User's manual

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CONSTANT VOLTAGE VS 8-OHM SPEAKER SYSTEMS
A constant voltage speaker system differs from a traditional 8-ohm speaker system in that
it uses a step-up transformer at the audio source to raise the voltage and lower the current
on the transmission line. At the speaker end, a step-down transformer converts the signal
back to a normal speaker level voltage. This reduces power loss during transmission, which
allows for the use of longer speaker wire runs using smaller gauge wire.
Additionally, a constant voltage speaker system allows for the use of multiple speakers on
each channel, without the need for complicated impedance calculations and
configurations. In a constant voltage system, all speakers on a given channel are connected
in parallel and the complicated impedance calculations are replaced by simple wattage
calculations.
For example, if you want to connect two speakers per channel in a traditional 8-ohm
speaker system, you must either connect them in series, which results in an overall 16-ohm
impedance, or in parallel, which results in an overall 4-ohm impedance. In the first case, the
16-ohms impedance effectively halves the output power of your amplifier, resulting in
lower overall volume levels. In the latter case, the 4-ohms impedance means that your
amplifier will have to work harder and must be rated as stable at 4 ohms. Adding a third
speaker to the mix would complicate it further, producing either a 24-ohm or 2.67-ohm
overall impedance. Note that very few amplifiers are stable under 2-ohm loads, so that is
usually not an option.
On the other hand, with a constant voltage system, you consider first the RMS output
wattage of the amplifier. This should be reduced by 20% to compensate for insertion loss.
For example, if using a 100-watt amplifier, the total load from speakers should not exceed
80 watts.
Each individual speaker on a given channel is set to a value such that the total does not
exceed the rated power, less 20%. You do not need to worry about making the total as
close as possible to the limit; just ensure that the total does not exceed the limit.

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If all speakers are set to the same wattage value, they will all have the same volume level.
If one speaker is set to a higher wattage value, it will be louder than the others, while a
speaker set to a smaller value will be quieter than the others. This allows you to
compensate for the environment in which the speaker is placed. For example, a speaker
placed outside would need to be louder than a speaker placed in a small room.
SPEAKER WIRE PREPARATION
Before attempting to make any connections it is best to look at the situation, get all the
necessary materials together, and then make all the connections at once.
First, look at the back of your amplifier or receiver to determine what options it offers for
making connections. Amplifiers and receivers typically employ either 5-way binding posts,
spring-loaded terminals, or push terminals for the speaker connections.
A 5-way binding post can accept bare speaker wire, spade plugs, pin plugs, and banana
plugs, while spring loaded terminals and push terminals can accept either bare speaker
wire or pin plugs. Refer to the documentation that came with your amplifier or receiver to
determine the maximum size/gauge speaker wire the speaker terminals can accept.
These in-ceiling speakers feature push terminals, which can accept pin plugs or bare wire
up to 14AWG, as well as bare wire leads for connecting a constant voltage speaker array.
If your amplifier can accept it, you should use 14AWG speaker wire. Using pin plugs is
highly recommended for several reasons. Plugs are easier to connect, don't run the risk of
stray wire strands shorting the connections, allow for use of heavier gauge speaker wire in
most cases, and it is much easier to identify the polarity from a color coded ring on a plug
then from a subtle marking along the length of a wire.
Because the speaker wires will necessarily be run through your walls, you must use in-wall
rated wire. This is required by fire safety codes and ensures that the wire jacket will not act
as an accelerant in the event of a fire.
Rather than using fixed length speaker wires, it is best to get a roll and cut the wires to the
length you will need them. This ensures that there is a minimum amount of excess wire.
However, even if your amplifier is off-center, the lengths of wire used for each speaker pair
should be identical. This keeps the impedance on each channel the same, which ensures

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that the volume levels, frequency ranges, and tonalities are identical. Any excess wire
should be snaked back and forth, not coiled, to avoid creating an inductor/antenna for
stray radio signals.
Before making the actual connections, cut each length of wire to size. Note the markings
on the wire that differentiate between each conductor. Sometimes the marking clearly
identifies a positive and negative side. Some common clearly positive and negative
markings or identifiers are:
Positive
Negative
Red
Black
Copper
Silver
╋╋╋
━━━
In many cases, the mark is a single stripe on the jacket of one of the connectors. In this
case the side with the stripe is generally
considered the positive side, but it really does not
matter as long as you are consistent and always
using the stripe as positive or always using it as
negative.
When you are ready to prepare your speaker
wires, first separate about 4" of wire, then strip
about 1/4" (6mm) insulation from the end and twist it to prevent stray strands. If you plan
to use banana or pin plugs (highly recommended), install the plugs on the wire.

