AB300 Details


B300-Top (neigbar)

AB300 - Fullrange-Reference-Mainmonitor




KSdigital manufactures each of its loudspeakers by hand in its factory Saarbrücken/Germany. Each loudspeaker is measured individually (IFM) and linearized in frequency and phase. This ensures the unrivalled correct reproduction of the music signal.


Developed for large control rooms, film studios and mastering suites. Of course also suitable for in-wall mounting applications.The AB300 reference system is perfectly calibrated for the room and the installation. A minimum pair deviation of less than 1 dB from the ideal frequency response at the listening position is achieved.

AB300 - 3-WAY Full-Range High Performance Main Monitor



The AB300 is designed as a high-performance reference monitor with time-controlled sound conversion using our patented FIRTEC(TM) technology. Its tonal neutrality and timeliness allow it to be used in all areas of professional production processes, for recording, as a mixed monitor or in mastering as a final reference. Equipped with three super-fast 10" high-performance bass drivers, it allows precise and clean bass reproduction without overshoots/reversals. The addition of the diaphragm surfaces in the compact housing format offers more bass pressure than comparable monitors equipped with 15" bass drivers. The 2" dome midrange driver with the 1" domeless tweeter driver ensures virtually distortion-free reproduction even at higher volumes. Even at lower working levels, the duo convinces with outstanding fine resolution and dynamics without any limits.


The design of the amplifiers and power supplies ensures extremely low-distortion playback with minimal distortion. Our patented FIRTEC system filters ensure phase-linear, time-correct reproduction over the entire frequency range. The waveguides hide the cabinet edges and linearize the frequency response in addition to the digital signal processing. The 1'' high-frequency ring gradiator used ensures low distortion reproduction even at higher levels. The AB300 plays all formats, from CD format to UHD audio, whether connected digitally via the analog input with 24 bit / 192 KHz AD converter or losslessly connected directly.

The high and low shelving filters, accessible from the amp side, allow fast set-up and room adaptation, which can be extended by 6 internal parametric EQs if required with the optionally available KSD-RC. The monitoring volume can also be controlled directly in the monitor so that a digital connection with fullscale level directly from the master output is guaranteed without loss.

Unique at KSdigital is the converterless connection of the PWM power amplifiers. This direct connection prevents converter losses and leads to an extreme resolution in the time and tonal range.


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AB300 - 3-Way Fullrange-Highperformance-Monitor

The acoustic advantages of the AB300:

  • phase-linear playback at minimum latency (lt]5msec)

  • high pulse resistance due to 10" high-performance bass, 2" dome midrange driver and 1" high-performance tweeter driver

  • adjustable to room and installation position by means of 8 filters (bells/shelvings)

  • analog or digital control (24 bit ADC) remotely controllable

  • rotatable mid-high part

  • highest neutrality in the tonal and time structure of the signal



AD / DA converter 24 bit sigma delta, 64 x oversampling
digital IN AES3 format , 32 – 192KHz
analog IN XLR-symmetric
FIRTEC™ equalization, FIR-crossover, limiter,
6 user filter
patent: 19823110
room equalization 5 peakfilter and FIRTEC™ system equalization
chassis 1'' radiator,
3" midrange-cone
3 x 10'' bassunit
amplifier 150W / 250 W / 250 W / 500W peak
SPL 120dB cont./126dB peak
remote control KSD-RC
frequency range 24 - 24000 Hz (+/- 3 dB)

Static holder optionally available
142 x 30 x 40 cm