TH-12A
2-Way 12" Powered Loudspeaker
O W N E R ’ S M A N U A L
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CONTENTS
What? Me read a manual?
Before you begin, please make sure you read the
Safety Instructions on page 2 and Getting Started
on page 4.
SAFETY INSTRUCTIONS ........................................... 2
INTRODUCTION ...................................................... 5
HOOKUP DIAGRAMS............................................... 5
FEATURES .............................................................. 8
REAR PANEL DESCRIPTION................................ 8
1. INPUT........................................................ 8
2. THRU ........................................................ 8
3. LEVEL ........................................................ 8
4. OL INDICATOR............................................ 9
5. HIGH EQ .................................................... 9
6. MID EQ ...................................................... 9
7. MID FREQ .................................................. 9
8. LOW EQ ..................................................... 9
9. EQ ON/OFF SWITCH .................................. 9
10. POWER SWITCH......................................... 9
11. LINE CORD SOCKET AND FUSE..................... 9
PROTECTION CIRCUITS.......................................... 10
INPUT SIGNAL WIRING......................................... 10
PLACEMENT.......................................................... 10
APPENDIX A: SERVICE INFORMATION.................... 11
APPENDIX B: CONNECTIONS ................................. 12
APPENDIX C: SPECIFICATIONS ............................... 13
DIMENSIONS........................................................ 14
FREQUENCY GRAPH.............................................. 14
BLOCK DIAGRAM.................................................. 15
MACKIE LIMITED WARRANTY................................ 16
Your new Mackie TH-12A powered loudspeakers
are designed to set up quickly and operate easily.
We know it’s often seen as a sign of weakness to
read a manual, along with asking for directions
when lost, but we hope you will read the rest of the
manual, at least while nobody is looking.
It is important to keep your receipt in a
safe place, and not a bad idea to write your
product information below for future reference
(i.e., insurance claims, tech support, return
authorization, etc.).
Please write the serial number for your TH-12A here
(or for both TH-12As if you have two) for future reference:
Loudspeaker 1
Loudspeaker 2
Purchased at:___________________________________ Date of Purchase:_____________
Don’t forget to visit our website at www.mackie.com
for more information about this and other Mackie products.
Part No. SW0890 Rev. C 03/11
©2011 LOUD Technologies Inc. All Rights Reserved.
3
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Getting Started
The following steps will help you set up your
loudspeakers quickly.
Now that you have your loudspeakers working, it’s
time to hunker down and read the rest of this manual…
especially the following:
INITIAL SETTINGS:
ADDITIONAL TIDBITS OF WIDSDOM:
1. Turn the LEVEL control on the rear panel all the
way down.
2. Set the EQ ON/OFF switch out (OFF).
3. Turn the POWER switch OFF.
• Never listen to loud music for prolonged periods.
Please see the Safety Instructions on page 2 for
information on hearing protection.
• When you shut down your equipment, turn off the
TH-12A loudspeakers first to prevent thumps
and other noises generated by any upstream
equipment from coming out of the speakers.
When powering up, turn on the TH-12As last.
CONNECTIONS:
1. Connect the line-level signal from your mixer (or
other signal source) to the INPUT jack on the
TH-12A rear panel (XLR connector).
• Save the shipping boxes and packing materials!
You may need them someday. Besides, your
cat will love playing in them and jumping out at
you unexpectedly. Remember to pretend like you
are surprised!
2. Connect the supplied AC power cord to the IEC
socket on the back of the loudspeaker. Plug the
other end into an AC outlet properly configured with
the correct voltage as indicated just below the IEC
socket.
• Save your sales receipt in a safe place.
TURN IT ON:
• Record the serial number in the space provided on
1. Turn the POWER switch ON.
page 3, along with where and when you bought it.
2. Start your signal source (mp3 player, CD, DAW,
band, or whatever), but leave the master level
control on your mixer down.
3. Slowly turn up the LEVEL control on the TH-12A to
the “U” (unity gain) mark at the center position.
4. Adjust the master volume on your mixer to a
comfortable listening level. If the volume from the
speakers gets really loud, really fast, try turning
down the LEVEL control on the TH-12A a bit. If the
speakers don’t get loud enough, turn up the LEVEL
control to achieve a good balance of master volume
control and loudness from the speaker.
