Dynacord DPS260 User manual

Owner’s Manual

www.d
y
nacord.com

The lightning flash arrowhead symbol, within a
n
equilateral triangle is intended to alert the user to th
e
presence of uninsulated „dangerous voltage“ withi
n
the product’s enclosure that may be of sufficien
t
magnitude to constitute a risk of electric shock t
o
persons.
The exclamation point within an equilateral triangle i
s
intended to alert the user to the presence of importan
t
operating and maintance (servicing) instructions in th
e
literature accompanying the appliance.
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 a dry cloth.
7. Do not cover any ventilation openings. Install in accordance with the manufacture’s instructions.
8. Do not install near heat sources such as radiators, heat registers, stoves, or other apparatus
(including amplifiers) that produce heat.
9. Do not defeat the safety purpose of the polarized or the grounding-type plug. Apolarized plug has two blades
with one wider than the other. Agrounding 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 or pinched particularly at plugs, convenience receptacles,
and the point where they exit from the apparatus.
11. Only use attachments/accessories specified by the manufacturer.
12. Unplug this apparatus during lightning storms or when unused for a long period 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.
14. Do not expose this equipment to dripping or splashing and ensure that no objects filled with liquids, such as vases,
are placed on the equipment.
15. To completely disconnect this equipment from the AC Mains, disconnect the power plug from the AC receptacle.
16. The mains
p
lu
g
of the
p
ower su
pp
l
y
cord shall remain readil
y
o
p
erable.
European Union and other European countries with individual national policies on the management of
WEEE) The symbol on the product or on its packaging indicates that this product may not be treated as
regular household waste, but has to be disposed through returning it at a
T
elex deale
r
.
IMPORTANT SE
R
V
ICE INSTRUCTIONS
CAUTION: These servicing instructions are for use by qualified personnel only. To reduce the risk of
electric shock, do not perform any servicing other than that contained in the Operating
Instructions unless you are qualified to do so. Refer all servicing to qualified service personnel.
1. Security regulations as stated in the EN 60065 (VDE 0860 / IEC 65) and the CSA E65 - 94 have to be obeyed when
servicing the appliance.
2. Use of a mains separator transformer is mandatory during maintenance while the appliance is opened, needs to be
operated and is connected to the mains.
3. Switch off the power before retrofitting any extensions, changing the mains voltage or the output voltage.
4. The minimum distance between parts carrying mains voltage and any accessible metal piece (metal enclosure),
respectively between the mains poles has to be 3 mm and needs to be minded at all times. The minimum distance
between parts carrying mains voltage and any switches or breakers that are not connected to the mains (secondary
parts) has to be 6 mm and needs to be minded at all times.
5. Replacing special components that are marked in the circuit diagram using the security symbol (Note) is only
permissible when using original parts.
6. Altering the circuitry without prior consent or advice is not legitimate.
7. Any work security regulations that are applicable at the location where the appliance is being serviced have to be
strictly obeyed. This applies also to any regulations about the work place itself.
8. All instructions concerning the handling of MOS - circuits have to be observed.
NOTE: SAFETY COMPONENT
(
MUST BE REPLACED BY ORIGIN
A
L PART
)

Contents
Overview .............................................................6
Introduction .........................................................8
DSP 260 Features.................................................................... 8
Controls & Connection..........................................10
Front Panel ............................................................................10
Rear Panel .............................................................................14
Installation ............................................................................16
Mounting.................................................................................................... 16
Power Connection........................................................................................ 16
Audio Cables ..............................................................................................16
Balanced Input / Output Connections.............................................................16
Un-balanced Input / Output Connections ........................................................17
RS-232 ......................................................................................................17
Relay Contact Closure .................................................................................. 17
USB ..........................................................................................................18
Connection to Amplifiers............................................................................... 18
Input Level Adjustment ................................................................................18
Editing & Operation .............................................19
Factory Presets.......................................................................19
User Presets – Standard Editing ...............................................19
User Preset – Full Editing.........................................................19
Unpacking & Warranty.............................................................19
Run-time Mode ...................................................20
LCD Display ...........................................................................20
Input Level Meters..................................................................20
Output Level Meters................................................................20
Output Gain Reduction Meters ..................................................21
Output Channel Mute Buttons...................................................21
Output Channel Function Indicators ..........................................21
Preset Recall ..........................................................................21
Preset Store...........................................................................22
Edit ......................................................................................23
Standard Edit Mode ................................................................23
Full Edit Mode ........................................................................23
Parameters ............................................................................23
Input Channel Hi-Pass Filter..........................................................................24
Input Channel Parametric EQ ........................................................................25
Input Channel GEQ (Graphic Equalizer) ..........................................................28
Input Delay ................................................................................................28
Routing......................................................................................................29

