CA 4D
“4 Channel MOSFET Power Amplifier.”
CA 4D The bi-amp specialist.
By designing an asymmetrical amplifier with 2 channels of double power, an ideal amplifier is created to drive very many typical active loudspeakers.
With 700 watts on channels 1 and 3 and 350 watts on channels 2 and 4, the CA 4D has the perfect power to provide even heavier active loudspeakers with sufficient power.
Also for the CA 4D, KS AUDIO has opted for the Class H MOFET amplifier technology, which aurally beats the Class D competition.
In addition, the CA 4D is unique in that, in combination with the KS AUDIO D MOD or F MOD, it is able to act as a system amplifier for no less than 6 different system configurations.
The basic philosophy.
KS AUDIO has been manufacturing loudspeaker systems with dedicated audio controllers since its inception. Further- more, the brand ensures that from the input signal onwards, all components and parts are perfectly matched to achieve the best performance.
While the loudspeaker systems were initially electronically optimised with analogue SIM controllers, KS AUDIO has switched to a digital version with FIR filters since 1995!
With these FIR filters, not only is the frequency response adjusted, but the entire system is optimised “in time” over the entire frequency range. This results in an almost perfect impulse response. This unique approach, which results
in products with the same sound characteristics, is called FIRTEC™.
In contrast to the current PWM/Class D standard in the world of professional amplifiers, KS AUDIO uses Mosfet amplifier technology in combination with a switching power supply, the so-called Class H amplifier technology. KS AUDIO uses 3 positive and 3 negative supply voltages to optimise the efficiency.
The reason for this choice is simple, we find the sound of this amplifier technology, especially at high frequencies, better than that of Class D technology with today’s standards.
The combination of their unique FIRTEC™ technology, the use of the best components, the MOSFET-amplifier techno- logy and of course the revolutionary acoustic solutions give them a lead in professional audio.
It is not for nothing that KS AUDIO is widely known for its superior sound.
The CA 4D.
The KS AUDIO CA 4D is a unique solution for all applications in the field of professional sound reinforcement. From a linear 4-channel power amplifier to a “digitally controlled multiway pa system”, you can obtain any conceivable configuration by simply changing the program on the
F MOD or by loading another program into the D MOD by using a USB stick.
With the digital controller F MOD and D MOD, all systems are operated with state-of-the-art linear-phase FIRTEC™ equalisation.
A special feature of the CA 4D/F MOD combination are the multiple signal inputs. You can not only connect 4 balanced analogue signals but also two AES3 signals, making 4 digital channels available.
Not only can each input in a matrix be assigned to any amplifier channel, but analogue and digital signals can also be used simultaneously. An input is automatically switched from analogue to digital as soon as an AES3 signal is detected and vice versa.
Optionally, the amplifier can also be equipped with a DANTE™ module, which provides another 4 channels according to the DANTE™ protocol. These signals can be used in addition to the analogue and AES3 inputs.
These 12 simultaneously usable signal paths often make the use of a matrix mixer in the installation superfluous.
The function of the 4 speakON power outputs is automatically adjusted: They switch to ́single ́, ́bi-amp ́ or ́bridge ́ mode as required.
The XLRs are optionally input or output, for both analogue and AES3 signals. When operating with the DANTE™ option, the network can be easily connected via the integrated switch.
The CA 4D naturally contains all the protection devices in the power output stages. The 4 channels are largely independent of each other, so that, for example, in the event of under-impedance on a line, only the respective channel is switched off. The ́ready ́-state is displayed separately. In addition, the three fans, which are infinitely variable over a wide range, with an easy-to-clean air filter at the front, offer a high level of comfort.
A 1.5 mm thick 19" sheet steel housing, large handles, a 4 mm front panel and, if required, rear mounting brackets underline the robustness of this unit.
The wide-range switching power supply works with PFC on almost any AC voltage. When designing the mains supply, it must be ensured that sufficient connected load is available for each CA 4D. The fuse protection must be slow-blow.
Applications.
Ideal for KS AUDIO unpowered active compact loudspeakers
Related products.
D MOD - 4 channel FIRTEC™ DSP module
F MOD - Advanced 4 channel FIRTEC™ DSP Module