User Manual

8 DF1000 Quick Start Guide 9
1. Introduction
Welcome!
Thank you for purchasing the DF1000 Dual-Channel Feedback Suppression
Processor.
Features
• Dual-channel feedback suppression processor designed for fully automatic and
zero-con guration setup
• O ers up to 10 dB increase in system gain
• Instantly detects and stops acoustic feedback. Highly e ective with both
speech and music
• Ultra-fast and highly accurate DSP selects and applies up to 32  lters per
channel
• Two fully independent audio channels to process stereo or separate zone
signals
• Extremely narrow  lters (up to 1/30th octave) to retain overall signal integrity
• Front panel control featuring suppression and  lter reset buttons
• Two balanced/unbalanced inputs on combination line level XLR/TRS and 3-pin
Euroblock connectors
• Auto-ranging universal switch-mode power supply
• Designed and engineered in England
About this Quick Start Guide
This is the Quick Start Guide for the DF1000 Dual-Channel Feedback Suppression
Processor. This Quick Start Guide is intended to help get your unit installed
and in operation as quickly as possible by giving you unpacking, installation,
connection, setting up and operating instructions. To help familiarise you with
the DF1000, there is a description of the front and rear panels, along with
easy-to-follow user instructions.
2. Getting Started
This section shows you how to unpack, install, connect up, switch on and
con gure the DF1000 Dual-Channel Feedback Suppression Processor.
This equipment is supplied by a mains voltage that can
cause electric shock injury. Before installing, setting up or
operating this equipment, make sure that you have read
and fully understand all of this section and the
“Important safety instructions” at the front of this document.
Unpacking
Carefully unpack your DF1000 unit. Then, inspect the DF1000 unit carefully for
any signs of damage that may have occurred during transit, and then notify the
courier immediately if you do discover any damage.
Check the contents of your DF1000 unit equipment package. If there are any parts
missing, incorrect or faulty, please contact your local distributor or KLARK TEKNIK
at the address at the front of this Quick Start Guide.
Please retain the original packing in case you should need to return the
equipment to the manufacturer or supplier, or transport or ship the unit later.
Installation
Before installing and operating this equipment, make sure it is correctly
connected to the protective earth conductor of the mains voltage supply socket
outlet through each mains lead.
Ideally a cool area is preferred, away from power distribution equipment or other
potential sources of interference.
Do not install the equipment in places of poor ventilation.
Do not install this equipment in a location subjected to excessive heat, dust or
mechanical vibration. Allow for adequate ventilation around the equipment,
making sure that its fans and vents are not obstructed. Whenever possible, keep
the equipment out of direct sunlight.
Mount in rack only.
Power
The internal power supply is of the switch mode type that automatically senses
the incoming mains voltage and will work where the nominal voltage is in the
range 100 VAC to 240 VAC.
The correct leads for connection in the area to which the unit was shipped are
supplied with the unit. The equipment should only be plugged into the mains
outlets using the supplied leads.
Make sure the plug  tted on the supplied mains cable is securely  tted to the
mains IEC connector on the unit. When  tting or removing a plug, always hold
the plug itself and never pull on the cable, as this may damage the cable. Never
insert or remove an electric plug with wet hands.
Handling the equipment
When lifting or moving the equipment, always take its size and weight into
consideration. Completely isolate the equipment electrically and disconnect all
cables from the equipment before moving it.
Electric fields
In accordance with Part 15 of the FCC Rules & Regulations, “… changes or
modi cations not expressly approved by the party responsible for compliance
could void the user’s authority to operate the equipment.”
Should this product be used in an electromagnetic  eld that is amplitude
modulated by an audio frequency signal (20 Hz to 20 kHz), the signal to noise
ratio may be degraded. Degradation of up to 60 dB at a frequency corresponding
to the modulation signal may be experienced under extreme conditions
(3 V/m, 90% modulation).
Connecting up
The DF1000 unit uses the following leads and connectors:
Primary Analogue Inputs:
Line Inputs - Balanced XLR/TRS combination jacks and Euroblock connectors
- 20 K load
Primary Analogue Outputs:
Line-level Ouputs - Balanced XLR and Euroblock connectors - 50 R source
Power Connections:
IEC mains inlet – 100-240 V AC~50-60 Hz
For further information about the connectors used in conjunction with the
DF1000 unit, see Section 5. Connectors.
Front Panel
(1) RACK EARS for rackmount installation
(2) RESET switch resets the  lters and clears the memory. A white LED will  ash
during the reset process.
(3) ACTIVE switch toggles between active and bypass modes. In active mode, the
automatic  lters are engaged. In bypass mode, the  lters are bypassed and signal
will pass through the unit unaltered. If the DF1000 is powered o , the unaltered
signal will pass through (hard bypass).
(4) POWER SWITCH turns the unit on and o . The embedded power LED lights up
when the unit is powered on.
Back Panel
(5) POWER SOURCE jack accepts the included IEC power cable.
(6) OUTPUTS section features XLR and 3-pin Euroblock connectors are wired in
parallel and drive balanced or unbalanced loads.
(7) INPUTS section features XLR/TRS combination jacks and 3-pin Euroblock
connectors wired in parallel and will accept balanced or unbalanced
line level signals.
(2)(1) (4)(3)
(5)
(6) (7)
3. Front and Back Panel