Harmonic Design PLB - 24 ohm Passive subwoofer with 10 x 3.5″ high-excursion drivers, column design, 150 W RMS, 24 ohm
FEATURES
Extremely compact subwoofer, configurable in array mode, designed according to the elegant design of the HD PL series column speakers and featuring astonishing bass reproduction; to be combined with any column speaker in the mid/high range for full-range applications.
Unobtrusive, it consists of ten powerful 3.5" long-excursion drivers capable of handling a continuous power of 150 WRMS. Thanks to the proven single-roll surround technology for wide linear excursion and the best possible impulse response, this slim 104 x 108 mm subwoofer has a frequency response from 40 to 160 Hz (-6 dB) and is therefore ideal for invisible applications in restaurants, conference rooms, museums, theaters and churches. The nominal impedance is 24 ohms, so that various sound reinforcement configurations can be efficiently implemented with hd Qi series installation amplifiers.
Main features
- Passive subwoofer with 10 x 3.5" high-excursion drivers
- Column design
- Extraordinary reproduction from 40 Hz
- High sound pressure up to 115 dB
- Weather-resistant aluminium cabinet
- Easily integrated into environments
- Weight of 6 kg
SPECIFICATIONS
- Type: subwoofer
- Transducers: 10 x 3.5″ high excursion drivers
- Power handling capacity (RMS / peak): 150 / 300 W
- Frequency response: 40 – 160 Hz
- Sensitivity: 83 dB/W/m
- SPL max: 115 dB
- Nominal dispersion angle: omnidirectional
- Nominal impedance: 24 ohm
- Enclosure: powder-coated aluminium profile black, steel grille with acoustic foam,
incl. 2 x M6 nuts, base plate optional - Connection: clamping terminal inside
- Cable insert at the back
- Dimensions (W x H x D): 108 x 1029 x 104 mm
- Weight: 6 kg
- Options: RAL color, wall mount, base plate, special length, weather protection
Techincal characteristics
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About Harmonic Design
Harmonic Design is a brand specializing in the design and production of high-performance professional sound reinforcement systems. The catalog includes full-range loudspeakers, subwoofers, stage monitors, and solutions for fixed installations and live applications, designed to ensure high intelligibility, sound pressure, and reliability even in the most demanding uses. Thanks to careful acoustic design and the use of quality components, Harmonic Design products are appreciated by audio service providers, installers, and entertainment professionals who seek high performance and precise sound reproduction. Discover the Harmonic Design range and find the sound reinforcement system best suited to your professional needs.
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Shipments
Shipments
We ship throughout Italy and the European Union via selected express courier partners. All orders travel in special reinforced packaging and are covered by 100% included insurance to fully protect the value and integrity of professional equipment during transport.
Returns and refunds
Returns and refunds
You can request a return within 14 days of receiving the order. As these are professional hardware and devices, items must be returned completely intact, unused, unactivated, and sealed in their original packaging, complete with all accessories and manuals.
Frequently Asked Questions
Can't find the answer you're looking for? Our team of specialists is at your disposal for configurations or technical questions.
What are your shipping and delivery times?
What are your shipping and delivery times?
Orders are processed within 24/48 business hours. Delivery is made by insured express courier to guarantee maximum protection and safety even for the most delicate and expensive equipment.
Are the products covered by an official warranty?
Are the products covered by an official warranty?
Yes, all products are 100% original and covered by the official 24-month manufacturer's warranty. In addition, our technical department offers free after-sales support to assist you with the initial setup of your system.
How does the right of withdrawal work?
How does the right of withdrawal work?
If the hardware does not meet your expectations, you can return it within 14 days of receipt. The product must be returned intact, unused, and sealed in its original packaging, complete with all accessories and manuals.
What does it mean if a product is "Available on order"?
What does it mean if a product is "Available on order"?
Some complex professional audio systems or lighting equipment are ordered directly from official distributors based on customer requests. You can proceed with the purchase as normal and our team will immediately inform you of the exact arrival times at our warehouses.

