I'd start with some impedance runs (needs no mic) and also mic runs to see how tweeter behaves. STEPHENS TRU-SONIC Speakers 206 Trusonic - $379.00. SPF #6 - Ballads - BIGLOBE | Free shipping on many items! VTG STEPHENS TRUSONIC Crossover Dividing Network Tru-Sonic Speaker Woofer HF LF - EUR 83,32. A while back I posted a Karlson K-15 with a Stephens 206ax coax. Stephens Trusonic Speakers - Audiokarma Home Audio … Shop with confidence. Very, very good condition legendary Stephens Trusonic in original condition. Explore. They used cast aluminum baskets, large magnets, large edge-wound voicecoils, and featured free … By 1956 the market had expanded, with Stephens Trusonic’s line of “two-voice” coaxial speakers, conventional coaxial and multi-driver kits. Stephens Trusonic Velonte T-28 SOLD: Price: $120.00: Days/Views: 3804 / 2073 (Posted 2011-11-23) Condition: 7/10 Good: Seller: Ampup (Contact Seller) (Other Seller Items For Sale) Feedback: unrated: Nice pair of vintage Stephens/Trusonic Velonte t-28 speakers. The item “Vintage Stephens Trusonic 120FR Full Range 12 Speakers Pair” is in sale since Sunday, June 14, 2020. From . Trusonic VINTAGE SPEAKERS - ARCHAICAUDIO - Google