Mackie Stereo Amplifier HM 54 User Manual

 
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Table of Contents  
information about this and other Mackie products.  
Part No. 0016044 Rev. A 07/05  
©2005 LOUD Technologies Inc. All Rights Reserved.  
3
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Introduction  
HOW TO USE THIS MANUAL  
We know that many of you can’t wait to get your  
new headphone amp hooked up, and you’re probably  
not going to read the manual first (sigh!). So the first  
section after this introduction is a Quick-Start Guide  
called “Getting Started” to help you get the HM-54 set  
up fast so you can start using it right away. Right after  
that are the ever popular hook-up diagrams that show  
typical setups for live sound and recording.  
Thank you for choosing a Mackie HM-54 Four-Channel  
Headphone Amplifier. This 1U rackmount unit features  
left and right TRS main inputs, as well as left and right  
TRS “direct inputs” on each of the four channels.  
The front panel provides an input select switch for  
each channel, allowing you to choose between the main  
stereo mix or the stereo “direct input.” In addition,  
each channel has its own headphone level control and  
two headphone jacks, one on the front for easy access  
and one on the back panel for hard-wired rackmount  
installations.  
Then, when you have time, read the Features  
Description section. This describes every knob, button,  
and connection point on the HM-54.  
Throughout this section you’ll find illustrations with  
each feature numbered. If you want to know more  
about a feature, simply locate it on the appropriate  
illustration, notice the number attached to it, and find  
that number in the nearby paragraphs.  
The HM-54 provides four separate headphone mixes,  
each of which can be switched between the main stereo  
mix or a custom mix, perhaps from a pair of subgroup  
outputs on the mixer, routed to the left and right phones  
input on the HM-54.  
This icon marks information that  
is critically important or unique to  
the HM-54. For your own good, read  
them and remember them. They will  
be on the final test.  
A Main Phones input jack allows you to use the  
headphone output on the mixer as the main input to  
the HM-54 instead of a left and right line-level output.  
A Main Input Level control is used to adjust the overall  
main input level.  
This icon leads you to in-depth  
explanations of features and practical  
tips. While not mandatory, they  
usually have some valuable nugget of  
information.  
The rugged construction of the HM-54 makes it a  
roadworthy companion to your arsenal of gear either  
inside or outside of a rack.  
A PLUG FOR THE CONNECTOR SECTION  
Appendix B is a section on connectors: balanced  
connectors, unbalanced connectors, and the phones  
connectors used on the HM-54.  
More resources on our website at www.mackie.com.  
THE GLOSSARY: A Haven of Non-Techiness for  
the Neophyte  
The “Glossary of Terms” is a fairly comprehensive  
dictionary of pro-audio terms. If terms like “clipping,”  
“noise floor,” or “unbalanced” leave you blank, refer to  
this glossary for a quick explanation.  
Please write your serial number here for future  
reference (i.e., insurance claims, tech support,  
return authorization, etc.)  
ARCANE MYSTERIES ILLUMINATED  
“Arcane Mysteries” discusses some of the down ‘n’ dirty  
practical realities of microphones, fixed installations,  
grounding, and balanced versus unbalanced lines. It’s a  
goldmine for the neophyte, and even the seasoned pro  
might learn a thing or two.  
Purchased at:  
Date of purchase:  
HM-54  
4
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Getting Started  
READ THIS PAGE!!  
Even if you’re one of those people  
4. With music going through the main mix, don the  
headphones for headphone amp 1 and S-L-O-W-L-Y  
turn up the LEVEL control on the front panel for  
the corresponding headphone amp. Adjust for a  
comfortable listening level.  
who never reads manuals, all we ask  
is that you read this page now before  
you begin using the HM-54. You’ll be  
glad you did!  
Note: If the volume gets really loud, really fast, turn  
down the MAIN INPUT LEVEL control until you  
can turn up the headphone amp LEVEL control at  
least halfway. Conversely, if you have to turn the  
headphone amp LEVEL control all the way up, turn  
up the MAIN INPUT LEVEL control a little more.  