4
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Introduction
The Mackie TH-12A Powered Loudspeaker delivers a chest-pounding 400W of peak system power via ultra-
efficient Class-D amplification. This means more power with less weight, perfect when portability matters. The 12"
high-precision woofer and 1" compression driver provide punchy sound with superior midrange response, ideal for
vocal and acoustic applications.
An integrated 3-band contour EQ with a sweepable mid-frequency lets you dial in the perfect tone and even
allows you to correct common room anomalies. The XLR input handles both mic and line level signals, so you can
just hook up a mic and be heard, assuming you have something to say. There’s even an XLR Thru that allows you to
easily “daisy chain” multiple TH-12As for increased coverage.
The TH-12A harnesses Mackie’s Active technology, including transducer time alignment, phase correction and
precision crossovers, maximizing the potential of every component. The TH-12A is truly greater than the sum of its
parts.
Convenient top and side handles are integrated into the rugged, impact-resistant polypropylene enclosure,
providing a PA solution that is as durable as it is portable. It makes the perfect stage monitor, and at only 25.5 lb,
it’s a breeze to pole-mount on a tripod stand or atop a subwoofer.
Mackie Thump TH-12A — High-performance audio without the high price tag.
Here’s a quick look at all the features packed into the TH-12A loudspeaker:
• 100W HF and 300W LF power amplifiers (peak)
• 12" low-frequency woofer
• High-density adiabatic fiberfill absorbs internal
reflections
• 1" high-frequency compression driver
• Flat frequency response (–10 dB, 57 Hz to 20 kHz)
• 24 dB/octave crossover at 3 kHz
• Low-frequency over-excursion protection
• High-strength lightweight polypropylene cabinet
• Ported, bass reflex design for enhanced bass
performance
• Rear panel power switch
• Pole-mount socket
• Balanced Mic/Line XLR input and thru connectors
• Adjustable input level control
• LF EQ provides ±15 dB at 80 Hz and below
• MF EQ provides ±15 dB with sweepable frequency
from 100 Hz to 8 kHz
• Convenient portable design, with integrated
handles in both sides and top
• HF EQ provides ±15 dB at 12 kHz and above
• EQ bypass switch
Stereo Speaker Hookup
Left
Line-Level
Output
Right
Line-Level
Output
TH-12A
TH-12A
CONTOUR EQ
CONTOUR EQ
U
U
EQ
EQ
MIC
MIC
MIC
MIC
(UNBALANCED)
L
L
OFF
ON
OFF
ON
TAPE
IN
TAPE
OUT
R
HIGH
HIGH
12kHz
12kHz
R
-15 +15
600
-15 +15
600
1
2
3/4
5/6
7/8
L
L
L
L
L
ProFX8 Mixer
MON SEND
FOOTSWITCH
FREQ
FREQ
R
R
R
R
R
100 8k
U
100 8k
U
ST RETURN
FX SEND
MAIN OUT
PHONES
ON
OL
ON
OL
STEREO GRAPHIC EQ
48V
MID
MID
GAIN
GAIN
GAIN
GAIN
GAIN
POWER
LEVEL
U
POWER
LEVEL
U
EQ
EQ
EQ
EQ
EQ
-15 +15
U
-15 +15
U
MAIN
METERS
LOW
LOW
USB
80Hz
80Hz
FX PRESETS
O
O
-15 +15
THRU
-15 +15
THRU
AUX
PAN
AUX
PAN
AUX
PAN
AUX
PAN
AUX
PAN
O
O MAX
O
O MAX
INPUT LEVEL
L
R
USB THRU
BREAK
INPUT
INPUT
FX MASTER
MUTE
FX TO MON
PHONES
TAPE LEVEL
MUTE
MUTE
MUTE
3/4
MUTE
5/6
MUTE
7/8
MAIN
MON
1
2
ST RTN
FX RTN
The left and right line-level outputs from a mixer feed the inputs of two Mackie TH-12A Powered
Loudspeakers.
