Bosch LA1-UW24 LA1-UW36 Column Loudspeakers are the professional solution for acoustically challenging spaces. Designed to combat echo and reverberation in large, “hard” environments like places of worship, high-ceiling lobbies, and auditoriums, these wooden column speakers focus sound exactly where it’s needed: on the audience.
At ChoiceCycle, we utilize the LA1 series (LA1-UW24 and LA1-UW36) to provide high-intelligibility audio in Singapore’s most architecturally demanding venues. Whether you need the 24W standard or the 36W high-output model, these columns deliver natural speech and smooth background music without the “muddiness” common in standard box speakers.
Technical Masterclass: The Science of Sound Projection
The LA1 series is engineered to solve the problem of high-reverberation rooms where sound often bounces off ceilings and floors, making speech difficult to understand.
1. Vertical Line Array Performance
By stacking multiple drivers vertically, the LA1 series creates a narrow vertical opening angle.
Targeted Audio: Sound is concentrated into a horizontal “sheet” that projects across the room at ear level, rather than scattering toward the ceiling.
Increased Reach: Because the sound is focused, it travels further with less power loss, ensuring that people at the back of a hall hear as clearly as those at the front.
2. Natural Wooden Enclosure
Unlike plastic columns, the LA1-UW series is constructed from solid MDF (Medium Density Fiberboard).
Acoustic Damping: Wood is naturally non-resonant, which prevents the speaker cabinet from vibrating and adding “color” or distortion to the audio.
Rich Tonal Quality: This results in a warmer, more natural reproduction of the human voice, which is critical for sermons, lectures, and corporate presentations.
3. Versatile Power Management
LA1-UW24 (24W): Ideal for medium-sized meeting halls and standard retail environments.
LA1-UW36 (36W): The high-power choice for large atriums and high-ceiling venues.
Transformer Tapping: Both models feature 100V matching transformers with easy-to-use power taps (Full, 1/2, 1/4 power) allowing ChoiceCycle to balance the system for different room sizes.
2026 Commercial Integration: Sleek & Reliable
In 2026, aesthetics are just as important as performance. The LA1 series offers a professional, slimline look that complements modern and traditional interiors alike.
Architectural Integration: Available in Black (-D) or White (-L) with a matching cloth grille, these slim columns disappear into the corners or onto the pillars of your building.
Swivel Mounting: Each unit is supplied with a robust swivel bracket, allowing our technicians to “aim” the vertical beam for perfect coverage.
100-Hour PHC Test: Guaranteed to run at rated power for 100 hours straight, meeting the IEC 60268-5 standard for long-term commercial reliability.
ChoiceCycle: Professional Acoustic Engineering
At ChoiceCycle, we specialize in managing complex acoustic environments:
Reverberation Control: We calculate the optimal mounting height and tilt angle to minimize sound reflections off hard surfaces like marble or glass.
System Calibration: We balance the 24W and 36W units to ensure uniform sound pressure throughout your venue, from the stage to the exit.
Sim Lim Square Support: Based at Sim Lim Square, we maintain immediate stock and provide expert onsite commissioning and local warranty support.
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Technical Summary Table
| Feature | LA1-UW24 (D/L) | LA1-UW36 (D/L) |
| Rated Power (PHC) | 24 Watts | 36 Watts |
| Max Power Output | 36 Watts | 54 Watts |
| SPL at Rated Power | 110 dB | 114 dB |
| Frequency Range | 165 Hz to 13.5 kHz | 160 Hz to 13.5 kHz |
| Opening Angle (1kHz/4kHz) | 190° / 30° (Vertical) | 190° / 30° (Vertical) |
| Enclosure Material | MDF / Vinyl Wrap | MDF / Vinyl Wrap |
| Dimensions (HxWxD) | 841 x 151 x 129 mm | 1184 x 151 x 129 mm |
| Weight | Approx. 5.5 kg | Approx. 6 kg |
Contact Us – Choicecycle (SGCCTV Singapore)
📍 Store: SGCCTV Choicecycle
Sim Lim Square #02-81, Singapore
📞 WhatsApp: +65 9853 4404
📧 Email: enquiry@choicecycle.com.sg
🌐 Website: https://sgcctv.com.sg
🕒 Operating Hours: 11 AM – 8 PM (Daily)
The Bosch LA1-UW24 and LA1-UW36 Column Loudspeakers are the premier choice for acoustically challenging spaces. Designed specifically for indoor environments where “beaming” (directivity) is essential—such as places of worship, conference venues, and high-ceiling lobbies—these column speakers combat reverberation by focusing sound directly on the audience.