Zero the Controls  
1. Turn down all the INPUT LEVEL controls.  
2. Set all push button switches to their “out” positions.  
3. Turn the POWER switch off.  
5. Push in the SOURCE select switch on headphone  
amp 1 and S-L-O-W-L-Y turn up the master  
subgroup or aux send level control feeding the  
DIRECT INPUT to headphone amp 1. Adjust for  
a comfortable listening level, equivalent to the  
volume level of the main mix.  
Connections  
1. Connect the left and right outputs from your mixer  
to the LEFT and RIGHT MAIN LINE INPUTS on the  
rear of the HM-54.  
6. Repeat for headphone amps 2-4.  
2. Connect any specific outputs (mix buses, subgroups,  
or aux sends can be used, or a direct output from  
a specific device will also work) to the desired  
headphone amp LEFT and RIGHT DIRECT INPUT.  
7. Now the individual performers can tweak their own  
headphone mixes to suit their individual tastes.  
Other Nuggets of Wisdom  
3. Plug in four sets of headphones to the front of the  
unit. If you are hard-wiring the installation, you  
may want to use the rear output jacks.  
Always turn the HM-54 off before making or  
changing connections.  
4. Connect the detachable linecord to the AC socket  
on the back, connect it to an AC outlet properly  
configured for your particular model, and turn on  
the HM-54’s power switch.  
When you shut down your equipment, turn off the  
amplifiers first. When powering up, turn on the  
amplifiers last.  
Never listen to loud music for prolonged periods.  
Please see the Safety Instructions on page 2 for  
information on hearing protection.  
Set the Levels  
1. On your mixing console, get a reasonable stereo mix  
going.  
Save the shipping box! You may need it someday,  
and you don’t want to have to pay for another one.  
2. Using the subgroup or aux send that you have  
connected to headphone amp 1’s direct inputs,  
create a unique headphone mix. Leave the master  
subgroup or aux send level control all the way  
down.  
That’s it for the “Getting Started” section. Next comes  
the “Hookup” section that shows you some typical ways  
that you might use the HM-54 in real applications. After  
that, you can take the grand tour of the HM-54, with  
descriptions of every knob, button, input, and output.  
We encourage you to take the time to read all of the  
feature descriptions, but at least you know it’s there if  
you have any questions.  
3. Turn the MAIN INPUT LEVEL halfway up to the  
center detent position. This is just a starting point.  
We can adjust it later, if necessary.  
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Hookup Diagrams  
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HM-54 Live Sound Application  
This illustrates using the HM-54 with an Onyx  
400F studio preamp in a recording application.  
The microphones and instruments are connected  
to the 400F and tracked to the DAW via the  
FireWire connection. Separate stereo headphone  
mixes are returned from the DAW over the  
FireWire connection using the DAW’s stereo auxes,  
and connected to the Phones Inputs on the HM-54  
via the eight analog outputs on the 400F.  
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HM-54 Recording Application with Onyx 400F  
6
HM-54  
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This example demonstrates how to use an Onyx 1640 mixer with the optional FireWire card in  
a recording application. Four aux sends from the 1640 provide four separate mono headphone  
mixes to the HM-54. The Phones output from the 1640 is connected to the Main Phones Input  
on the HM-54, allowing the talent to listen to either the same mix as the engineer in the control  
room (i.e., stereo return from the DAW for overdubbing), or to their own individual headphone  
mix (tracking). If the talent and engineer are in the same room, each musician can adjust their  
own headphone mix on the Onyx mixer by tweaking their own aux send.  
HM-54 Recording Application with Onyx 1640  
7
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HM-54 Features  
Front Panel  
All four headphone amplifiers share the same features:  
3. SOURCE Select Switch  
Dual-sources for each channel  
This switch allows you to select either the main mix  
input signal or the direct input signal for the headphone  
amp source.  
Individual front panel level controls  
Front and rear panel phone outputs for each channel  
Balanced inputs  
CAUTION: Make sure the main mix  
input signal and the direct input  
signal are roughly equivalent in  
1. MAIN INPUT LEVEL  
volume before switching between  
the two. If you have the headphone  
amp LEVEL control [4] adjusted for one, and the other  
signal is considerably louder, you could damage your  
hearing. Follow the procedure described in “Set the  
Levels” on page 5.  
