Connect
Classroom Amplification/Audio Management
System
SYSTEM SPECIFICATIONS: Rev 1.04
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PART 1.
1.1
GENERAL
SUMMARY
A. The Connect Amplification system shall include all components
to properly amplify voice and other audio sources such as
Media PC’s, Projector/TV Audio, Ipods, and any other audio
source input. Wall or ceiling mounted speakers, infrared
sensor, microphone/transmitter(s), chargers for microphones,
and power shall all be included as part of each Class Connect
system.
B. Benefits can include but not limited to:
1. Test scores by an average of 7-10%
2. Improve student attention
3. Significant reduction in behavioral problems
4. Over 30% improvement in word recognition in all
students
5. Reduces teacher stress & throat illness reducing
absenteeism
1.2
APPLICATION
A. Connect amplification system should be installed in all
classrooms within a school that require uniform distributed
sound from all audio devices within that learning environment.
B. Multiple speaker options shall include 8” ceiling speakers with
bridge and back box, 2x2 lay in ceiling speakers, and/or wall
speakers. All speakers shall include the hardware for proper
mounting.
C. Connect’s audio management device shall be fully interfaced to
the existing or new intercom/paging system. The output of the
intercom system shall directly interface to the Connect
amplification system in the classroom. This integration shall
give positive control when interfaced to the Class Connection
Intercom System within the system as to cut off or duck all
sources within the classroom when an intercom or page
announcement is made from anywhere within the school. Any
systems that do not directly interface with the existing or new
intercom/paging system shall not be acceptable.
D. The intercom/paging system speakers have the option of being
part of the speakers utilized for the in room Connect
amplification system. They may be connected to receive audio
from any of the in room sources or only receive audio from the
intercom/paging system.
E. The Connect Amplification System shall be either in wall or shelf
mounted anywhere within the classroom. The décor shall be of
high quality with easy front or back connections to any audio
source.
F. The infrared sensor shall be capable of being mounted directly
to the speaker, thus utilizing CAT 5 wire for installation instead
of COAX cable for this device. If another infrared sensor is
required in the room, then that sensor shall utilize COAX cable
for connectivity.
G. Only two (2) speakers are necessary for most classrooms with
average classroom sound levels and of average size. Four (4)
speakers may be utilized if the room is above ambient average
classroom noise levels or larger in size.
1.3
DESCRIPTION
A. The Connect Amplification System shall include but not limited
to the following components.
1. Connect infrared receiver/amplifier/controller with two
external recharging cradles.
2. Four (4) Audio Inputs
3. Two (2) Mic Inputs
4. Two (2) volume controls (one for each mic)
5. Four (4) audio volume controls (one for each input)
6. Valcom LightMic microphone with rechargeable NiMH
batteries
7. Optional IR Handheld microphone with rechargeable
NiMH batteries for student pass-around use.
8. Built-In IR sensor on one of the speakers.
9. Two (2) or Four (4) 8” ceiling, 2x2 lay in, or wall speakers
with mounting hardware.
1.4
QUALITY
A. Installer shall have experience in performing work of this section
that has specialized in work of similar nature such as audio
equipment.
B. Acceptable Manufactures
1. Basis of Design: Class Connection by Valcom, 5614
Hollins Road, Roanoke, VA 24019.
2. Substitutions must be fully compliant with all
specifications as written.
3. Manufacture Testing: All units shall be fully tested by the
manufacturer before shipping.
1.5
SUBMITTALS
A. Manufactures data on all products including:
1. Catalog Cut Sheets
2. Installation Manual
3. Typical wiring drawings
4. Manufacture warranty document
5. Product Serial Numbers
6. Parts List
1.6
WARRANTY
A. All of the major components shall be warranted for a period of
one (1) year including Connect audio management amplifier,
Microphones, Chargers, Sensors, and Speakers.
1.7
OWNER TRAINING
A. The contractor who installs and/or sells the system shall perform
user training.
1.8
PERFORMANCE
A. The Classroom Amplification shall have two (2) microphone
inputs.
Each microphone input shall have a carrier detect indicator to
verify that the input is active. Each input shall also have a
volume level adjustment.
B. The Classroom Amplification System shall have three (3)
auxiliary inputs.
Each input shall have a volume level
adjustment.
C. The microphone inputs shall have programmable priorities to
select
either ducking of the auxiliary inputs or cut them off when the
microphones are active.
D. The Classroom Amplification System shall connect to the
Intercom/paging system. This integration shall allow the use of
the Intercom/Paging speaker as an integral part of the
Classroom Amplification System. Systems that don’t integrate
with the Intercom/Paging system shall not be acceptable.
E. The microphone inputs shall have class of service programming
as to allow ducking or cut off when an all call or emergency
page is detected from the Intercom/Paging system.
