BSS Audio SoundwebTM London BLU-101 User manual

1
SoundwebTM London
BLU-101 Installation Guide
18-0770-B

2
WARNING FOR YOUR PROTECTION
READ THE FOLLOWING:
KEEP THESE INSTRUCTIONS
HEED ALL WARNINGS
FOLLOW ALL INSTRUCTIONS
THE APPARATUS SHALL NOT BE EXPOSED TO DRIPPING OR SPLASHING
LIQUID AND NO OBJECT FILLED WITH LIQUID, SUCH AS VASES, SHALL
BE PLACED ON THE APPARATUS
CLEAN ONLY WITH A DRY CLOTH.
DO NOT BLOCK ANY OF THE VENTILATION OPENINGS. INSTALL IN
ACCORDANCE WITH THE MANUFACTURER’S INSTRUCTIONS.
DO NOT INSTALL NEAR ANY HEAT SOURCES SUCH AS RADIATORS, HEAT
REGISTERS, STOVES, OR OTHER APPARATUS (INCLUDING AMPLIFIERS)
THAT PRODUCE HEAT.
ONLY USE ATTACHMENTS/ACCESSORIES SPECIFIED BY THE MANU-
FACTURER.
UNPLUG THIS APPARATUS DURING LIGHTNING STORMS OR WHEN
UNUSED FOR LONG PERIODS OF TIME.
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
third prong are provided for your safety. If the provided plug does not fit your
outlet, consult an electrician for replacement of the obsolete outlet.
Protect the power cord from being walked on or pinched particularly at
plugs, convenience receptacles, and the point where they exit from the
apparatus.
Use only with the cart stand, tripod bracket, or table specified by the
manufacture, or sold with the apparatus. When a cart is used, use caution
when moving the cart/apparatus combination to avoid injury from tip-over.
Refer all servicing to 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.
POWER ON/OFF SWITCH: For products provided with a power switch, the
power switch DOES NOT break the connection from the mains.
MAINS DISCONNECT: The plug shall remain readily operable. For rack-
mount or installation where plug is not accessible, an all-pole mains switch
with a contact separation of at least 3 mm in each pole shall be incorporated
into the electrical installation of the rack or building.
FOR UNITS EQUIPPED WITH EXTERNALLY ACCESSIBLE FUSE RECEPTACLE:
Replace fuse with same type and rating only.
MULTIPLE-INPUT VOLTAGE: This equipment may require the use of a differ-
ent line cord, attachment plug, or both, depending on the available power
source at installation. Connect this equipment only to the power source
indicated on the equipment rear panel. To reduce the risk of fire or electric
shock, refer servicing to qualified service personnel or equivalent.
If connected to 240V supply, a suitable CSA/UL certified power cord shall
be used for this supply.
SAFETY INSTRUCTIONS
NOTICE FOR CUSTOMERS IF YOUR UNIT IS EQUIPPED WITH A POWER CORD.
WARNING: THIS APPLIANCE SHALL BE CONNECTED TO A MAINS SOCKET OUTLET
WITH A PROTECTIVE EARTHING CONNECTION.
The cores in the mains lead are coloured in accordance with the following code:
GREEN and YELLOW - Earth BLUE - Neutral BROWN - Live
As colours of the cores in the mains lead of this appliance may not correspond
with the coloured markings identifying the terminals in your plug, proceed
as follows:
•The core which is coloured green and yellow must be connected to
the terminal in the plug marked with the letter E, or with the earth
symbol, or coloured green, or green and yellow.
•The core which is coloured blue must be connected to the terminal
marked N or coloured black.
•The core which is coloured brown must be connected to the terminal
marked L or coloured red.
This equipment may require the use of a different line cord, attachment
plug, or both, depending on the available power source at installation.
If the attachment plug needs to be changed, refer servicing to qualified
service personnel who should refer to the table below. The green/yel-
low wire shall be connected directly to the units chassis.
CONDUCTOR WIRE COLOR
Normal Alt
LLIVE BROWN BLACK
NNEUTRAL BLUE WHITE
EEARTH GND GREEN/YEL GREEN
WARNING: If the ground is defeated, certain fault conditions in the unit
or in the system to which it is connected can result in full line voltage
between chassis and earth ground. Severe injury or death can then
result if the chassis and earth ground are touched simultaneously.
The symbols shown above are internationally accepted symbols
that warn of potential hazards with electrical products. The
lightning flash with arrowpoint in an equilateral triangle means
that there are dangerous voltages present within the unit. The
exclamation point in an equilateral triangle indicates that it is
necessary for the user to refer to the owner’s manual.
These symbols warn that there are no user serviceable parts inside
the unit. Do not open the unit. Do not attempt to service the
unit yourself. Refer all servicing to qualified personnel. Opening
the chassis for any reason will void the manufacturer’s warranty.
Do not get the unit wet. If liquid is spilled on the unit, shut it off
immediately and take it to a dealer for service. Disconnect the
unit during storms to prevent damage.
IMPORTANT SAFETY INSTRUCTIONS