This adjusts the main mix input signal level coming  
into the HM-54 LINE INPUT and PHONES INPUT jacks  
on the rear panel.  
2. PHONES Jack  
Plug your headphones into this jack. It carries the  
same signals that appear on the rear panel PHONES  
OUTPUT jacks [8].  
4. LEVEL Control  
This adjusts the volume for each individual  
headphone output. It affects both PHONES OUTPUT  
jacks (front and rear panel).  
You can also connect an in-ear monitor (IEM) system to  
the PHONES jack to provide an individual monitor mix.  
Note: Since the PHONES output delivers a higher signal  
level than a standard line-level output, you may need to 5. Power Switch  
turn thePHONES LEVEL control down more than usual.  
This one is self-explanatory. When the power switch is  
turned ON (up), power is supplied to the HM-54 and the  
power ON indicator lights up.  
Note: Plugging headphones into the front panel  
PHONES jack automatically disconnects the signal from  
the rear panel PHONES jack.  
WARNING: The headphone amps  
are designed to drive any standard  
headphones to a very loud level.  
We’re not kidding! They can cause  
permanent hearing damage. Even  
intermediate levels may be painfully  
loud with some headphones.  
BE CAREFUL! Always start with the PHONES level  
turned all the way down before connecting headphones  
to the PHONES jack. Keep it down until you’ve put on  
the headphones. Then turn it up slowly. Why? Always  
remember: “Engineers who fry their ears, find  
themselves with short careers.”  
1
2
3
4
HEADPHONE MIXER/AMPLIFIER  
HM-54  
PHONES  
PHONES  
PHONES  
PHONES  
MAIN  
MAIN  
MAIN  
MAIN  
DIRECT  
DIRECT  
DIRECT  
DIRECT  
ON  
O O  
MAX  
O O  
MAX  
O O  
MAX  
O O  
MAX  
O O  
MAX  
MAIN INPUT  
LEVEL  
SOURCE  
LEVEL  
SOURCE  
LEVEL  
SOURCE  
LEVEL  
SOURCE  
LEVEL  
8
HM-54  
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9. LEFT and RIGHT MAIN INPUT  
Rear Panel  
These 1/4" TRS jacks accept a balanced or unbalanced  
line-level input signal. This is the signal that you select  
when you leave the SOURCE select switch [3] on the  
front panel in the out position, so connect the main mix  
output from the mixer to these inputs.  
The rear panel is where you make all your analog audio  
connections to the HM-54 (except for the convenient  
additional headphone jacks on the front).  
6. IEC Power Receptacle  
The 1/4" TRS inputs are wired as follows:  
Sleeve = Shield or ground  
This is a standard 3-prong IEC power connector.  
Connect the detachable linecord (included in the box  
with your HM-54) to the power receptacle, and plug  
the other end of the linecord into an AC outlet properly  
configured for your particular model.  
Tip = Positive (+ or hot)  
Ring = Negative (– or cold)  
If you are connecting a mono input signal to these  
inputs, use a Y-Cord splitter to connect the signal to  
both inputs (otherwise you will only hear the effects  
in one side of the headphones). See “Mults and Y’s” in  
Appendix B for more info.  
7. LEFT and RIGHT PHONES INPUT  
These 1/4" TRS jacks accept a balanced or  
unbalanced line-level input signal. This is the signal  
that you select when you push in the SOURCE select  
switch [3] on the front panel, so connect the individual  
headphone mix from the mixer to these inputs.  
10. MAIN PHONES INPUT  
This is a 1/4" TRS headphone input jack. This allows  
you to use the headphone output from your mixer to  
provide the main mix signal to the HM-54. Simply use a  
TRS-to-TRS cable to connect the PHONES output from  
the mixer to this input on the HM-54.  
The 1/4" TRS inputs are wired as follows:  
Sleeve = Shield or ground  
Tip = Positive (+ or hot)  
Ring = Negative (– or cold)  
Note: Plugging the main mix signal into the MAIN  
PHONES INPUT jack automatically disconnects the  
LEFT and RIGHT MAIN INPUT [9] jacks.  
