Bogen 7XL Installation Manual
Model 7XL
Power Amplifier
Installation/Use and Software Manual
For manual, software and DSP preset updates visit:
http://www.nearspeakers.com/xl-amplifier-dsp-files.html
© 2018 Bogen Communications, Inc.
All rights reserved.
740-00007C 1802
Every effort was made to ensure that the information in this
manual was complete and accurate at the time of printing,
however, all information is subject to change.
WARNING: To Reduce the Risk of Fire or Electric Shock,
Do Not Expose this Apparatus to Rain or Moisture.
Always comply with the following basic safety precautions when installing and using the unit:
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. DO NOT use this apparatus near water.
6. Clean only with dry cloth.
7. DO NOT block any ventilation openings. Install in
accordance with the manufacturer’s instructions.
8. DO NOT install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including other amplifiers) that produce heat.
9. DO NOT defeat the safety purpose of the polarized or
grounding-type plug. A polarized plug has two blades
with one wider than the other. A grounding-type plug
has two blades and a third grounding prong. The wide
blade, or the third prong, are provided for your safety.
If the provided plug does not fit into your outlet, consult
an electrician for replacement of the obsolete outlet.
10. Protect the power cord from being walked on and/or
pinched, particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.
11. Only use attachments/accessories which are specified
by the manufacturer.
12. Unplug this apparatus during lightning storms or when
unused for long periods of time.
13. Refer all servicing to qualified service personnel.
Servicing is required when the apparatus has been
damaged in any way, such as power-supply cord or
plug is damaged, liquid has been spilled or objects
have fallen into the apparatus, the apparatus has been
exposed to rain or moisture, does not operate normally,
or has been dropped.
NOTICE
IMPORTANT SAFETY INSTRUCTIONS
NOTICE FOR DIGITAL EQUIPMENT
In order to obtain full performance of NEAR digital
devices, always download and install the latest drivers,
firmware and/or software versions available online at:
http://www.nearspeakers.com
WARNING:
The apparatus shall be connected to a mains socket
outlet with a protective earthing connection.
To reduce the risk of fire or electric shock, do not expose
this apparatus to rain or moisture.
The apparatus shall not be exposed to dripping or
splashing and that no objects filled with liquids, such as
vases, shall be placed on the apparatus.
Where the mains plug or an appliance coupler is used as
the disconnect device, the disconnect device shall
remain readily operable.
Contents
INTRODUCTION
........................................................................................................1
PANEL DESCRIPTIONS
........................................................................................2
7XL Front & Rear Panel Callouts
INSTALLATION
..........................................................................................................3
Ventilation & Mounting Options
CONNECTIONS
........................................................................................................4
Speakers, Inputs, Outputs & Ethernet
OPERATION
................................................................................................................5
Front Controls & Indicators
QUICK-START: USING DSP PRESETS
..........................................................6
QUICK-START: WIRING
..........................................................................................7
SOFTWARE CONTROL
......................................................................................8-16
TROUBLESHOOTING
..........................................................................................17
SPECIFICATIONS
..................................................................................................18
LIMITED WARRANTY; EXCLUSION OF CERTAIN DAMAGES
..........19
iii
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1
Introduction
The NEAR®7XL Power Amplifier is a highly flexible and intelligent digital audio,
2-channel, Class-D power amplifier, delivering up to 700W per channel @
4/8/16Ω and 70V/100V Constant Voltage Lines, in Direct Drive, without using
internal output transformers. A Line Output with independent DSP parameters
for driving additional line-level devices is included.
To guarantee maximum reliability, the two powered output channels include highly
efficient Class-D amplifiers, with independent Switch Mode Power Supplies,
including Power Factor Correction, powering each amplifier channel in Bridge
Tied Load (BTL) mode. The two amplifier output stages are very low noise and
low distortion with efficiency up to 90%, and are also equipped with a full set of
circuit protections.
Designed to meet the most demanding residential sound system applications,
NEAR 7XL’s set of sophisticated controls and parameters for loudspeakers are
implemented using a powerful Digital Signal Processor (DSP) running at
48kHz/24bit, and include high-performance 24bit AD/DA Converters. User
controlled parameters such as matrix routing, Noise Gate, up to 48dB/Oct IIR
HP/LP filters for crossover, parametric EQs (Bell, Notch, Variable Q HI/LO
Shelving, and HI/LO Pass filters), RMS Compressor, Peak Limiter, polarity, and
alignment delay are available. All in all, everything needed to optimize loudspeaker performance is provided by the NEAR 7XL. Moreover, each input/output
channel provides internal limiting process monitoring to prevent Overflow
Clipping from occurring in the signal path. Efficient heat dissipation mechanisms
and over-temperature protection are implemented, which ensure reliability
without compromise. A useful Pink/White noise generator is included to facilitate
system setup. All setup parameters for input/output DSP are easily accessible
by using the remote GUI application.