At ChoiceCycle, we specialize in deploying these high-sensitivity MDF (Medium Density Fiberboard) columns to ensure crystal-clear speech and natural background music in Singapore’s most echo-prone venues.
Technical Masterclass: The Science of Beaming
The LA1-UW series is engineered as a vertical line array to manage sound in large, reflective rooms where standard box speakers would create “muddy” audio.
1. Directional Sound Control
By vertically stacking four dual-cone, high-sensitivity drivers, the LA1-UW series achieves a narrow vertical opening angle.
Reduced Ceiling Reflection: Sound is projected in a horizontal “sheet” at ear level. This prevents audio from bouncing off the ceiling, significantly improving the Speech Transmission Index (STI).
Extended Throw: The focused “beam” allows sound to travel further into the back of a hall without the need for excessive volume at the front.
2. Premium MDF Enclosure Architecture
Unlike cheaper plastic alternatives, the LA1-UW series uses solid MDF construction.
Acoustic Damping: The wooden housing is naturally non-resonant, providing a warmer, more natural tone for the human voice—essential for sermons and lectures.
Durable Finish: Covered in easy-to-clean vinyl (Black -D or White -L) with a matching cloth-covered ABS front, these speakers maintain a professional aesthetic for years.
3. Versatile Power Selection
LA1-UW24 (24W): Optimized for meeting rooms and standard community halls.
LA1-UW36 (36W): The high-power model for large atriums and high-capacity canteens.
Push-In Terminal Blocks: Features 4-pole or double 5-pole terminals for rapid tool-free wiring. ChoiceCycle technicians utilize the internal 100V matching transformer to tap power at Full, 1/2, or 1/4 power steps.
2026 Commercial Reliability: The Bosch SAFE Test
In 2026, building managers demand long-term operational certainty. Bosch subjects the LA1-UW series to the most rigorous tests in the industry:
100-Hour PHC Test: Every column is designed to operate at its full rated power for 100 continuous hours without failure (IEC 268-5 standards).
SAFE Test (Simulated Acoustical Feedback Exposure): Bosch’s proprietary test ensures these speakers can handle two times their rated power for short bursts, protecting the drivers from accidental microphone feedback or volume spikes.
Safety & Compliance: Fully compliant with EN 60065 safety standards and international installation regulations.
ChoiceCycle: Professional Acoustic Commissioning
At ChoiceCycle, we don’t just supply hardware; we engineer clarity. Our service for the Bosch LA1-UW series includes:
Vertical Alignment: We use the included swivel wall mounting bracket to precisely aim the vertical beam, ensuring uniform sound pressure from the first row to the last.
Impedance Calibration: We ensure the 100V line is perfectly balanced for your amplifier, preventing overloads and maintaining high-fidelity performance.
Sim Lim Square Support: Visit us at Sim Lim Square for a live demonstration of the LA1-UW24 and LA1-UW36, backed by local stock and professional technical support.
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Technical Summary Table
| Feature | LA1-UW24 (D/L) | LA1-UW36 (D/L) |
| Rated Power (PHC) | 24 Watts (24-12-6W) | 36 Watts (36-18-9W) |
| Max Power Output | 36 Watts | 54 Watts |
| SPL at Rated Power | 110 dB | 114 dB |
| Frequency Range (-10dB) | 165 Hz to 16 kHz | 160 Hz to 19 kHz |
| Opening Angle (1kHz/4kHz) | 190° / 30° (Vertical) | 190° / 30° (Vertical) |
| Connector Type | 4-pole push-in terminal | 4-pole push-in terminal |
| Dimensions (HxWxD) | 841 x 151 x 129 mm | 841 x 151 x 129 mm |
| Weight | 5.5 kg | 6 kg |
Contact Us – Choicecycle (SGCCTV Singapore)
📍 Store: SGCCTV Choicecycle
Sim Lim Square #02-81, Singapore
📞 WhatsApp: +65 9853 4404
📧 Email: enquiry@choicecycle.com.sg
🌐 Website: https://sgcctv.com.sg
🕒 Operating Hours: 11 AM – 8 PM (Daily)
The Bosch LA1-UW24 and LA1-UW36 Column Loudspeakers are the definitive choice for auditoriums and large halls where sound clarity is often lost to echo. By stacking precision drivers in a slim MDF (Medium Density Fiberboard) column, Bosch has created a speaker that “beams” sound directly to the audience, bypassing reflective ceilings and floors.