If you are connecting a mono input signal to these  
inputs, use a Y-Cord splitter to connect the signal to  
both inputs (otherwise you will only hear the signal  
in one side of the headphones). See “Mults and Y’s” in  
Appendix B for more info.  
8. PHONES OUTPUT  
This is another headphone output that duplicates the  
PHONES [2] output on the front panel. Typically, you  
would use these when installing the HM-54 in a rack  
and hard-wiring the headphone outputs to a patch panel  
in the rack.  
Note: Plugging headphones into the front panel  
PHONES jack automatically disconnects the signal from  
the rear panel PHONES jack.  
PHONES  
INPUT  
4
PHONES  
INPUT  
3
PHONES  
INPUT  
2
PHONES  
INPUT  
1
MAIN  
LINE INPUT  
LEFT RIGHT  
HM-54  
OUTPUT  
PHONES  
OUTPUT  
PHONES  
OUTPUT  
PHONES  
OUTPUT  
PHONES  
PHONES  
INPUT  
LEFT  
RIGHT  
LEFT  
RIGHT  
LEFT  
RIGHT  
LEFT  
RIGHT  
~120VAC  
50/60 HZ 12W  
.25A/250V  
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Appendix A: Service Information  
Bad Output  
Warranty Service  
If you are listening to a PHONES OUTPUT [8] on  
Details concerning Warranty Service are spelled out in  
the Warranty section on page 15.  
the rear panel, make sure that nothing is plugged  
into the corresponding PHONES out on the front  
panel.  
If you think your HM-54 has a problem, please do  
everything you can to confirm it before calling for  
service. Doing so might save you from the deprivation of  
your headphone amp and the associated suffering.  
If only one side of the stereo headphones is working,  
make sure you have a signal at both inputs. There  
must be a signal present at both inputs [7][9][10]  
to get a signal in both sides of the headphone  
output.  
These may sound obvious to you, but here are some  
things you can check. Read on.  
Bad Sound  
Is the input connector plugged completely into the  
jack?  
Troubleshooting  
No Power  
Is it loud and distorted? Make sure the input LEVEL  
[4] control for the channel is set correctly. Reduce  
the signal level on the input source if possible.  
Our favorite question: Is it plugged in?  
Make sure the power cord is securely seated in the  
IEC socket [6] and plugged all the way into the AC  
outlet.  
If possible, listen to the signal with headphones  
plugged into the input source device. If it sounds  
bad there, it’s not the HM-54 causing the problem.  
Make sure the AC outlet is live (check with a tester  
or lamp).  
Noise/Hum  
Is the POWER [5] switch on? Make sure the  
POWER switch on the front panel is in the ON  
position (up) and the power LED is lit.  
If connecting an unbalanced source to the balanced  
inputs on the HM-54 using a TS-to-TS 1/4" cable, it  
could cause a ground loop. Refer to “Unbalancing  
a Line” for more info on connecting an unbalanced  
source to a balanced input.  
Are all the lights out in your building? If so, contact  
your local power company to get power restored.  
Sometimes it helps to plug all the audio equipment  
into the same AC circuit so they share a common  
ground.  
If the power LED is not illuminated on the front  
panel, and you are certain that the AC outlet is live,  
it will be necessary to have your HM-54 serviced.  
There are no user serviceable parts inside. Refer to  
“Repair” at the end of this section to find out how to  
proceed.  
Bad Channel  
Is the input LEVEL control [4] for the channel  
turned up?  
Is the signal source turned up? Make sure the signal  
level from the selected input source is high enough  
to drive the line-level inputs on the HM-54.  
Try the same source signal in another channel, set  
up exactly like the suspect channel.  
10  
HM-54  
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Repair  
Service for Mackie products is available at a factory-  
authorized service center. Service for Mackie products  
living outside the United States can be obtained through  
local dealers or distributors.  
6. Write the Service Request Number in BIG PRINT on  
top of the box. Units sent to us without the Service  
Request Number will be refused.  
7. Tech Support will tell you where to ship the  
preamplifier for repair. We suggest insurance for all  
forms of cartage.  
If your HM-54 needs service, follow these instructions:  
1. Review the preceding troubleshooting suggestions.  
Please.  