F. The microphone inputs shall have a class of service
programming as to allow ducking or cut off when an intercom
page is detected from the Intercom/Paging system. The system
shall also have dual connections for the paging system
speakers as to allow one or both Classroom Amplification
speakers to engage during an intercom page.
G. The Classroom Amplification System shall have a low level
output to connect to Valcom self amplified speakers or other
audio equipment if needed. This output shall have a volume
control.
H. The Classroom Amplification System shall have an amplified
output to connect to Valcom forty-five (45) ohm speakers. This
output shall have a volume control.
I. Classroom Amplification System shall include two wireless
microphones with chargers and an IR sensor.
J. The Classroom Amplification System shall either be shelf or inwall mounted.
K. The Connect system shall have an emergency cut-off input that
when interfaced to the fire alarm relay contact output shall turn
SILENCE all audio devices within the room in the event of a fire
as to help lower the overall decibels levels to help the students
and staff hear the audible fire alarm tones/instructions within
that room.
L. The master output volume control shall control all four (4) audio
input sources. Each audio input shall also have a separate
input level volume control as to adjust the gain for each
independent audio source. The master volume control shall not
effect the microphone level output.
M. System must have built-in automatic, self adjusting DSP
feedback rejection enhancement.
1.9
PENDANT-STYLE IR MICROPHONE / TRANSMITTER
A. The pendant-style mic transmitter shall be capable of being
worn around the teacher’s neck as a hands-free microphone via
the lavaliere cord or to be used as a handheld student passaround microphone. The mic must be rechargeable via the
charging cradle or cable.
B. Standard sub-carrier frequencies: 2.06/2.54 MHz. Alternative
sub-carrier frequencies: 3.2/3.7 MHz
C. Audio distortion: <1%
D. Integrated microphone type: uni-directional electret
E. Input jack for optional external microphone: 3.5mm
F. Microphone input impedance: 2.2k Ω
G. Battery Charger input: 3.5mm DC jack
H. Cradle Charger: 3.5mm DC jack inputs; charges up to two VIRM5
I. Battery Power: 2 AA NiMH Rechargeable Batteries
J. Dimensions: 1.375” (w) x 4.625” (l) x 1” (d)
K. Weight (with batteries): 3.7 oz.
1.10
EXTERNAL IR SENSOR
A. Power: from receiver/amplifier
B. Reception coverage: 360 degrees
C. Cable: 50 Ω plenum-rated Coax (50 feet) with F-type connectors
D. Mounting: ceiling or wall mount (bracket included)
E. Diodes: 32
1.11
CONNECT AUDIO MANAGEMENT/AMPLIFIER SPECIFICATION
A.
B.
C.
D.
E.
F.
G.
H.
I.
J.
K.
Power Output: 75dB@1 meter nominal
Frequency Response: 50Hz to 15Khz
Power Supply: 24VDc/500mA
Signal-to-noise:>73dB
Image and spurious Rejection: >70dB
Total Harmonic Distortion: <1%@ 4 watts
Speaker Load Impedance: 100 Ohms
Standard sub-carrier frequencies: 2.06MHz/2.54Mhz
Receiver sensitivity: 6uV for 60dB s/n
Reception selectivity: +/- 40 kHz
Dimensions (WxDxH): 5” x 2” x 3”
1. Controls and indicators
2. (2) IR microphone volume controls with ACTIVE LED
indicator
3. (4) Auxiliary audio input volume controls
4. (1) Master output volume control
5. Bass and Treble controls
6. Power on LED
L. Connections:
1. (All connections use 4pr CAT5 twisted)
2. Speaker outputs (Line out and Amplified) Screw
Terminals
3. Power input: Screw Terminals
4. (4) Auxiliary Inputs: 1/8 Phono Jacks / Screw Terminals
5. Intercom Input: Screw Terminals
6. IR sensor input Screw Terminals
1.12
SPEAKERS
A. 2x2 Lay in Speaker
1. Cone Diameter: 8”
2. Voice coil impedance: 45 Ohms
3. Power Handling: 12 Watts
4. Frequency response: 80Hz to 15Khz
5. Steel Housing with a white baked on acrylic enamel finish
B. Wall Speaker
1. Cone Diameter: 8”
2. Voice coil impedance: 45 Ohms
3. Power Handling: 12 Watts
4. Frequency response: 80Hz to 15 KHz
5. Gray Metal enamel fish with Black cloth grill
C. Corner Speakers
1. Cone Diameter: 8”
2. Voice coil impedance: 45 Ohms
3.
4.
5.
6.
Power Handling: 12 Watts
Frequency response: 80Hz to 15Khz
Gray Metal enamel fish with Black cloth grill
90 degree dispersion angle