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Part No. SW0592 Rev. F 01/11
©2007-2011 LOUD Technologies Inc. All Rights Reserved.
7
Owner’s Manual
Owner’s Manual
Monitor 1 Monitor 2
• Please write the serial number for your studio monitor here
(all studio monitors if you have more than one) for future reference
(i.e., insurance claims, tech support, return authorization, etc.):
Purchased at:___________________________________ Date of Purchase:_____________
Monitor 3
A Few Words About THX™ pm3™
Certication
Nearly two decades ago, George Lucas turned a
passion for great sound into the world’s most accepted
and trusted solution for achieving it. The standard was
named THX (for Tomlinson Holman, who developed
the THX Sound System when he was the research and
technical director at Lucaslm Ltd.™ in the early 80s),
and today, with hundreds of thousands of home theater
customers and more than 3000 THX Certied movie
theaters enjoying its benets, the THX name has
become nothing short of legendary. Simply put: when
it comes to premium sound, no other name so closely
denes ‘quality’ for millions of movie-goers and home
theater enthusiasts alike.
Today, a new landscape is emerging. A landscape
comprised of hundreds of small, professional multi-
channel facilities, whose need for differentiation, expert
technical and marketing support, and a true, multi-
channel standard is becoming a competitive fact of life.
Again, THX has a singular solution and this time it’s
called THX pm3 Certication.
All facilities involved with mixing and/or monitoring
of multi-channel material should have the option to use
pm3. THX pm3 Certication is ideal for DVD mastering,
sweetening, and mixing; and is also perfect for facilities
doing work in broadcast, music, or multi-media
applications.
HR624 MK2 THX pm3 Certication
When we submitted the HR624 MK2s for THX pm3
Certication, they passed on the rst try with no
modications!
Anyone seeking THX Certication for their studio,
or striving to maintain THX standards, can use the
HR624 MK2s and rest assured that their facility is in
full compliance.
Contents
IMPORTANT SAFETY INSTRUCTIONS ........... 2
INTRODUCTION.................................................. 3
QUICK START ........................................................................... 4
REAR PANEL DESCRIPTION ..............................8
1. SIGNAL INPUTS................................................................8
2. INPUT SENSITIVITY ........................................................ 8
3. ACOUSTIC SPACE............................................................. 8
4. LOW FREQ FILTER ........................................................... 9
5. HIGH FREQ FILTER .......................................................... 9
6. POWER MODE................................................................10
7. Mains Input .....................................................................10
8. Passive Radiator .............................................................11
FRONT PANEL DESCRIPTION ..........................12
9. Power Switch ..................................................................12
10. Power Ring and Overload Indicator ......................12
PROTECTION CIRCUITS ....................................12
Overload Protect ..............................................................12
Thermal Protect ................................................................. 13
Integrated Magnetic Shielding ...................................... 13
Input Signal Wiring ...........................................................13
CARE AND CLEANING .......................................13
SERVICE INFO ......................................................14
Troubleshooting.................................................................14
Repair ....................................................................................15
TECHNICAL INFORMATION ........................... 16
HR624 MK2 Specications..................................................16
Graphs ...................................................................................17
HR624 MK2 Block Diagram .............................................18