Cross-Over (Output Channels)
......................................................................
29
Parametric EQ (Output Channels) .................................................................. 31
Delay (Output Channels) .............................................................................31
Channel Level (Output Channels) ..................................................................32
Channel Limiter (Output Channels) ................................................................32
Setup ................................................................33
Setup Menus..........................................................................33
Configuration..............................................................................................33
Input .........................................................................................................34
LCD...........................................................................................................34
Limiter Units............................................................................................... 34
Metering .................................................................................................... 34
Temperature...............................................................................................34
Editing.......................................................................................................35
Lock - Front Panel Access .............................................................................35
System ...................................................................................................... 36
RS232 Port................................................................................................. 36
Configurations of the DSP 260...............................37
List and Detailed Descriptions ..................................................37
Stereo 2 Way + Full Range ...........................................................................38
3 Way Stereo.............................................................................................. 39
4 Way + FR ................................................................................................ 40
5 Way + FR ................................................................................................ 41
Free Configuration - Full Edit 2 in 6 Out..........................................................42
3 Way Stereo-Mono Sub+FR .........................................................................43
EQ Plot Images ...................................................45
6dB PEQ Cuts Q Changes.........................................................45
6dB-Oct Shelves at 200Hz and 2kHz .........................................45
12dB PEQ Cuts Q Changes.......................................................46
12dB-Oct Shelves at 200Hz and 2kHz .......................................46
Bessel Filters .........................................................................47
Butterworth Filters..................................................................47
Hi Lo Pass Filters ....................................................................48
Linkwitz-Riley Filters ...............................................................48
PEQ Gains .............................................................................49
Operation Modes & Presets ...................................50
Dimensions ........................................................52
Technical Specifications ........................................53

Overview
Com
p
are
/
Edit
In
p
ut Meters Dis
p
la
y
V
alue
Select Buttons
Dynacord DSP-260
Program:U01
(
FullEdit
(
2in. 6out
))
Edit
Setu
p
<
Store
>
Recall
USB Port Setu
p
Store / Recall
6

Processin
g
Menues for Hi
g
h
Pass Filter, Parametric EQ,
Gra
p
hic EQ and Dela
y
Output Gain Reduction Meters, Out
-
put Channel Function Indicators an
d
Out
p
ut Level Meters
HPF
PEQ
GEQ Dela
y
X-Over
PEQ
Dela
y
Level
Mute Mute Mute Mute Mute Mute
Output Control buttons for
Cross-Over, Parametric
EQ, Dela
y
and Level
Output Channel
Mute Buttons
7
Owners
Manual

