Don Pearce wrote:


This is not how guitar speakers are designed. Reflex speakers are
generally poor guitar designs, which should be dropping fairly fast from
about 100Hz, and with some nice hefty peaks up at a few kHz. Go for a
fully sealed box if it is fairly big, or for a smaller cabinet, have
about half of the back panel open.

High fidelity and flat response are NOT what you need for this job.


This is true. Also, 150 litres is ridiculously large for a 1x 12 guitar speaker. I have a 12" JBL in a 40-litre cabinet for my bass!

The problem with using WinIsd and similar programs is that you must know the target respons of your planned system, i.e. the frequency response you are aiming to achieve. Otherwise, it will often suggest an over-large box that is useless. Which, if I am not very much mistaken, is what you are going to end up with.

Use a speaker designed for guitar and get the manufacturer's cabinet recommendations. Easy.

Stephen