At ChoiceCycle, we integrate these 24W and 36W column systems to ensure every seat in your venue—from the front row to the very back—receives the same high-intelligibility audio.
Technical Masterclass: The Physics of “Beaming”
The LA1-UW series is engineered as a Vertical Line Array. This specialized arrangement solves the most common acoustic problem in Singapore’s high-ceiling architecture: reverberation.
1. Vertical Directivity Control
Narrow Vertical Opening: By stacking four high-sensitivity drivers, the speaker compresses the sound into a tight vertical beam (30° at 4 kHz).
The Result: Instead of sound scattering and bouncing off the ceiling, it is projected in a horizontal “sheet” across the room. This dramatically increases the Speech Transmission Index (STI).
Maximized Coverage: The LA1-UW36 offers a massive 190° horizontal opening, ensuring that even people sitting at the extreme sides of a wide hall hear clearly.
2. Non-Resonant MDF Construction
Solid Wood Enclosure: Unlike hollow plastic columns, the LA1-UW series uses heavy-duty MDF. Wood is naturally “acoustically dead,” meaning the cabinet itself doesn’t vibrate and distort the sound.
Warm Tonal Balance: This produces a rich, natural reproduction of the human voice, making it the preferred choice for sermons, lectures, and corporate addresses.
3. Rapid Power Calibration
Triple-Tap Transformer: Features an internal 100V matching transformer with power taps for Full, Half, and Quarter power.
Tool-Free Wiring: Equipped with 4-pole push-in terminal blocks, allowing ChoiceCycle technicians to perform fast, secure terminations on-site without specialized tools.
2026 Durability Standards: The SAFE Matrix
In 2026, professional audio systems are expected to last a decade. Bosch guarantees this through rigorous environmental and stress testing.
100-Hour PHC Test: Bosch runs these units at their maximum rated power (e.g., 36W) for 100 continuous hours to ensure the voice coils and transformers never fail under load.
SAFE (Simulated Acoustical Feedback Exposure): These speakers are tested to withstand double their rated power for short intervals. This prevents the drivers from blowing out if a microphone accidentally triggers a high-pitched feedback loop.
Architectural Finish: Available in Black (-D) and White (-L) with a high-quality vinyl wrap and matching cloth grille, designed to blend into both modern and heritage building interiors.
ChoiceCycle: Professional Layout & Support
At ChoiceCycle, we specialize in the engineering of clear communication:
Vertical Beam Alignment: We use the included heavy-duty swivel bracket to precisely tilt the column, ensuring the “acoustic beam” is locked onto the audience area.
Sound Pressure Mapping: We balance the deployment of 24W and 36W units to ensure uniform volume levels across the entire venue.
Local Expertise: Located at Sim Lim Square, ChoiceCycle provides immediate stock, professional commissioning, and local warranty support for all Bosch PLENA series hardware.
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Technical Summary Table
| Feature | LA1-UW24 (D/L) | LA1-UW36 (D/L) |
| Rated Power (PHC) | 24 Watts | 36 Watts |
| Max Power Output | 36 Watts | 54 Watts |
| SPL at Rated Power | 110 dB | 114 dB |
| Frequency Range | 165 Hz to 13.5 kHz | 160 Hz to 13.5 kHz |
| Opening Angle (1kHz/4kHz) | 190° / 30° (Vertical) | 190° / 30° (Vertical) |
| Enclosure Material | Solid MDF / Vinyl Wrap | Solid MDF / Vinyl Wrap |
| Dimensions (HxWxD) | 841 x 151 x 129 mm | 1184 x 151 x 129 mm |
| Weight | Approx. 5.5 kg | Approx. 6.0 kg |
Contact Us – Choicecycle (SGCCTV Singapore)
📍 Store: SGCCTV Choicecycle
Sim Lim Square #02-81, Singapore
📞 WhatsApp: +65 9853 4404
📧 Email: enquiry@choicecycle.com.sg
🌐 Website: https://sgcctv.com.sg
🕒 Operating Hours: 11 AM – 8 PM (Daily)
The Bosch LA1-UW24 and LA1-UW36 Column Loudspeakers are the ultimate architectural audio solution for Singapore’s grandest spaces. Specifically designed for venues where standard speakers create a “wash” of echo—such as cathedrals, large lecture theatres, and airport check-in rows—these columns use vertical array technology to cut through reverberation and deliver crisp, intelligible sound.