Introduction
Thank you for purchasing the Dynacord
DSP 260 Digital Signal Processor.
The Dynacord DSP 260 Digital System
Processor is a universal two-input, six-output
digital signal processor with the flexibility of
configuration to handle a multitude of audio
system needs and applications; installed sound,
house of worship, convention & meeting facilities,
concert touring, club, portable sound
reinforcement and more.
IMPORTANT NOTE
To achieve optimum perfor-
mance and guard against
damage to the processor,
your sound system or your-
self, please read, understand
and follow all of the direc-
tions contained in this
Owner’s Manual. Failure to
do so may result in improper
performance, loss or injury.
Dynacord DSP-260
Program:U01
(
FullEdit
(
2in. 6out
))
Edit
Setup
<
Store
>
Recall
HPF
X-Over
PEQ
PEQ
GEQ
Delay
Delay
Level Mute
Mute Mute Mute Mute Mute
DSP 260
F
eatures
The internal routing matrix can be configured as 2-way stereo + full-range, 3-way
stereo, 4-way mono + full-range, 5-way mono + full range, 3-way stereo with a
mono sub + full-range, 4-way stereo with mono sub and low frequency and finally
as a freely assignable 2 x 6 matrix router.
The DSP 260 replaces entire
racks
o
f
signal
processors
previously needed
to
properly configure and control sound reinforcement systems with a single
Analog Devices® SHARC™ DSP processor. The substantial advantages of the
DSP 260 over discrete si
g
nal
p
rocessin
g
racks
include:
• 24-bit, 48kHz digital
signal
path
• No patch cables to fail or add noise
• Optimal gain structure throughout all stages of signal processing;
no gain matching from processor to processor.
• Recallable factory and user presets; instant system reconfiguration
for differing applications and performances.
• Easy, intuitive operation and editing with a PC and the DSP 260
Graphic User Interface Application.
Each DSP 260
Digital System
Processor
includes
the
following
si
g
nal
p
rocessin
g
blocks:
• Input VU Metering
• Analog or AES/EBU inputs
• 24-bit, 48kHz A/D converters
• Stereo Hi-pass filters
• Stereo 9-band parametric equalizer
• Stereo 31-band graphic equalizer (available as a software add-on
with V1.1 firmware - see www.dynacord.com for details)
• Stereo delay
8

Matrix Router
/ Mixer
• Two (stereo) inputs
• Summed left / right (mono) input
• Six assignable outputs
Outputs (each)
• Cross-over (hi-pass / low-pass filters), with selectable filter types
• 5-band parametric equalizer
• Delay
• Polarity
• Peak RMS detecting limiter
• Level & Mute
• 24-bit, 48kHz D/A converters
Additional features include:
• Electronically balanced XLR inputs and outputs
• -6dB switchable input level pad
• Contact closure interface for recall of up to eight selectable presets
• Front-panel USB port for connection to PC; preset editing and real
time parameter control and monitoring.
• Firmware updates
• FLASH memory for preset storage and in-field firmware upgrades
• Input level meters
• 192 x 32 back-lit graphic LCD display
• LCD navigation / editing controls
• DSP block navigation short-cut controls
• Output level meters
• Output gain reduction meters
• Output assignment display LEDs; sub, low, mid & high
• Output channel Mute controls
• Auto-ranging internal power supply; 100 – 240VAC, 50 – 60Hz
• Standard IEC A.C. inlet with external, replaceable fuse
9
Owners
Manual

Controls
&
Connection
Front Panel 4 6 8 9 12 13 14 15 20 21
1 2 3 5 7 10 11 16 17 18 19 22 23
1 – USB Connector
USB 1.0 port for connection to a
PC
running
Windows
XP
or
Vista. With a
connected PC you may run the DSP 260 Editor Graphic User Interface Application.
The DSP 260 can be operated, edited and configured for installation with an easy
to use, intuitive interface. Any available firmware updates downloadable from
www.dynacord.com can be loaded via the USB port as well; allowing for easy in-
field u
p
dates.
2 – In
p
ut Level Meters
The DSP 260 does
not itsel
f
have
input
level
controls.
Proper
input level
adjustment is accomplished by setting the output level from the (L / R) bus
outputs from the connected mixer (or other audio output device), as the vast
majority of today’s mixer-outputs are dBu calibrated. When the mixer is operating
at optimal levels, so is the DSP 260. The input meters monitor the input level of
either analog or AES-EBU inputs, depending on the input mode selection set in
the Setu
p
Menu.
Optimal signal-to-noise performance
is
obtained
when
the
nominal (average),
input level consistently lights the +3dBu (green) and / or +6dBu (Yellow) LED
indicators. As the DSP 260 is a digital audio device – and digital clipping produces
very unpleasant results, the Clip (red) LED should not light. If the DSP 260’s input
does cli
p
,
reduce the out
p
ut level
o
f
the
connected
mixer.
3 – LCD Dis
p
la
y
The bac
k
-lit, 192 x
32 graphic
L
CD
display
allows
for
operation
and editing o
f
the
DSP 260 without the need for an attached PC. The contrast can be set in the Setu
p
Menu for var
y
in
g
li
g
htin
g
conditions
and
viewin
g
an
g
les.
The LCD display works in conjunction
with
Menu
buttons,
Select buttons and
Value buttons - to
o
p
erate, navi
g
ate
and
edit
the
DSP
260
’
s
p
arameters.
In Run mode, the LCD displays the
number
and
name
o
f
the
currently selected
factory or user preset. Pressing the Recall or Store buttons switches to their
respective menus. Pressing the Edit or Setup menu buttons switches the display
to the last edited
p
arameter.
In Edit and Setup mode, the top
line
o
f
the
LCD
display
shows
the currently
selected parameter edit screen. Use the Select buttons to activate the top line of
the display, and the value buttons to scroll through available parameter edit
screens.
10

