I am planning to use the SB acoustics SB17CAC35-4 6.5" driver as a midrange, crossed at 200 Hz with an active crossover. This driver has an Fs of 29.5 Hz, Vas of 38 liters, and Qts of 0.29.
Almost any closed-box volume larger than 7 liters leads to an over-damped bass response... a gentle roll-off starting at 200 Hz. I will use DSP to adjust the response from 50 Hz to 200 Hz before applying the high-pass DSP filter. Due to my cabinet design constraints, I will have at least 8 liters available for this driver, but any thing from 8 liters to 15 liters is very achievable...
From the standpoint of midrange clarity and detail, is there an advantage to a larger enclosure? I can imagine that a larger enclosure might perform better because the back radiation has a larger space, with a greater volume of absorbing material (in my case wool and polyester fibers) to absorb and dissipate the energy... however, this is speculation. I am interested in anyone's experience.
Jim
Almost any closed-box volume larger than 7 liters leads to an over-damped bass response... a gentle roll-off starting at 200 Hz. I will use DSP to adjust the response from 50 Hz to 200 Hz before applying the high-pass DSP filter. Due to my cabinet design constraints, I will have at least 8 liters available for this driver, but any thing from 8 liters to 15 liters is very achievable...
From the standpoint of midrange clarity and detail, is there an advantage to a larger enclosure? I can imagine that a larger enclosure might perform better because the back radiation has a larger space, with a greater volume of absorbing material (in my case wool and polyester fibers) to absorb and dissipate the energy... however, this is speculation. I am interested in anyone's experience.
Jim