To build a cabinet like this we would recommended the use of 15mm plywood with number 10 screws positioned no more than 150mm (6″) apart. Enclosing the the speaker inside a cabinet reduces this effect resulting in a truer bass performance that is neither enhanced nor attenuated.For illustrative purposes, a basic design for a 2×10 or 1×12 open back cabinet is shown here. If the driver were used without any cabinet at all, the sound coming from the rear of the unit would cancel out some of the sound coming from the front, thereby reducing the amount of bass heard. After all guitar speakers are quite heavy and amplifiers that sit on top of guitar cabs are even heavier.Guitar cabs aren’t built to provide bass extension like a PA box might, but they do perform an “acoustic” function. The box design is acoustically less critical than that for hi-fi or PA systems, but proper construction is essential.Primarily, the cabinet is a convenient way of housing the speaker, so it should be solidly built to ensure no joint vibration (unpleasant buzzing), and be strong enough to withstand hard use. Want to build your own guitar speaker cab? Here’s some useful information… As guitar speakers are different, so their cabinets are different.
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