Audibax GR15-DE - Professional 15" Woofer (300 W RMS, 4 Ω) for Replacement and PA
The Audibax GR15-DE is a professional 15-inch woofer designed as a reliable replacement for passive loudspeakers, PA systems, and installation projects. With 300W RMS and 500W peak power , a 4Ω impedance , and a sensitivity of 88dB (1W/1m) , it delivers solid bass in the 30Hz to 3.5kHz range. It features a vented magnet for improved heat dissipation, a rigid suspension for enhanced control of movement, and spade terminals for quick and secure wiring. Its 1.5" (≈38mm) voice coil ensures stable response and reliability under continuous use in rental , live, and studio environments.
Main features
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Professional 15" woofer designed for bass reinforcement and replacement of passive speakers.
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300W RMS / 500W max. for balanced performance in compact PA and stage monitors.
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4 Ω impedance to take advantage of stages that deliver higher power at low impedance.
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Frequency response: 30 Hz – 3.5 kHz , useful as a bass or bass/midrange driver in appropriate crossovers.
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Sensitivity: 88 dB (1 W/1 m) , with a contained and controlled bass character.
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1.5" (≈38 mm) coil with improved thermal management thanks to the ventilated magnet .
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Rigid suspension to minimize distortion from excursion in intensive use.
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Spade terminals for quick connection of internal wiring.
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Weight: 2.3 kg and black finish .
Product benefits
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Live reliability : the magnet's ventilation system helps maintain thermal stability during long sessions.
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Easy installation : Faston/sword type terminals that speed up replacement in existing boxes.
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Wide compatibility : 15" and 4 Ω format common in many PA loudspeakers.
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Controlled bass : rigid suspension that favors a more precise movement of the cone.
Use cases
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Replacement of 15" speakers in passive baffles for stages, halls and pubs.
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Compact PA as a bass channel in 2-way cabinets with appropriate cutoff in the filter or processor.
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DIY / Custom : construction of custom acoustic enclosures for backline or sound reinforcement.
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Fixed installation in audio systems of venues, gyms or cultural centers.
Frequently Asked Questions
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Is it compatible with my speaker? Check three points: nominal size 15", impedance 4 Ω , and similar power rating to the original. If they match, compatibility is high.
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Does it work as a dedicated subwoofer? It can function as a bass driver, but for deep sub-bass, it's best to use a dedicated enclosure and filtering system, or a driver optimized for subwoofers.
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Does it include a grille or screws? No; the usual contents are just the woofer. Keep the original screws from your box.
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What type of connectors does it use? Internal spade-type terminals for quick cable connection within the enclosure.
Integration tips
- Adjust the crossover of your passive filter or digital processor to work within the useful range (e.g., cutoffs between 80–2,000 Hz depending on the cabinet configuration and the tweeter used).
- Check the polarity of the terminals when replacing it to maintain the phase coherence of the system.
- Properly seal the enclosure and check gaskets/foam to prevent air leaks that could affect performance.
Project description
Professional 15" woofer in black, 300 W RMS ( 500 W max. ), 4 Ω , frequency response 30 Hz–3.5 kHz , sensitivity 88 dB (1 W/1 m) , 1.5" (≈38 mm) voice coil , vented magnet , rigid suspension , spade terminals , weight 2.3 kg . Contents: 1 x 15" woofer