5
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Daisy-Chaining Two Speakers Per Side
Using a Microphone and the Thru Jack
TH-12A
TH-12A
CONTOUR EQ
U
CONTOUR EQ
U
EQ
EQ
OFF
ON
OFF
ON
HIGH
HIGH
12kHz
12kHz
-15 +15
600
-15 +15
600
FREQ
FREQ
100 8k
U
100 8k
U
ON
OL
ON
OL
MID
MID
POWER
LEVEL
U
POWER
LEVEL
U
-15 +15
U
-15 +15
U
CONTOUR EQ
LOW
LOW
U
80Hz
80Hz
EQ
O
O
-15 +15
THRU
-15 +15
THRU
OFF
ON
O
O MAX
O
O MAX
HIGH
12kHz
-15 +15
600
INPUT
INPUT
FREQ
100 8k
U
ON
OL
MID
POWER
LEVEL
-15 +15
U
U
LOW
TH-12A
TH-12A
80Hz
O
-15 +15
THRU
O O MAX
CONTOUR EQ
U
CONTOUR EQ
U
EQ
EQ
OFF
ON
OFF
ON
HIGH
HIGH
INPUT
12kHz
12kHz
-15 +15
600
-15 +15
600
FREQ
FREQ
100 8k
U
100 8k
U
ON
OL
ON
OL
MID
MID
POWER
LEVEL
U
POWER
LEVEL
U
-15 +15
U
-15 +15
U
LOW
LOW
80Hz
80Hz
Dynamic
O
O
-15 +15
THRU
-15 +15
THRU
O
O MAX
O
O MAX
Microphone
INPUT
INPUT
CONTOUR EQ
U
EQ
OFF
ON
HIGH
Thru
Thru
12kHz
-15 +15
600
FREQ
100 8k
U
ON
OL
MID
Left
Right
POWER
LEVEL
U
-15 +15
U
Line-Level
Output
Line-Level
Output
LOW
80Hz
O
-15 +15
THRU
O O MAX
MIC
MIC
MIC
MIC
MIC
MIC
(UNBALANCED)
L
L
T
APE
IN
T
OUT
R
APE
ProFX12 Mixer
R
INPUT
1
2
3
4
5/6
7/8
9/10
11/12
L
L
L
L
L
L
MON SEND
FOOTSWITCH
R
R
R
R
R
R
ST RETURN
FX SEND
MAIN OUT
PHONES
STEREO GRAPHIC EQ
48V
GAIN
GAIN
GAIN
GAIN
GAIN
GAIN
GAIN
GAIN
EQ
EQ
EQ
EQ
EQ
EQ
EQ
EQ
MAIN
METERS
USB
FX PRESETS
AUX
PAN
AUX
PAN
AUX
PAN
AUX
PAN
AUX
PAN
AUX
PAN
AUX
PAN
AUX
PAN
L
R
INPUT LEVEL
USB THRU
BREAK
FX MASTER
MUTE
FX TO MON
PHONES
T
APE LEVEL
MUTE
MUTE
MUTE
MUTE
MUTE
5/6
MUTE
7/8
MUTE
9/10
MUTE
11/12
MON
MAIN
1
2
3
4
ST RTN
FX RTN
The left and right line-level outputs from a
mixer feed the inputs of two Mackie TH-12A
For microphone connections, you can daisy-chain
up to two TH-12As using the THRU jack, as shown.
Powered Loudspeakers. Their respective THRU
jacks feed the inputs of another pair of Mackie
TH-12A Powered Loudspeakers.
Take great care to point any microphones away
from the loudspeakers. Otherwise, feedback may
occur.
6
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PA System with two powered subwoofers
Left Main
Right Main
Po wered Loudspeaker
(Mackie TH-12A)
Po wered Loudspeaker
(Mackie TH-12A)
High Pa ss
Output
High Pa ss
Output
Po le Mount
Po le Mount
ProFX12 Mixer
From Mixer
Right Output
From Mixer
Left Output
Po wered Subwoofer
(Mackie SRM1801)
Po wered Subwoofer
(Mackie SRM1801)
The left and right line-level outputs from a mixer feed the inputs of two powered subwoofers. The high
pass line-level outputs of the subwoofers feed the inputs of the Mackie TH-12A loudspeakers.
PA System with one powered subwoofer
Left and Right Main
Powered Loudspeakers
(Mackie TH-12A)
High Pass
Output
High Pass
Output
1
2
3
4
5/6
7/8
9/10
11/12
From Mixer
Left and Right
Outputs
MON
MAIN
ProFX12 Mixer
Powered Subwoofer
(Mackie SRM1801)
The left and right line-level outputs from a mixer feed the inputs of a powered subwoofer. The high pass
line-level outputs of the subwoofer feed the inputs of the Mackie TH-12A loudspeakers.
