SAFETY INFORMATION
1. Please read these instructions carefully.
2. Keep all information and instructions in a safe place.
3. Follow the instructions.
4. Observe all safety warnings. Never remove safety warnings or other information from the equipment.
5. Use the equipment only in the intended manner and for the intended purpose.
6. Use only sufficiently stable and compatible stands and/or mounts (for fixed installations). Make cer-
tain that wall mounts are properly installed and secured. Make certain that the equipment is installed
securely and cannot fall down.
7. During installation, observe the applicable safety regulations for your country.
8. Never install and operate the equipment near radiators, heat registers, ovens or other sources of heat.
Make certain that the equipment is always installed so that is cooled sufficiently and cannot overheat.
9. Never place sources of ignition, e.g., burning candles, on the equipment.
10. Ventilation slits must not be blocked.
11. Do not use this equipment in the immediate vicinity of water (does not apply to special outdoor
equipment - in this case, observe the special instructions noted below. Do not expose this equipment
to flammable materials, fluids or gases.
12. Make certain that dripping or splashed water cannot enter the equipment. Do not place containers
filled with liquids, such as vases or drinking vessels, on the equipment.
13. Make certain that objects cannot fall into the device.
14. Use this equipment only with the accessories recommended and intended by the manufacturer.
15. Open the device for changing the battery, do not modify this equipment.
16. After connecting the equipment, check all cables in order to prevent damage or accidents, e.g., due
to tripping hazards.
17. During transport, make certain that the equipment cannot fall down and possibly cause property
damage and personal injuries.
18. If your equipment is no longer functioning properly, if fluids or objects have gotten inside the equip-
ment or if it has been damaged in another way, switch it off immediately and unplug it from the
mains outlet (if it is a powered device). This equipment may only be repaired by authorized, qualified
personnel.
19. Clean the equipment using a dry cloth.
20. Comply with all applicable disposal laws in your country. During disposal of packaging, please sep-
arate plastic and paper/cardboard.
21. Plastic bags must be kept out of reach of children.
22. If the equipment has been exposed to strong fluctuations in temperature (for example, after trans-
port), do not switch it on immediately. Moisture and condensation could damage the equipment. Do
not switch on the equipment until it has reached room temperature.
23. Do not step on the power cord. Make certain that the power cable does not become kinked, especially
at the mains outlet and/or power adapter and the equipment connector.
24. When connecting the equipment, make certain that the power cord or power adapter is always freely
accessible. Always disconnect the equipment from the power supply if the equipment is not in use
or if you want to clean the equipment. Always unplug the power cord and power adapter from the
power outlet at the plug or adapter and not by pulling on the cord. Never touch the power cord and
power adapter with wet hands.
25. To disconnect the equipment from the power mains completely, unplug the power cord or power
adapter from the power outlet.
26. Unplug the power cord and power adapter from the power outlet if there is a risk of a lightning strike
or before extended periods of disuse.
CAUTION:
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
There are no user serviceable parts inside. Have repairs carried out only by qualified service personnel.
CAUTION – HIGH VOLUME LEVELS WITH AUDIO PRODUCTS!
This equipment is intended for professional use. Therefore, commercial use of this equipment is subject
to the respectively applicable national accident prevention rules and regulations. As a manufacturer, Adam
Hall is obligated to notify you formally about the existence of potential health risks. Hearing damage due to
high volume and prolonged exposure: When in use, this product is capable of producing high sound-pres-
sure levels (SPL) that can lead to irreversible hearing damage in performers, employees, and audience
members. For this reason, avoid prolonged exposure to volumes in excess of 90 dB.
MANUFACTURER’S WARRANTY & LIMITATION OF LIABILITY
You can find our current warranty conditions and limitation of liability at: http://www.adamhall.com/media/
shop/downloads/documents/manufacturersdeclarations.pdf
To request warranty service for a product, please contact Adam Hall GmbH, Daimler Straße 9, 61267 Neu
Anspach / Email [email protected] / 49 (0) 6081 / 9419-0
PROPER DISPOSAL OF THIS PRODUCT
(WASTE ELECTRICAL AND ELECTRONIC EQUIPMENT)
(Valid in the European Union and other European countries with waste separation)
This symbol on the product, or the documents accompanying the product, indicates that this appliance
may not be treated as household waste. This is to avoid environmental damage or personal injury due
to uncontrolled waste disposal. Please dispose of this product separately from other waste and have it
recycled to promote sustainable economic activity.
INTRODUCTION
The PLI04USB is a dedicated interface designed to feed unbalanced stereo audio from your computer’s
USB port to balanced mic inputs of a mixing console. It provides high quality 24-bit D/A conversion and
supports 44.1, 48 and 96 kHz sample rates. Output is transformer balanced on standard wiring male XLR
connectors with individual isolating switches for the left and right channels. In addition, the PLI04USB
features a headphones output with level control plus mono summing and ground lift pushbuttons.
WORKING WITH THE PLI04USB
INPUT SIDE
1
USB Input. Connect a quality USB cable from your computer’s USB port to this input.
2
Sample Rate Indicators. The orange, white and green LEDs indicate the current sample rates of 44.1,
48 or 96 kHz respectively.
3
Power LED. The red LED lights up when the PLI04USB is powered via the USB cable.
4
Headphones Output. Connect your headphones to this 3.5 mm mini TRS jack for monitoring.
5
Headphones Level. This controls the signal volume to your headphones.
6
Mono Switch. Push this button for mono summing a stereo signal. The mono sum will be present
at all outputs turning the PLI04USB into a signal splitter for feeding the left and right XLR outputs into
separate audio systems.
OUTPUT SIDE
7
XLR Outputs L/R. These ouputs carry the balanced mic level stereo signal or the mono sum when
the mono switch
6
is pressed.
8
Isolating Switches L/R. Pushing these buttons provides electrical isolation between computer and
mixing console to eliminate hum and/or computer noise in the audio signal. Most helpful when feeding a
mono sum to individual destinations.
9
Ground Lift Switch. This pushbutton interrupts the ground connection between computer and mixing console
to eliminate hum and/or computer noise in the audio signal. Most helpful in single destination stereo use.
TECHNICAL SPECIFICATIONS
Product Type:
Line Isolator
Type:
active
Number of Channels:
2
Number of Inputs:
1
Input Connector:
USB
Number of Outputs:
3
Output Connectors:
XLR/m, 3.5 mm TRS
Output Type:
balanced
Output Impedance:
550 Ohms, headphones 43 Ohms
Max. Output Level:
14.4 dBu, headphones 8.5 dBu
Transformer Balanced:
yes
Transformation Ratio:
1:2
Frequency Response:
10 – 41000 Hz
Housing Material:
aluminium
Housing Finish:
powder coated
Width:
140 mm
Depth:
95 mm
Height:
35 mm
Weight:
0.68 kg
© Palmer Musical Instruments, Adam Hall GmbH, D-61267 Neu-Anspach, Daimlerstr. 9, Germany TEL: ++49 (0)6081 94190
FAX: ++49 (0)6081 43280 WEB: www.adamhall.com, www.palmer-germany.com EMAIL: [email protected]
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2-CHANNEL USB DI BOX AND LINE ISOLATOR
