On Point Audio OPA 15 Active User manual

On Point Audio, Inc.
OPA 15 ACTIVE USER MANUAL
The exclamation point within an equilateral triangle is intended to alert
the user to the presence of important operation and maintenance instructions.
The lightening flash with arrowhead symbol within an equilateral
triangle is intended to alert the user to the presence of uninsulated “dangerous
voltage” within the products enclosure that may be of sufficient magnitude to
constitute a risk of electric shock to persons.
The On Point Audio OPA 15 Active was designed to bring very high performance sound
reinforcement and very high output to size ratios. The OPA 15 Active was designed for
use in both portable and fixed installation indoor environments such as night clubs,
pubs, meeting halls and general live performance applications. The OPA 15 Active
features a unique “narrow profile” integrated woofer and enclosure design that provide
very high acoustic output with excellent sight line characteristics

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Specifications
Frequency Response:50 Hz – 18,000 Hz
Coverage Pattern:60oH X 40oV
Input/Thru Connections: 3 Pin XLR-type
(Pin 2 +)
Power:
Peak - Total System:2,000 Watts
Continuous- Total System:1000 Watts
Peak Low Frequency:1,000 Watts
Peak High Frequency:1,000 Watts
Continuous Low Frequency:500 Watts
Continuous High Frequency:500 Watts
AC Mains Power: Autoswitching 115 V AC to 230 V AC
(104VAC to 253VAC)
(50 Hz – 60 Hz)
Input to achieve rated output:1.5 V RMS
Max Acoustic Output (Peak): 131 dB*
Rigging:M10 Stainless Steel (7 Points)
Supplied Accessories:AC Mains Cable 2 each
(3 pin USA and Euro)
Dimensions (H X W X D): 742 X 370 X 434 mm
29.2 X 14.6 X 17.1 inches
Weight (kg / lb): 29 kg / 64 lb
Operating temperature (C/F) 0C-43C / 32F- 110F
* NOTE: Max Acoustic Output is based on smoothed system response, not peak driver
response.

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Read all of the instructions included in this manual
Copies of this manual should be retained by the system’s installer AND end-user.
This manual must be read and understood and ALL warnings must be followed.
Follow all instructions to insure optimal product performance.
The OPA 15 Active is a convection-cooled device and it requires at least 6 inches (152
mm) of clearance behind the enclosure to allow the heat sink to adequately cool the
internal electronics.
DO NOT INSTALL NEAR ANY HEAT SOURCES!
Use ONLY the supplied AC Mains connector.
Protect the AC Mains power cord from being walked on or otherwise damaged and
inspect for damaged connections and damaged insulation.
The OPA 15 Active may be suspended. DO NOT SUSPEND ANY ITEMS OR OTHER
ENCLOSURES BELOW THE OPA 15 ACTIVE.
DO NOT SUBSTITUTE SUSPENSION HARDWARE.
SUSPENSION SHOULD BE ATTEMPTED BY A PROFESSIONAL THAT IS FAMILIAR
WITH LOCAL AND NATIONAL CODES AND SAFE SUSPENSION PRACTICES!
There are NO user-serviceable parts inside the enclosure. DO NOT REMOVE THE
AMPLIFIER MODULE! (See Service section for details OR contact On Point Audio.)
FCC STATEMENT
The OPA 15 Active has been tested and is compliant with the limits for Class B digital
devices, per Part 15 of the FCC rules. Test data is available from On Point Audio.