4/5 – Value U
p
/Down Buttons
Depending on
the current LCD
screen,
the
Value
Up/Down
Buttons performs
the followin
g
function:
R
ecall – Select forwards/backwards
through
the
stored preset list to
select a
p
reset to be recalled
to
current
memor
y
.
Store – Select User Preset
destinations
forwards/backwards to select
a
destination for the currently edited preset, scroll forwards through ANSI
character
set to name
p
reset.
Edit / Setup – Scroll forwards/backwards
through
Edit / Setup screen
s
when the top line of the LCD screen is active. Scroll forwards throug
h
values for
the selected
p
arameter
in
an
Edit
/
Setu
p
screen.
6 – Edit / Com
p
are Button
Pressing the Edit button while
in
Run
mode
places
the
current preset in Edit
mode and the Edit button lights. The LCD display shows the last edit screen
that was selected. From this point, any edit screen can be displayed and
altered.
Pressing the Edit button again
“compares”
the
edited
preset, i
f
parameters
have been altered, to the original un-edited preset. This compare function will
audibly switch between the altered parameters and the previously stored
settings, allowing you to hear the effect of any DSP changes that have been
made. Use this
feature to monitor
p
ro
g
ress
in
editin
g
or
creatin
g
p
resets.
Subsequently recalling a new
preset
will
prompt
you
to
save changes, which
y
ou ma
y
do or
not.
7 – Setu
p
Button
Pressing the Setup button while
in
Run
mode
displays
the
Setup menus in
the
LCD display and the Setup button lights. In this mode, any Setup menu can
be displayed and altered. Changes made to Setup menu items are saved
automaticall
y
.
T
o exit Setup mode, press the
Setup
button
again.
T
he
L
CD display will revert
to Run mode.
8 – Select < Button
The Select < button is pressed
to
navigate
backwards
through Edit, Setup
and / or Recall menu displayed. The button cycles through all available value
fields in a screen and wra
p
s
around
from
first
to
last.
9 – Select > Button
The Select > button is pressed
to
navigate
forwards
through Edit, Setup and
/
or Recall menu displayed. The button cycles through all available value fields
in a screen and
wra
p
s around
from
last
to
first.
11
Owners
Manual