7
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Mackie TH-12A Features
REAR PANEL DESCRIPTION
CONTOUR EQ
9
U
EQ
OFF
ON
HIGH
5
12kHz
-15 +15
600
FREQ
7
100 8k
U
ON
OL
4
3
MID
6
LEVEL
POWER
-15 +15
U
U
LOW
10
8
80Hz
O
-15 +15
O O
MAX
THRU
INPUT
11
2
1
This is where you connect AC power and your
signal to the loudspeaker and make adjustments to
the frequency response of the speaker to match the
loudspeaker’s location and your room’s environment.
3. LEVEL
The LEVEL control adjusts the overall signal level at
the input to the built-in power amplifiers. It ranges from
Off ( ) to MAX (maximum gain), with unity gain at the
center position (12 o’clock).
1. INPUT
• The TH-12A is designed to operate with a +4
dBu signal when the LEVEL control is at the U
(center) position.
This is a female XLR-type connector that accepts a
balanced mic or line-level signal from a mixing console
or other signal source. For small gigs, simply connect a
microphone directly and adjust the LEVEL control [3]
accordingly.
• The TH-12A can accept up to a +20 dBu signal
by turning down the LEVEL control accordingly.
Turning the LEVEL past unity will provide enough
gain to connect a microphone directly.
2. THRU
• NEVER connect the output of an amplifier directly
to the input of the TH-12A. This could damage the
active input circuitry of the loudspeaker.
This is a male XLR-type connector that produces
exactly the same signal that is connected to the input
jack. Use it to daisy-chain several TH-12As together off
the same signal source.
8
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8. LOW EQ
4. OL Indicator
This control provides up to 15 dB of boost or cut
below 80 Hz and it is also flat at the center
position (U). This frequency range represents the
punch in bass drums, bass guitar, fat synth patches, and
some really serious male singers.
The OL (overload) indicator lights when the
amplifiers in the TH-12A are near the clipping point. It
is okay if the OL indicator blinks occasionally, because
this means that the transient peaks are just reaching
the maximum output of the amplifiers and you are
getting the most from your TH-12As.
9. EQ ON/OFF Switch
If the OL indicator is blinking frequently or lighting
continuously, turn down the LEVEL control [3] on the
TH-12A or turn down the signal at it source
(e.g., the mixing console) until the OL indicator blinks
occasionally or not at all.
This switch allows you to bypass the EQ section.
When the switch is out (OFF), the EQ section is
bypassed and the EQ knobs have no effect on the signal.
When the switch is pushed in (ON), the EQ controls
may be used to tailor the frequency response of the
TH-12A.
5. HIGH EQ
This control gives you up to 15 dB boost or cut above
12 kHz. The circuit is flat (no boost or cut) at the
center position (U). Use it to add sizzle to cymbals,
and an overall sense of transparency or edge to the
keyboards, vocals, guitar, and bacon frying. Turn it down
a little to reduce sibilance, or to remove high frequency
hiss.
10. POWER Switch
Use this switch to turn the TH-12A loudspeaker on
and off. The indicating LED above the POWER switch
lights when the POWER switch is on and AC power
is available at the linecord socket. A second power
indicator is located on the front of the cabinet.
6. MID EQ
11. Line Cord Socket and Fuse
This is a midrange EQ control that provides 15 dB of
boost or cut centered at any frequency between
Connect the detachable line cord to this IEC socket
securely, and plug the other end into your AC outlet.
Make sure the AC power is matched to the AC power
indicated on the rear panel (under the IEC socket).
100 Hz and 8 kHz. The MID EQ circuit is flat (no boost
or cut) at the center position (U). This frequency range
includes most vocals (male at the lower end of the
range and female at the upper end of the range), and
the fundamentals and harmonics for many instruments.
The fuse is located behind the fuse cover, at the
bottom of the IEC socket. See the “Troubleshooting”
section on page 11 for information about replacing the
fuse.
7. MID FREQ
This knob ranges from 100 Hz to 8 kHz and
determines the center frequency for the MID EQ filter.
This allows you to zero in on the precise narrow band of
frequencies you want to have affected by the MID EQ.
9
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Protection Circuits
There are several protection mechanisms designed
into the TH-12A to safeguard the loudspeakers and
amplifiers from inadvertent damage.
• If the internal temperature again gets too hot,
the shutdown process repeats. Should this
happen, make sure that airflow to the rear of the
cabinet is not restricted. If the ambient air
temperature is very warm, try pointing a small
fan toward the rear panel to increase the airflow
across the rear panel.