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INTRODUCTION
Thank you for purchasing the On Point Audio OPA 15 Active and for your faith in us and
our products. The OPA 15 Active will provide you many years of useful service with
proper use and care. Please read this manual completely and become familiar with the
design and operation of this advanced active speaker system.
CONTENTS
The OPA 15 Active system is shipped in one carton. The contents of the cartons are as
follows:
OPA 15 Active System
One OPA 15 Active, including a bi-amplified Class-D digital power amplifier system with
onboard Digital Signal Processing (DSP) and two each AC Mains cables.
RECOMMENDED ACCESSORIES
Although not supplied with the OPA 15 Active System, On Point Audio recommends
using the OPA 15 Active enclosures with a high-quality loudspeaker stand for use in
portable applications. On Point Audio also produces the OPA Sub Active when
additional low-frequency output and response is required. The OPA Sub Active includes
A 35 mm / 1.375 inch diameter mounting pole that allows the OPA 15 Active to be
safely elevated above the OPA Sub Active.
The OPA Sub Active’s mounting pole is NON-adjustable. DO NOT substitute poles.
Make sure that the OPA Sub Active is placed on a level surface.

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OTHER ACCESSORIES
On Point Audio also offers the Eye Bolt Kit that contains 4 x 304-grade stainless steel,
forged-shoulder eyebolts for suspending the OPA 15 Active.
FEATURES AND APPLICATIONS
The OPA 15 Active is a professional product and is designed to be used with a high-
quality mixing console. The OPA 15 Active does not provide any additional, user
selectable, equalization or gain. All equalization and gain functions should be provided
by the mixing console. This design concept enables gain stages to be limited, thus
reducing system noise as well as substantially reducing the possibility of gain stage
overloads.
On Point Audio does not feel that adding additional EQ and gain functions are
appropriate for truly professional products. The addition of redundant functions such as
EQ and gain are usually the cause of clipping, distortion and greatly-reduced system
performance. Any venue-specific equalization needs are best provided by high-quality
outboard devices or high-performance EQ sections found on professional quality mixing
consoles.
The OPA 15 Active features an onboard digital signal processor (DSP) that performs
analog to digital conversion, equalization, high-order crossover, delay and system
dynamics processing. The system’s dynamics processing consists of a
compressor/limiter function designed to provide ultra-fast threshold system protection
and maximized system dynamics.
SETUP AND USE OF THE OPA 15 ACTIVE
AC MAINS CONNECTION
Prior to connecting the AC mains cable, insure that the AC mains switch on the OPA 15
Active is in the OFF position.
On/Off Switch

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The OPA 15 Active will operate on AC mains voltages of 115 volts to 230 volts. The
required AC mains frequency is between 50 Hz and 60 Hz. The acceptable voltage
range is 104VAC to 253VAC.
The OPA 15 Active uses a standard IEC-type AC mains connector system. To mate the
AC mains cable with the AC mains connector on the amplifier, simply align the plug with
the panel’s connector and press the AC mains cable into place. Always support the
OPA 15 Active’s enclosure with one hand while performing this operation. The AC
mains connector is shown below. It is located on the lower portion of the OPA 15 Active
input panel.
NOTE: The OPA 10 Active is supplied with two AC Mains cables. Select the cable with
the proper termination for the country specific mating receptacle!
AC Mains panel connector
To disconnect the cable end of the AC mains connector pull back on the molded plug at
the end of the cable, not the cable itself.
NOTE: ALWAYS turn off the AC mains power BEFORE attempting to disconnect the
AC mains cable from the OPA 15 Active amplifier module!
DO NOT CONNECT THE AC MAINS END OF THE AC MAINS CABLE IN AN AREA
THAT IS WET OR SUBJECT TO CONDENSATION OR DAMP CONDITIONS!
Once the AC mains cable is securely connected to both the amplifier and AC mains
supply, the OPA 15 Active enclosure may be turned on. It is good practice to make
certain that the audio levels on the mixer’s output (or other source output) are reduced
or muted prior to applying power to the OPA 15 Active.
NOTE: When power is applied to the OPA 15 Active and the unit is turned on, there is
approximately a 5 to 15 second delay before the pilot light illuminates.

