Classroom Audio Systems
‍Make the Best Choice

Classroom Audio Systems - Top Factors to Consider

Choosing an effective classroom sound system or audio system is crucial for delivering clear, consistent sound throughout the entire learning space. Key factors to consider include room size, number of students, and the types of audio sources, such as microphones and multimedia devices. Budget is also important, with performance options available across various price points. Additionally, ease of installation helps minimize classroom disruption and keeps costs down. A well-designed sound system boosts student engagement and enhances comprehension, ensuring every student can hear clearly and participate fully.

Speakers for Classroom Audio Systems

Wall speakers should not be quickly dismissed as an option. They are an excellent choice for classroom audio systems, offering superior audio quality and dispersion compared to most ceiling speakers. With wall-mounted speakers, the sound is often directed more effectively toward students (as illustrated below), improving clarity and enhancing cognitive continuity, ensuring students stay engaged while retaining more of the program material. Additionally, wall speakers typically provide better audio quality for the price, making them a cost-effective solution without compromising performance. While ceiling speakers have their place, wall speakers can deliver a richer sound experience tailored to classroom needs, ensuring that every lesson is heard loud and clear. Our SP-250T-W speakers are designed to be perfectly matched with all of our classroom amplifiers and are shown in the picture above.

See Our Classroom Speakers
SP-250W-T (Shown Below)

Audio Systems for Smaller Classrooms

When it comes to small classrooms or huddle rooms, having a high-quality classroom audio system is crucial for achieving maximum intelligibility. Complex audio systems may not be necessary in these smaller spaces and cost can often be a deciding factor. In such cases, a simple and cost-effective audio solution is ideal. Our PMA-245+ and PMA-245H+ amplifiers are specifically designed for these applications, delivering best-in-class audio fidelity when paired with the perfectly matched SP-250T-W speakers. Theses amplifiers feature two mixable channels of stereo audio (switchable to mono), over current and over temperature protection. They also combine a low purchase cost with a 5-year standard warranty, making them an excellent choice for huddle rooms and small classroomaudio systems where clarity and reliability are key.

PMA-245H+ (Shown Below)

Audio Systems for Medium Sized Classrooms

Medium sized classrooms are by far, the most common size of classrooms across most public school systems. Typically, they will accommodate between 15-40 students. When it comes to classroom audio systems for these environments, versatility and power are frequently high on the priority list. In addition, safety is a major factor. Having a priority override for the local sound system is a good idea, and having an amplifier with priority override and passthrough is an even better idea. Because the PMA-350H+ has these features and more (as listed below), it has become one of the most requested amplifiers in our line-up for medium sized classrooms.

PMA-350H+ (Shown Below)
Patented Auto HummBuster -
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The PMA-350H+ features Roemtech's exclusive Auto HummBuster technology (patent 9,042,577) for all three of it's audio inputs. When it comes to noise issues in classroom audio systems, the PMA-350H+ is unmatched in offering a solution to solve these issues. You won't find this feature on any other amplifier, only Roemtech offers this feature.
Classroom Safety -
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When designing a classroom audio system for local audio, sometime it's important, if not required to be able to mute the local audio system during an announcement or alert. The P/A SENSE feature in the PMA-350H+ allows for just that. Additionally, It can pass-through the audio from the P/A if desired by simply turning up the P/A volume level.
Remote Volume Control -

Some classroom audio systems need the control of an actual wall volume knob so that the amplifier can be adjusted as needed. The PMA-350H+ can be coupled with the WP-350H wall volume module. This module provides for a fourth audio input, easy access to the HummBuster feature, an instant mute button and smooth seemless audio level control.
Specifications -
Power: 50 watts @ 4 ohms
Frequency Response: 20 Hz - 20 kHz
Input 1: Stereo RCA - mixable
Input 2: Stereo 3.5mm - mixable
Input 3: Stereo 3.5mm - mixable
Speaker Outputs: Stereo or Mono Bridgeable
Power Supply: 24V @ 3 Amps - 72 watts
Operating Temperature: -40F - +190F
Weight: 1.35 lbs (amp only)
Amp Dimensions: 6.47"w x 4.25"d x 1.65"h
Warranty: 5 Year Standard
Green Sleep Mode
P/A Overide & Pass-Through
Optional External Volume Control
Auto HummBuster: 3 Inputs
Plenum Rated
Designed and Manufactured in the USA
Downloads -

PMA-350H+ Specification Sheet

PMA-350H+ Instruction Manual
PMA-350H+ Small But Powerful
Classroom Audio Amplifier, Roemtech's PMA-350H+, Plenum Rated Mixer and Amplifier with 3 inputs
Goto the "Contact Us" page for more information

Audio Systems for Larger Classrooms and Spaces

When it comes to larger classrooms, or areas like cafeterias, libraries, hallways, or lecture halls, a more powerful audio system is often required—one that can drive more than four speakers. In these cases, an audio system that outputs a 70V speaker signal is the superior choice. Roemtech has designed the "Q" series of 70V amplifiers specifically to meet the unique sound requirements of these larger spaces. For example, the Q100, a 100-Watt, 70V amplifier, can effectively power 16 speakers at 5 Watts each, all while maintaining a 20% headroom for optimal performance.

Q100 70V (Shown Below)
Surge Protected to 10,000 Volts -
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The Q Series of 70V amplifiers have built-in surge protection that protects the amplifier against voltage spikes up to 10,000 volts. This doesn't just apply to the power input. Each of the audio inputs are also protected against voltage spikes up to 10,000 volts. This high level of engineering makes the Q series nearly impervious to random voltage fluctuations.
Auto Limiter -

Many 70V amplifiers merely clip or shut down if an input signal exceeds the maximum allowable level. With the Q series of amplifiers, Roemtech has designed in proprietary auto limiting circuitry that instantly and seemlessly turns the incoming audio signal down so that the program material can still be heard without shutting down the amp or causing damage to speakers.
Short Circuit Protection -

When installing a 70V audio system, one of the most common issues is that one of the speakers may get set to an 8 Ohm setting. When this happens, the load on the 70V amplifier may become excessive or the speaker may also get damaged. With Roemtech's advanced overload protection circuitry, any overloading or short circuit scenario is easily handled.
Specifications -
Power: 100 watts (Q100), 55 wwatts (Q55)
Frequency Response: 60 Hz - 20 kHz
Input 1: Stereo RCA - mixable
Input 2: Stereo 3.5mm - mixable
HummBusters: 2 Inputs
Speaker Outputs: Mono 70V
Power Supply: 24V @ 4.5 A (Q100)
Power Supply: 24V @ 2.5A (Q55)
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Operating Temperature: -40F - +190F
Weight: .95 lbs (amp only)
Amp Dimensions: 5.85"w x 5.90"d x 1.4"h
Warranty: 5 Year Standard
Plenum Rated
Designed and Manufactured in the USA
Auto Limiter
Downloads -

Q100 Specification Sheet

Q55 Specification Sheet

Choosing the right classroom audio system can feel overwhelming, but it's essential for creating an effective learning environment. Key factors to consider include classroom size, number of students, connected devices, budget, P/A override capabilities, warranty coverage, system longevity, and customer support. These factors all contribute to improving student engagement and ensuring the system meets your specific needs. The classroom audio solutions we've outlined above represent some of the most reliable and widely-used options. Learn more about our classroom audio systems on our amplifiers page and our speakers page. If you have any questions or need detailed information, our friendly sales team is ready to assist you. Contact us via email or phone, and let us help you find the perfect solution for your classroom.