Sandcastle 7.2

Designed by: Eric Bartos

Goals

• 7.2 surround sound system for enjoyment and the occasional mix
• +/- 4dB response
• active crossover

Key Features

• F3 of 38Hz on surround speakers (before crossover between subwoofer)
• F3 of 34Hz on center speaker (before crossover between subwoofer)
• F3 of 24Hz on subwoofers
• +/- 4dB from 50Hz to 21kHz on surround speakers
• +/- 4dB from 47Hz to 21kHz on center speaker
• +/- 2dB from 25Hz to 200Hz on subwoofer
• center speaker has active/passive crossover system
• 1/2″ birch ply and 1/2″ MDF construction for center speaker and surround speakers
• 1/2″ birch ply and 3/4″ MDF construction for subwoofers
• BSS Blu-100 & BSS Blu-BoB for DSP

Drivers

• Woofer: Dayton Audio RS225-8
• Tweeter: Seas Prestige 19TFF1
• Midrange (Center speaker only): Dayton Audio RS52AN-8
• Subwoofer: Eminence LAB12-C

Frequency Response

Surround speakers

Surround Integrated Response

Center Speaker

Center Integrated Response

Subwoofer

Sandcastle glossy

Sandcastle Research Paper

Sandcastle Final Testing