Pioneer cast frame 12\" woofers. I\'ve been told thesewere used in CS-88 speakers. They have \"Pioneer\" cast in the frame, and are labelled \"30-48F\" on the magnet.The magnets are Alnico and the surrounds are fabric.

I measured the speakers with Woofer Tester 3 software. Static resistance is 5.35 ohms, 8 ohms nominal impedance. Resonant frequency is 29 Hz, sensitivity SPL is 87 dB, and V(as) is 3 cubic feet.

The woofer frame is 12\" in diameter, with six 1/2\" mounting tabs. Center-to-center across the woofer, the mounting holes are 12 1/4\" apart. Two sides are squared off, like AR 12\" woofers, so that they can fit in a narrower cabinet, and they are 11 1/2\" from flat side to flat side. They are 5 3/4\' deep and weigh 9 lbs. each.

The woofer cones and fabric surrounds are in excellent shape. The cones had faded to different colors, so they were coated with a black acrylic coating especially formulated for woofer cones. There is a gasket on the front of the woofers, so they probably originally mounted to the rear of the baffle.

The woofers will be carefully packed and shipped in one 28 lb. package by UPS ground.Local pickup around Ithaca, NY or Philadelphia, PA can be arranged. The shipping calculator includes UPS insurance, pickup and confirmation fees and the cost of packing materials. For foreign buyers, shipment is by United States Postal Service Express or Priority Mail. Express is slightly more expensive, slightly faster, and offers better tracking.

Buyers should be aware that they are purchasing a piece of vintage audio equipment. I try the best I can to accurately describe the item and its current operating condition, but I make no warrantee of any sort, and the item is sold \"AS IS,\" \"NO RETURNS.\" Any obvious physical damage caused in shipping will be covered by insurance, and it is up to the buyer to file a claim for this. It is always possible for items to sustain shocks that alter their working condition but result in no obvious physical damage or for a part tofail simply due to age, and I disclaim responsibility for this. These caveats aside, in my own experience, vintage audio equipment that has been working for 20-50 years is quite robust, and likely to arrive in thesame condition as it was in when shipped.