30Hz High Power Compact Passive Radiator

30Hz High Power Compact Passive Radiator


PDF OF THE PROJECT: Project PDF

Designer:
mercifullyfree

Project Category:
Subwoofers

Project Level:
Advanced

Project Time:
1-8 Hours

Project Cost:
$500 – $1,000

Project Description:
Lab 12C used with 2 passive radiators to achieve 30Hz performance in compact enclosure. Due to lack of table saw I modified enclosure kit, but starting from scratch would probably be easier, if table saw available. Been using since 2014 with organ for low pedal notes with great results, but obviously, other uses would be great.

Design Goals:
Compact enclosure (<40 pounds & 2 cu ft) that extends to 30HZ with full use of 500W rating of LAB 12C for professional use with organ bass

Driver Selection:
LAB 12C

Enclosure Design:
passive radiator (dual)

Enclosure Assembly:
adapted kit

Crossover Design:
electronic with high pass at 25HZ

Conclusion:
successful – Been using for over 3 years and happy

About the Designer:
50 years exp (good to get old). Built first folded horn 45 years ago. Read republished (1971) Thiele/Small articles and built “bass reflex” cabinets, doing calculations by hand…love sound and love good bass.

Project Parts List

Dayton Audio SD315-PR 12″ Passive Radiator
Eminence Lab 12C High Power 12″ Subwoofer Speaker Driver 4 Ohm
Heavily Modified fEARful 12sub enclosure kit
Various hardware

1 comment

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  1. 1
    Kevin

    Hey Brother, I built my first set of speakers over 40 years ago and have built some good stuff in between. Sounds like you built an awesome sub there, right on! I also love sound and good bass!

    Kevin

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