Active-bass-loudspeaker with cardioid radiation characteristic in bass range

The active bass loudspeaker BASIS 14K serve as complement for the lower octave of our active studio monitors and as central bass unit in stereo reproduction.

(shown veneer: ash black RAL9005)


The active bass loudspeaker BASIS 14K serve as complement for the lower octave of our active studio monitors and as central bass unit in stereo reproduction. Optionally, the BASIS model can also be integrated into surround loudspeaker systems with our multi-channel bass processor BCU7.1. Furthermore, the subwoofer can be operated with suitable AV receivers to also allow optimal cooperation with our passive high-end loudspeakers.

For our active bass loudspeaker, we have developed a special long-stroke bass system that ensure a low-distortion reproduction. The BASIS 14K have a cardioid radiation characteristic for minimisation of rearward room reflections. The so-called K Technology, which we already have been using successfully since many years in our 3-way and 4-way active loudspeakers, features rearward-directed attenuation greater than 10 dB. Thus, excellent results can be achieved for room-dependent frequency response even in rooms with difficult acoustic conditions. This construction principle significantly simplifies the positioning of the bass loudspeaker in the listening room.

The power amplifier is operated with a 1000-W PWM power module. An electronic limiter serves as protective device and keeps the bass driver from overloading. An LED on the reverse side signalises activation of the protective device and operating status of the bass loudspeaker. The distance between front loudspeaker and bass loudspeaker may be between 0 and 1 m. In this range a phase correction is possible. With an activatable high-pass filter, the threshold frequency can be raised to 40 Hz. The cut-off frequency can be adjusted continually between 60 and 80 Hz. The transmission range of the LFE channel ends at 120 Hz. The entire control and power electronics including all connecting and operating elements are integrated into the reverse side of the cabinet.

The bass loudspeakers are optionally available with a grid cover. An output on the subwoofer allows the operation of the BASIS 14KP passive bass loudspeaker. This expansion provides a power doubling and makes the choice of the location less critical. Also, the system can be switched into bypass mode with the aid of a cable remote control. All output channels are directly connected to the input channels - the bass channel is deactivated, the LFE channel remains activated.


Bass addition for our active loudspeakers and as subwoofer for our passive high-end loudspeakers

Cabinet design

with cardioids characteristic

Maximum SPL
measured at f = 63 Hz

122 dB / r = 1 m (3.3 ft); 2 pi


25 Hz ... (60 Hz ... 80 Hz, cont. adjustable) - 6 dB; 2 pi

with HPF
40 Hz ... (60 Hz ... 80 Hz, cont. adjustable) - 6 dB; 2 pi
25 Hz ... 120 Hz - 6 dB; 2 pi

Total harmonic distortion
measured at PE = - 14 dBu and f = 50 Hz

89 dB / r = 1 m (3.3 ft)

Inherent noise sound level

GK0 / DIN 15996 r = 1 m

Nominal Input level

- 9 dBu ... + 6 dBu adjustable

Nominal Output level HP
CH1, CH2

+ 6 dBu at 2 kOhm balanced

Input impedance

≥ 10 kOhm RC balanced

Bass output level


Output power of the PWM-amplifier

max. 1000 W / 4 Ohm

Electronic Crossover frequencies

TP 24 dB / Okt.
HP 12 dB / Okt.

Distance compensation

adjustable from 0 ... 1 m (3.3 ft) difference to the front speaker's plane

Power requirements

90 ... 132 V, 55 ... 65 Hz or 190 ... 265 V, 45 ... 55 Hz

Power consumption

20 VA at stand-by, max. 500 VA at full load

Operation and Clipping indicator

LED on back side

Input Connector

3x XLR 3F

Output Connector

3x XLR 3M
1x Speakon NL4 (activation BASIS 11KP

Connector for bypass-mode switch (Remote)


Connector for BCU7.1 (MPI)


Loudspeaker system

400 mm (15") cone

Dimensions (H x W x D)

550 x 500 x 430 mm (21.6 x 19.7 x 16.9 in)


37.8 kg (83.2 lbs)

Temperature requirements

for use
+ 15°C ... + 35°C (59°F ... 95°F)
for storage
- 25°C ... + 45°C (- 13°F ... 113°F)
45 ... 75 %

Design of the Cabinet

MDF-wood in ash black veneered; optional different veneers or colors
with handles; optional without handles

Standard veneer ash black (RAL9005), optional veneers and optional colours

We offer our loudspeakers in standard veneer ash black (RAL9005) or for an additional charge in different optional veneers respectively optional colours. This website provides an overview on the optional veneer and lacquer styles. We are pleased to check if your desired individual veneer and colour can be realised.

Important information about deviations from sample pattern

Wood is a natural product. Even the most thorough manufacturing can result in deviations in colour or structure and is no cause for complaint.
Images are represented differently on every screen and hence not colour-proof.