8. We’ll try to fix the HM-54 within three to five  
business days. Ask Tech Support for the latest  
turn-around times when you call for your Service  
Request Number. The HM-54 must be packaged in  
its original packing box, and must have the Service  
Request Number on the box. Once it’s repaired, we’ll  
ship it back the same way in which it was received.  
This paragraph does not necessarily apply to non-  
warranty repair.  
2. Call Tech Support at 1-800-898-3211, 7 am to 5 pm  
PST, to explain the problem and obtain a Service  
Request Number. Have your HM-54’s serial number  
ready.  
You must have a Service Request Number before  
you can obtain factory-authorized service.  
3. Keep this owner’s manual and the detachable  
linecord. We don’t need them to repair the HM-54.  
Note: You must have a sales receipt from an  
Authorized Mackie Dealer to qualify for a warranty  
repair.  
4. Pack the preamplifier in its original package,  
including endcaps and box. This is VERY  
IMPORTANT. When you call for the Service  
Request Number, please let Tech Support know if  
you need new packaging. Mackie is not responsible  
for any damage that occurs due to non-factory  
packaging.  
5. Include a legible note stating your name, shipping  
address (no P.O. boxes), daytime phone number,  
Service Request Number, and a detailed description  
of the problem, including how we can duplicate it.  
Need Help?  
You can reach a technical support representative  
Monday through Friday  
from 7 AM to 5 PM PST at:  
1-800-898-3211  
After hours, visit www.mackie.com and click Support,  
or email us at: [email protected]  
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Appendix B: Connections  
1/4" TRS Phone Plugs and Jacks Unbalancing a Line  
“TRS” stands for Tip-Ring-Sleeve, the three connection  
points available on a stereo 1/4" or balanced phone  
jack or plug. TRS jacks and plugs are used for balanced  
signals and stereo headphones.  
In most studio, stage, and sound reinforcement situations,  
there is a combination of balanced and unbalanced inputs  
and outputs on the various pieces of equipment. This  
usually will not be a problem in making connections.  
When connecting a balanced output to an  
unbalanced input, use a 1/4" TRS plug on the  
balanced end and a 1/4" TS plug on the unbalanced  
end. Be sure the signal high (hot) connections  
are wired to each other (tip to tip), and that the  
balanced signal low (cold, ring) goes to the ground  
(earth, shield) connection at the unbalanced  
input. In most cases, the balanced ground (earth)  
will also be connected to the ground (earth) at  
the unbalanced input. If there are ground-loop  
problems, this connection may be left disconnected  
at the balanced end.  
Balanced Mono  
RING SLEEVE  
TIP  
SLEEVE RING TIP  
RING  
TIP  
SLEEVE  
1/4" TRS Balanced Mono Wiring:  
Sleeve = Shield  
Tip = Hot (+)  
Ring = Cold (–)  
When connecting an unbalanced output to  
a balanced input, use a 1/4" TS plug on the  
unbalanced end and a 1/4" TRS plug on the  
balanced end. Be sure that the signal high (hot)  
connections are wired to each other (tip to tip).  
The unbalanced ground (earth) connection should  
be wired to the low (cold, ring) and the ground  
(earth, shield) connections of the balanced  
input. If there are ground-loop problems, try  
disconnecting the unbalanced ground (earth)  
connection from the balanced input ground  
(earth) connection, leaving the unbalanced  
ground connected to the balanced input low (cold)  
connection only.  
Stereo Headphones  
RING SLEEVE  
TIP  
SLEEVE RING TIP  
RING  
TIP  
SLEEVE  
1/4" TRS Stereo Unbalanced Wiring:  
Sleeve = Shield  
Tip = Left  
Ring = Right  
1/4 TS Phone Plugs and Jacks  
"
In some cases, you may have to make up special  
adapters to interconnect your equipment. For example,  
you may need a balanced XLR female connected to an  
unbalanced 1/4" TS phone plug. Many common adapters  
can be found at your local electronics supply store.  
“TS” stands for Tip-Sleeve, the two connection points  
available on a mono 1/4" phone jack or plug. They are  
used for unbalanced signals like the high-impedance  
instrument inputs on the Onyx 400F.  