CAUTION: The protection circuits are
designed to protect the loudspeakers under
reasonable and sensible conditions. Should
you choose to ignore the warning signs
(i.e., frequent OL LED indications, excessive distortion),
you can still damage the speakers in the TH-12A by
overdriving them past the point of amplifier clipping. Such
damage is beyond the scope of the warranty.
Driver Protection
Each driver has its own compression circuit, which
helps protect them from damaging transient peaks. The
compressors are designed to be transparent and are not
noticeable under normal operating conditions.
Overexcursion Protection
A 12 dB/octave high-pass filter at 60 Hz just prior
to the low-frequency amplifier prevents very low
frequencies from being amplified. Excessive low-
frequency energy below 60 Hz can damage the woofer by
causing it to “bottom out,” also known as overexcursion,
which is equivalent to a mechanical form of clipping.
Input Signal Wiring
You should use high-quality, shielded cable to
connect the signal source to the INPUT jack on the
TH-12A.
• High quality microphone cables work well.
Thermal Protection
• Foil shielded cables are commonly used for audio
All amplifiers produce heat. The TH-12A is designed
to be efficient both electrically and thermally.
wiring.
• The better the shield, the better the immunity
from externally induced noise (like EMI and
RFI). Route the cable away from AC power cords
and outlets. These are common sources for hum
in an audio signal. You can purchase quality
cables from your Mackie dealer.
The amplifier module is mounted on a large
heatsink, which is cooled by convection where cool air
is drawn over the rear panel, carrying the heat away.
In order for this convection cooling to work efficiently,
it is important to provide adequate airspace behind
the loudspeaker. When you position the TH-12A, we
recommend leaving at least six inches of air space
behind it.
Placement
The TH-12A loudspeaker is designed to sit on the
floor or stage. It may also be pole-mounted via the
built-in socket on the bottom of the cabinet. Be sure the
pole is capable of supporting the weight of the TH-12A.
• If for some reason the internal temperature
gets too hot, a built-in thermal switch activates
and turns off the amplifier. This protection
operates independently for the low-frequency and
high-frequency amplifiers. Therefore, it is possible
for only the low frequency or high frequency
amplifier to shut down while the other remains on.
WARNING: The cabinet has no rigging
points and is not suitable for rigging.
NEVER attempt to suspend the TH-12A by
its handles.
• When the amplifier cools down to a safe
temperature, the thermal switch resets
and normal operation resumes.
As with any powered components, protect them from
moisture. If you are setting them up outdoors, make
sure they are under cover if you expect rain.
10
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Appendix A: Service Information
If you think your Mackie product has a problem,
please check out the following troubleshooting tips and
do your best to confirm the problem. Visit the Support
ideas or contact our technical support heroes. You may
find the answer to the problem without having to send
your Mackie product away.
4. Replace the fuse drawer by pushing it all the way
back into the IEC socket.
If two fuses blow in a row, then something is very wrong.
Try a different outlet in a totally different location. If fuses
continue to blow, see the “Repair” section on the next page
to find out what to do.
Troubleshooting
No Sound
• Are the power LEDs on the front and rear panel
illuminated?
No Power
• Our favorite question: Is it plugged in?
• Make sure the line cord is securely seated in the
line cord socket and plugged all the way into the
AC outlet.
• Make sure the AC outlet is live (check with a
tester or lamp).
• Is the POWER switch in the ON position?
• Are the power LEDs on the front and rear panel
illuminated? If not, make sure the AC outlet is
live. If so, refer to “No Sound” below.
• If the power LEDs are not illuminated, and you
are certain that the AC outlet is live, it is possible
the fuse has blown.
• Is the LEVEL control turned up?
• Is the signal source turned up? Make sure the
signal level from the mixing console (or whatever
device immediately precedes the loudspeaker) is
high enough to produce sound.
• If it’s a stereo pair, try switching them around.
For example, if a left speaker is presumed dead,
switch the left and right cords at the speakers. If
the problem switches sides, it’s not the TH-12A. It
could be a bad cable, or no signal from the mixer.
Bad Sound
To remove and replace the fuse:
• Is the input connector plugged completely into
the INPUT jack?
1. Disconnect the power cord from the IEC socket.
2. Remove the fuse drawer by prying it open with
a small screwdriver. It will slide all the way out.
• Is something connected to the THRU jack? Try
unplugging it. If the sound improves, whatever
was plugged into the THRU jack may have
affected the signal.
