SPL from 2× 15″ in a 4th-order bandpass?

Posted May 18, 2026 · 1 reply

eZstah Question

Modeling 2× 15″ pro drivers in a 4th-order bandpass for a small venue. WinISD says ~128 dB in the passband. Is that realistic or am I going to be disappointed once it is built?

1 reply

eZstah OP May 18, 2026

Modeled SPL assumes you reach Xmax cleanly. Real-world, derate ~3dB and watch port compression.

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