7% Goods Service Tax (GST) will be imposed over the total invoice value if purchased locally in Singapore. However if you are a tourist visiting Singapore, this GST amount can be
refunded at the Changi International Airport Departure Hall / Seletar Airport Passenger Terminal / Marina Bay Cruise Centre Singapore/ International Passenger Terminal at Harbourfront Centre
GST Refund Centre before departure with goods within 30 Days from the date of purchase. Please note that only Tourists who have met the Tourist Refund Scheme's conditions and eligibility criteria can
claim for the GST refund. Please visit: https://www.iras.gov.sg/IRASHome/GST/Consumers/Tourist-Refund-Scheme/
for GST Guide for Visitors on Tourist Refund Scheme. |
Azden IR-CSV Infrared Classroom System -Ceiling Mount Speakers and Remote Volume Control |
Product Code: IRCSV
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| Overview: |
CLASSROOM PROVEN
For the past decade, probably no company has had more of their wireless microphone systems installed in classrooms across the
country than Azden. Working with the engineering departments of the leading classroom amplification names, Azden has been at the forefront of the drive to improve the quality and reliability of
sound available in class-rooms. Azden has been selected by these companies because of our long experience in producing reliable RF and infrared products, not for the "stage" but for everyday
applications, especially classrooms and conference rooms. Now, in addition to our continued partnerships, Azden is proud to introduce its own lineup of products, engineered specifically for the
classroom.
THE ADVANTAGES OF INFRARED
Infrared wireless microphone systems are the best solution for classrooms. In today's RF saturated world a regular (VHF or UHF)
microphone system risks interference from a variety of other devices and sources. Cell phones, radios, TV, PA systems, police and emergency service systems, etc., can all interfere with VHF and
UHF, but not with IR. Furthermore, infrared is perfect for classroom audio, since, unlike the other systems, IR is short-range, cannot penetrate walls, and is line-of-sight. This
means that a school can have as many classrooms as desired with individual audio systems, without fear of interference. Since the Azden system is dual-channel, the teacher can have one micro-phone
and a second person can also have a microphone. In addition, since each class-room system is on the same pair of channels, teachers
can go from room to room with-out having to switch microphones.
THE COMPLETE CLASSROOM SYSTEM
The IR-CSV is a complete system and includes the (IRR-40P) receiver
that supplies ample power for 4 ceiling speakers, a small, lightweight chest-worn microphone/transmitter with volume adjust (IRN-20), a mini lightweight pass-around handheld
microphone/transmitter (IRN-30), an external ceiling-mounted sensor (IRD-66), and 4 high-quality in-ceiling speakers (ACS 6.5). All you need to complete the installation is the wiring for the speakers and sensor.
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| Components of IR-CSV System |
IRR-40P Powered 2-channel IR Receiver
The New Azden infrared IRR-40P powered, dual-channel receiver allows you to use 2 wireless microphones simultaneously, and you
can also adjust system volume right from the IRN-20 pendant style transmitter. 2 wireless microphones can be used for, "team-teaching, or with the mini handheld microphone (IRN-30) for
student pass-around. The receiver also has 2 stereo auxiliary inputs so that other line-level devices (CD players, MP3 players, VCRs, etc.) can be attached and played through the system. The
teacher can also send the audio to a recorder or video camera, using the line-level output jack. For bigger rooms or odd-shaped rooms up to 3 external sensors can be attached. With all 4 of the
ceiling speakers attached to the IRR-40P, sound is spread equally throughout the room, allowing all students to hear equally.
IRN-20 Neck-worn IR Transmitter with Volume Control
A lightweight, chest worn, microphone/transmitter, the IRN-20 comes
with an adjustable lanyard. It is both a microphone and infrared transmitter that wirelessly "links" the teacher to the IRR-40P/IRR-30/IRR-30P receiver. When used with the IRR-40P you can
adjust system volume right from the IRN-20 itself for ultimate flexibility. The IRN-20 also has a specially designed internal microphone array that provides great sound pick-up. With just one
"AA" battery (Alkaline or rechargeable 1HR-3U only) the microphone can be used the entire school day without re-charging or changing
batteries.
