Citronic PL720 Bruksanvisning

Citronic mottagare PL720

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PL720, PL1080
1U STEREO POWER AMPLIFIERS
Order ref: 1 , 172.112UK 172.11 UK
User Manual
Version 1.1
Caution: Please read this manual carefully before operating
Damage caused by misuse is not covered by the warranty
172.111UK, 172.112UK User Manual
Introduction
Thank you for choosing the Citronic -series 1U class- power amplifiers as part of your sound reinforcement PL D
system. These high output amplifiers are designed to offer high quality, dependable service for mobile and
installed systems. Please read this manual fully and follow the instructions to achieve the best results with your
new purchase and to avoid damage through misuse.
Warning
To prevent the risk of fire or electric shock, do not expose any of the components to rain or moisture.
If liquids are spilled on the casing, stop using immediately, allow unit to dry out and have checked by qualified
personnel before further use. Avoid impact, extreme pressure or heavy vibration to the case
No user serviceable parts inside Do not open the case refer all servicing to qualified service personnel. – –
Safety
• Check for correct mains voltage and condition of IEC lead before connecting to power outlet
• Ensure speaker leads are good condition with no short connections or damaged plugs
• Check impedance of speaker loads do not exceed the minimum stated load for the amplifier
• Do not allow any foreign objects to enter the case or through the ventilation grilles
Placement
• Keep out of direct sunlight and away from heat sources, damp or dusty environments
• When rack-mounting, ensure adequate support for the base of the amplifier and firm fixings for the front
• Ensure adequate air-flow and do not cover cooling vents at the front and rear of the amplifier
• Ensure adequate access to controls and connections
Cleaning
• Use a soft cloth with a neutral detergent to clean the casing as required
• Use a vacuum cleaner to clear ventilation grilles of any dust or debris build-ups
• Do not use strong solvents for cleaning the unit
Front Panel
1. Power on/off switch
2. Cooling vent
3. Channel A gain control
4. LED indicators
5. Channel B gain control
Rear Panel
6. Channel B input
7. Mode switch
8. Channel A input
9. Ground lift switch
10. Channel B SPK output
11. Channel A SPK output
12. Channel B 4mm output
13. Channel A 4mm output
14. Cooling vent
15. IEC mains inlet & fuse
16. Mains voltage selector
172.111UK, 172.112UK User Manual
Setup
Before operating the PL series amplifier, check the mains supply voltage and move the voltage selector (16) to
the correct supply voltage (115 or 230Vac) if necessary, before connecting the IEC inlet (15) to the mains
power supply using the power lead supplied (or equivalent).
Ensure that the cooling vents at front and rear (2, 14) are not covered or obstructed in any way with adequate
space for airflow through the unit.
The Citronic PL series 1U amplifiers are capable of driving speakers in 3 modes, set by the Mode selector (7)
Stereo mode
Connect Left and Right speakers to and outputs via the SPK (10,11) or 4mm binding Channel A Channel B
post connectors (12, 13)
For SPK wiring, connect and wires to pins and , for 4mm posts, wire to red and to black. + - 1+ 1- + -
Ensure that the combined load on each channel is no lower than 4 for speakers in parallel, 8Ω ( Ω + Ω = Ω8 4 )
Connect line level Left and Right inputs to the and combo inputs via 6.3mm jack or XLR (6, 8) CH A CH B
Parallel mode
Connect the speakers to the speaker outputs as described above but both outputs will only receive a mono
signal from the CH A combo input (6) and is controlled by volume control (3) CH A
Bridge mode
Bridge mode is different to the other 2 modes in that it combines both output channels to a single mono output.
This mode enables double the power to a single speaker output compared with Stereo or Parallel modes.
The difference is that the speaker load must be no lower than 8Ω, whether a single speaker or combined load.
Bridge mode can be useful especially when driving a large, high power subwoofer.
Connect speaker(s) to the SPK output or 4mm binding posts. Channel A
For SPK wiring, connect the wire to and the wire to . + 1+ - 2+
For 4mm binding posts, connect the wire to + CH A+ - and the wire to .CH B+
Note: For reference, this wiring is printed on the rear panel. Incorrect speaker wiring can damage the amplifier!
Bridge output receives a mono signal from combo input (6) and is controlled by volume control (3) CH A CH A
Ground Lift
In normal circumstances, the signal Ground connection is connected to the EARTH of the mains supply.
This helps to screen out noise and interference caused by RF emissions and nearby equipment.
Normally, the Ground Lift slider switch (9) will be set to the “GND” setting, where Ground is linked to EARTH.
Occasionally, the mains EARTH can be noisy and, in these circumstances, it may be preferred to isolate the
signal Ground from the mains EARTH connection. Moving the Ground Lift slide switch to the left “LIFT” setting
disconnects signal Ground from EARTH can help to remove noise generated in the mains EARTH.

Produktspecifikationer

Varumärke: Citronic
Kategori: mottagare
Modell: PL720

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