1. Compare PentaClass models
PentaClass specifications
A AB ABMPENTACLASS MODEL
Ceiling, wall and table mount Kit
Remote control
Compatible via AUX with tablets, smartphones, laptops
Compatible via AUX with MP3 player, DVD, Blueray
Compatible via Bluetooth with tablets, smartphones, laptops
Built in Bluetooth
Teachers / presenters microphone
ACOUSTICS
Omni-directional acoustics
High quality plywood chassis
Designed for enjoying sound with good acoustics
3 Pre-equalized modes for superior speech intelligibility,
music and high bass
Proven electronics provide up to 120 m2 of soundfield coverage
50 watts of classroom-wide sound enhancement
POWER / REQUIREMENTS
Switch mode, low noise, high efficiency
Wide input voltage range in input: 100-240 V, 50/60 Hz
Voltage output: 18 VDC / max 40W
Protected against short-circuit, overload and over-voltage
Voltage tolerance +/- 3%
90% efficiant
Ripple and noise less than 1%
With earth pin
Fully enclosed plastic case
Approvals: UL / CUL / TUV / BSMI / CCC / CB / FCC / CE
Class power ( with earth pin)
Pass LPS
LED indicator for power on
No load power consumption<0.3W
Meet EISA 2007(Energy Independence and Security Act)
3 pole AC inlet IEC320-C14
OTHER PRODUCT FEATURES
Modular electronic system, possible to configure
Possibility of mixing 3 input signals into one common in output
Auto Power off energy saving mode
Multifunctional buttons, easy to operate
Echo cancellation feature
AGC automatic gain control
Simple below the ceiling installation with bracket
Classroom audio system that
creates harmony between people
and technologies
hear. understand.
E-mail: info@certesindustry.com
www.pentaclass.com
Certes Industry SIA
Mukusalas street 41b, Riga, LV-1004, Latvia
Width max – 24 cm, height – 24 cm
2 kg
SPEAKER DATA
Frequency Response
Loudness
Port Tuning
Power
SIGNAL CONNECTIONS
Input AUX jack, 3.5 mm, mono-stereo input with auto detection
and mix down
Extras: Modular two BT channels or one BT and one
RF 2,4 GHz channels
INPUT IMPEDANCE
66k ohms
Input voltage +/- 1,6 V
AMPLIFIER
Digital amplifier 50 W BTL (Bridge Tied Load)
Excellent dynamic range from 20 Hz to 20 kHz.
Gain 24 dB
Overcurrent (OC) Protection With Current Limiting
Overtemperature Protection
Undervoltage Protection (UVP) and Power-On Reset (POR)
BLUETOOTH DATA
Bluetooth technology 4,0 with low latency <50 ms
Working distance up to 15m
HFP BT profile together with Wideband Speech (WBS)
MECHANICAL
System Dimensions
System Weight
Transmission range 80 Hz - 20000 Hz
Mean sound pressure level 86 dB
Resonance frequency 90 Hz
Rated power handling 30 W
Music power handling 50 W
Impedance 8 Ω

2. AUDIO PRESETS
Allows you to choose the audio mode
- a speech, music or a movie.
ANALOGUE AUDIO INPUT
To connect your PentaClass audio
system with other devices.
REMOTE CONTROL
This turns PentaClass on or off and allows you to
choose the audio mode – a speech, a piece of music
or a movie (only on Penta Class A and AB versions).
MULTIFUNCTIONAL MICROPHONE
The microphone can also be used as a
remote control – to turn the audio system
on or off, or to change the audio mode
(only on PentaClass ABM version).
SECURE BLUETOOTH CONNECTION
The connection between devices is secure, so
students will not be able to connect their tablets,
smartphones or other devices to the
PentaClass audio system.
POWER SAVING MODE
The automatic power saving mode
switches on if there is no incoming
signal for more than 20 minutes.
360° OMNIDIRECTIONAL SOUNDFIELD
Thanks to the high-quality audio system, all students in the
classroom will be able to hear and follow the teacher,
no matter where they are sitting.
SIMPLE INSTALLATION
Install PentaClass A on the ceiling or
wall or simply place it on the table.
DESIGN – A PEARL-WHITE BODY
Made of plywood, aluminium and plastic. Ensures
outstanding durability - makes this system not just
sound great but also look attractive in any environment.
MUSIC PLAYBACK
Offers rich bass and sound clarity,
which is ideal for listening to music.
BLUETOOTH CHANNEL
Enables both wireless and wired
connections to an audio source.
Power of harmony
360 degree classroom audio system.
Why PentaClass classroom audio system?
Improves the teachers’ health by reducing the vocal load. Studies have proved that teachers suffer from
voice disorders 32 times more than other people. It helps students not only to hear better, but also to
understand better, regardless of whether they are sitting at the front or the back of the classroom. To not
just hear, but also understand, information children must hear information at least 15dB louder then the
background noise in the classroom, so with Pentaclass we can achieve this by tuning the volume.
The Classroom Audio System is a
long-term investment in your children’s quality education.
PentaClass is specially designed to distribute the sound evenly throughout the classroom. With 50W
speakers you will be able to get enough volume for huge auditoriums up to 100 m2
.
hear. understand.
Children
Hear, understand
and learn
Teachers
Improved working
conditions and health
Society
Education is the
key to success
Design
Innovative and
functional
Technology
At it’s
best
With its unique design, technology and the smallest microphone on the education market, PentaClass
delivers unparalleled acoustic performance to improve the teaching and learning process at schools,
universities, and other educational institutions.
Children
improve their
results by
about 30%.
Improved
teacher speech
recognition
and health.
Children
spend 75% of
their day
listening.