• Is it loud and distorted? Reduce the signal level at
the mixer.
• If possible, listen to the signal source with
headphones plugged into the preamp stage. If it
sounds bad there, it’s not the loudspeaker.
FUSE
• Too much bass or not enough bass? Move
around the room and see if the bass response
changes. It’s possible your listening position
coincides with a room mode where the
low frequencies either become exaggerated or
nulled. If so, try moving the loudspeakers to a
different position, or moving your listening
position.
3. Remove the fuse and replace it with an
equivalent-type fuse.
115 VAC unit: 6.3 amp slo-blo (T6.3AL/250 V)
230 VAC unit: 3.15 amp slo-blo (T3.15AL/250 V)
11
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Noise/Hum
Appendix B: Connections
• Check the signal cable between the mixer and
the loudspeaker. Make sure all connections are
secure. These problems usually produce crackling
noises or hum.
XLR Connectors
XLR connectors are used to make balanced input
and through connections to the TH-12A. They are wired
as follows, according to standards specified by the AES
(Audio Engineering Society).
• If you are using two or more TH-12A powered
loudspeakers, try plugging them all into the same
AC outlet panel or outlet strip. The purpose for
this is to connect them all to the same earth
ground point and reduce the possibility of creating
a ground loop.
XLR
Hot (+) Pin 2
Cold (–)Pin 3
Shield (Ground)Pin 1
• If connecting an unbalanced output to the TH-12A
balanced input, make sure the shield is connected
to the unbalanced ground and to pin 1 of the XLR.
2
SHIELD
HOT
Repair
1
3
COLD
For warranty service, refer to the warranty
information on page 16.
SHIELD
1
3
COLD
2
HOT
Non-warranty service for Mackie products is
available at a factory-authorized service center. To
locate your nearest service center, call our Tech
Support department at 1-800-898-3211, Monday-Friday,
during normal business hours, Pacific Time, to explain
the problem. Tech Support will tell you where the
nearest factory-authorized service center is located in
your area.
SHIELD
COLD
HOT
1
3
2
Balanced XLR Connectors
Need help with your new loudspeaker?
• Telephone 1-800-898-3211 to speak with one of our splendid technical support chaps (Monday
through Friday, normal business hours, PST).
12
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Appendix C: TH-12A Specifications
Acoustic Performance
Equalization
Frequency Range (–10 dB):
Frequency Response (–3 dB):
Horizontal Coverage Angle:
Vertical Coverage Angle:
57 Hz – 20 kHz
Low Frequency EQ:
Mid Frequency EQ:
15 dB @ 80 Hz, shelving
15 dB, bandpass,
sweepable from100 Hz to
8 kHz
70 Hz – 18.5 kHz
90º
60º
High Frequency EQ:
Direct/EQ Switch:
15 dB @ 12 kHz,
shelving
Maximum SPL Long-Term:
Maximum SPL Peak:
117 dB SPL @ 1m
120 dB SPL @ 1m
Bypasses EQ section
Input/Output
Input Type:
Protection Features
Over-excursion Protection:
Female XLR Balanced /
Unbalanced
Second-order sub-sonic
filter
Input Impedance:
Loop-through:
20 k balanced
bridging;
10 k unbalanced
Thermal Protection:
Driver Protection:
Independent amplifier
shutdown, auto reset
Independent HF and LF
compressors
Male XLR Balanced /
Unbalanced
(parallel with input)
Level Control:
Sensitivity:
Rotating knob
0 dB at center
AC Power Requirements
US:
100 – 120 VAC,
50 – 60 Hz 320 watts
+4 dBu for full output
(Level Control @ Center)
EU:
200 – 240 VAC,
50 – 60 Hz 320 watts
–36 dBu for full output
(Level Control @ Max)
AC Connector:
3-pin IEC 250 VAC,
20 A male
Transducers
Low Frequency:
Construction Features
Basic Design:
Material:
12 in / 305 mm with
steel frame, paper cone
woofer
Trapezoidal
Polypropylene
Textured
High Frequency:
Horn-loaded 1 in /
25 mm exit compression
driver
Finish:
Handles:
One on each side, one on
top
Grille:
Perforated metal with
weather-resistant coating
Power Amplifiers
Low Frequency Power Amplifier
Display LEDs
Front:
Rated Power:
150 watts, 8 ohm load
300 watts peak
Power ON
Rear:
Power ON, OL (overload)
Signal-to-Noise Ratio:
Operating Temperature:
0˚ – 40˚C
32˚ – 104˚F
>94 dB, 20 Hz to 20 kHz, unweighted,
referenced to 138 watts into 8 ohms
BTL Class D
Design:
Physical Dimensions and Weight
Dimensions
High Frequency Power Amplifier
Rated Power:
50 watts, 4 ohm load
100 watts peak
Height:
23.5 in / 596 mm
14.5 in / 367 mm
12.4 in / 314 mm
25.5 lb / 11.6 kg
Width:
Signal-to-Noise Ratio:
Depth:
>97 dB, 20 Hz to 20 kHz, unweighted,
referenced to 50 watts into 4 ohms
Class AB
Weight:
Mounting Methods:
Design:
Pole-mountable via the built-in socket on the
bottom of the cabinet. Be sure the pole is
capable of supporting the weight of the TH-12A.
