This subwoofer was in search of a name until I realised that the internal ports were bent into the shape of a snorkel - thus "snorky" was born. This sub is the one designed on the WinISD case-study page and was built for a friend. The goal was to produce a conventional looking sub that was not too big.

The folded ports, which are detailed on the gallery page are longer than the box is tall.

The level of finish is the best yet, mainly as a result of using glue and clamp construction. Screws are only required to hold panels while glue dries. Leaving them out sacrifices no strength and gives a much cleaner box

The new owner has taken delivery of this speaker and by first accounts seems quite happy with it.

• Single 10 inch Jaycar CS-2274 Driver .
• 80W Jaycar AMP .
• 50 Litre 1.8 cu.ft enclosure - 27kg - 59lb
• 700H * 300W * 400D
• Tuning Frequency 28 Hz
• Two 90mm internal ports
• WinISD Calculated Peak Output 105 dB
• Measured Avg Output (Complex Sound) before distortion 100db
• Estimated cost $480 Aus

The 80W amplifier has 4dB boost @ 35hz which negates the need for a hi-pass filter

Two 90mm ports keep velocity below 10 m/sec

Both ends of the ports were flared by 10mm using a rollover bit in the router.

This Flare-it screenshot shows that this is just about good enough.

Moving to 16mm flares would have been icing on the cake. In practice, these would be 20mm heat molded, or if you have a full full sized router, 19mm routed flares

Cone excursion is fine

There are some more pictures in the Snorky Gallery .

Project file for WinISD Pro 0.50a7

The next speaker provides extension to 17hz