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Snorky

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.

Photo of "Snorky" subwoofer

 

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

Graph - SPL

 

Two 86mm ports keep velocity below 10 m/sec

Velocity graph

 

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.

Flare-it screenshot 10mm flares

 

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

Flare-it screenshot 19mm flares

 

Cone excursion is fine

Excursion graph

 

Extra pages for this speaker

Project file for WinISD Pro 0.50a7
Boxnotes file (you will need Boxnotes to open this)

The next speaker provides extension to 17hz

 

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