'Minimal" means (almost) negligible horn gain.
An exponential mid-bass horn of the "J-Horn"s dimensions, similar to a JBL 4560 horn, will roll off at around 12dB per octave below approximately 200 Hz, at 100Hz it may be -10to12dB lower in level, which would be perceived as less than half as loud. Below the horn Fc (cutoff frequency) the output transitions to that of a sealed box.
Depending on the size of the compression chamber or bass reflex box, you could expect response between the JBL 4560's response and the red line.
Making the horn smaller will reduce the Fc by approximately the ratio of size reduction, for example a half size version would roll off below 400Hz.
An exponential mid-bass horn of the "J-Horn"s dimensions, similar to a JBL 4560 horn, will roll off at around 12dB per octave below approximately 200 Hz, at 100Hz it may be -10to12dB lower in level, which would be perceived as less than half as loud. Below the horn Fc (cutoff frequency) the output transitions to that of a sealed box.
Depending on the size of the compression chamber or bass reflex box, you could expect response between the JBL 4560's response and the red line.
Making the horn smaller will reduce the Fc by approximately the ratio of size reduction, for example a half size version would roll off below 400Hz.
Last edited:
Will the 50% version get 50% of all measurements but still use a 15 inch? Or a 10 i inch which have around 50% of SD?
I understand 🙂
A 10 inch driver fits when all measurements are divided with 1,5 (red figures)
Will this work ok from 250 to 1200 Hz?
A 10 inch driver fits when all measurements are divided with 1,5 (red figures)
Will this work ok from 250 to 1200 Hz?