I used this web based calculator to build my 2x12 cabinet.
https://www.diyaudioandvideo.com/Cal...akerBoxVolume/
Some of the dimensions I knew I wanted, but others needed to be calculated out. Calculators for things like driver displacement and resonant frequency and the like are all available.
The programs only allow for 1 speaker so I simply doubled the cubic volume for two speakers. My cabinet is also ported which is my compromise to having neither a sealed or open back cabinet.
I used 19mm form ply from the big green shed at $12 per 600x1200mm sheet. 3 sheets for under $40 was the cheapest way I could figure to get a durable black finish and reasonable build material in one hit...
Cabinet is now loaded with two 16 ohm Celestions in parallel to give me a 8 ohms load... 1 x V30 and 1 x Creamback G12H75
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