The AudioFred Sony FrugalArray, using twelve 69 cent Sony 5.25" buyout drivers with a single Vifa XT25 tweeter.
The AudioFred Sony Sweet 69 FrugalArrays have twelve 69 cent Sony boombox woofers with a single Vifa XT25 tweeter.
Backside of one FrugalArray showing wiring and crossover. Tweeter wiring is silver plated teflon insulated copper. Notice how the woofer cutouts are chamfered to minimize cavity resonances.