Designer:

Dan T McGillicuddy

Project Category:

Subwoofer

Project Level:

Advanced

Project Time:

8-20 Hours

Project Cost:

$500-$1,000

Project Description:

A classic subwoofer

Design Goals:

Output down to 20Hz with good efficiency

Driver Selection:

Dayton Audio DCS450-4 18″ Classic Subwoofer 4 Ohm
Dayton Audio RSS460-PR 18″ Aluminum Cone Passive Radiator

Enclosure Design:

8 cubic foot tower using 2 stacked Denovo Audio 4.0 cu. ft. MDF 18″ Subwoofer Starter Kits

Crossover Design:

A 4 stage Sallen-Key high pass filter using the project 99 board from esp site: https://sound-au.com

stage F Q C R2/5 R3/6
first 18.113 0.54920 0.1µF 82 kΩ 100 kΩ
second 17.306 0.87236 0.1µF 51 kΩ 160 kΩ
third 16.967 1.4155 0.1µF 33 kΩ 270 kΩ
fourth 16.779 4.1964 0.22µF 5.1 kΩ 360 kΩ

Tips & Tricks:

N/A

Conclusion:

Flat response from 20 – 200 Hz

About the Designer:

Dan McGillicuddy is a former acoustician, speaker designer and computer programmer who has retired to his Florida poultry farm.

Project Parts List: