11038885_V_1_0.DOC
23/31
The reason why some people have got accustomed to a certain noise level and are no longer disturbed is
that they have already suffered a hearing damage. This damage make the unsensitive to those frequencies
forming the loudest part of the noise. Getting accustomed to noise does not mean anything oter than trying
to get along with the hearing loss in everyday life. The hearing loss itself cannot be healed, it can only be
compensated by hearing aids.
Subjectively, the hearing loss feels like dampened ears. This effect weakens with the time, but a loss in
hearing sensitivity often remains.
In order to relax the hearing sufficiently, the noise level should not exceed 70 dB(A) for 10 hours. Higher
noise levels during this relaxing period can prevent the relaxation and promote a permanent hearing damage
(Tinitus) or hearing loss.
Therefore:
Whoever wants to maintain his hearing should use hearing protectors!
4. DESCRIPTION OF THE DEVICE
4.1 Features
Portable 120 W PA-system
• PA-system with 4-channel mixer, power amplifier and integrated 2-way speaker-system
• A full success as ideal PA-system for professional promotion events "on the road" or for hobby promotion
shows
• Easy transportation via telescopic trolley-handle, 2 wheels and transport handle
• Ideal for all mains independent and wireless applications like seminars, conferences, presentations,
tradeshows, fashion shows, solo entertainers, weddings, sales booths, aerobics etc.
• Power supply either via 230 V, internal rechargeable batteries or car battery
• Delivery includes 5 meter connection cable for cigarette lighter
• Connection of up to two cabled mics
• Mic input via XLR/jack socket on the top panel
• Switchable and adjustable echo-effect for mic-channels
• Connection of further Line-signals via two stereo-channels (RCA or jack), e.g. for playing back Multi-Media-
applications from PC, Laptop or portable MP3-player
• Integrated 5-band-equalizer for fine-tuned sound
• Powerful amplifier included
• 10" woofer included
• With Line Out-socket for connecting further PA-systems
• Speaker-output for connecting external speaker-system (switches internal speakers off)
• Impact-resistant steel grille
4.2 Connections
Install the device on a solid, plane, anti-slip, vibration-free, oscilation-free and fire-resistant surface.
Make sure that the power switch is set to OFF. Before you connect the devices, all units have to be switched
off.
The inputs of this PA-system are to be directly connected with the outputs of your audio source. Solo
entertainers can also directly connect their keyboard with the stereo channels' RCA-sockets. Further
microphones have to be connected with the Mic-sockets. Never connect any input with an amplifier output!
A good cable run improves the sound quality remarkably. Input cables should be short and direct, since high
frequencies will mostly be absorbed if the cables are unnecessarily long. Besides that a longer cable may
lead to humming and noise trouble. If long cable runs are unavoidable, you should use balanced cables.
In order to obtain highest sound quality, only use high-quality cables for connecting the devices. Make sure
that the cables are properly fixed.
At the mono input channels, the microphone signals are connected via the XLR-sockets, the line-signals via
the jack sockets.
