JBL Synthesis HDI-3800

The HDI-3800 is a substantial speaker with a 4-ohm impedance, so it performs best with a robust amplifier. JBL recommends between 250W and 300W of power to ensure you get the full dynamic range and control over those three 8-inch woofers.

Because these are floorstanding speakers with a rear-firing port, they need some breathing room. We recommend placing them at least 12 to 24 inches away from the back wall to prevent the bass from becoming muddy or boomy.

The HDI (High-Definition Imaging) waveguide is designed to control how sound disperses into your room. It creates a wider, more consistent 'sweet spot,' meaning you get accurate, detailed high frequencies even if you aren't sitting perfectly centered between the speakers.

They excel at both. The triple-woofer design provides the punch and scale required for demanding movie soundtracks, while the compression driver ensures the clarity and precision audiophiles look for in critical music listening.

With a frequency response that reaches down to 37Hz, the HDI-3800 handles most music and movie content with authority on its own. However, if you are building a dedicated home theater system and want to feel the deepest LFE effects, adding a dedicated subwoofer will still provide that extra layer of visceral impact.

Each speaker weighs approximately 83.78 lbs. Given their size and weight, it is highly recommended to have a second person available to help with unboxing and positioning to avoid injury or damage to the cabinet finish.