Dayton BR-1 Crossover Question.

[RDV]

In the manual for the Dayton BR-1 they make this statement:

"The high pass filter is comprised of C1 and L1, and is also a electrical 2nd order yet it yields approximately a 3rd
order acoustic response. R2 and R3 attenuates the tweeter’s output 6 dB to match the woofer’s level."

How is this true without the second cap from a 3rd order network?
Is it because the pad resistors have some capacitance, or capacitive properties?

I'm thinking of sort of copying this crossover for a project and I don't understand how this is crossing at 2100HZ.

Thanks in advance.

RDV

 

[preiter]

I beleive the 3rd order response that the manual speaks of is the combined response from the crossover and mechanical effects from the enclosure.

 

[UNDERSTANDIN]

The 3rd order acoustic response is the combined electrical 2nd order response and the driver's innate rolloff.