AKG B23 L User manual
B23 L
BEDIENUNGSANLEITUNG
.........................................
2
Bitte vor Inbetriebnahme des Gerätes lesen!
USER INSTRUCTIONS ............................................14
Please read the manual before using the equipment!
MODE D’EMPLOI ...................................................26
Veuillez lire cette notice avant d’utiliser le système!
ISTRUZIONI PER L’USO..........................................38
Prima di utilizzare l’apparecchio, leggere il manuale!
MODO DE EMPLEO ................................................50
¡Sirvase leer el manual antes de utilizar el equipo!
INSTRUÇÕES DE USO ............................................62
Favor leia este manual antes de usar o equipamento!
14 B23 L
Table of Contents
1Safety and the environment ..............................15
Environment ........................................................15
2Description ........................................................16
Introduction .........................................................16
Scope of supply ...................................................16
Optional accessories ............................................16
Short description..................................................16
Control elements..................................................17
3Setting up ..........................................................19
Insert the batteries and turn on the unit.................19
Connect microphones ..........................................20
4Application.........................................................21
MONO.................................................................21
STEREO...............................................................22
Adjusting audio level ............................................23
RECORDING.........................................................23
5Cleaning.............................................................24
6Technical data ...................................................25
Table of Contents
B23 L 15
Safety and the environment
Do not spill any liquids on the equipment.
The equipment must only be opened, serviced, and
repaired by authorised personnel. The equipment
contains no user-serviceable parts.
Please only clean the unit with a damp cloth, but not
one that is wet. Please do not by any means use harsh
or abrasive cleaning agents including any that contain
alcohol or solvent, as these could cause damage to
the paint and to the plastic parts.
Only use the equipment for the applications described
in this manual. AKG cannot accept any liability for
damages resulting from improper handling or misuse.
At the end of the lifetime of the product, disconnect
the housing, electronics and cable from each other
and discard all components according to applicable
disposal regulations.
The packaging is recyclable. Dispose of the packaging
via an appropriate collection system provided for this
purpose.
1Safety and the environment
Environment
16 B23 L
Description
Thank you for your decision to buy an AKG product. Please
read the user instructions carefully before using the unit
and keep them in a safe place so that you can refer to
them in the future at any time. We wish you a lot of fun and
success!
B23 L Battery Power Supply Unit
Transport band
Connection cable 3.5 mm jack – Mini XLR
Quick start guide
Please ensure that the packaging contains all of the parts
listed in the above. In the event that something is missing,
please contact your AKG dealer.
Optional accessories can be found in the current AKG
catalogue at www.akg.com. Your dealer will be happy to
advise you.
The B23 L Battery Power Supply Unit supplies "C... L" &
"C… ML"- versions of AKG MicroMic II Series microphones
with phantom power and enables operation of the
microphones with mixers, home recorders or the like
without integrated phantom power. The B23L output signal
can be used on your notebook or Tablet PC for the
purposes of further processing or recording. The battery
supply unit operates on two AA batteries.
2Description
Introduction
Scope of supply
Optional accessories
Short description
B23 L 17
Description
MONO STEREO
LINE LINE
MIC
MIC
IN L IN R
OUT
OI
1
2
3
4
6
8
7
9
10
11
5
Figure 1: B23 L control elements
1 Mini XLR inputs (2x): Two microphones can be
provided with supply voltage.
2 Output jack 3.5 mm is connected to a pocket
transmitter, mixer or recording device (notebook,
Tablet PC).
3 CLIP LED: This LED lights up if the audio level is too
high.
4 MIC/LINE selector switch: With this switch, the
output level is adjusted to match the input device.
5 VOLUME controls: Both input signals are mixed with
the VOLUME controls to balance audio level
differences, e.g., between voice and instrument.
6 MONO/STEREO selector switch for use of the unit in
MONO or STEREO operation mode.
7 ON/OFF switch: The unit has an ON/OFF switch for
operation. In the "Off" position, there is no drain on the
batteries.
NOTE
Please switch the unit off when not in use. In this way, the
lifespan of the batteries is prolonged.
Control elements
18 B23 L
Description
8 STATUS LED:
lights up for approx. one second when
switching the unit on: B23 L is ready for
operation.
does not light up: Check the batteries and
ensure that the polarity is correct.
lights up during operation: Change the
batteries.
9 Belt clip: To attach the unit to a belt. Place the unit
onto a belt or into a pocket in such a way that the
battery cover is facing the body.
10 Battery cover
11 Transport band
B23 L 19
Setting up
1) Pull off the belt clip (9) .
2) Pull the battery compartment cover (10) downward.
3) Insert two AA batteries into the battery compartment
and ensure that they have been inserted in the right
direction.
If the batteries have been inserted in the wrong
direction, the unit will not be supplied with power.
4) Switch on the unit using the ON/OFF switch (7).
If the status LED (8) lights up for approx.
one second immediately after switching on,
the batteries are in good condition and the
unit is ready for operation.
If the Status-LED does not light up, the
batteries are empty or inserted incorrectly.
Insert new batteries or insert the batteries
correctly. Ensure that the batteries are facing
the right direction!
If the Status LED lights up during operation,
the batteries are depleted. Exchange the
batteries with new ones as soon as possible.