3
IMPORTANT SAFETY INSTRUCTIONS
ELECTROMAGNETIC
COMPATIBILITY
This device complies with part 15 of the FCC Rules
and the Product Specifications noted on the
Declaration of Conformity. Operation is subject
to the following two conditions:
•
this device may not cause harmful interference,
and
•
this device must accept any interference received,
including interference that may cause undesired
operation.
Operation of this unit within significant
electromagnetic fields should be avoided.
•
use only shielded interconnecting cables.
U.K. MAINS PLUG WARNING
A molded mains plug that has been cut off from the cord is unsafe. Discard
the mains plug at a suitable disposal facility. NEVER UNDER ANY
CIRCUMSTANCES SHOULD YOU INSERT A DAMAGED OR CUT
MAINS PLUG INTO A 13 AMP POWER SOCKET. Do not use the
mains plug without the fuse cover in place. Replacement fuse covers can be
obtained from your local retailer. Replacement fuses are 13 amps and MUST
be ASTA approved to BS1362.
DECLARATION OF CONFORMITY
Manufacturer’s Name: BSS Audio
Manufacturer’s Address: 8760 S. Sandy Parkway
Sandy, Utah 84070, USA
declares that the product:
Product name(s): BLU 101
 Note:ProductnamemaybesufxedbytheEU.
Product option: None
conformstothefollowingProductSpecications:
 Safety:  IEC60065-01+Amd1
 EMC:  EN55022:2006
   EN55024:1998
   FCCPart15
Supplementary Information:
The product herewith complies with the requirements of the:
 LowVoltageDirective2006/95/EC
 EMCDirective2004/108/EC.
 RoHSDirective2002/95/EC
 WEEEDirective2002/96/EC
 WithregardtoDirective2005/32/ECandECRegulation1275/2008of
 17December2008,thisproductisdesigned,produced,andclassiedas
 ProfessionalAudioEquipmentandthusisexemptfromthisDirective.
Roger Johnsen
 Vice-PresidentofEngineering
8760 S. Sandy Parkway
Sandy, Utah 84070, USA
 Date:July7,2010
EuropeanContact: YourlocalBSSAudioSalesandServiceOfceor
Harman Music Group
8760 South Sandy Parkway
Sandy, Utah 84070, USA
 Ph:(801)566-8800
 Fax:(801)568-7583
If you want to dispose this product, do not mix it with general household waste. There is a
separate collection system for used electronic products in accordance with legislation that
requires proper treatment, recovery and recycling.
Private household in the 25 member states of the EU, in Switzerland and Norway may return their used
electronic products free of charge to designated collection facilities or to a retailer (if you purchase a similar
new one).
For Countries not mentioned above, please contact your local authorities for a correct method of disposal.
By doing so you will ensure that your disposed product undergoes the necessary treatment, recovery and
recycling and thus prevent potential negative effects on the environment and human health.