10 – Store Button
Pressing the Store button while
in
R
un
mode
displays
the
Store Preset screen
in the LCD display and the Store button lights. In this screen edited presets
can be named and saved to a user preset location. Pressing the Store button
a
g
ain com
p
letes the
p
reset
save
o
p
eration.
T
o exit without
storing the current
preset,
press
the
Edit
or
Setup buttons
to
return to the Run mode screen.
11 – Recall Button
Pressing the
R
ecall button while
in
R
un
mode
displays
the
R
ecall Preset screen
in the LCD display and the Recall button lights. In this screen, any of the 60
factory and 20 user presets can be recalled into current memory. Pressing the
Recall button again completes the preset load operation and returns the LCD
dis
p
la
y
to
R
un
mode.
T
o exit without
storing the current
preset,
press
the
Edit
or
Setup buttons
to
return to the Run mode screen.
12 – In
p
ut HPF Button
Pressing the HPF button places
the
current
preset
in
Edit
mode and jumps
to
the Hi-Pass Filter screen of Input A. Subsequent button presses toggle the
dis
p
la
y
between In
p
ut A and
In
p
ut
B.
13 – In
p
ut PE
Q
Button
Pressing the PEQ button places
the
current
preset
in
Edit
mode and jumps
t
o
the first screen of the Input Parametric Equalizer. Subsequent button presse
s
to
gg
le the dis
p
la
y
between In
p
ut
A
and
In
p
ut
B.
14 – In
p
ut GE
Q
Button
Pressing the GEQ button places
the
current
preset
in
Edit
mode and jumps
t
o
the the Input Graphic Equalizer screen. Subsequent button presses toggle th
e
dis
p
la
y
between In
p
ut A and
In
p
ut
B.
15 – In
p
ut Dela
y
Button
Pressing the Delay button places
the
current
preset
in
Edit
mode and jumps
to the Input Delay screen. Subsequent button presses toggle the display
between In
p
ut
A and In
p
ut
B.
16 – Out
p
ut X-Over Button
Pressing the
X
-Over button
places
the
current
preset
in
Edit mode and jumps
to the first Output Channel Cross-Over screen. Subsequent button presses
ste
p
throu
g
h the six out
p
ut
channels.
12

17 – Out
p
ut PE
Q
Button
Pressing the PEQ button places
the
current
preset
in
Edit
mode and jumps
t
o
the first Output Parametric Equalizer screen. Subsequent button presses ste
p
throu
g
h the six
out
p
ut channels.
18 – Out
p
ut Dela
y
Button
Pressing the Delay button places
the
current
preset
in
Edit
mode and jumps
to the Output Channel Delay screen. Subsequent button presses step through
the six out
p
ut
channels.
19 – Out
p
ut Level Button
Pressing the Level button places
the
current
preset
in
Edit
mode and jumps
to
the Output Channel Level screen. Subsequent button presses step through
the six out
p
ut
channels.
20 - Out
p
ut Level
Meters
Each output channel has an
eight-segment
output
level
VU
meter. Meter
response characteristics can be selected in the Setup menu: Normal Fast,
Peak-Hold Slow Decay. The yellow segment indicates that limiting is being
applied to the output channel. The red segments indicates clipping of the D/A
converters and should be avoided by adjusting the Output Level of the output
channel. It is important to understand how the meters work and what they
are displaying. The Output Meters are displayed as “dB to Limiter Threshold”.
In other words, these meters will display the headroom between the output
level and the limiter threshold. When viewed in conjunction with the Gain
Reduction meters, this provides a complete display of level and headroom
before and after limiting has been engaged to allow system levels to be
o
p
timized.
This also means that the output
metering
will
be
displayed
differently
de
p
endin
g
on the limiter threshold
settin
g
.
21 – Out
p
ut Gain Reduction Meters
Each output channel has a four-segment
gain
reduction
meter that shows
the
effect o
f
the out
p
ut channel
Limiter
on
out
p
ut
level
;
from
0dBu to -12dBu.
22 – Out
p
ut Channel Mute Buttons
Each output channel has a lighted
Mute
button.
Pressing
the Mute button
turns off the output of that channel. The button lights red as an alert. Press
the Mute button a
g
ain to restore
the
out
p
ut
channel
’
s
si
g
nal.
Output channels may also be
muted
from
the
DSP
260
Graphic User Interfac
e
Application, if the unit is connected to a PC. Muting a channel in any windo
w
of the application will light the channel Mute button on the front panel of th
e
unit as well.
13
Owners
Manual

