4 CHANNEL POWER AMP TA 4D
OPERATING INSTRUCTIONS
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optimal performance. Warning – be certain that all speaker cables are wired identically at each end.
Two amplifiers being bridged together can create fatal damage to the drivers.
3.6 Power Supply
The KS Audio TA4 D power amp uses a state-of-the-art, heavy duty and wide-range switch mode
design, with Power-Factor-Correction (PFC) built in. This power supply will accept any AC input
from 96 – 250v, 50 / 60Hz. It is connected via a Blue Neutrik PowerCon AC connector with
protective leader. As the power amplifier unit is properly grounded, please ensure, for your own
safety, that the power circuit you are plugging into is properly grounded as well. KS Audio
amplifiers are very efficient, therefore, the demand for electricity is quite low. Please Note: Be sure
that the actual current draw for all speakers on the supply circuit do not exceed the maximum fuse
rating on each speaker. After switching the amplifier on with the MAINS switch, a soft-start is
activated first. This is to protect the system and all the components involved. Once the electronic
protection circuits have confirmed that the system is running under normal conditions, the outputs
are activated and the amplifier is ready to operate. The power supply is a state-of-the-art, heavy
duty and wide-range switch mode design, with Power-Factor- Correction (PFC) built in. The start-
up voltage is limited to assure maximum protection. A second widerange and heavy duty switch
mode power supply, with PFC, is used to independently supply the controller card electronics
along with the low voltage cooling fans and, the stand-by ON/OFF system, via the KS remote digital
controller system.
3.7 Output Mute Switches
A very practical feature when running larger sound systems are the 4 mute switches - one per
channel – on the front panel of the power amplifier. The red LED indicates the MUTE is ON or
activated. Each amplifier output can be isolated. There is also a green "signal present LED" that
indicates any audio source above - 30dB. In the KS Audio FIRMOD 2 digital controller card, mute
switches are available in the selected program. In this case “ACTIVE” means that the output is
activated, not that the MUTE is active.
4. CLEANING OF AMPLIFIER
The fitted mesh filters ( foam) for the the cooling system should be reguarly cleaned to maximize
the air flow into the unit. The breath of live sound The art of sound Handcrafted and engineered in
Germany
5. TRANSPORTATION
KS products are tools for daily use and are correspondingly robustly manufactured. You should,
however, be aware of these aspects of note:
As with all types of electronic devices, condensation and moisture must be avoided i.e. when the
speaker comes from a cold and humid truck and is brought into a warm venue, give the system as
much time as possible to heat up to venue temperature before powering on. Of course, direct
exposure to liquids is never safe and should be prevented at all times. The vibrations of a transport
vehicle are safe - all components and cabinetry are well secured with screwed or bolted parts for
extra strength where necessary. It has however been shown that train or airplane transport without
further packaging creates un-due stress on KS products. We recommend for such situations shock
resistant flight cases. Significant contamination by dust, etc. is dangerous for Electronic assemblies
as it may cause a short circuit. It is therefore advisable, that the devices are periodically opened,
and cleaned out with compressed air.
