musikelectronic geithain RL 940 User manual

RL 940
RL 940C
Instructions for installation and use
musikelectronic geithain

2
RL 940 / RL 940Cmusikelectronic geithain gmbh
Inhaltsverzeichnis
1 Introduction 3
2 System description 4
3 Basic information 5
3.1 Guidelines 5
3.2 Safety instructions 5
3.3 Unboxing 6
3.4 Delivery contents 6
3.5 Cleaning 6
3.6 Environmental conditions 6
3.7 Guarantee acknowledgements 6
4 Positioning 7
4.1 Positioning near walls 7
4.2 Stereo operation 7
4.3 Surround operation 8
4.4 Alignment of the center speaker RL940C 9
5 Connecting the speakers 10
5.1 Mains connection 10
5.2 Cable connection 10
5.4 Status indication 11
6 Technical data 12
7 Acoustic measurements 13
8 Accessories 14
8.1 Fork stand 14
8.2 Pedestal 14
8.3 Wall mounting 14
8.4 Ceiling mounting 14
9 Notes 15

3
RL 940 / RL 940Cmusikelectronic geithain gmbh
Introduction
1Introduction
Dear customer,
Thank you for the trust you have put in us by buying these speakers. You decided upon a quality product that
in regard to tonal and technical characteristics complies to the utmost expectations.
The usual burn-in period is not required, because the speakers are articially aged in-house.
Please read the technical description and manual to take advantage of the capabilities of these
speakers and ensure safe operation.

4
RL 940 / RL 940Cmusikelectronic geithain gmbh
System description
2 System description
The RL 940 has been designed for both the professional user at small to medium-size audio, video and
lm studios and for the discerning music enthusiast. With the directivity index optimized for mid-distance
monitoring, an excellent depth arrangement with neutral colouration is achieved. The coaxial conguration
of the drive units delivers a sound stage with outstanding authenticity and consistency of imaging. The
loudspeaker also distinguishes itself at high listening volumes through the presence of exceptionally low
levels of non-linear distortion. The vented cabinet is tuned to 38Hz and allows an uncompromising impulse
response. The total system is additionally optimized for group delay.
The two channel amplier with an electronic crossover is integrated within the rear of the enclosure and can
be hinged out for maintenance purposes. An intermittent ashing LED indicates when the level reaches the
system overload threshold. If the maximum level is exceeded continuously, the output level is attenuated
by 20 dB to protect the components from damage. Two gapless variable low frequency controls provide
separate adjustment of two frequency bands to enable the frequency response to be matched to the acoustic
environment of the listening room.
In surround systems the RL 940 performs excellent as front and eect loudspeaker. As a center speaker the
RL 940C was designed, which is better integrable due to its lesser height. In addition the speaker is inclinable
up to 15° to the top with the height-adjustable feet at the cabinet bottom. Therefore a perfect alignment
to the listening position is possible. The center speaker RL940C doesn‘t fall behind the RL940 regarding
acoustical and technical performance. In connection with one of our BASIS models the surround system is
perfectly complemented.
A variety of special stands and holding devices are available as accessories to the RL940; appropriate mounting
elements are integrated into the cabinet. A variety of special stands and holding devices are available as
accessories to the RL 940; appropriate mounting elements are integrated into the cabinet.

5
RL 940 / RL 940Cmusikelectronic geithain gmbh
Basic information
3 Basic information
3.1 Guidelines
This product complies with requirements of current European and national guidelines (Elektromagnetische
Verträglichkeit 89/336/EWG).
Products built by us belong to B2C-class of the WEEE guidelines and must not be
disposed with domestic waste.
3.2 Safety instructions
Like using any other electrical device you should observe the following operation guidelines, safety instructions
and warning signs to ensure optimum functionality and safety of operation!
;Read these instructions carefully.
;Keep these instructions.
;Do not attempt to service this product yourself as opening or removing cover may expose you to dangerous
voltage or other hazards.
;Do not install the device near any heat sources.
;Do not expose the device to direct sun radiation.
;Do not install the device in rooms with high humidity.
;Do not try to insert anything into device openings.
;The device shall not be exposed to dripping or splashing and no objects lled with liquids shall be placed
on the device.
;There is risk of electric shock when the device is open.
;Refer all servicing to qualied service personnel.
;Clean only with dry or slightly moistened cloth.

6
RL 940 / RL 940Cmusikelectronic geithain gmbh
Basic information
3.3 Unboxing
The speakers are shipped in proper condition. Unpack the speaker carefully and check for visible damages. In
case of damages report them to your retailer. Keep the packaging, in case the speaker has to be transported
in the future.
3.4 Delivery contents
;Speaker
;Technical description and user manual
;User manual for unboxing
3.5 Cleaning
The speaker is made of real wood veneer and be nurtured in the same way as furnishings. We advice quality
wax polish to ensure durability of the veneer. Surfaces can also be cleaned with tidy, slightly damped, fuzz-
free, smooth cloth.
3.6 Environmental conditions
Ensure the following environmental conditions in your listening room:
;Operating temperature + 15°C ... + 35°C
;Storage temperature range - 25°C ... + 45°C
;Relative humidity 45 % ... 75 %
3.7 Guarantee acknowledgements
Opening the device by unauthorized personnel leads to all claims under guarantee expire. In case of destruction
by overload, misuse or outside inuences there are no claims under guarantee.