4
Regulatory information
An example of this equipment has been tested and found to comply with the following European
and international Standards for Electromagnetic Compatibility and Electrical Safety:
Radiated Emissions (EU): EN55022:2006
Immunity (EU): EN55024:1998
Electrical Safety (EU): IEC60065-01 + AMD1
Electrical safety (USA): UL60065-06
Mechanical installation
Important user information
Do not remove covers. No user serviceable parts inside, refer servicing to qualied service
personnel. For continued compliance with international EMC regulations, it is important that all
cables be screened, and connected as follows: Audio cable screens to their BLU-Device connector
ground. Control cable screens to the ground screws adjacent to the connector. Network cables
should be of type Cat 5, tted with a clip-on ferrite sleeve (STEWART TYPE 28A2029-0A0) near
the network socket end. This equipment must be earthed. It should not be necessary to remove
any protective earth or signal cable shield connections to prevent ground loops. Any such
disconnections are outside the recommended practice of BSS Audio, and will render the EMC or
safety certicate void.
If the unit is likely to undergo extreme vibration through extensive road trucking and touring, the
unit must be supported at the rear and/or sides to lessen the stress on the front mounting ange.
Rear rack supports are provided to reduce stress on front mounting ange. Damage caused by
insufcient support is not covered by the warranty. To prevent cosmetic damage to the front panel
nish, use protective plastic cups under the rack mounting bolts.
124 312 2 4 143 3124 32 14 3
CONTROL
ETHERNET
LOCATE
OUTPUTS INPUTS
S + S + S + S + S + S + S + S + S + S + S + S +S + S + S + S + S + S + S + S +
ABCDE
RS232
IN
OUT
BLU link
THIS EQUIPMENT MUST BE EARTHED
100-240V ~ 50/60Hz, 50W
MANUFACTURED IN THE USA BY BSS AUDIO

5
Front panel
Input/Output channel monitoring
Each channel has the following LED indicators:
Clip
Indicates clipping in the analogue domain for each input or output channel. The LED will
illuminate at +18.5dB.
Signal
The Signal LED will illuminate for each input or output channel when the signal reaches
or exceeds the signal threshold of -20dB.
Input channels have a third indicator:
48V
(Input channels only) Illuminates to indicate +48V phantom power has been activated for
the relevant input channel.
Other indicators
COM (Communications)
The COM LED turns green to indicate a normal linked condition. The COM LED blinks
green if data is being transferred on the Ethernet or RS232 port. The LED turns yellow if a
link is established but no IP address has been established.
STAT (Status)
The STAT LED turns green when a valid design file is loaded and running. The STAT
LED turns yellow when the design is paused. The STAT LED turns red when the design is
stopped.
ERR (Error)
The ERR LED is normally off. It turns red in the case of a critical or fatal error.
PWR (Power)
The PWR LED turns blue when the device is powered on. It blinks during locate
operations (both when pressing the locate button on the rear of the device and also when
locating the device from within the software).

6
Audio cable wiring
All audio and GPIO connections to the BLU-101 are via Klippon pluggable terminal
block connectors (also known as BL, Phoenix or Combicon). The BLU-101 includes
3-way female Klippon connectors for individual channels.
Audio Input and Output wiring convention
Soundweb products provide cable shielding ‘back from the destination’ to eliminate
ground loop problems. This means that the shield (S) connection on an input is
grounded, whereas the shield connection on an output is oating (although connected
via an internal network to ground for EMC compliance).
Balanced wiring - The convention for balanced wiring (2-core plus shield) is shown here:
Balanced cable
Shield Hot
Cold
Unbalanced wiring - The convention for unbalanced wiring to the inputs (1-core plus
shield) is shown here:
Unbalanced cable
Shield Hot
Link between
pins (S) and (-)
(optional for inputs)

