Instrukcja obsługi AKG CM311 L

AKG mikrofon CM311 L

Przeczytaj poniżej 📖 instrukcję obsługi w języku polskim dla AKG CM311 L (4 stron) w kategorii mikrofon. Ta instrukcja była pomocna dla 9 osób i została oceniona przez 2 użytkowników na średnio 4.5 gwiazdek

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D
CM311 A
CM311 AESH
CM311 L
esigned for touring and live-sound
applications, the AKG/Crown CM311
is a rugged head-worn microphone
with unequalled performance. It sounds like
the best handheld microphones - full,
clear, and distortion-free, even with the
loudest singers.
The CM311 is the latest version of the
AKG/Crown’s proprietary Dieroid ®
technology. Its cardioid pickup pattern
rejects sounds from the rear, such as oor
monitors. Its
noise-cancelling ability rejects
sounds at a
distance, such as instruments
on stage and
crowd noise. This results in
the CM311 having outstanding gain-before-
feedback and isolation.
Lightweight and comfortable, the mic’s
headband and boom adjust to t any singer.
An included pop lter greatly reduces
breath noise and pops. Because of the
boom’s unique behind-the-ear design, it
does not cover up the singer’s face.
Three models are available: CM311 A,
CM311
AESH and CM311 L. The CM311 A is
powered by a
9 V battery or phantom power.
It has a
battery belt pack with an on/o
switch, a
programmable mic on/o switch,
and a
“Mic On” LED. The CM311 AESH has
a T4AF connector, allowing you to connect with
Shure® wireless systems. The L version offers a
3-pin mini XLR output, which fits all AKG wireless
body-pack transmitters.
How to adjust for best t and to prevent
boom bounce
Note: To get the maximum performance out
of this microphone, take the time to adjust it
to t correctly.
For best results, the CM311 A MUST be
custom tted to a single user’s head. This
simple procedure takes only a few minutes.
Please refer to Fig. 5 and locate the parts
described.
1. If the microphone is for yourself, we
suggest that you use a mirror to double
check the t as you make adjustments.
2. Loosen (just a little) the thumbscrew
located on the outside of the foam block,
part way back on the boom. This allows the
boom to slide in and out, and to rotate left
and right.
DIFFEROID
®
HEAD-WORN
CONDENSER MICROPHONE
Specications
Transducer type:
Electret condenser.
Frequency response (typical):
50 Hz to 17,000
Hz
(see Fig. 1).
Polar pattern:
Cardioid (see Fig. 2).
Impedance:
CM311 A, 75 ohms balanced. CM311
AESH and CM311 L, 6 kilohms unbalanced.
Recommended load impedance:
CM311 A,
1000 ohms or greater. CM311 AESH and
CM311 L, 10
kilohms.
Open-circuit sensitivity, typical, close-talking:
CM311 A, 4 mV/Pa* (–48 dB re
1V/Pa),
CM311 AESH and CM311 L, 1.25 mV/Pa
(–58 dB re 1V/Pa).
Power sensitivity, typical, close-talking:
CM311 A: – 42.5 dB re 1 mW/Pa*, CM311
AESH and CM311 L:
–71.5 dB re 1 mW/Pa.
Equivalent noise level (self noise):
26 dB
SPL typical (0 dB = 0.0002 dyne/cm2),
A-weighted.
S/N ratio:
68 dB at 94 dB SPL.
Maximum SPL:
CM311 A, 148 dB SPL produces
3% THD. CM311 AESH and CM311 L, 140 dB
SPL with 3V DC, 148 dB SPL with 9V DC.
Operating voltage:
CM311 A, 9 V DC internal
alkaline battery or 18-48 V phantom power.
CM311 AESH and CM311 L, 3-9 V DC from
the transmitter’s
battery.
Polarity:
Positive pressure on diaphragm
produces positive voltage on CM311 A XLR
pin 2 with respect to pin 3, and on CM
311
AESH and CM311 L shield with respect to
white lead.
Current drain:
CM311 A, 6.5 mA nominal.
CM311 AESH and CM311 L, 0.27 mA
nominal.
Battery life:
CM311 A, 85 hours. CM311 AESH
and CM311 L,
approximately equal to
transmitter battery
life.
O
-
Out
(
w
Mat
b
im
Fini
Ne
t
C
Dim
d
7
S
Incl
c
Opt
s
p
A
w
*1
pa
attenuation:
70 dB.
tpu
t connectors:
CM311 A, 3-pin pro audio
XL
R type). CM311 AESH, TA4F for Shure®
wireless systems
. CM311 L, 3-pin mini XLR.
terials
:
High-impact plastic mic housing,
bras
s boom, steel wire headband, high-
mpac
t plastic and steel battery pack.
sh
:
Satin black.
weight:
Head-worn mic, 2.1 oz (61 g).
CM311
A belt pack and battery, 6.1 oz (173g).
mensions
:
Headband 5.5-inch (13.97 cm)
diamete
r, adjustable. Boom approximately
7
-inch (17.78 cm) x 3-inch (7.62 cm).
See
Figs. 3 and 4.
ude
d accessories:
Microphone carrying
ase
, WS-6 foam pop lter, clothing clip.
iona
l accessories:
PH-4B phantom power
uppl
y (4 channels, AC powered). PH-1A
phanto
m power supply (1 channel, battery
or
AC
-adapter powered). WS-14 accessory
windscreen.
asca
l = 10 dynes/cm
2
= 10 microbars = 94 dB SPL.
Fig. 1
Frequency Response
+15
+10
+5