23 – Out
p
ut Channel Function Indicators
Each output channel has a four-segment
function
display
for informational
purposes only. For any given configuration possible with the DSP 260, an
output channel may be identified as a sub, low, low/mid, mid, mid/hi, hi or
full range output. One or two adjacent LED are displayed to indicate all
p
ossible out
p
ut
band
p
asses.
(
Full
ran
g
e
is
indicated
b
y
no
lit LED
’
s.
)
Rear Panel
24- A.C. Inlet
The DSP 260 features a standard
IEC
A.C.
inlet
that
will
accept universal
power cords. The DSP 260 power supply is auto-ranging and can accept
voltages from 100 - 240VAC, 50 – 60Hz. Only A.C. cords approved for use in
y
our countr
y
should be connected
to
the
DSP
260.
25 – A.C. Fuse
The A.C. inlet includes a fuse
holder
that
contains
the
mains fuse as well as
a
spare fuse. If necessary, replace the fuse only with a specified 5x20mm,
T800mA, L250V replacement. Disconnect A.C. power before replacing a fuse.
Before turning the unit back on, assess the condition of the A.C. receptacle
powering the DSP 260. If fuses continue to blow, refer servicing of the DSP
260 onl
y
to
q
ualified service
p
ersonnel.
26 – A.C. Power Switch
The A.C.
p
ower
switch turns
p
ower
to
the
DSP
260
On
and
Of
f
.
27 – Link/Rela
y
Interface
The operating
mode o
f
this dual
purpose
interface
is
selected in the Setup
menu. O
p
eratin
g
modes are:
RS-232
I
nterface – Used
to
link
two
DSP
260s
together in a Master
/
Slave setup. Connection is made via a standard 9-pin null-modem serial
interface
cable with female
connectors.
Contac
t
Closure
Port
–
Eight
contact
closure
pins
plus ground for
interfacing to 5 V contact closure systems. Each pin can be assigned a
preset that is recalled when voltage on that pin is detected. The lowest
p
in number takes
p
riorit
y
in
multi
p
le
controller
s
y
stems.
14

28 – Balanced XLR Out
p
uts
Each output channel has an
electronically
balanced
XLR
connector for
connection to system amplifiers. Each output channel can output different
fre
q
uenc
y
ran
g
es de
p
endin
g
on
its
assi
g
nment
and
cross-over settin
g
s.
Care must be ta
k
en to
assure
that
each
output
is connected
to an appropriate amplifier and loudspeaker to avoid damage
or unexpected results. Note that a new preset may change
the assignment of channel and its frequency range. For
instance an output assigned to Hi frequency speakers in one
preset, may be assigned as a sub output in another. See
“
Confi
g
urations o
f
the
DSP
260
”
.
29 – AES/EBU Di
g
ital In
p
ut
In addition to the analog audio
inputs,
an
AES/EBU
digital
stereo input is
provided and selectable in the Setup menu. The input conforms to IEC
standard 60958 Type I. Connections must be made with three-conductor,
110-Ohm
,
twisted
p
air cablin
g
and
an
XLR
connector.
30 – Balanced XLR Thru
Each analog audio input is connected
to
an
electronically
buffered and
balanced output as a through connector. The signal does not undergo any
digital conversion or processing. These connectors are used to pass input
audio to a second DSP 260 used as a slave or to other audio inputs in the
s
y
stem.
31 – Balanced XLR In
p
uts
Each input has
an electronically
balanced,
locking
XLR
connector. In stereo
o
r
dual modes, connections to both inputs must be made. In mono modes, onl
y
one connection
need be made
,
t
yp
icall
y
to
In
p
ut
A.
32 – -6dB Pad
Input levels to
the DSP 260
can
be
reduced
-6dB
prior
to
the A/D converter
t
o
compensate for higher-level output from mixers and other audio devices. Fo
r
ideal signal to noise performance when connecting the DSP 260 to high outpu
t
level devices engage the -6dB pad rather than turning down the output of th
e
connected device. The DSP 260’s Input Level Meters (2) will indicate incoming
si
g
nal level and
whether attenuation
is
re
q
uired.
15
Owners
Manual