IRN-30 Mini Handheld IR Microphone/Transmitter
A lightweight, handheld microphone/transmitter, the sleek IRN-30 is both a microphone and infrared transmitter that wirelessly "links"
the teacher to the IRR-40P/IRR-30/IRR-30P receiver. The IRN-30 microphone provides great sound pick-up. With just one "AA" battery (Alkaline or rechargeable 1HR-3U only) the microphone can be used
the entire school day without re-charging or changing batteries.
IRD-66 Sensor
In most classroom situations, a single well-positioned IRD-66 external IR sensor provides complete classroom coverage. Mounting
is easy, and the sensor is connected to the IRR-30P receiver with standard coaxial wire.
ACS-6.5 In-Ceiling Speaker
The ceiling speaker was designed to provide optimum performance for
the teacher's voice in addition to audio from other sources (CD/MP3 player, VCR, etc.). Each speaker features a sealed-back enclosure and 6 ½" polypropylene midrange/woofer to produce natural bass
response, while the coaxial mounted 1" polycarbonate tweeter provides superior high frequency response. Easily flush-mounted in any drop ceiling, four of these speakers provide smooth, evenly
distributed sound throughout the classroom. Designed to handle up to 50 Watts (continuous program) each. All students can enjoy enhanced audio equally.
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| Specifications of IR-CSV: |
IRR-40P Receiver:
Sub-carrier frequencies: 2.06MHz & 2.56MHz
Type: Super heterodyne - crystal controlled
Modulation: FM
Signal-to-Noise: >75dB A weighted
Reception sensitivity: >25dBµV
Line Input impedance: 32k ohms ±15%
Line Output adjustment: - infinity to +10dBu
Audio Output: 5W x 4 @ 4 ohms
Power requirement: 15V DC @ 2.7A (use model BC-30)
Size: 8.03" W x 9.19" D x 1.73" H (204 x 233 x 44mm)
Weight: 3.33lb (1.5kg)
IRN-20:
Sub-carrier frequencies: 2.06MHz
Modulation:FM
Microphone element type: Uni-directional electret x 2
Frequency response: 50-9kHz ±3dB
Ext Mic input imped.: 2.2k Ω
Ext Mic input jack: 3.5mm
Ext. Mic Voltage/Current: 3.5VDC @ 1mA
Mic gain adjustment: +6dB to approx. -10dB
Battery type: 1-"AA" Alkaline (1.5V) or 1-1HR-3U "AA" rechargeable
Ni-MH (1.2V)
Battery life: > 8hours w/alkaline batteries
Size: 95 x 25 x 50mm
Weight: 74g inc./battery
IRN-30:
Sub-carrier frequencies: 2.53MHz
Modulation: FM
Microphone element type: Uni-directional electret x 1
Frequency response: 50-9kHz ±3dB
Ext Mic input imped.: 2.2k Ω
Ext Mic input jack: 3.5mm
Ext. Mic Voltage/Current: 3.5VDC @ 1mA
Mic gain adjustment: +6dB to approx. -10dB
Battery type: 1-"AA" Alkaline (1.5V) or 1-1HR-3U "AA" rechargeable
Ni-MH (1.2V)
Battery life: > 8hours w/alkaline batteries
Size: 27 x 27 x 90mm
Weight: 74g inc./battery
IRD-66:
Dome sensor
Output: F Connector
Power: powered by receiver (24V @ 15mA)
Cable requirement: RG59 - 75 ohm coaxial
Size: 3.94" x 1.18" (100x30mm)
Weight: 6.00oz (170g) w/mounting bracket
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| Classroom Wireless Audio system consists of following components: |
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| IRR-40P |
IRN-20 |
IRN-30 |
IRD-66 |
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| 2-Channel IR Receiver with Remote Control |
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| Neck-Worn IR Transmitter with Volume Control |
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| Mini Handheld IR Mic / Transmitter |
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