Designer:

Paul S Cole

Project Category:

Subwoofers

Project Level:

Intermediate

Project Time:

8-20 Hours

Project Cost:

$500-$1,000

Project Description:

After building a Dual 12″ with 2 passive radiators, similar to the Legacy Audio Foundation subwoofer or the REL 212SE Sub, I wanted to see how a dual 8 would turn out. Using 2 Dayton Audio RSS210HO-4 8″ drivers wired in series for an 8 ohm load, and one Earthquake passive on bottom, and one Sunfire Jr. Passive on back, and I had planned on using the SPA500DSP plate amp, but I had a new Klipsch R-115sw plate amp sitting around that’s fairly similar in specs. The floor space this thing takes up is only 10.5″ wide and 12″ deep, and I can honestly say it puts out more quality bass than any single 12 I own, and I have many 12″ subs.

Design Goals:

My goal was to create a mini version of the Legacy Foundation subwoofer or REL 212SE sub

Driver Selection:

2 Dayton Audio RSS210HO-4 8″ wired in series for an 8 ohm load, & 2 Passive Radiators an Earthquake, & Sunfire Jr.

Enclosure Design:

Sealed sub with passive radiators

Crossover Design:

N/A

Tips & Tricks:

KISS, keep it simple subwoofer…lol.

Conclusion:

To say the bass was shocking is an understatement. I’ve now built 3 of these and been selling them for very cheap at $1000 each. However, I should be charging about $1,500 but I bought the drivers on sale, and got great deals on the rest of the parts, so I passed the savings onto everyone else. At regular price, you’ll have at least $750+ in materials if you use the SPL500DSP plate amp.

About the Designer:

Based on my Dual 12 design and similar to the Legacy Foundation Subwoofer and REL 212SE

Project Parts List: