Definition of 4th order acoustic crossover

[moving_electron]

Does 4"th order acoustic slope" in a crossover" simply mean a typical straight 24dB crossover such as a Linkwitz-Riley or does it have some other meaning?

[tiroth]

It means that the sum of the electrical and driver acoustic responses is 4th order LR.

i.e. you take into account the acoustic response of the driver, instead of assuming it is maximally flat.

[sreten]

It means eventual acoustic roll-off is 4th order which
means the crossover is probably electrically 2nd order.

sreten.

[kelticwizard]

Actually, there is some room for confusion here.

I have actually seen crossovers called 24 dB slope when they were actually just second order. Some people actually include the slopes of both drivers. So two drivers each having 12 dB slopes gets called a 24 dB crossover.

Normally, it doesn't work that way, but you do run into that terminology sometimes.

[speaker]

Originally posted by kelticwizard
Some people actually include the slopes of both drivers. So two drivers each having 12 dB slopes gets called a 24 dB crossover.

Sounds like some people need a slap upside da head.

Haven't heard that transmogrification before.

speaker