0
I
OFF
7
2
Panel Descriptions
1. “Stand By” Button - Puts the amplifier into low-power consumption, or “Stand By” mode.
The button will appear as back-lit Red when in “Stand By” mode.
2. Signal Clip Indicators - Summed LED read out of corresponding Input and Output.
Green - Signal is present.
Red - Clipping condition (detected at various points from input to DSP to amplifier out.
3. LCD Display - Read-out for amplifier state and preset selection.
4. Encoder/Push Button - Used to navigate the LCD screen and presets.
5. Fan Air Intake - Air intake for stepped-speed cooling fan. Fan speed responds as needed to keep
the amplifier cool, while reducing dust build-up. Fan grilles are backed by dust filters. The unit
may be vacuumed for cleaning via front panel.
1. High-Impedance Balanced Inputs - XLR female connectors allow for easy installation and
provide convenient connections to high-impedance balanced inputs. One per input channel.
2. High-Impedance Unbalanced Inputs - RCA type connectors allow for easy installation and
provide convenient connections to high-impedance unbalanced inputs. One per input channel.
3. Line Output - Line-level output. Third DSP output is available as Line Level only, either
Balanced XLR male, or Unbalanced RCA type.
4. Fan Exhaust - Air outlet for stepped-speed cooling fan.
5. Power Switch - ON/OFF Unit Power.
6. Amplifier Output Speaker Terminals - Pluggable screw terminals connect to speaker loads for
each amplifier channel. Accepts up to #12 AWG wire.
7.
Ethernet Connection - Ethernet RJ45 Connector for connection to MS-Windows®equipped comput-
er to access additional DSP features via a GUI-based application.
8. IEC Power Input - AC mains connection and fuse.
Rear
Panel
7
6
8
1
2
34
1
23 4 5
Front
Panel
5
The 7XL Power Amplifier was designed to either be placed on a table or rack-mounted. For rack-
mounted applications, the amplifier(s) can be stacked directly one on top of the other for
maximum use of the rack space available without any extra, empty rack spaces between them.
An open air space of at least 4" must be provided at the front air intakes and the exhaust to
ensure adequate cooling. This applies whether rack- or table-mounted. Care should also be
taken to ensure that the front intake air is not considerably warmer than the ambient air
temperature. Mount the amplifier low in the rack so that heat dissipation from other equipment
does not warm the amplifier's intake air.
1. Rack Mounting: Rack ears are integral with the 7XL amplifier to allow mounting in 19" racks.
Load the amplifier into the rack and secure it to the rack (1 & 1A) using 10-32 or M5*16 (or
larger), Truss or Pan head type screws (not included).
2. Table Mounting: Rubber feet, included with the unit, must be secured to the bottom of the
amplifier with the screws provided (2 & 2A) to allow it to be situated on a tabletop/shelf.
1
2A
1A
2
3
Installation
Ventilation
Amplifier Mounting
4
Connections
For 70/100V and 4/8/16-ohm Speakers
The 7XL was designed to drive 70/100V constant voltage and 4/8/16-ohm
type low-impedance speaker loads. The use of lower impedance speakers
may cause the amplifier to engage its protection circuits and shut down
or limit amplifier function.
The Speaker Terminals can accept up to a #12 AWG wire and are plug-
gable which make wiring easier. The polarity of each set of speaker outputs (A & B) is indicated with a “+” and “-” sign. Use these indicators to
ensure that the polarity of the speakers is correct. Do not ground any of
the output terminals. Doing so will cause the amplifier to go into protect
mode, shutting down operation of the affected channel.
Speakers
Balanced input connections are used when the source device provides a
balanced output signal (signal “+”, signal “-”, and ground “G”). This type of
connection is desirable when operating in electrically noisy environments,
where long input cable runs are needed, or to ensure the lowest noise
operation. If compatible with the source device, this type of connection is
recommended. This input must be selected via the GUI application.
Balanced Input Connections
Unbalanced input connections are used when the source device provides
an unbalanced output signal (signal “+” and ground “G”). Since unbalanced connections do not provide the same amount of noise immunity that
a balanced connection does, the connection distances should be made as
short as possible. Unbalanced Input is active by factory default.
Unbalanced Input Connections
Line level output. Third DSP output is available as Line Level only, either
Balanced XLR male, or Unbalanced RCA type. Both outputs are available at all times.
NOTE: In order for the Line Output Balanced XLR male to be active, be
sure that the mating connector (XLR female) has a jumper between Pin1
and the shell ground tab.
Line Outputs
Ethernet RJ45 Connector for connection to
MS-Windows®to access
additional DSP features via a GUI-based application.
Ethernet
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