7
Rear panel
AC Mains
AC Mains input to the universal switched-mode power supply, operates over a wide
range of AC input voltages from 100V to 240V, 50/60Hz.
Locate
Pressing the Locate switch on the rear of the unit will illuminate the PWR LED on the
front and identify the device within London Architect. Similarly the switch will illuminate
if the device is located from within London Architect.
RS232
Serial port for connection of external control equipment.
Ethernet
The main connection for the proprietary system control network, and for third-party
Ethernet control.
BLU link
The London BLU link is a point-to-point digital audio bus with 256 audio channels at
48K sample rate or 128 audio channels at 96K sample rate. The BLU-101 allows access
to channels 1-48 of this bus, at 48K sample rates. The physical connection is made with
Cat 5e cable from the OUT port of one device to the IN port of another device. The
devices are connected in a daisy chain fashion continuing with the OUT port of one
device connected to the IN port of the next device. Redundancy can be provided by
completing the loop and connecting the OUT port from the last device to the IN port of
the first device in the chain. All devices connected in the London BLU link chain must be
configured for the same audio sample rate.
Analogue Input/Output Connections
124 312 2 4 143 3124 32 14 3
CONTROL
ETHERNET
LOCATE
OUTPUTS INPUTS
S + S + S + S + S + S + S + S + S + S + S + S +S + S + S + S + S + S + S + S +
ABCDE
RS232
IN
OUT
BLU link
THIS EQUIPMENT MUST BE EARTHED
100-240V ~ 50/60Hz, 50W
MANUFACTURED IN THE USA BY BSS AUDIO
There are 12 analogue input connections and 8 analogue output connections. The
analogue connections are balanced, on Phoenix/Combicon connectors.
AEC
The BLU-101 has AEC capabilities which enable it to cancel acoustic echo arising
when sound from a loudspeaker enters a microphone in the same room in a conference
application.
The BLU-101 contains dedicated AEC processing for up to 12 independent AEC
algorithms. The AEC algorithm can be applied to signals coming from the local analog
inputs or from the digital audio bus. 12 individual AEC references (one per algorithm)
allow the user to provide a solution for multiple conferencing spaces using a single
device.
124 312 2 4 143 3124 32 14 3
CONTROL
ETHERNET
LOCATE
OUTPUTS INPUTS
S + S + S + S + S + S + S + S + S + S + S + S +S + S + S + S + S + S + S + S +
ABCDE
RS232
IN
OUT
BLU link
THIS EQUIPMENT MUST BE EARTHED
100-240V ~ 50/60Hz, 50W
MANUFACTURED IN THE USA BY BSS AUDIO

8
Automatic Gain Control (AGC) and Noise Cancellation (NC) are also provided per AEC
algorithm. AGC ensures that microphone levels remain at an optimum level, and NC
removes steady state noise (such as from a projector fan or air conditioning device) from
the signal path.
Non-Linear Processing (NLP) dynamically adjusts to minimize echo caused by under or
over-cancellation.
CONTROL INPUTS
Used to connect switches or potentiometers, e.g. BLU-3 selector wallplate (Part no.
Z-BLU-3). Looking at the control port connector (on the back of the unit), there are two
common (ground) connections C to the left of the twelve CONTROL INPUTS and, two
software assignable reference voltage outputs R to the right.
The control ports have two modes of operation: 2-wire and 3-wire.
2-wire mode
In this mode the twelve CONTROL INPUTS are internally ‘pulled up’ to +5V DC via
a 4.7kOhm resistor. Therefore, no external voltage source is needed to create contact
closure to ground for switches such as mute buttons or, resistance to ground (for other
multi-state or continuous controls such as Parameter Presets or faders).
See the help file within HiQnet London Architect for a table of resistor values for use with
Parameter Presets or source selectors.
Two ‘common’ ground connections are provided using the two C connectors to the left of
the CONTROL INPUTS.
A 47kOhm-log potentiometer (Part no. DM10018) connected between a control input
and common will allow parameters to be controlled linearly.
3-wire mode
This mode allows the use of linear pots or faders for continuous controls. A pot would be
wired as a potential divider with the top of the track connected to the reference output
R, the wiper to a control input and the bottom of the track to a common C. For good
performance, pots with track resistance between 10K and 100KOhms are recommended.
LOGIC OUTPUTS
Used to connect ‘tally’ indicator LED’s or relays.
There are six standard LOGIC OUTPUTS which produce 0V or +5V DC via an internal
440 Ohm resistor and two internally connected common (ground) connections C.
An LED connected between one output (Anode, A) and common (Cathode, K) will
illuminate when the LOGIC OUTPUT is activated, without requiring any external current
limiting resistor.
A high sensitivity relay (such as a reed relay) may be driven by connecting four outputs in
parallel. This arrangement will develop 4V across a 500-Ohm coil, providing that all four
outputs are made logic 1 simultaneously.

9
switch
2 wire mode
relay LED
relay
3600R 1800R 1200R
unconnected
lad-
+supply
47kOhm
log
10K-100kOhm
linear
switch
1k 1k 1k
lad-
1k
ground
4k7
3 wire mode
470R
OPTO Output
In addition to the six standard LOGIC OUTPUTS, there is an isolated output, which fails
safe (open circuit) if the unit becomes faulty.

