Alternative MG-1.5/QR Schematic

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.

1^st ORDER HIGH-PASS FILTER

CT'	≡ CT×(ZT+RT)/ZT
	= 15μF ×( 2.7Ω + 3.5Ω )/ 3.5Ω
	≈≈ 27μF

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2^nd 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) ≈≈ 2.1mH
CB"	≡ CB×LB/(LB + CB×RB×ZB)
	= 10e-6×3.75e-3/(3.75e-3 + 10e-6×3.3×3.9)
	≈≈ 9.7μF