7
RL 940 / RL 940Cmusikelectronic geithain gmbh
Positioning
4Positioning
Our speakers do not impose special requirements neither in stereo nor in multichannel set-ups. Nonetheless
speaker positioning has inuence on listening impression because every room is individually designed and
furnished. The following advices are just guidelines that ease proper positioning. In addition we oer a
measurement service to take advantage of the capabilities of your listening environment.
4.1 Positioning near walls
When speakers are installed near walls sound quality is physically aected.
Every customary speaker behaves as a punctual sonic source in the
low frequency range, with sonic waves spherical radiated without any
constructional measures. Back wall reections are unavoidable.
For optimum listening experience a minimum distance of 50 cm (20ʺ) to
walls and furniture should be ensured. Avoid corner installations because
unwanted bass accentuation could arise.
b ≥ 0.5 m (20ʺ)
4.2 Stereo operation
The optimum position of the speakers in your listening
environment is the so-called stereo triangle (see
gure). The base distance between the speakers and
the distance to the hearing zone form an equilateral
triangle (stereo triangle). A distance less or more than
distance a should be avoided. For precise, spacial
reproduction turn the speakers inside, directed to the
hearing zone.
a = 1.5 ... 3m (5 ... 10 ft)
60°
Hörzone
a
a
a
b
b

8
RL 940 / RL 940Cmusikelectronic geithain gmbh
Positioning
4.3 Surround operation
In surround operation the stereo triangle (see Stereo operation) is extended to a circle. The hearing zone is
the centre of this circle. Position all speakers in the same distance to the hearing zone. The centre speaker is
positioned in the middle between both front speakers. Pay attention to positioning the front and rear speakers
horizontally along one plane. The angle between centre and rear speakers should be about 110° - 120°.
In case installation in the prescribed way is not possible in your listening room most decoding devices allow
adjustments of single speakers.
Hörzone
aa
a
a
a
110° ... 120° 60°
a = 1.5 ... 3m (5 ... 10 ft)

9
RL 940 / RL 940Cmusikelectronic geithain gmbh
Positioning
4.4 Alignment of the center speaker RL940C
In order to allow a perfect alignment of the center speaker RL 940C to the listening position, three height-
adjustable feet, consisting of an M8 or M10 threaded bolt and a support surface supported in the ball joint, are
located in the housing bottom of the loudspeaker. The design ensures that the feet of the feet are always ush
with the ground at every adjustable tilt angle. The M10 threaded bolt of the front foot has a ejection length of
65 mm (2.6ʺ) and therefore a maximum inclination angle of 15° upwards is possible. Twist the two rear legs,
with M8 threaded bolts and having a screw-in length of 15 mm (0.6ʺ), out of the bottom of the enclosure only
so that the support surface of both feet can move freely in the ball joint. As a result, these supporting surfaces
can also assume the set tilt angle.
When aligning the RL 940C, pay attention to the maximum ejection length of the heigh-adjustable feet as they
can be completely screwed out of the enclosure (see the next gure).
Do not operate the center speaker without the preassembled height-adjustable feet, otherwise air escapes
through the threaded holes, aecting the reproduction qualtiy.
When setting up the center speaker, make sure that there is at least 5 cm (2ʺ) space above the loudspeaker.
max. 65 mm
max. 15 mm
15°

10
RL 940 / RL 940Cmusikelectronic geithain gmbh
Connecting the speakers
5 Connecting the speakers
In this chapter we inform you how to connect your speakers to mains and your signal source. Ensure that
the mains switch on the backside is in position “OFF”. Only when your speaker is completely connected (see
chapters 5.1 and 5.2) you can take the device into operation by use of the mains switch.
The speaker can be connected to every common pre-amplier (Ua= 1 V ... 5 V; Ri < 600 Ω).
5.1 Mains connection
Check the mains voltage state on the backside of the device. If your local mains voltage does not match the
specication of the speaker, please refer to your retailer or direct distribution. When the stated and your local
mains voltage comply connect the mains connector of the speaker to the socket with the included mains cable.
5.2 Cable connection
The input of the integrated amplier is electrically balanced. When your signal source also utilizes balanced
connectors, please use a cable wired as stated in the table:
Balanced connector
(amplier)
Balanced connector
(signal source)
Unbalanced connector
(signal source)
XLR XLR RCA
Earth Pin 1 Pin 1 Ring
Signal + Pin 2 Pin 2 Tip
Signal - Pin 3 Pin 3 Ring
When using a signal source with unbalanced outputs (RCA) you need to balance the connecting cables. This
avoids hum and other noise interferences. The table and the following gure show the wiring.
Unbalanced RCA to balanced XLR Connections
Loudspeaker (XLR-3M) Cable Source (RCA)
1 2
3

