6.5" (16.5cm) subwoofer

Yes, 6.5-inch subwoofers deliver surprisingly powerful bass for their compact size. With RMS power ratings from 100 to 1000 watts, they produce punchy sound that's especially impressive in the frequency range around 80 Hz. The quality depends heavily on the chosen driver and the right match with the enclosure and amplifier.

Power handling varies by model between 100 and 1000 watts RMS. Most 6.5-inch subwoofers at MT Audio Shop fall in the range up to 500 watts, which is completely sufficient for powerful bass in a car. When buying, pay attention to the stated RMS power – it indicates continuous power handling, not peak power.

Subwoofers come in various diameters from 6.5 to 18 inches. The most common sizes for cars are:

• 6.5 inches (16.5 cm) – space-saving
• 8 inches – compact all-rounder
• 10 inches – popular standard
• 12 inches – powerful bass
• 15 inches and larger – extreme deep-bass performance

Sealed enclosures need only about 10 liters and deliver precise, controlled bass. Bass reflex versions require 15-20 liters for maximum depth and higher efficiency. The optimal volume depends on the specific speaker – our experts are happy to calculate the ideal enclosure for your chosen model.

The amplifier should deliver about 75-150% of your subwoofer's RMS power. For a 300-watt RMS driver, an amplifier with 250-450 watts is recommended. Pay attention to the impedance: most 6.5-inch models are 2 or 4 ohms – your amplifier must be able to handle this load reliably.

The compact dimensions allow for a variety of installation locations:

• Under the seats (especially the driver's/passenger's seat)
• In the spare tire well
• In the side of the trunk
• In the door panel (for reinforced doors)
• In custom enclosures behind trim panels

6.5-inch subwoofers are ideal if you want powerful bass without losing space. They offer the best ratio of compactness to performance – perfect for smaller vehicles or when you want to keep the trunk free. For extreme deep bass, larger drivers are better, but for normal music listening, high-quality 6.5-inch models from B2 Audio, Focal, or Ground Zero deliver impressive results.