HPG-370GA - Speakers Atlas Sound - Free user manual and instructions
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| Product Type | Outdoor Horn Speaker |
| Brand | Atlas Sound |
| Model | HPG-370GA |
| Application | Commercial paging and background music in public areas |
| Rated Power | 30 W RMS (60 W peak) |
| Transformer Taps | 1.9 / 3.8 / 7.5 / 15 / 30 W at 70V; 3.8 / 7.5 / 15 / 30 W at 100V |
| Frequency Response | 200 Hz – 12 kHz |
| Sensitivity | 101 dB SPL (1W/1m) |
| Impedance | 8 Ω (direct), multi-tap transformer for 70V/100V |
| Coverage Angle | 120° horizontal, 90° vertical |
| Dimensions (W × D × H) | 255 × 225 × 335 mm |
| Weight | 4.4 kg (9.7 lbs) |
| Enclosure Material | UV-stabilized ABS with powder-coated aluminum horn |
| Color | White |
| Mounting | Included adjustable U-bracket with stainless steel hardware |
| Protection Rating | IP44 splash-resistant |
| Wiring | 5-conductor 1.5 m JL-4 hook-up cable with screw terminal |
| Operating Temperature | -20 °C to +55 °C (-4 °F to 131 °F) |
| Included Accessories | Mounting bracket, gasket, instruction manual |
| Recommended Amplifier | 30 W per channel constant-voltage output |
| Compliance | UL 1480A, CSA, CE marked |
| Maintenance | Wipe with dry cloth; check connections annually |
| Safety | Class 2 wiring, insulated transformer |
| Spare Parts & Repairability | Replaceable diaphragm and transformer available |
| Warranty | 5 years limited |
Frequently Asked Questions - HPG-370GA Atlas Sound
What is the difference between direct 8Ω and 70V/100V modes?
In direct mode, the speaker is wired directly to an 8 ohm amplifier. In constant-voltage mode (70V or 100V), the internal transformer matches the speaker to high-voltage lines, allowing multiple speakers to be connected in parallel to a single amplifier over long distances. Adapt the tap setting to the desired wattage.
How do I choose the correct power tap on the transformer?
Select a tap based on your application. For paging, lower taps (1.9W, 3.8W) suffice for background music, use 7.5W or 15W for moderate sound levels, and 30W for attention-grabbing announcements. The sum of all tap settings on a line should not exceed 80% of the amplifier’s output to avoid overload.
Can this speaker be installed outdoors?
Yes, the HPG-370GA has an IP44 rating, making it splash-resistant and UV-stabilized. However, avoid direct prolonged rain exposure; mount it under an eave or with the horn facing downward.
What amplifier would you recommend for a 70V installation?
Use a constant-voltage amplifier (70V output) rated at least the total wattage of all speakers. For a single speaker, a 30W–60W paging amplifier works well. Make sure the amp's 70V output is connected to the speaker's 70V tap.
How does the mounting bracket work?
The included U-bracket attaches to the speaker via two side screws. The bracket base can be rotated 360° and tilted for precise aiming. Use the stainless steel hardware provided for secure wall, ceiling, or pole mounting.
What is the frequency response and is it good for music?
The speaker reproduces 200 Hz to 12 kHz, which is optimized for speech intelligibility. It can play music, but bass response is limited. For high-fidelity music, pair with a subwoofer or choose a full-range speaker. It excels in paging and background music.
How do I wire the speaker to a 100V line?
Use a cable stripper to connect wires to the screw terminal. For 100V, tap the transformer at the 100V side and choose power (e.g., 7.5W). Ensure the amplifier is turned off before wiring. Do not daisy-chain more than 20 speakers on a single line without calculating total load.
How should I maintain this speaker?
Wipe the exterior with a damp, non-abrasive cloth. Check the connections and screws annually. Do not use solvents. The aluminum horn can be painted if desired, but avoid covering the protective coating.
What are the most common reasons for no sound?
Common causes include incorrect tap selection, broken solder joints, corroded connections, or an amplifier overload. Check the continuity of the line with a multimeter. If the diaphragm is visibly damaged, it can be replaced.
Is the speaker repairable?
Yes, the HPG-370GA is serviceable. The diaphragm and transformer are replaceable. Contact Atlas Sound for genuine replacement parts. For safety, have repairs performed by a qualified technician.
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USER MANUAL HPG-370GA Atlas Sound
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Product information
Brand : Atlas Sound
Model : HPG-370GA
Category : Speakers