Akg PCC-170SWO Bruksanvisning

Akg mikrofon PCC-170SWO

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T
PHASEC O H E RE NT
CARDIOID
®
MICROPHONE
he A K G / C r o w n PCC170 (left) is a
surface-mounted supercardioid
microphone of professional quality. This
handsomely styled unit is appropriate
for use on the most elegant boardroom table or
lectern. Other applications include churches,
courtrooms and council chambers.
Because of its highly directional pickup pattern,
the PCC170 minimizes background noise and
feedback. The microphone reproduces the voice
with a clean, clear and natural sound.
Since the microphone capsule is placed on a
boundary or surface, direct and reflected sounds
arrive at the diaphragm in-phase. This coherent
addition of direct and reflected waves increases
sensitivity 6 dB and prevents phase cancella-
tions. The mic capsule is small enough to ensure
phase coherency up to the highest frequencies in
the audible spectrum, resulting in a wide, smooth
frequency response free of phase interference.
Clarity and reach are also enhanced.
Self-contained electronics eliminate the need for
an in-line preamp. Powered by 12-48V phantom
power, the PCC170 has a low-impedance mic-
level balanced output which permits long cable
runs without hum pickup or high-frequency loss.
The connector is a Switchcraft TB3M.
RFI suppression is included. Self-noise is low
and sensitivity is very high. A bass-tilt switch
allows the user to tailor the low-end response for
particular applications.
The PCC170 SW Version (right) has
additionally a silent-operating programmable
membrane switch that can be configured for
touch ON/OFF, momentary ON or
momentary OFF. The PCC170 SW O looks
identical to the PCC170 SW but features a
pair of extra leads in the mic cable to allow
isolated remote sensing of the microphone
switch closure.
How to Set the Bass Tilt Switch
On the bottom of the microphone is a BASS-TILT
switch with three positions: FLAT, CUT, and
BOOST. It adjusts the low-frequency response as
shown in Fig. 1.
The FLAT position provides a flat low-frequency
response, for normal usage. The PCC170 is
shipped from the factory in FLAT position.
The CUT position rolls off the bass, useful in
noisy or boomy surroundings.
The BOOST position boosts the bass for a more
natural sound when the mic is used on a small
surface such as a lectern.
How to Adjust the High-Frequency Response
The microphone is factory-set for flat response at
high frequencies. You can raise or lower the
high-frequency response for special applications.
Please follow this procedure:
1. On the bottom of the microphone, find the
hole labeled HF ADJ. This trim pot adjusts the
high-frequency response as shown in Fig. 1.
Specifications
Type: Phase Coherent Cardioid
®
.
Element: Electret condenser.
Frequency response (typical):
50 Hz to 20,000 Hz at 30 degrees incidence to
surface (see Fig. 1).
Polar pattern: Half-supercardioid (supercardioid in
the hemisphere above the primary boundary).
See Figs. 2 and 3.
Impedance: 150 ohms, balanced (recommended
load impedance 1000 ohms or greater).
Open circuit sensitivity (typical): 22 mV/Pa*
(33 dB re 1 volt/Pa).
Power sensitivity: 30.5 dB re 1 mW/Pa* .
EIA rating 125 dBm.
Equivalent noise level (self-noise): 22 dB SPL
typical (0 dB = .0002 dyne/cm
2
), A-weighted.
S/N ratio: 72 dB at 94 dB SPL..
Maximum SPL: 120 dB SPL produces 3% THD.
Polarity: Positive pressure on the diaphragm pro-
duces positive voltage on pin 2 with respect to
pin 3.
Operating voltage: Phantom power, 12 to 48 volts
DC on pins 2 and 3 with respect to pin 1.
Current drain: 4 mA nominal.
Connector: Switchcraft TB3M
Cable: 15-foot, black, two-conductor shielded
cable with Switchcraft TA3F and A3M connec-
tors.
Materials: High-impact molded plastic and steel
mesh grille.
Finish: black.
Net weight: 6 oz. (170 g).
Dimensions: See Figs. 4 and 7.
Optional accessories: A K G / Cro w n PH1A phantom
power supply (single channel, battery or AC
adapter powered), AKG / Crown PH4B phantom
power supply (4 channels, AC powered).