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SPEAKER WIRING
If using this speaker as a conventional 8-ohm speaker, most installations will consist of only
a single speaker per channel. Wiring a speaker this way is straightforward, with a single
two-conductor speaker wire running from the amplifier to the speaker's inputs.
However, when used as part of a constant
voltage speaker system, most installations
will consist of multiple speakers per channel.
In this case, all speakers are connected in
parallel, as shown in the diagram to the right.
These speakers use different colored wire
leads attached to the different taps on the step-down transformer for the various wattage
settings. The following tables show the different wattage values for each of the wire leads
on each model.
24213
Input
70V
100V
Black
Common
Blue
6W
N/A
Brown
3W
6W
Yellow
1.5W
3W
24214
Input
70V
100V
Black
Common
Brown
20W
N/A
Orange
10W
20W
Blue
5W
10W
24215
Input
70V
100V
Black
Common
Red
30W
N/A
Blue
15W
30W
Yellow
7.5W
15W
PAINTING
The grille and frame can be painted to match your ceiling, making the speaker even less
noticeable. Perform the following steps to safely paint them without damaging the
speaker.
1. Remove the center portion of the cardboard installation template/paint mask. The
central portion is the paint mask, while the outer portion is the installation
template.

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2. Completely remove the grille by inserting a paper clip or the included grille removal
tool into one of the holes and pulling to lift it off the frame.
3. Remove the foam insert and set it aside.
4. Insert the paint mask, covering the
speaker while leaving the frame
exposed.
5. Paint the speaker frame and grille. It
is best to use spray paint to avoid
paint clogging the holes in the grille.
6. Allow the paint to completely dry
before proceeding with installation.
Ensure that the holes in the grille are not blocked by paint.
SPEAKER BREAK-IN
In the same way that a new car requires a break-in period before it can be safely operated
at high engine RPMs, speakers require a break-in period before they can be safely operated
at maximum volume levels. Proper break-in ensures that the moving parts of the speaker
(the cone and cone suspension) are allowed to flex and soften, losing the initial stiffness
and allowing the speaker to move through its full intended range. After the break-in
period, the speakers will produce richer and fatter sounding lows, warmer and smoother
sounding mids, and cleaner and more accurate highs, without any hint of distortion.
The best way to break-in speakers is simply to play normal music or watch movies at
moderate volume levels. The amount of time required for speaker break-in varies based on
the operating environment, but is typically in the area of 50~80 hours. It will take a bit
longer in a cold or dry environment and a little less time in a warm or humid environment.
Note that the break-in period does not have to be continuous.

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INSTALLATION
Perform the following steps to install the speaker into a drywall ceiling. The speaker can be
mounted to a surface that is between 3/8" and 1-1/4" thick, with at least 5.5" internal
clearance.
1. Determine where you will be installing the speaker. Use a stud finder to ensure that
there is sufficient space between the desired location and the adjacent ceiling
studs. Be sure and check for perpendicular framing members, as well. Use a pencil to
mark the edges of the adjacent studs.
2. If you have not already done so, remove the center portion of the cardboard
installation template/paint mask and set it aside. The central portion is the paint
mask, while the outer portion is the installation template.
3. Position the installation template against the ceiling at the installation location.
4. Use a pencil to mark the cut line on the wall.
5. Remove the template from the wall and set it aside.
6. Drill a small hole in the middle of the cutout area. If the proposed installation
location is not clear, you can more easily repair the small hole than if you cut
without checking and find one or more obstructions.
7. Take a stiff piece of wire, such as a hanger, and bend it 90° about 7" from the end.
Insert the wire past the bend, then rotate the wire 360° to check for hidden
obstructions above the ceiling. Push it in to ensure that there is sufficient clearance
above the ceiling.
8. Once you know your installation location is clear, use a drywall or keyhole saw to
cut along the cut lines.
9. If you have not already done so, prepare your speaker wire in accordance with the
guidelines in the Speaker Wire Preparation section above.
Important! Because the speaker wire will necessarily be routed through your walls
and ceiling, you must use in-wall rated speaker wire.
10. Route your speaker wire from the back of your amplifier, through the wall, to the
installation location.