Electronic Crossover
Crossover Type:
13
24 dB/octave
3 kHz
Crossover Frequency:
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TH-12A Dimensions
WEIGHT
25.5 lb
11.6 kg
14.1 in /
357 mm
23.5 in /
596 mm
22.8 in /
579 mm
6.3 in /
160 mm
6.0 in /
152 mm
20.6 in /
522 mm
CONTOUR EQ
14.5 in /
367 mm
12.4 in /
314 mm
TH-12A Frequency Response
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TH-12A Block Diagram
LOUD Technologies Inc. is always striving to improve our products
by incorporating new and improved materials, components, and
manufacturing methods. Therefore, we reserve the right to change
these specifications at any time without notice.
“Mackie,” and the “Running Man” are registered trademarks of LOUD
Technologies Inc. All other brand names mentioned are trademarks
or registered trademarks of their respective holders, and are hereby
acknowledged.
©2011 LOUD Technologies Inc. All Rights Reserved.
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Mackie Limited Warranty
Please keep your sales receipt in a safe place.
This Limited Product Warranty (“Product Warranty”) is provided by LOUD Technologies Inc. (“LOUD”)
and is applicable to products purchased in the United States or Canada through a LOUD-authorized
reseller or dealer. The Product Warranty will not extend to anyone other than the original purchaser of
the product (hereinafter, “Customer,” “you” or “your”).
For products purchased outside the U.S. or Canada, please visit www.mackie.com/warranty to find
contact information for your local distributor, and information on any warranty coverage provided by the
distributor in your local market.
LOUD warrants to Customer that the product will be free from defects in materials and workmanship
under normal use during the Warranty Period. If the product fails to conform to the warranty then LOUD
or its authorized service representative will at its option, either repair or replace any such nonconforming
product, provided that Customer gives notice of the noncompliance within the Warranty Period to the
Company at: www.mackie.com/support or by calling LOUD technical support at 1.800.898.3211 (toll-
free in the U.S. and Canada) during normal business hours Pacific Time, excluding weekends or LOUD
holidays. Please retain the original dated sales receipt as evidence of the date of purchase. You will need it
to obtain any warranty service.
For full terms and conditions, as well as the specific duration of the Warranty for this product, please visit
www.mackie.com/warranty.
The Product Warranty, together with your invoice or receipt, and the terms and conditions located
at www.mackie.com/warranty constitutes the entire agreement, and supersedes any and all prior
agreements between LOUD and Customer related to the subject matter hereof. No amendment,
modification or waiver of any of the provisions of this Product Warranty will be valid unless set forth in a
written instrument signed by the party to be bound thereby.
Correct Disposal of this product: This symbol indicates that this product should not be disposed of with your household waste, according to the WEEE
Directive (2002/96/EC) and your national law. This product should be handed over to an authorized collection site for recycling waste electrical and
electronic equipment (EEE). Improper handling of this type of waste could have a possible negative impact on the environment and human health due
to potentially hazardous substances that are generally associated with EEE. At the same time, your cooperation in the correct disposal of this product will
contribute to the effective usage of natural resources. For more information about where you can drop off your waste equipment for recycling, please
contact your local city office, waste authority, or your household waste disposal service.
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16220 Wood-Red Road NE • Woodinville, WA 98072 • USA
United States and Canada: 800.898.3211
Europe, Asia, Central and South America: 425.487.4333
Middle East and Africa: 31.20.654.4000
E-mail: [email protected]
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