* 1 pascal = 10 dynes/cm
2
= 10 microbars = 94 dB SPL.
Fig. 1
Fig. 2
Fig. 3
Frequency Response
Frequency in Hz
Vertical-Plane Polar Response
Horizontal-Plane Polar Response
PCC170
PCC170 SW
PCC170 SW O
Fig. 4
PCC-
®
170
Fig. 5
Dimensions are to outside of plastic housing.
2. Using the supplied small screwdriver, turn the
pot clockwise for high-frequency boost (a
brighter sound); turn the pot counter-clockwise
for high-frequency rolloff (a duller sound).
Installation
Typical placement for each microphone is at
arms length from the user. Place one micro-
phone in front of each person or one between
every two people. The front of the microphone is
indicated by an arrow on the bottom of the base
plate.
If the microphone is used on a lectern, place it on
an open surface, not in a cavity. Otherwise the
frequency response and polar pattern will be
degraded.
Connect the far end of the mic cable to the input
of a phantom-power supply such as a AKG/ C r o w n
PH4B. Connect the output of the phantom power
supply to a mixer mic input.
Or, if your mixer has phantom power built in,
connect each mic cable directly to a mixer mic
input.
The PCC includes two keyhole slots in its base to
accept mounting screws. To screw the PCC to a
table top, follow this procedure:
1. Punch out the keyholes marked on the label
underneath the base plate (use a razor blade,
small screwdriver, etc.).
2. Using the template (Fig. 6), mark the location
of two holes in the table where you want to
mount the mic. These holes are 1.6 in. (4.06 cm)
apart, center-to-center. They are 2.2 in. (5.588
cm) from the rear of the mic. See Fig. 5.
Fig. 6
3. Screw two #8 woodscrews (0.270 in. [0.686
cm] dia. head) into the table at the locations you
marked.
4. Loosen the screws enough to receive the mic
and to hold it with a friction fit.
Architects and Engineers Specifications
The microphone shall be the AKG /C r o w n
Model PCC170).The microphone shall be a
half- supercardioid electret condenser type,
utilizing a subminiature transducer of rugged
construction.
The microphone shall employ the principle
of phase coherency achieved by mounting a
small-diameter element very near a
boundary, thus eliminating comb filtering in
the audible spectrum. The microphone will
exhibit excellent off-axis response and gain-
before-feedback.
A 15 ft (4.6 m), two-conductor shielded cable
with TA3F and A3M connectors shall be
supplied with the microphone.
Nominal sensitivity shall be 22 mV/Pa. Maximum
SPL shall be 120 dB SPL for 3% THD. Equivalent
noise shall be 22 dBA nominal. Frequency re-
sponse shall be 50 Hz to 20,000 Hz with a uni-
form off-axis response, over 20 dB down at the
rear nulls.
The AKG / C r o w n Model PCC170 is specified.
Warranty
AKG / C r o w n professional microphones products
are guaranteed unconditionally against
malfunction from any cause for a period of three
years from date of original purchase. See
enclosed warranty sheet for additional
information.
Service
If the microphone does not function properly,
check that it is aimed correctly and is configured
and connected as described in this data sheet.
Double check the DIP-switch settings. If there is
hum or no signal, first repair or replace the cable.
If you determine that the microphone product is
defective, return the complete
product in its original
packaging to one of the addresses below
. For
further assistance or technical support call
the
international helpdesk at
+43 676 83200 888.
.
PCC170 Schematic
AKG ACOUSTICS GMBH
LAXENBURGERSTRASSE 254
1230 VIENNA
AUSTRIA
AKG ACOUSTICS, U.S. SERVICE
24950 GROVE VIEW ROAD
MORENO VALLEY, CA 92551
U.S.A
© 2015 HARMAN International Industries,
Incorporated. All rights reserved. AKG is a
trademark of AKG Acoustics GmbH, registered in
the United States and/or other countries.
Features, specifications and appearance are
subject to change without notice.
www.akg.com
PCC170
PCC170 SW
PCC170 SW O


Produktspecifikationer

Varumärke: Akg
Kategori: mikrofon
Modell: PCC-170SWO

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