10
Technical specications
FRONT PANEL LED INDICATORS Signal Present, CLIP, 48V (input only)
Other: Control link status and activity for Ethernet and RS-232
connections (COM); Device configuration status (STAT);
Error (ERR); Power/Locate (PWR)
ANALOGUE INPUTS: 12 electronically balanced on Phoenix/Combicon
removable screw connectors
Mic/Line Inputs: Nominal gain 0dB, electronically switchable up to +48dB,
in +6dB steps
Input impedance: 3.0kOhm
Maximum input level: +20dBu with 0dB input gain, (+8dBu with 12dB gain)
Frequency Response: 20Hz to 20kHz +/-0.5dB, balanced, 150 ohm
Dynamic Range: 111dB, 20Hz to 20kHz, A-weighted: 108dB unweighted
CMRR: >75dB at 1kHz
Equiv. Input Noise (EIN): <-125dBu typ. with 150 Ohms source
Phantom power: 48V nominal, selectable per input
A/D Latency: 37/Fs [0.77ms@48k]
AEC: Up to 12 channels of AEC processing
AEC Processing Latency: 2385/Fs [49.69ms@48k]
(Original 8k Algorithm)
AEC Processing Latency: 1609/Fs [33.52ms@48k]
(Full Bandwidth Algorithm)
Tail Length: 200 ms
Convergence Rate: 49 dB/s (Average convergence rate)
ANALOGUE OUTPUTS: 8 electronically balanced on Phoenix/Combicon
removable screw connectors
Maximum Output Level: +19dBu
Frequency Response: 20Hz to 20kHz (+0.5/-1dB)
THD: <0.01% (20Hz to 20kHz, +10dBu output)
Dynamic Range: 108dB typ. (22Hz to 22kHz unweighted)
Output Impedance: 40 Ohms balanced and 20 Ohms unbalanced
Crosstalk: <-75dB
D/A Latency: 29/Fs [0.60ms@48k]

11
CONTROL PORTS: 12 inputs and 6 outputs
Control Input Voltage: 0 to 4.5v
Control Input Impedance: 4.7kOhms to +5V (2-wire mode) >1MOhm (3-wire mode)
Logic Output Voltage: 0 or +5V unloaded
Logic Output Impedance: 440 Ohm
Logic Output Current: 10mA source, 60mA sink
WATCHDOG OUTPUT: Phoenix/Combicon connector for failsafe control
Opto Output current: 14mA maximum
Withstanding voltage: 80V maximum (Off)
Series Impedance: 220 Ohms (isolated)
CONTROL NETWORK
Connectors: RJ45 Ethernet connector
Maximum cable length: 100m/300ft on Category 5 cable between device and Ethernet switch
Maximum number of nodes: 60
BLU-linkTM AUDIO NETWORK
Connectors: 2 x RJ45 Ethernet connectors
Maximum cable length: 100m/300ft on Category 5e cable between devices
Latency: 11/Fs [0.23ms@48k]
Pass Through Latency: 4/Fs [0.08ms@48k]
POWER AND DIMENSIONS
Mains Voltage: 100-240V AC, 50/60Hz
Power Consumption: <55VA
BTU Rating: <188 BTU/hr
Operating Temperature Range: 5(41) to 35(95) degrees C(degrees F)
Dimensions (HxWxD): 1.75” (45mm)(1U) x 19” (483mm) x 12.5” (318mm)
Weight: 9.1 lbs / 4.1 kg
BSS Audio incorporates high quality mechanical fans in some products. All mechanical fans have a limited life
expectancy. We recommend annual inspection of fans for dust occlusion and excessive noise. Fan assemblies should
be replaced after six to ten years of use. Environmental factors such as elevated temperature, dust, and smoke can
adversely affect fan life. Systems exposed to these conditions should be inspected more frequently. Fan replacement can
be performed either at the factory or by an experienced technician in the eld. Please contact BSS Technical Support for
more information on purchasing replacement parts or product service.
BSS Audio has a policy of continued product improvement and accordingly reserves the right to change features and
specications without prior notice.

12
BSS Audio
8760 South Sandy Parkway
Sandy, Utah 84070
801-566-8800
www.bssaudio.com
Printed in the USA