SLEEVE  
SLEEVE  
TIP  
Mults and “Y”s  
TIP  
A mult or “Y” connector allows you to route one output  
to two or more inputs by simply providing parallel  
wiring connections. You can make “Y”s and mults for the  
outputs of both unbalanced and balanced circuits.  
TIP  
SLEEVE  
1/4" TS Unbalanced Wiring:  
Sleeve = Shield  
Tip = Hot (+)  
Y-Cord Splitter  
12  
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Appendix C: Technical Info  
HM-54 Specifications  
Frequency Response  
AC Power Requirements  
Main Input to any Output (Level @ 12 o’clock):  
Power Consumption: 12 watts  
U.S. and Canada: 120 VAC, 50/60 Hz  
+0, –1 dB, 20 Hz to 20 kHz  
AC Connector:  
3-pin IEC 250 VAC  
Distortion (THD & IMD)  
Physical Dimensions and Weight  
Main Input to any Output (@ +4 dBu output):  
THD+N: < 0.01%, 20 Hz to 20 kHz BW,  
1 kHz input @ +4 dBu, Level @ 12 o’clock  
Height:  
Width:  
1.75 in/44 mm  
17.0 in/432 mm (main body of unit)  
19.0 in/483 mm (with rack ears)  
5.3 in/135 mm  
Depth:  
Noise  
Residual Output Noise:  
Weight:  
5.5 lb/2.5 kg  
–103 dBu (all outputs off, 600Ω load)  
–97 dBu (all outputs @ 12 o’clock, 600Ω load)  
LOUD Technologies Inc. is always striving to improve our prod-  
ucts by incorporating new and improved materials, components,  
and manufacturing methods. Therefore, we reserve the right to  
change these specifications at any time without notice.  
Input Sensitivity  
0 dBu = 1.5 mW/600Ω (Level @ 12 o’clock)  
“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 hold-  
ers, and are hereby acknowledged.  
Input Gain Control Range  
Main Input to any Output:  
4 dB maximum  
©2005 LOUD Technologies Inc. All Rights Reserved.  
Rated Output  
Maximum Rated Output (1 kHz):  
100 mW ±0.5 dB @ 1% THD  
(60Ω load, all channels driven)  
140 mW ±0.5 dB @ 1% THD  
(60Ω load, one channel driven)  
150 mW ±0.5 dB @ 1% THD  
(240Ω load, all channels driven)  
195 mW ±0.5 dB @ 1% THD  
(240Ω load, one channel driven)  
17.0 in/432 mm  
WEIGHT  
5.5 lb/  
2.5 kg  
19.0 in/483 mm  
1
2
3
4
HM-54 HEADPHONE MIXER/AMPLIFIER  
PHONES  
PHONES  
PHONES  
PHONES  
MAIN  
MAIN  
MAIN  
MAIN  
DIRECT  
DIRECT  
DIRECT  
DIRECT  
ON  
O O  
MAX  
O O  
MAX  
O O  
MAX  
O O  
MAX  
O O  
MAX  
MAIN INPUT  
LEVEL  
SOURCE  
LEVEL  
SOURCE  
LEVEL  
SOURCE  
LEVEL  
SOURCE  
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13  
Owner’s Manual  
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HM-54 Block Diagram  
14  
HM-54  
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HM-54 Limited Warranty  
Please keep your sales receipt in a safe place.  
F. Any products returned to one of the LOUD Technologies  
A. LOUD Technologies Inc. warrants all materials,  
factory-authorized service centers and deemed eligible for  
repair or replacement under the terms of this warranty will  
be repaired or replaced within thirty days of receipt. LOUD  
Technologies and its authorized service centers may use  
refurbished parts for repair or replacement of any product.  
Products returned to LOUD Technologies that do not meet the  
terms of this Warranty will be not be repaired unless payment  
is received for labor, materials, return freight, and insurance.  
Products repaired under warranty will be returned freight  
prepaid by LOUD Technologies to any location within the  
boundaries of the USA.  
workmanship and proper operation of this product for a period  
of one year from the original date of purchase. If any defects  
are found in the materials or workmanship or if the product  
fails to function properly during the applicable warranty  
period, LOUD Technologies, at its option, will repair or replace  
the product. This warranty applies only to equipment sold  
and delivered within the U.S. by LOUD Technologies Inc. or  
its authorized dealers.  