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Pilot Light
NOTE: If the pilot light does not illuminate within 30 seconds the unit may be in a
FAULT CONDITION. If this occurs, the unit should be returned to On Point Audio for
evaluation.
THERE ARE NO USER-SERVICABLE PARTS INSIDE. DO NOT REMOVE THE
AMPLIFIER MODULE! (see the section below “Replacement of Components” for more
detailed information)
AUDIO CONNECTIONS
The OPA 15 Active includes both a male and female XLR-type connectors. Any
standard XLR-type cable end connectors may be used.
The image below illustrates the top portion of the OPA 15 Active’s input plate. Both the
audio input and audio thru connectors are shown.

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Input Thru
An audio level of 1.5 V RMS will drive the OPA 15 Active’s amplifier to full power.
The OPA 15 Active input section also allows for “paralleling” multiple OPA 15 Active or
other powered systems. This function is achieved by using the output/thru XLR-type
connector located next to the input XLR-type connector on the OPA 15 Active’s
amplifier module.
RIGGING AND SUSPENSION OF THE OPA 15 Active
The OPA 15 Active features 7 xM10 (metric) stainless steel rigging points. The
enclosure may be suspended for either temporary installation or permanent installation.
There are four M10 points on the top of the enclosure, two on the bottom of the
enclosure and a single “pull-up” point on the bottom portion on the rear of the enclosure.
WARNING: The single M10 point on the bottom portion of the rear of the enclosure is
NOT intended for suspension of the enclosure and should NOT be used for suspension.
The M10 point on the rear of the enclosure is designed for pull up and aiming ONLY!
The M10 rigging points are shown in the images below.

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Rigging Points shown above
The OPA 15 Active may be mounted to any high-quality loudspeaker stand with a
standard 1.375 inch (35 mm) diameter mounting pole. The mounting pole MUST be
located on a level surface that is capable of safely supporting the weight of both the
loudspeaker stand and the OPA 15 Active.
DO NOT ADD OR SUSPEND ANY ITEMS TO THE OPA 15 Active OR
LOUDSPEAKER STAND.
WARNING
DO NOT ATTEMPT TO SUSPEND ON POINT AUDIO PRODUCTS WITHOUT
UNDERSTANDING LOCAL AND NATIONAL CODES THAT APPLY TO OVERHEAD
SUSPENSION OF PRODUCTS.
DO NOT ATTEMPT TO SUSPEND ON POINT AUDIO PRODUCTS UNLESS YOU
ARE A PROFESSIONAL WITH KNOWLEDGE OF LOCAL AND NATIONAL CODES
RELATED TO SAFE SUSPENSION AND ARE EXPERIENCED IN SUSPENDING
PRODUCTS OVERHEAD.

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ON POINT AUDIO IS NOT RESPONSIBLE FOR FAILURES RELATED TO NON-
COMPLIANCE WITH LOCAL AND NATIONAL CODES AND SAFE SUSPENSION
PRACTICE.
DO NOT ATTEMPT TO SUSPEND THIS PRODUCT WITHOUT READING AND
UNDERSTANDING THE DOCUMENT “Suspension of On Point Audio Products”. THIS
DOCUMENT MAY BE FOUND AT: www.onpointaudio.com
ALL ASSOCIATED RIGGING IS THE RESPONSIBILITY OF OTHERS.
USING THE OPA 15 Active (Application and Trouble Shooting Tips)
The OPA 15 Active is a high-quality professional sound reinforcement system designed
for use in indoor applications. Some basic precautions will insure long-term reliability.
EQUALIZATION AND GAIN
The OPA 15 Active has all the required equalization and gain functions included in its
internal Digital Signal Processor (DSP). Both the equalization and gain functions have
been optimized for flat frequency response and maximized system dynamics. The OPA
15 Active does not have user-settable external gain or EQ.
All system gain should be set via the outboard mixing console. The mixing console
should be capable of providing sufficient output levels to supply the necessary voltage
levels to drive the OPA 15 Active to full power and still insure adequate headroom in the
mixing console.
The OPA 15 Active will produce full power with a 1.5 V RMS input signal.
If additional equalization is required, care should be taken to avoid excessive EQ in any
frequency band, but particularly at low frequencies. Excessive equalization can produce
“band selective” clipping and distortion. All EQ boost levels should be monitored if
system distortion is present.
Applications that require excessive low frequency equalization are almost always an
indication that a sub woofer is required. On Point Audio offers the OPA Sub Active. The
OPA Sub Active is a companion product for use with the OPA 15 Active and it will
provide substantial low-frequency acoustic output.
DISTORTED SOUND
When input levels to the OPA 15 Active exceed 1.5 V RMS, the internal dynamics
processing functions will engage and provide protection for the system. However, it is
still possible to “overdrive” the input section of the enclosure. If distorted sound is
present the following steps should be taken:

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1. Verify that the mixer’s output is not clipping or overloaded. If the output metering
section of the mixing console is continuously in the “red” then the output level
should be reduced. (occasional “red” indications are usually fine and are
dependent on the mixing console’s output capability).
2. Verify that excessive equalization is not present anywhere in the signal chain.
3. Verify that AC mains levels are within the required range.
Voltage measurements on the AC Mains should be performed by a licensed electrician
or individual trained in making high-voltage measurements.
NO SOUND
1. Verify that signal is present on the input of the OPA 15 Active.
The OPA 15 Active also includes a “signal present” indicator and is positioned
immediately below the Pilot light. This indicator will illuminate when an audio
signal is present at the input to the system.
The threshold is approximately -25dBV.
2. Verify that there is AC Mains voltage on the AC Mains input to the OPA 15 Active
3. If AC Mains voltage is present, verify that the OPA 15 Active’s fuse is not blown.
NOTE: IF THE FUSE IS BLOWN REPLACE ONLY WITH THE SAME TYPE OF FUSE.
THIS FUSE TYPE IS NOTED ON THE INPUT PANEL NEAR THE FUSE HOLDER.
THE LOCATION OF THE FUSE HOLDER IS SHOWN BELOW. NOTE: 115Vrms AC
fuse shown below for example only. Fuse rating will differ based on AC mains voltage.
FUSE HOLDER (located between the on/off switch and ac mains)

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PRODUCT SERVICE
There are NO user-serviceable parts inside the OPA 15 Active amplifier. However, the
amplifier does need to be removed in case of compression driver service. See notes
below for compression driver service and repair (Replacement of Components).
The OPA 15 Active’s amplifier module MUST be serviced by a company authorized by
On Point Audio.
Replacement of Components
REPLACEMENT OF COMPONENTS MUST BE PERFORMED BY A QUALIFIED
TECHNICIAN OR ONE KNOWLEDGABLE IN THE REPLACEMENT OF
TRANSDUCER COMPONENTS!
DO NOT ATTEMPT ANY REPAIRS UNLESS THE OPA 15 ACTIVE AMPLIFIER HAS
BEEN DISCONNECTED FROM THE AC MAINS SOURCE!
In the event of woofer failure, the woofer may be accessed by removing the front grille
and then removing the woofer. This should be done by a qualified technician or
contractor. There is no need to remove the amplifier panel in the event of a woofer
failure.
In the event of a compression driver failure the amplifier module must be removed to
gain access to the compression driver.
USE EXTREME CARE WHEN HANDLING THE OPA 15 ACTIVE’S AMPLIFIER
MODULE. THE COMPONENTS ARE FRAGILE AND THE MODULE MUST NOT BE
SET DOWN ON THE COMPONENT SIDE OR DAMAGE WILL OCCUR!
Care should be exercised when disconnecting the amplifier module from both the
woofer and the compression driver. Be sure to observe the wiring polarity of both the
woofer and the compression driver.
The compression driver is a “screw on” type and is easily removed once the amplifier
module has been removed. Once the compression driver diaphragm has been replaced
and re-mounted on the horn, the amplifier may be re-mounted.
Insure that both the woofer and compression driver are wired with the correct polarity
observed.
On Point Audio, Inc. 6204 Gardendale Dr. Nashville, TN 37215 Phone: [phone] www.onpointaudio.com