RL 906D

2-way-coaxial-loudspeaker in vented box and with AES3 connector

The RL906D is a compact two-way loudspeaker consequently optimised for usage as a near-field monitor. Either in an outside broadcasting van, on top of the meter bridge or in the home studio and even as an precious hi-fi monitor it is more than convincing.

(shown veneer: american cherry nature)

RL 906D

The RL906D is a compact two-way loudspeaker consequently optimised for usage as a near-field monitor. Either in an outside broadcasting van, on top of the meter bridge or in the home studio and even as an precious hi-fi monitor it is more than convincing.

The RL906D is identical in construction to the RL 906, which comes with an additional AES3 digital input. There is an input selector on the back, where the left channel, the right channel or the mono sum could be selected. According to all our other products, there is also the possibility to use an analogue input signal. To synchronize the digital audio signal, with the video signal, you could delay it in 16 steps frame wise. The frame refresh rate could be programmed internal.

By Musikelectronic Geithain’s coaxial technology a directivity was realised, that is especially adjusted to the requirements of near-field monitoring, meaning small base widths and short listening distances. Homogeneity, neutral tone quality and directional definition are most widely compatible to the greater speakers from the RL series. This allows seamless working without familiarisation phases along the whole audio production, regardless if it is in an outside broadcasting van, the cutting room or in the great studio. The RL906D is barely greater than a controlling monitor, but it houses the power capability of a full-valued studio monitor. The bass reproduction as well as the maximum level meet the requirements of most challenges. In 5 channel applications, demanding a higher level in the lowest frequency range, the RL906D is perfectly combined with our models from the Basis series whereby it moves closer to the greater models.

The loudspeaker is equipped with a 13 cm (5”) cone woofer and a coaxial arranged 25 mm (1”) tweeter. Each is powered by a separate MOSFET-amplifier with active crossover and electronic overload protection. The amplifier is situated in the back of the cabinet. The RL906D provides a balanced XLR-type input with an adjustable input level. To compensate their placement, the speaker features three controllers to continuously adjust the high- and low-frequency response and also the frequencies around 300 Hz. These controllers are attached to the cabinet’s backside. A two-coloured LED indicates the state of the amplifier and warns of clipping.

A variety of special stands and racks is available as accessories. According fixing elements have been integrated into the loudspeaker cabinet.



active two-way coaxial loudspeaker for listening distances between 1 and 2.6 m

Maximum SPL
from 100 Hz ... 3 kHz

104 ... 108 dB / r = 1 m (3.3 ft)


50 Hz ... 20 kHz ± 3 dB

acoustic output level / PE = - 14 dBu

76 dB / r = 1 m (3.3 ft)

Directivity index
from 200 Hz ... 10 kHz

increasing from 1.5 to 11 dB

Inherent noise sound level

≤ 7 dB (A) / r = 1 m (3.3 ft)

Total harmonic distortion
measured at 83 dB / r = 1 m (3.3 ft)
from 150 Hz ... 10 kHz

≤ - 40 dB

Nominal input power

+ 6 dBu adjustable

Input impedance

≥ 10 kOhm RC balanced

Electronic crossover frequency

3 kHz

Nominal output power amplifier

80 Watt / 4 Ohms
80 Watt / 4 Ohms

Input connector

XLR 3F for AES3 and analogue

Input choise switch for input connector

analogue signal
AES3 left
AES3 right
AES3 left + right

Rotary switch for delay

16 positions for up to 16 frames delay

Frame rate

standard setting
50 Hz / 1 switch position ≙ 20 ms
programmable frequencies
24 Hz; 25 Hz; 29.97 Hz; 30 Hz; 50 Hz; 59.94 Hz; 60 Hz

Supported sampling rates

44.1 kHz; 48 kHz; 88.2 kHz; 96 kHz; 176.4 kHz; 192 kHz


24 bit


130 mm (5") cone
25 mm (1") dome

Operation and clipping indicator

LED on front side

Power requirements

230 Volt ~ ± 10 %; 50 ... 60 Hz
115 Volt ~ ± 10 %; 50 ... 60 Hz (optional)
100 Volt ~ ± 10 %; 50 ... 60 Hz (optional)

Power consumption

max. 100 VA at full load

Mains connection

IEC power connector

Dimensions (h x w x d)

255 x 180 x 200 mm (10 x 7.1 x 7.9 inch)


5.5 kg (12.1 lbs)

Temperature requirements

for use
+ 15°C ... + 35°C
for storage
- 25°C ... + 45°C
45 ... 75 %

Design of the cabinet

MDF wood in ash black; optional other veneers or colors
with holding device; optional without holding device

Floor bracket stand RL906

  • Loudspeaker rotable mounted
  • Deliverable heights (Top edge loudspeaker): 1100 mm (43.3 in), 1330 mm (52.4 in), 1460 mm (57.5 in) and 1600 mm (63.0 in)
  • Base panel (W x D): 380 mm x 350 mm (15.0 in x 13.8 in)
  • Base panel and stabilisation panel veneered
  • Racks black powder-coated

Pedestal RL906

  • Integrated cable duct in the pedestal
  • Height (Top edge loudspeaker): approx. 1061 mm (41.8 in)
  • Base panel (W x D): 265 mm x 280 mm (10.4 in x 11.0 in)
  • Pedestal veneered

Table stand with cast base RL906

  • Loudspeaker rotable mounted
  • Deliverable height (Top edge loudspeaker): 455 mm (17.9 in)
  • Diameter of the cast base: 180 mm (7.1 in)
  • Table stand with cast base black powder-coated

Wall bracket RL906

  • 35° tilting und 35° rotable
  • Wall bracket black powder-coated

Ceiling bracket RL906

  • Loudspeaker rotable mounted
  • Standard height between adapter plate and bracket: 300 mm
  • other length available
  • Ceiling bracket black powder-coated

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.