dB 0
-5
-10
-15
-20
-25
-30
-35
0˚, 1.375"
0˚ 2'
120˚, 2'
20 100 1K
Frequency in Hz
Fig. 3
MIC
Fig. 2
Polar
Re
300˚
270˚
240˚
330˚
0˚
FRON
-
0
-
5
-
1
-
1
-
2
10K
20K
210˚
REAR
180
Fig. 4
sponse
30˚
T
0
5
10
15
20
60˚
90˚
120˚
R
˚
150˚
1000 Hz
300 Hz
6000 Hz
Fig. 5
3. Now bend the headband wire to t your
head. Put the foam-block wire behind your
ear. Then you can bend the earpieces to t
snugly around your ears. The back of the
headband should t rmly against the back
of your neck.
4. Next, adjust the foam pad snug against
your head or neck. To do this, bend the wire
that goes into the foam block. CAUTION! Do
not bend the boom itself — just the foam-
block wire. A snug fit of the foam pad pre-
vents boom bounce when you move around.
5. Be sure that the thumbscrew is still loos-
ened a little. Move the boom in or out, and
left or right, to center the mic directly in
front of your lips.
The foam pop filter
should press firmly against the lips.
This
is necessary because the mic cancels
sounds that are not close to it. Also, it keeps
the boom from bouncing. Tighten the
thumbscrew and you’re done.
Once you’ve adjusted the headset, it should
remain in that position - no further adjust-
ments are needed. You can still swing the
mic up or down, away from your lips, if you
don’t want to be heard on the P.A. — or use
the mic on/o switch programmed for
“press o” operation.
After several hours of use, the foam pop
lter can become clogged with moisture,
giving a muled sound. Periodically wash it
in mild detergent and water. The foam pop
lter is held in place by a removable ring.
Additional WS-6 pop lters can be ordered
from AKG’s Parts Department.
How to insert a battery in the CM311 A
belt pack
1. Access the battery by sliding open the
battery cover.
2. Insert a fresh 9V alkaline battery (Mallory
Duracell MN9100 or equivalent) into the
battery tray. The battery cover shows the
correct polarity.
3. Replace the battery cover. To prolong
battery life, turn othe battery switch when
not in use.
If you’re using phantom power, and the
battery switch is on, the battery will take
over automatically if phantom power fails.
After 85 hours of use, or if the sound is
distorted, it’s time to replace the battery.
How to program the mic on/o switch
The mic on/o switch can be programmed to
work in three ways:
*
Push-on/push-o.
*
Momentary on.
*
Momentary o (as supplied).
To change the switch operation, open the belt-
pack case by removing the three screws. Set
the switch as shown below:
The LED lights when the mic is on.
Architects’ and Engineers’ Specications
The microphone shall be the AKG/Crown
Model CM311 A or equivalent. The
microphone shall be a head-worn, noise-
cancelling,
car
Th
e
axi
s
Th
e
hea
thu
Mo
pac
per
shie
pho
incl
nec
Mo
bat
pha
bat
on/
No
or
1
148
sha
res
a
u
dow
mo
Mic
AK
gua
ma
thre
Se
e
info
Se
r
If
t
erl
y
con
you
defe
orig
belo
sup
+43
rdioi
d type of electret-condenser design.
e
microphone shall exhibit excellent o-
s
response and gain-before-feedback.
e
microphone shall have an adjustable
adband
, adjustable boom with locking
mbscre
w, and foam pop lter.
de
l CM311 A shall include a battery belt
ck
. In the CM311 A, a
42-inch,
rmanentl
y attached, two-conductor
elde
d cable shall connect the micro-
on
e to the belt pack. The belt pack shall
lud
e a 3-pin pro audio (XLR type) con-
cto
r.
de
l CM311 A shall be powered by a 9 V
te
ry in the belt pack, or by 18 to 48 V
anto
m power. The belt pack shall have a
te
ry on/off switch, a programmable mic
o
switch, and a “Mic On” LED.
mina
l open-circuit sensitivity shall be 4
1.2
5 mV/Pa. Maximum SPL shall be
8
dB SPL for 3% THD. Equivalent noise
all
be 27 dBA nominal. Frequency
ponse
shall be 50 Hz to 17,000 Hz with
uniform
o-axis response, over 20 dB
w
n at the
rear null. The AKG/Crown
del
CM311 A is specied.
c
rophone Warranty
G/C
rown professional microphones are
a
ranteed unconditionally against
lfunction
from any cause for a period of
e
e years
from date of original purchase.
e
enclosed warranty sheet for additional
o
rmation.
r
vice
h
e microphone does not function prop-
y
, check that it is aimed correctly and is
nnecte
d as described in this data sheet.
If
u
determine that the microphone product is
ective, return the complete product in its
ginal packaging to one of the addresses
ow
. For further assistance or technical
pport call
the international helpdesk at
3 676 83200 888.

Specyfikacje produktu

Marka: AKG
Kategoria: mikrofon
Model: CM311 L

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