Home > 5-8, 60-90lbs, Passive, Tower/Floor Standing > Diamond Series

Diamond Series

This 2.5-way pair of loudspeakers is designed for home theater use.  The design includes four Aura 6″ woofers and a 1″ ScanSpeak tweeter.  The speakers are vented with ports on the back diagonal sides, and have a passive crossover.


Design Goals

  • Cost around $500.
  • Good low frequency extension.
  • Produce 105 SPL (THX standards).
  • Low power requirements.

Key Features

  • 2.5-way system
  • passive crossover
  • vented system
  • f3 of 40hz
  • bandwidth of +/- 3 dB


Aura NS6-255-8A 6″ Woofer

ScanSpeak D2608/9130  1″ Textile Dome Tweeter


Walls are 2 layers with:

3/4″ Birch plywood, 3/4″ MDF


Design Statement

Speaker Drafting

Final Testing Report

Crossover Schematic

Speaker Glossy

Performance Graphs

Diamond Series Driver Summation (Black-Full, Red-Tweeter, Yellow-Mid, Green-Low)

Diamond Series System Decay

Diamond Series Left-Right Speaker Difference

  1. March 12, 2013 at 4:33 pm

    This site was… how do you say it? Relevant!! Finally I’ve found something which helped me. Thanks!

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