FULLY TESTED! Nice vintage AUDIO speaker driver from Taiwan Unbranded with model No H16CP45-51F. External diameter of 6 1/2\". Cross holes measurement is 6 1/8\" approx. (Diagonal center/center fixation holes measurement). Ceramic magnet. This speaker could be from the mid to late 1970s. This magnet size is about a 3 Watt power under a 8 ohms impedance. It delivers good full range sound! These comes probably from small size vintage wooden speaker box from stereo sets.Driver weight is 8.04 oz (228 grams).I have this speaker and a lot of other vintage speakers now listed (or to be listed soon), in hand for more then 25 years and up from working in electronic since the 1980s. Check out my other vintage speaker drivers and various items on sale in my storeHEREFULLY TESTEDAll my Speaker drivers are tested with music at the proper impedance setting using a multiple impedance output PA amplifier from radio shack and a FLAC music player on AUX. Mycriteria issimple, to hear a nice clean sound with no distortion or scratchy sound due to defective voice coil or impurities accumulated on magnet, or due to any cone issues. The type of sound a driver delivers is not considered in the analyse as there are many types of sound depending of many construction aspect (IE: less bass/treble) and it\'s uses. One of the photos with listing may show the driver under test (if there are wires connected).
SP50

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