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11. If you have not already done so, completely remove the grille by inserting a paper
clip or the included grille removal tool into one of the holes and pulling to lift it off
the frame.
12. Remove the foam insert from behind the grille and set it aside.
13. If you will be installing this speaker as part of a 70V or 100V constant voltage
system, perform the following steps, otherwise skip ahead to step 14 below.
a. Determine the wattage rating of your amplifier, then multiply that value by
0.8 to determine the maximum wattage available to the speaker array.
b. Refer to the tables in the SPEAKER WIRE section above to determine the
appropriate taps to use. The wattage ratings of the taps used on all speakers
in the array must be less than the wattage value calculated in the previous
step.
For example, if the array will consist of one model 24214 speaker pair and
one model 24215 speaker pair connected to a 70V 100-watt amplifier, the
positive speaker lead should be connected to the 10W (orange) leads on the
24214 speakers and to the 15W (blue) leads on the 24215 speakers, resulting
in a total of 50 watts, which is less than the 80 watts maximum load.
c. Using a wire nut of the appropriate size (not included), connect the negative
speaker wire lead from the amplifier or previous speaker in the array and the
negative speaker wire lead to the next speaker in the array (if applicable), to
the black common lead on the speaker.
d. Using a wire nut of the appropriate size (not included), connect the positive
speaker wire lead from the amplifier or previous speaker in the array and the
positive speaker wire lead to the next speaker in the array (if applicable) to
the appropriately colored lead on the speaker, corresponding to the wattage
value you determined in step 13b above.
14. If installing this speaker as part of an 8-ohm audio system, perform the following
steps, otherwise skip ahead to step 15 below.
a. Press down on the red and black terminals on the speaker and remove the
red and black leads to the step-down transformer.

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b. Press down on the black terminal and insert the negative speaker wire lead
from the amplifier.
c. Press down on the red terminal and insert the positive speaker wire lead
from the amplifier.
15. Ensure that the mounting tabs on the speaker assembly are turned inwards.
16. Position the speaker into the hole.
17. Using a #2 Phillips screwdriver, tighten each mounting screw to turn the mounting
tabs back outward. Continue tightening until the mounting tabs are firmly against
the back of the ceiling surface and the speaker is secure. Do not over-tighten the
screws to avoid damage to the mounting tabs.
18. Reposition the foam insert inside the grille, then insert the grille into the speaker
frame.
19. Ensure that your amplifier is powered off and unplugged from the power source.
20. Connect the amplifier end of the speaker wire to one of the speaker level, 70V, or
100V outputs on your amplifier, taking care to match the polarity markings on the
speaker wire or plugs.
21. Repeat the above steps for additional speakers, as desired.
Congratulations, your speakers are installed and ready for use!

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TROUBLESHOOTING
Q1: The sound from one of the speakers is muddy, with attenuated bass response.
A1: Double check the polarity of the speaker wire connections.
Q2: The sound from one of the speakers is louder or quieter than the other speakers in a
constant voltage system.
A2: Check the wattage settings of the affected speaker. If it is higher than that of the
other speakers, it will be louder. Similarly, if it is set to a lower value, it will be quieter
than the other speakers. To get the same volume level, set the switch to the same
wattage setting as is used on the other speakers.
Q3: The sound from all the speakers is scratchy, harsh, or fuzzy sounding.
A3: You are hearing audible distortion, which can cause damage to both the speakers and
the amplifier. Reduce the volume level until distortion can no longer be heard in any
part of the audio signal.
TECHNICAL SUPPORT
Monoprice is pleased to provide free, live, online technical support to assist you with any
questions you may have about installation, setup, troubleshooting, or product
recommendations. If you ever need assistance with your new product, please come online
to talk to one of our friendly and knowledgeable Tech Support Associates. Technical
support is available through the online chat button on our website www.monoprice.com
during regular business hours, 7 days a week. You can also get assistance through email by
sending a message to [e-mail]

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SPECIFICATIONS
Model
24213
24214
24215
Input
8 ohms, 70V, 100V
8 ohms, 70V, 100V
8 ohms, 70V, 100V
70V Wattage Taps
6W, 3W, 1.5W
20W, 10W, 5W
30W, 15W, 7.5W
100V Wattage Taps
6W, 3W
20W, 10W
30W, 15W
Frequency Response
65 Hz ~ 20 kHz
55 Hz ~ 20 kHz
48 Hz ~ 20 kHz
Power Handling
Capacity
30 watts nominal,
60 watts maximum
40 watts nominal,
80 watts maximum
50 watts nominal,
100 watts maximum
Woofer
5.25" polypropylene
+ mica cone
6.5" polypropylene
+ mica cone
8" polypropylene
+ mica cone
Tweeter
0.5" PEI dome
0.5" PEI dome
0.5" PEI dome
Crossover
12dB @ 4.5kHz
12db @ 4.2kHz
12dB @ 4.2kHz
Sensitivity
86dB ±2dB
(1.0m/2.83V)
87dB ±2dB
(1.0m/2.83V)
89dB ±2dB
(1.0m/2.83V)
Coverage
120° conical
120° conical
120° conical
Cut-out Dimensions
ø6.89" (ø175mm)
ø8.07" (ø205mm)
ø9.69" (ø246mm)
Overall Dimensions
ø8.4" x 3.0"
(ø213 x 75 mm)
ø9.4" x 5.0"
(ø240 x 127 mm)
ø11.0" x 5.9"
(ø280 x 151 mm)
Mounting Depth
2.44" (62mm)
4.27" (111mm)
5.35" (136mm)