Installation
For proper operation, all directions regarding installation and connection must be
followed.
Mounting
The DSP 260 should be mounted in a rack-mount enclosure or rack rails. The
unit is 1RU tall by 14” (353mm) deep. Proper clearance for air circulation
around the unit must be provided. Do not block any vent holes on the unit.
For secure mounting and electrical insulation, correct rack screws must be
used – #10-32 screw with plastic / nylon cup washer. All four mounting points
provided by the rack ears must be secured.
Power Connection
The DSP 260 must be connected to A.C. power only by means of the provided
IEC A.C. cable or by a power cable provided by the dealer / installer to match
the configuration of your country or region. The DSP 260 must only be
connected to a properly wired, three pin, grounded A.C. outlet. A.C. power
must range from 100 – 240VAC, 50 – 60Hz. The DSP 260 internal power
supply is an auto-ranging design; no adjustments are necessary to configure
it for proper A.C. power.
Audio Cables
Alwa
y
s use correctl
y
shielded
audio
cables
when
connectin
g
to the DSP 260.
Balanced Input /
Output Connections
To minimize induced noise caused by audio cables and to maximize the length
of cables used, balanced connections are strongly advised for both Inputs and
Outputs. The XLR jacks provided on the DSP 260 are configured as pin 1
ground, pin 2 hot (+), pin 3 cold (-). Cable shielding must be connected to
pin 1. XLR – XLR cables or ¼” tip-ring-sleeve – XLR cables can both be used
for balanced connections to the DSP 260.
16

Un-balanced Input / Output
Connections
Un-balanced connections can be made to the DSP 260, although induced
noise from cabling may be increased. Cables should also be less than 15”
(5m) in length. Unbalanced connections can be 6dB lower in level as well. To
match the audio level obtained with a balanced connection, it is necessary to
tie pin 3 to ground at the XLR connector. This may increase noise.
RS-232
Two DSP 260s can be used in combination as a
Master / Slave for managing larger sound
reinforcement systems. A 9-pin D-sub connector is
provided on the rear of each unit for data line
connections. A standard female-to-female RS232
cable that conforms to the null modem wiring
convention is used to connect the two units. Cable
length should be kept to less than 45 feet (15m) for
the most reliable operation. These cables are readily
available at local computer dealers.
Operation o
f
the DSP 260 9-pin
port
for
RS-
232 connections is selected in the Setup menu.
Relay Contact Closure
The same 9-pin port used for RS-232
connection to another DSP 260 can
alternately be used to recall presets
from relay contact closures. Pins 1 – 8
are the input lines and pin 9 provides
the ground reference. When the DSP
260 detects a connection between pin-9
ground and pins 1 – 8, as completed by
an external relay, a preset assigned by
the user to pins 1-8 is recalled into
memory and the DSP 260 returns to
runtime mode.
17
Owners
Manual

USB
Connecting the DSP 260 to a PC for operation via the DSP 260 Graphic User
Interface application is accomplished via the front panel USB port. The port
conforms to the USB 1.0. Type B specification. Type B USB cables are readily
available at computer dealers.
Connection to Amplifiers
It is very important to confirm correct connection to all
amplifiers. DSP 260 has the ability to configure each output
for a specific frequency range; sub, low freq. mid freq, high
freq. You must make sure that each output is connected to the
correct amplifier and loudspeaker(s). Incorrect connections
could lead to unexpected results or damage to loudspeaker
components.
Note also that
each preset in
the
DSP
260
includes
DSP
and
bandpass parameters for the output channels. It is possible
for a new preset to change an output from Hi to Sub, for
instance. Make sure that connections to amplifiers and
louds
p
ea
k
ers are correct before
usin
g
a
new
p
reset.
Input Level Adjustment
The final step in setting up, installing and connecting the DSP 260 is to set
proper input levels to the unit. The DSP 260 does not itself have input level
controls. Proper input level setting is accomplished by setting the output level
from the (L / R) bus outputs from the connected mixer (or other audio output
device). The input meters monitor the input level of either analog or AES/EBU
inputs, depending on the input mode selection set in the Setup Menu.
Optimal signal-to-noise performance
is
obtained
when
the
nominal
(average), input level consistently lights the +3dBu (green) and
/
or +6dBu (Yellow) LED indicators. As the DSP 260 is a digital audi
o
device – and digital clipping produces very unpleasant results – th
e
Clip (red) LED should never light. If it does, reduce the output leve
l
of the connected mixer.
Input levels to
the DSP 260
can
be
reduced
-6dB
with
the rear panel pad switch to compensate for higher-level
output from mixers and other audio devices. For ideal
signal to noise performance when connecting the
DSP 260 to high output level devices, engage the
-6dB pad rather than turning down the output of the
connected device.
18