B. Failure to register online or return the product registration  
card will not void the one-year warranty.  
C. Service and repairs of Mackie products are to be  
performed only at a factory-authorized facility (see D below).  
Unauthorized service, repairs, or modification will void this  
warranty. To obtain repairs under warranty, you must have a  
copy of your sales receipt from the authorized Mackie dealer  
where you purchased the product. It is necessary to establish  
purchase date and determine whether your Mackie product is  
within the warranty period.  
G. LOUD Technologies warrants all repairs performed  
for 90 days or for the remainder of the warranty period.  
This warranty does not extend to damage resulting from  
improper installation, misuse, neglect or abuse, or to exterior  
appearance. This warranty is recognized only if the inspection  
seals and serial number on the unit have not been defaced or  
removed.  
H. LOUD Technologies assumes no responsibility for the  
quality or timeliness of repairs performed by an authorized  
service center.  
D. To obtain factory-authorized service:  
1. Call Mackie Technical Support at 800/898-3211, 7  
AM to 5 PM Monday through Friday (Pacific Time) to get  
a Service Request Number. Products returned without a  
Service Request Number will be refused.  
I. This warranty is extended to the original purchaser and to  
anyone who may subsequently purchase this product within  
the applicable warranty period. A copy of the original sales  
receipt is required to obtain warranty repairs.  
2. Pack the product in its original shipping carton. Also  
include a note explaining exactly how to duplicate the  
problem, a copy of the sales receipt with price and date  
showing, and your return street address (no P.O. boxes or  
route numbers, please!). If we cannot duplicate the problem  
or establish the starting date of your Limited Warranty, we  
may, at our option, charge for service time.  
J. This is your sole warranty. LOUD Technologies does not  
authorize any third party, including any dealer or sales  
representative, to assume any liability on behalf of LOUD  
Technologies or to make any warranty for LOUD Technologies  
Inc.  
K. THE WARRANTY GIVEN ON THIS PAGE IS THE SOLE  
WARRANTY GIVEN BY LOUD TECHNOLOGIES INC.  
AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS  
AND IMPLIED, INCLUDING THE WARRANTIES OF  
3. Ship the product in its original shipping carton, freight  
prepaid to the authorized service center. The address of  
your closest authorized service center will be given to you  
by Technical Support.  
MERCHANTABILITY AND FITNESS FOR A PARTICULAR  
PURPOSE. THE WARRANTY GIVEN ON THIS PAGE SHALL BE  
STRICTLY LIMITED IN DURATION TO ONE YEAR FROM THE  
DATE OF ORIGINAL PURCHASE FROM AN AUTHORIZED  
MACKIE DEALER. UPON EXPIRATION OF THE APPLICABLE  
WARRANTY PERIOD, LOUD TECHNOLOGIES INC. SHALL  
HAVE NO FURTHER WARRANTY OBLIGATION OF ANY  
KIND. LOUD TECHNOLOGIES INC. SHALL NOT BE LIABLE  
FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL  
IMPORTANT: Make sure that the Service Request  
Number is plainly written on the shipping carton.  
E. LOUD Technologies reserves the right to inspect any  
products that may be the subject of any warranty claims before  
repair or replacement is carried out. LOUD Technologies may,  
at our option, require proof of the original date of purchase in  
the form of a dated copy of the original dealer’s invoice or sales DAMAGES THAT MAY RESULT FROM ANY DEFECT IN THE  
receipt. Final determination of warranty coverage lies solely  
with LOUD Technologies.  
MACKIE PRODUCT OR ANY WARRANTY CLAIM. Some states  
do not allow exclusion or limitation of incidental, special, or  
consequential damages or a limitation on how long warranties  
last, so some of the above limitations and exclusions may not  
apply to you. This warranty provides specific legal rights and  
you may have other rights which vary from state to state.  
15  
Owner’s Manual  
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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  
Fax: 425.487.4337 • www.mackie.com  
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