Akg PZM10 LL Bruksanvisning
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T
PZM 10 (LL)
he A K G / C r o w n PZM10 is a Pressure
Zone Microphone
®
designed for
security, surveillance, and conference-
table use.
PRESSUREZONE
MICROPHONE
Since it does not look like a microphone, it is
inconspicuous. The mic’s tubular housing
mounts in a 25/32" diameter hole in a ceiling
panel, wall or table.
Like other Pressure Zone Microphones, the
PZM10 uses a miniature mic capsule
mounted very near a sound-reflecting plate or
boundary, in the Pressure Zone. In this zone,
direct sound from the sound source combines
in phase at all frequencies with reflected
sound off the boundary. The benefits are
many: 6 dB more sensitivity, 6 dB less noise, a
wide smooth frequency response free of
phase interference, excellent clarity and
“reach,” and consistent pickup anywhere
around the mic.
In the PZM10, low frequencies below the
voice range are rolled off to reduce pickup of
air conditioning rumble. The high-frequency
response is boosted slightly to help articula-
tion. Because of its tailored response and PZM
construction, the PZM10 will pick up conver-
sations or other desired sounds with extra
clarity and definition.
The microphone connector is an XLR type
(3-pin pro audio) for easy plug-in installation.
The output is balanced, low impedance, which
allows long cable runs without hum pickup or
high-frequency loss. Powering is by 12 to
48 V phantom power.
The PZM10 LL has a line level output.
The mic’s humbucking transformer and steel
case prevent hum pickup, even near fluores-
cent lights.
Installation
To pick up speech at a small conference table
(about 6 feet square), mount one PZM10 in
the middle of the table. For longer tables, use
one PZM in the middle of every 4 to 6 people.
No person should be more than 3 feet from
the nearest microphone.
1. Please refer to Fig. 2 and identify the parts
shown.
2. Determine where you want to install the
microphone, and drill a 25/32" diameter hole
Specifications
Transducer type: Electret condenser.
Frequency response (typical): 80 Hz to 20,000
Hz. See Fig. 1.
Polar pattern: Hemispherical.
Impedance: 240 ohms, balanced. Recom-
mended minimum load impedance 1000
ohms.
Open circuit sensitivity:
2.5 mV/Pa* (–52 dB V/Pa).
Power sensitivity: –52 dBm/Pa*
Equivalent noise level (self-noise):
26 dB SPL typical (0 dB = 0.0002 dyne/cm
2
),
A-weighted.
S/N Ratio: 68 dB at 94 dB SPL.
Maximum SPL: 120 dB SPL produces 3% THD.
Operating voltage: 12 to 48 V phantom power,
positive voltage on pins 2 and 3 with respect
to pin 1.
Polarity: Positive pressure on the diaphragm
produces a positive voltage on pin 2 with
respect to pin 3 of output connector.
Current drain: 400 microamperes.
Output connectors:
PZM10: Ma le XLR type (3-pin pro audio).
PZM10 LL: Line level output,
unterminated cable.
Cable: None supplied. Use 2-conductor shielded
mic cable.
Materials: Steel plate and housing.
Finish: Off-white. May be painted any color; take
care to first seal the opening between the
capsule and boundary plate.
Net weight: 2.6 oz. (73.6 g).
Dimensions: See Fig.2.
Fig. 1
Fig. 2
Frequency Response
Frequency in Hz
there.
* 1 pascal = 10 dynes/cm
2
= 10 microbars = 94 dB SPL.
Produktspecifikationer
| Varumärke: | Akg |
| Kategori: | mikrofon |
| Modell: | PZM10 LL |
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