RL 903BK

3-way-coaxial-loudspeaker with cardioid characteristic in bass range

The Loudspeaker of the type RL903BK is a main control room loudspeaker with cardioids irradiation characteristic within the range of 35 Hz to 250 Hz which can be applied universally in broadcast vans of medium and large size.

(shown veneer: ash black RAL9005)

RL 903BK

The Loudspeaker of the type RL903BK is a main control room loudspeaker with cardioids irradiation characteristic within the range of 35 Hz to 250 Hz which can be applied universally in broadcast vans of medium and large size. By means of the cardioids irradiation characteristic reflections at the backside wall behind the loudspeaker are minimized. The coaxial mid- and high-frequency unit is combined with a highly efficient long deviation chassis. By construction of the loudspeaker in coaxial technology we can reach excellent localization behaviour and optimum imaging of phantom sources. Additionally, by means of various constructive methods the loudspeaker produces extreme low nonlinear distortions. With the special geometric arrangement of the mid- and high-frequency driver unit as well as with the relatively small asymmetric designed front the result gives excellent sound colour neutrality, i.e. sound coloration at a minimum level. In spite of compact dimensions of the box a lower frequency of 35 Hz could be reached.

The three-way power amplifier of the RL903BK with electronic crossover are contained in an external case. For service purposes it can be turned out during operation. The mid- and high-frequency driver unit can be protected by an electronic circuit which reduces the level by 20 dB if the maximum level is overridden. This status will be signalized by an intermittent shining LED on the front side.

Optionally, the mid- and high-frequency unit can be supplied revolved by 90 degrees, that way the speaker can be installed either in vertical or horizontal position. For matching the monitor to the room-acoustical situation within the listening room and its position, the frequency response can be corrected at higher and lower frequencies.

As extras various special stands and mounting supports are deliverable; corresponding mounting elements are integrated to the loudspeaker case.

General

active three-way reference monitor for use in middle and large mobile broadcast vans

Maximum SPL
from 100 Hz ... 6 kHz


110 ... 115 dB / r = 1 m (3.3 ft) (4 π)

Bandwidth

35 Hz ... 20 kHz ± 3 dB

Calibration:
Acoustic output level / PE = - 14 dBu


> 89 dB / r = 1 m (3.3 ft)

Directivity index
from 200 Hz ... 10 kHz


increasing from 2 to 11 dB

Inherent noise sound level

≤ 7 dB (A) / r = 1 m (3.3 ft)

Total harmonic distortion
measured at 96 dB / r = 1 m (3.3 ft)
from 80 Hz ... 10 kHz



≤ - 45 dB

Nominal Input level

+ 6 dBu adjustable

Input impedance

≥ 10 kOhm RC balanced

Electronic Crossover frequencies

250 Hz and 2.6 kHz

Nominal output power MOSFET-amplifier

LF
180 Watt / 4 Ohm
MF
100 Watt / 4 Ohm
HF
100 Watt / 4 Ohm

Input Connector

XLR 3F

Loudspeaker systems

Woofer
200 mm (8") cone
Mid-range unit
130 mm (5") cone
Tweeter
25 mm (1") dome

Operation and Clipping indicator

LED on front side

Power requirements

Europe 230 Volt (± 10 %), AC, 50 Hz
USA & Canada 115 Volt (± 10 %), AC, 60 Hz
Japan 100 Volt (± 10 %), AC, 60 Hz

Power consumption

max. 300 Watt at full load

Mains Connection

IEC power connector

Dimensions (H x W x D)

Loadspeaker
415 x 254 x 275 mm (16.34 x 10 x 10.83 in)
Amplifier
475 x 279 x 120 mm (18.7 x 10 x 4.7 in)

Weight

Loadspeaker
15 kg (33 lbs)
Amplifier
11 kg (24.2 lbs)

Temperature requirements

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

Design of the Cabinet

MDF-wood in ash black veneered, optional different veneers or colors
with holding device; optional without holding device

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.