11
RL 940 / RL 940Cmusikelectronic geithain gmbh
Connecting the speakers
5.3 Adjustment controller
The “Level” controller is used for level adjustment over the full frequency range.
5.4 Status indication
The two-coloured LED at the front of the speaker is used as status indicator of the device.
;LED green: indicates normal operation of the device
;LED red: indicates the operation of the overload protection circuit;
Output power limitation to protect the components from overloading

12
RL 940 / RL 940Cmusikelectronic geithain gmbh
Technical data
6 Technical data
General active 2-way-monitor for listening distances between 1.50 m (5 ft)
and 3 m (10 ft)
Maximum SPL
from 100Hz ... 6 kHz 110 dB ... 114 dB / r = 1 m
Bandwidth 38 Hz ... 20 kHz ± 3 dB
Calibration
Acoustic output level / PE= - 14dBu 89 dB / r = 1 m (3.3 ft)
Directivity index
from 100Hz ... 10 kHz increasing from 2dB auf 10dB
Inherent noise sound level ≤ 7 dB (A) / r = 1 m (3.3 ft)
Total harmonic distortion
measured at 96dB / r = 1 m
from 100Hz ... 10 kHz -≤ 40 dB
Nominal input level + 6 dBu adjustable
Input impedance ≥ 10 kΩ RC balanced
Nominal output power amplier
LF
HF
150 W @ 4 Ω
100 W @ 4 Ω
Electronic crossover frequency 1.8 kHz
Power requirements 230 V ~ ± 10 %, 50 Hz ... 60Hz
115 V ~ ± 10 %, 50 Hz ... 60Hz (optional)
100 V ~ ± 10 %, 50 Hz ... 60Hz (optional)
Power consumption 18 VA at standby; max. 180VA at full load
Operation and clipping indicator LED on front side
Input connector XLR 3F
Mains Connection IEC power connector
Loudspeaker systems
LF
HF
205 mm (8ʺ) cone
25 mm (1ʺ) dome
Dimensions (H x W x D)
RL 940
RL 940C
398 x 254 x 345 mm (15.6ʺ x 10.0ʺ x 13.6ʺ)
254 x 398 x 345 mm (10.0ʺ x 15.6ʺ x 13.6ʺ)
Weight 18 kg (39 lbs)
Temperature requirements
for use
for storage
relative humidity
+ 15°C ... + 35°C
- 25°C ... + 45°C
45 % ... 75 %
Gehäuseausführung
RL 940
RL 940C
MDF-wood in ash black veneered; dierent veneers or colours
optional
optionally without holding device available
with height-adjustable feet at the cabinet bottom

13
RL 940 / RL 940Cmusikelectronic geithain gmbh
Acoustic measurements
7 Acoustic measurements
All acoustic measurements are carried out under anechoic conditions with 1m (3.3 ft) distance.
20 50 100 200 500 1k 2k 5k 10k 20k
95
90
85
80
75
70
[dB]
[Hz]
0° 45°h
FREE FIELD FREQUENCY RESPONSE
1
0.5
0
[%]
K2 K3
[Hz]
80 100 200 500 1k 2k 5k 10k
TOTAL HARMONIC DISTORTIONS PA= 96 dB

14
RL 940 / RL 940Cmusikelectronic geithain gmbh
Accessories
8Accessories
8.1 Stand
;Speaker pivotally mounted
;Available heights: 1184 mm (46.6ʺ), 1414 mm (55.7ʺ), 1544 mm (60.8ʺ) and
1684 mm (66.3ʺ) (Top edge of the speaker)
;Bottom panel: 520 x 450 mm (20.5ʺ x 17.7ʺ)
;Bottom panel and stabilization board veneered
;Columns with black powder coating
8.2 Pedestal
;Integrated cable duct
;Height: ca. 1110 mm (43.7ʺ) (Top edge of the speaker)
;Bottom panel: 275 x 365 mm (108.3ʺ x 143.7ʺ) (B x D)
;Pedestal veneered
8.3 Wall mounting
;35° inclinable and 35° swivelling
;Wall mounting with black powder coating
8.4 Ceiling mounting
;Speaker pivotally-mounted
;Standard length between adapter and fork: 300 mm (118.1ʺ)
;Optional other lengths available
;Ceiling mounting with black powder coating

15
RL 940 / RL 940Cmusikelectronic geithain gmbh
Notes
9Notes

musikelectronic geithain gmbh
STUDIO MONITORING - HIGHEND LOUDSPEAKER - SOUND REINFORCEMENT
SYSTEMS SYSTEMS
Nikolaistraße 7
04643 Geithain / Germany
Tel: [phone]
Fax: [phone]
E-Mail: [email protected]
www.me-geithain.de