5) Close the battery compartment by sliding the battery
cover over the battery compartment until it clicks into
place.
6) Insert the belt clip.
3Setting up
Insert the batteries and
turn on the unit
20 B23 L
Setting up
The unit has been designed for use with the
AKG MicroMic II "C... L" & "C… ML" Microphone Series.
If you would like to connect microphones from other
manufacturers to the unit, please note that you many have
to replace the connector plug of your microphone with a 3
pole mini XLR plug.
Contact assignment of the audio input plug:
Contact 1: Shielding
Contact 2: Audio in-phase (+)
Contact 3: Supply voltage
At contact 3, there is a positive voltage supply of 9 V (idle)
available for condenser microphones.
ATTENTION
Proper functioning of the B23 L
with products from other
manufacturers cannot be guaranteed. Potential damage due
to the operation using products from other manufacturers
shall be excluded from the guarantee.
Connect microphones
B23 L 21
Application
NOTE
Do not use pocket transmitte
r
s
in a range closer than
10 cm.
A typical example is the use of two microphones on an
accordion.
Figure 2: MONO operation mode with an accordion
1) Connect both microphones on the accordion to the
B23 L battery power supply unit.
Plug the mini XLR connector plug on the
cable of your microphone to an audio input
plug (1).
2) Connect the B23 L with a pocket transmitter over the
output jack (2).
3) Set the selector switch (4) of both inputs to "MIC".
4) Set the selector switch (6) to "MONO".
5) Switch on the B23 L using the ON/OFF switch (7).
4Application
MONO
22 B23 L
Application
6) Play the instrument.
7) Set the VOLUME control (5) of the inputs in such a
way that the CLIP LEDs (3) occasionally light up
shortly.
For stereo recording with two microphones or a
microphone and instrument, the B23 L battery power
supply unit is preconfigured to "STEREO":
1) connect two microphones or a microphone and an
instrument to the B23 L.
Plug the mini XLR plug on the cable of your
microphone to an audio input jack (1).
Insert the jack connector plug of the MKG L
guitar cable (optional accessories) into the
output jack of your instrument and the guitar
cable's mini XLR plug into the audio input
jack on the B23 L.
2) Connect the B23 L with a pocket transmitter, mixer or
recording device over the output jack (2).
3) Set the selector switch (4) of both inputs to "MIC".
4) Set the selector switch (6) to "STEREO".
5) Switch on the B23 L using the ON/OFF switch (7).
6) Sing into the microphone or play into the instrument.
7) Set the VOLUME control (5) of the inputs in such a
way that the CLIP LEDs (3) occasionally light up
shortly.
STEREO
B23 L 23
Application
NOTE
If the CLIP LED lights up frequently or continuously due to
loud singing or playing, the input sensitivity is too high. Turn
the VOLUME control down slightly, or change the selector
switch from MIC to LINE so that the CLIP LED occasionally
lights up shortly.
The B23 L output signal can be used on your notebook or
Tablet PC for purposes of further processing or recording.
Connect a notebook or a Tablet PC to the B23 L
battery power supply unit.
Insert a jack connector plug into the jack
output (2) and the two jack connector plugs
into the appropriate input jack of your
notebook or Tablet PC.
NOTE
Please only use cables shorter than 3 m in length.
Adjusting audio level
RECORDING
24 B23 L
Cleaning
Use a soft cloth moistened with water to clean the
surfaces.
5Cleaning
B23 L 25
Technical data
Power supply: Two AA alkaline or rechargeable batteries
Phantom voltage: 9 V (idle), 4 V (4.2
kOhm)
Power consumption:
40 mA @ 3 VDC
Lifespan of the batteries: 30 -
50 h depends on battery capacity
Input channels: Two mini XLR inputs
Max. input level: 0 dB
V
Input impedance: 5
k
Ohms
Max. input attenuation LINE: 50 dB +/-
1 dB (volume control position 0)
Min. input attenuation LINE: 0 dB +/-
1 dB (volume control position 10)
Max. input attenuation MIC: 37 dB +/-
2 dB (volume control position 0)
Max. MIC amplification: 30 dB +/-
2 dB (volume control position 10)
Output channel:
A
3.5 mm stereo output jack (max. 55 VDC)
Max. output level Stereo LINE:
0 dBV +/- 1 dB @ 1 KHz < 0.1 %
Stereo MIC (+ 30 dB):
0 dBV +/- 1 dB @ 1 KHz < 1 %
Output impedance: 200 ohms unbalanced
Gain LINE: 0 dB +/-
1 dB
Gain MIC: 30 dB +/-
2 dB
Noise LINE (Mono & Stereo): < 5 uV (A)
Noise MIC (Mono & Stereo): < 22 uV (A)
Frequency range: 20 Hz -
20 kHz
Temperature range:
-10
°C
–
60
°C (14
°F
–
140
°F)
Dimensions (W x D x H) 89 x 70 x 26 mm (3.5 x 2.75 x 1.02 in)
Weight including batteries: 115 g (4.05 oz)
This product conforms to the standards listed in the Declaration of Conformity. To view
a copy of the Declaration of Conformity for this product, visit http://www.akg.com or
contact sales@akg.com.
6Technical data
Table of contents
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