At ChoiceCycle, we specialize in the “Acoustic Steering” of the LA1 series. We don’t just mount speakers; we align the sound beam of these 24W and 36W units to ensure that every spoken word is captured by the audience, not lost to the ceiling.
Technical Masterclass: Line Array Directivity
The secret to the LA1-UW series’ success in large halls is its Vertical Directivity Control, which transforms how sound behaves in a room.
1. Vertical Sound “Beaming”
By stacking multiple high-sensitivity drivers vertically within a single column, Bosch creates a “line source” effect.
Tight Vertical Control: The vertical opening angle is restricted to just 30° at 4 kHz. This “beams” the sound directly at the audience’s ears and prevents it from hitting the ceiling and floor, which are the primary sources of echo.
Ultra-Wide Horizontal Coverage: While the vertical beam is tight, the horizontal opening is a massive 190°. This means a single column can cover the entire width of a wide hall or sanctuary.
2. Acoustically Dead MDF Enclosure
The Wood Advantage: Unlike plastic speakers that can “ring” or vibrate at high volumes, the LA1 series uses high-density MDF (Medium Density Fiberboard).
Tonal Warmth: The natural damping properties of wood provide a rich, warm vocal reproduction that is far more pleasant for long sermons, speeches, or background music.
3. Efficient 100V Integration
Multi-Tap Versatility: The internal transformer allows for power tapping at Full, 1/2, and 1/4 power. ChoiceCycle technicians use this to balance the volume between columns placed at the front versus the rear of a long room.
Push-In Connectivity: The 4-pole push-in terminal blocks ensure a secure, maintenance-free connection that is faster to install and more reliable than traditional screw terminals.
2026 Commercial Excellence: Durability & Style
In 2026, premium venues require hardware that is both visually discrete and technically indestructible.
100-Hour PHC Test: Bosch guarantees these columns can operate at full power (up to 36W) for 100 continuous hours—ensuring they never fail during long conferences or multi-day events.
SAFE (Simulated Acoustical Feedback Exposure): These speakers are built to survive 200% of their rated power for short bursts, protecting your investment from sudden microphone feedback spikes.
Architectural Matching: Available in Black (-D) and White (-L) with a high-quality vinyl finish and matching cloth grilles, these columns blend perfectly into both modern minimalist and heritage classic interiors.
ChoiceCycle: Professional Layout & Calibration
At ChoiceCycle, we ensure your Bosch LA1-UW system is engineered for perfection:
Tilt & Aim Calibration: Using the included heavy-duty swivel brackets, we calculate the exact vertical tilt required to lock the “sound beam” onto the seating area, maximizing the Speech Transmission Index (STI).
Sound Pressure Level (SPL) Mapping: We strategically place 24W and 36W units to ensure uniform audio levels, eliminating “loud spots” near the stage and “quiet spots” at the back.
Local Technical Hub: Visit us at Sim Lim Square for expert advice, immediate local stock, and professional commissioning backed by a full Bosch manufacturer’s warranty.
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Technical Summary Table
| Feature | LA1-UW24 (D/L) | LA1-UW36 (D/L) |
| Rated Power (PHC) | 24 Watts | 36 Watts |
| Max Power Output | 36 Watts | 54 Watts |
| SPL at Rated Power | 110 dB | 114 dB |
| Frequency Range (-10dB) | 165 Hz to 13.5 kHz | 160 Hz to 13.5 kHz |
| Opening Angle (1kHz/4kHz) | 190° / 30° (Vertical) | 190° / 30° (Vertical) |
| Material | Solid MDF / Vinyl Wrap | Solid MDF / Vinyl Wrap |
| Dimensions (HxWxD) | 841 x 151 x 129 mm | 1184 x 151 x 129 mm |
| Weight | Approx. 5.5 kg | Approx. 6.0 kg |
Contact Us – Choicecycle (SGCCTV Singapore)
📍 Store: SGCCTV Choicecycle
Sim Lim Square #02-81, Singapore
📞 WhatsApp: +65 9853 4404
📧 Email: enquiry@choicecycle.com.sg
🌐 Website: https://sgcctv.com.sg
🕒 Operating Hours: 11 AM – 8 PM (Daily)
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