PURIFI SPK16 DIY Speaker Kit for 2-Way Passive Bookshelf Speakers (Pair)

The PURIFI SPK16 is a complete speaker DIY kit for passive 2-way bookshelf speakers developed by PURIFI to deliver high-end acoustic performance in a compact enclosure of approximately 19 liters. Based on an architecture using a 6.5-inch woofer/midrange driver, a 1.3-inch high-dispersion tweeter with a large 147mm waveguide, and two 6.5-inch passive radiators, the SPK16 was designed to provide an extended and particularly linear response with bass extension reaching 32Hz at -3dB despite its compact cabinet volume.

The kit includes all the drivers required to build a pair of speakers:

• 2x PURIFI PTT1.3T04-HAG-10 tweeters with 147mm waveguide
• 2x PURIFI PTT6.5X04-NAA-09 woofers with black anodized aluminum cone
• 4x PURIFI PTT6.5PR-NA2-09 passive radiators
• an additional mass kit to adjust passive radiator tuning according to PURIFI recommendations

The system uses a passive 2-way configuration with a crossover frequency of approximately 1.8kHz and is based on an advanced acoustic design using modeling and optimization methods through Comsol and Matlab. The recommended cabinet dimensions are approximately 250 x 450 x 300 mm and benefit from a geometry specifically engineered to optimize sound dispersion and reduce acoustic disturbances caused by baffle edges. This design allows the SPK16 to achieve extremely wide and consistent dispersion with a diffusion angle of ±70° up to beyond 15kHz.