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Vintage Sound Dynamics 12\" Woofers - Matched Pair (12S / 1200 SMT / 12SC) - Coils Tested Good - Need Refoam
Up for sale is an authentic, original factory matched pair of vintage late 1970s / 1980s Sound Dynamics 12-inch high-efficiency rock/monitor woofer drivers.
Manufactured in Canada by Audio Products International (API), the legendary Canadian loudspeaker group behind Sound Dynamics, Energy, and Mirage. Pulled from classic high-sensitivity Sound Dynamics models such as the 12S, 1200 SMT, 120-S, and 12SC.
Features heavy stamped steel frames, bumped backplates with central magnet vent caps, and high-compliance cones stamped 12SC on the underside. One driver retains factory script \"Sound Dynamics\" on the magnet cover.
Item Details & Specifications:
- Brand / Manufacturer: Sound Dynamics / API (Audio Products International, Canada)
- Model Compatibility: Sound Dynamics 12S, 1200 SMT, 120-S, 12SC, and related API systems
- Cone Stamping: 12SC
- Nominal Diameter: 12 Inches (measures approx. 12\" to 12.25\" outer diameter)
- Depth: Approx. 5.75 Inches
- Nominal Impedance: 8 Ohms
- Terminals: Factory dual-tab spade / solder lugs with polarity dot indicator
- Quantity: 1 Matched Pair (2 Woofers)
Condition & Restoration Notes:
- Voice Coil Testing: Both drivers have been tested with an analog multimeter—both voice coil circuits test good, continuous, and responsive!
- Surround Condition (Needs Refoam): Both original foam surrounds have suffered normal vintage foam rot / deterioration and will require a standard 12\" replacement foam kit installed prior to active use (commonly refoamed with 12\" Sound Dynamics / Cerwin-Vega style surround kits).
- Cone & Frame Condition:
- Woofer #1: Cone and center dust cap are clean and structurally solid.
- Woofer #2: As disclosed, this driver is noticeably dirtier and exhibits rougher cosmetic wear/surface weathering and a rough edge along the cone perimeter where the old foam separated. Dust cap is intact.
- Frames & Motors: Stamped steel baskets and magnet assemblies are straight and structurally intact. Terminal strips are solid. Sold strictly AS-IS for refoaming and restoration.
Please review all close-up photos for exact physical condition.