The box PA 502 A User manual

Owner‘s Manual
ACTIVE 2-WAY
FULL RANGE SPEAKER
PA 502 A

2
Important Safety Instructions
For your own safety you must read this section in full
rst!
Intended use
This active speaker is intended exclusively for the transmission of audio
signals according to this manual and the specications given here. By
using it in any other way you face the risk of electric shock. No warranty
claims will be granted for damage resulting from improper use!
Risk of electrical shock!
Connect the device only to a properly wired and earthed electrical•
wall socket providing one of the mains voltages listed in the chapter
“Technical specications” of this manual. Pay attention to the correct
setting of the mains voltage switch.
NEVER operate the speaker box if the power plug or power the cord is •
damaged.
NEVER submerse the speaker box in water. Liquid getting into the box •
will risk a short circuit and will be hazardous.
NEVER expose the speaker box to direct precipitation or moisture •
and never use it in a damp or wet environment. This speaker box was
developed for indoor use only. Do not use it outdoors.
Do not subject the speaker box to high temperatures, direct sunlight, •
severe vibrations, shocks or tremors, or excessive dust.
Ensure that the power cord does not become wet during operation.•
You must NEVER open the housing of the speaker box or try to repair it. •
There are no user serviceable parts inside. Warranty will become void if
you open the housing and you face the risk of electric shock.
Do not place objects containing uids, e.g. ower vases or beer bottles, •
on or near the device.
Notice regarding power disconnection:•
To switch the device off and to disconnect it from the power source the
power plug must be removed from the power socket. For this reason the
device should be placed in a position where a constant unobstructed
access to the power socket is assured, thus in an emergency situation
you are able to immediately pull out the power plug. To eliminate the
risk of re you must completely disconnect the power plug from the
power socket after the device has been used.

3
Always grasp the power cord by the plug. Do not pull on the cord itself •
and never touch the power cord with wet hands as this could result
in a short circuit or an electrical shock. Do not place the device, other
speaker cabinets or anything else on the power cord and make sure
that it does not become clamped. Place the power cord in a position
where it can not be trod on. A damaged power cord can cause a re
or an electrical shock. Check the power cord from time to time. Should
it become damaged contact our customer service centre to have it
replaced.
 Riskofre!
NEVER leave the device unattended while it is switched on.•
Do not place any open sources of re, like candles, on the device.•
Never operate the speaker box in the vicinity of heat sources such as •
cookers, heating elements, lighting equipment, smoke machines, or
other heat producing installations.
When a thunderstorm with the risk of lightening threatens please •
disconnect the device from the mains power.
Risk of personal injury!
Keep the power cord and device away from children. Children •
frequently underestimate the dangers of electrical equipment.
Ensure a safe location for the device• . Flying and installation of this
speaker cabinet must be carried out by suitably qualied personnel
following the approved safety standards.
Do not stack the speaker cabinet in a manner that could cause injury •
should a cabinet become dislodged.
Do not operate the device if it has sustained a fall or is damaged. •
Arrange for the device to be checked and/or repaired by qualied
technicians.
Important!• Keep sufcient distance from the speaker box when
operated with high volume level. Listening to music with high
sound pressure level may cause permanent damage to your
hearing!
Before connecting or operating this speaker box, please study and •
follow the instruction manuals of all devices connected to the box,
paying particular attention to the operating precautions and wiring
procedure.

4
The operating elements

5
1. CLIP
Clipping indicator. When this indicator is ashing, please reduce the
volume to assure safe operation with clear audio output.
2. LOW CUT @ 120 Hz
Press this button to activate a low frequency attenuation below 120 Hz
to reduce stage rumble noises and thereby protect the woofer.
3. MIC
Microphone input signal presence indicator.
4. LINE
Line input signal presence indicator.
5. LINE/MIC
Level adjust switch for the input. For safety reasons this switch
needs to be pressed deeply with a pen-like opject, until it clicks into
place. Press down this switch, when connecting audio signals with
microphone level to the INPUT socket. Release the switch, when
connecting line level signals.
6. 115V/230V
Mains voltage selector. Make sure this selector is set correctly for the
supply voltage at the place of operation.
7. BASS
Turn it clockwise to increase the low frequencies. Turn it
counterclockwise to attenuate the low frequencies.
8. TREBLE
Turn it clockwise to increase the high frequencies. Turn it
counterclockwise to attenuate high frequencies.
9. VOLUME
Volume control. Increase the volume by rotating clockwise and
decrease the volume by rotating counter-clockwise. Attention: First
please adjust the volume to minimum before switching the unit on and
transmitting signals. Then adjust to appropriate volume.
10. OUTPUT socket
Line output. Connect here additional active speaker boxes.
11. INPUT socket
Connect the input device here.
12. Mains Fuse
If this fuse blows, a qualied technician must replace it by a new one
of same specications.

6
13. Power supply input
Make sure that the voltage selector yis set correctly for the supply
voltage at the place of operation, BEFORE you connect the mains
power.
14. ON/OFF
Power ON/OFF switch. Press on “I” marking to switch the active
speaker on. Press on “O” marking to switch the active speaker off.
Technical specifications
Mains voltage ............................... : AC115V~, 50/60Hz
....................................................... : AC230V~, 50/60Hz
System .......................................... : Built-in crossover two way full range
active speaker
Cabinet material ........................... : Polypropylene, Trapezoid
Cabinet Color ................................ : Black
Driver Quantity .............................. : 1 x 15” Ø (Bass)
1 x 44 mm Ø Driver
Tweeter Dispersion(HxV) .............. : 50° - 100° x 55°
Frequency Response (-3dB) ........ : 40Hz - 18kHz
Frequency Response (-10dB) ...... : 35Hz - 20kHz
Max Sound Level .......................... : 120dB/1m
Level Adjust .................................. : ±12dB (10kHz) - Treble
±12dB (100Hz) - Bass
Output power ................................ : 300W (Bass) + 100W (Treble)
Distortion ...................................... : Line - 0.02%, Microphone - 0.04%
Load impedance ........................... : Treb - 8Ω, Bass - 8Ω
Input impedance ........................... : Balanced - 20kΩ, unbalanced - 10kΩ
Connectors ................................... : XLR, K3P, J3P
Dimensions (WxDxH) ................... : 488 x 460 x 720mm
Packing Dimensions (WxDxH) ..... : 545 x 515 x 800mm
Net Weight .................................... : 30.5 kg/pc
Gross Weight ................................ : 32.5 kg/pc
As we continuously strive to improve our products, all specications and
appearance are subject to change without prior notice.
Cleaning and Care
Do not attempt to clean the plastic enclosure with solvents or
petrochemical based cleaners. Wipe it only with a slightly damp cloth.

7
Disposal
Do not dispose of the device at the end of his operating life
in your normal domestic waste. This device is subject to the
European Guidelines 2002/96/EC.
Have the product disposed of by a professional disposal company of by •
your communal disposal facility.
Observe the currently applicable regulations. In case of doubt contact •
your disposal facility.
Dispose of packaging materials in an environmentally •
responsible manner.

© 2010
Musikhaus Thomann
Treppendorf 30 • 96138 Burgebrach • Germany
www.thomann.de