Ed G proposed adding resistors in series with Magges to cut the treble & bass, but virtually ignore the midrange XO point. Adding resistors has consequences in addition to 5dB reduced efficiencies, which are elaborated here.
1st ORDER HIGH-PASS FILTER
CT' ≡ CT×(ZT+RT)/ZT = 15μF ×( 2.7Ω + 3.5Ω )/ 3.5Ω ≈≈ 27μF
2nd ORDER LOW-PASS FILTER
LB" ≡ ZB×(LB + CB×RB×ZB)/(RB + ZB) = 3.9×(3.75e-3 + 10e-6×3.3×3.9)/(3.3 + 3.9)
CB" ≡ CB×LB/(LB + CB×RB×ZB) = 10e-6×3.75e-3/(3.75e-3 + 10e-6×3.3×3.9) ≈≈ 9.7μF