To make the most out of his home theater sound system [Baccula] built this folded horn enclosure for as much ... Tuba HT and it is aimed at a 15″ speaker. [Bill] charges for the building ...

A regular car horn is fine, but lacks finesse for more ... The Audio FX board has its output hooked up to a 120W amplifier, which then feeds into a pair of 15W PA-style horns.