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Home / Venue Audio Equipment / Constant Voltage Wall-Mounted Speaker 20/30/40W Public Broadcasting Background Music Audio

Attributes

Brand -
Category Audio & Video Electronics / Venue Audio Equipment
Origin -
Power Rating 20W / 30W / 40W (Selectable via Tap)
Impedance 100V / 70V Constant Voltage Line
Frequency Response 80Hz - 16kHz
Sensitivity 90dB ± 3dB (1W/1m)
Material ABS Plastic Housing with Metal Grille
Mounting Type Wall-Mounted with Included Bracket
Dimensions 280mm x 190mm x 95mm
Weight 1.8 kg
Protection Rating IP54 (Splash and Dust Resistant)
Application Public Address, Background Music, Retail, Offices

6 reviews

A

Anonymous

Mar 18, 2026

Rating: 5/5

Reliable and durable

We have had these running 12 hours a day for three months in a busy café. No issues whatsoever. The IP54 rating gives us peace of mind near the coffee station where there is occasional steam and moisture.

A

Anonymous

Mar 17, 2026

Rating: 4/5

Good aesthetic and performance

These blend well into the office ceiling and wall areas. They look professional and the white finish matches our decor. Sound is balanced, though bass is naturally limited given the size, which is expected for this category.

A

Anonymous

Mar 17, 2026

Rating: 5/5

Excellent clarity

Installed these in a school hallway system. Voice intelligibility is excellent, which was our primary requirement for safety announcements. The constant voltage setup worked flawlessly with our existing amplifier.

A

Anonymous

Mar 14, 2026

Rating: 3/5

Decent but instructions could be better

The speaker itself works well once installed. However, the wiring diagram for the power taps was a bit confusing for someone not familiar with 70V systems. Once figured out, it performs as advertised.

A

Anonymous

Mar 11, 2026

Rating: 4/5

Great value for public address

Solid build quality and easy to mount. We use them in a warehouse for announcements and background music. The volume is sufficient for a noisy environment. Only minor issue is the grille could be slightly more robust.

A

Anonymous

Mar 09, 2026

Rating: 5/5

Perfect for our retail store

We installed six of these speakers in our clothing boutique. The sound quality is crisp and clear without being overwhelming. The ability to switch between 20W, 30W, and 40W made zoning very easy during installation.

5 FAQ

Q: Do I need a specific amplifier for these constant voltage speakers?

A: Yes, you will need a public address amplifier that supports 70V or 100V constant voltage output. Standard home stereo amplifiers with low impedance outputs (4-8 ohms) are not compatible without a matching transformer.

Q: Can these speakers be used outdoors under a covered patio?

A: Yes, these speakers have an IP54 rating, which protects against dust and water splashes from any direction. They are suitable for covered outdoor areas like patios or awnings, but should not be directly exposed to heavy rain or submerged.

Q: What is the maximum cable length recommended for these speakers?

A: For optimal performance in a 70V/100V system, you can run cables up to 300 meters depending on the wire gauge used. We recommend using 16 AWG or thicker speaker wire for long runs to minimize signal loss.

Q: Is the mounting bracket included in the box?

A: Yes, the package includes a sturdy metal mounting bracket and all necessary screws and anchors for installing the speaker on drywall or concrete surfaces.

Q: How do I change the wattage setting on the speaker?

A: The speaker features a selectable tap switch located on the back panel near the terminal block. You can easily switch between 20W, 30W, and 40W using a small flathead screwdriver before mounting the unit to the wall.

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