Editing
&
Operation
Factory Presets
The DSP 260 comes with 60 factory presets to configure and manage typical
sound reinforcements systems. Factory presets can be recalled at will. Limited
editing can be performed from the front-panel LCD user interface such as output
level, mute and limiter threshold setting. Installers can identify factory presets
with system configurations that are not appropriate for the given installation and
lock-out and hide them from the operator.
User Presets – Standard Editing
The DSP 260 uniquely allows for limited access
to and visibility of parameters. Via the DSP
260 Graphic User Interface Application, the
installer can determine which parameters may
be accessed. For more on Standard and editing see
p
a
g
e 21.
User Preset – Full Editing
The DSP 260 can also be configured in full-
edit mode. All matrix routing presets are
available including 2 x 6 Full Edit. All DSP
parameters are accessible and adjustable.
Resulting settings can be saved into 20 User
Preset locations for later recall. Editing can
be performed from the front-panel LCD
display or on a PC with the DSP 260 Editor
Graphic User Interface Application. Full
editing is recommended only for experienced
installers / operators.
Unpacking & Warranty
Carefully remove the DSP 260 from its packaging and packaging materials.
Please save all packing materials and box, should you ever need to return the
DSP 260 for warranty service.
Included with the DSP 260 is this
Owner
’
s
Manual,
Warranty card and A.C.
power cable. Contact your distributor, dealer or installer if any of these items is
not included.
Fill out the warranty card in its entirety
and
return
it
to
the
address noted. Only
products for which completed warranty cards have been received will be covered
fully under warranty.
1 The factory warranty for your DSP 260 is 36 months (3
years), from the date of purchase. Please save the warranty certificate and
receipt; which must be presented at the time of warranty service for the factory
warrantee to be valid.
1 Warranty coverage rights vary
b
y state and countr
y
.You
r
warranty rights may var
y
. Consult your distributo
r
,
dealer or installer for
y
our warrant
y
ri
g
hts.
19
Owners
Manual

Run-time Mode
LCD Display
On power-up, the DSP 260 boots and displays
the run-time screen. The current preset
memory location and name are displayed as
well as the configuration on which the preset is
based.
Caution Before operating the soun
d
reinforcement system, an
d
any time a new
p
rese
t
is
recalled, check the configuration display to make sure that it is appropriate for your system
and that connections to your system are correct for the current configuration. Failure to do so
could cause unex
p
ected results o
r
dama
g
etothes
y
ste
m
o
r
its com
p
onents.
The LCD display
’
s contrast can be
adjusted
in
the Setup Menu to accommodate different
viewin
g
an
g
les.
Input Level Meters
During operation, the left and right input level meters display the
signal present at the DSP 260’s analog and Digital inputs. The DSP
260 does not itself have input level controls. Proper input level
setting is accomplished by setting the output level from the (L / R)
bus outputs from the connected mixer or other audio source.
Optimal signal-to-noise performance
is
obtained
when
the
nominal
(average), input level consistently lights the +3dBu (green) and /
or +6dBu (yellow) LED indicators. As the DSP 260 is a digital audio
device – and digital clipping produces very unpleasant results – the
Clip (red) LED should never light. If it does, reduce the output level
o
f
the connected mixer.
Output Level Meters
Each output channel has an
eight-segment output level
VU meter. Meter response
characteristics can be
selected in the Setup menu:
Normal Fast, Peak-Hold or Slow Decay. The yellow segment indicates that limiting is
being applied to the output channel. It is important to understand how the meters
work and what they are displaying. The Output Meters are displayed as “dB to
Limiter Threshold”. In other words, these meters will display the headroom between
the output level and the limiter threshold. When viewed in conjunction with the Gain
Reduction meters, this provides a complete display of level and headroom before
and after limiting has been engaged to allow system levels to be optimized. This also
means that the output metering will be displayed differently depending on the limiter
threshold setting. The red segments indicates clipping of the D/A converters and
should be avoided by adjusting the Output Level setting of the output channel.
20