Size: 4"W x 6 1/8"L.
1970-77 It will be nesessary to reuse original soldered wire connector harness (or purchase new)
It will be nesessary to soldered replacement wire connector to speaker (purchase separately), or attach wires harness directly to speaker with spade connectors (supplied)
These speakers are manufactured in the USA using compact high energy neodymium (NEO) magnets that allow these 4 x 6" speakers to fit where others won't. Neodymium magnets (commonly referred to as super magnets) are 1/10 the physical size of round ceramic magnets found on most modern speakers but provide the same or higher field strength. These speakers are true 8 ohm impedance and are fully compatible with 10 ohm Delco speakers. The improved construction includes whizzer cones for improved high frequency response and fabric or sanoprene rubber surround and larger spiders for improved low frequency response. They work exceptionally well with original Delco radios and will make your classic radio sound better than new. 5 year warranty against manufacturing defects.
Note: Many replacement speakers now sold by the discount stores, auto parts stores and mail order restoration parts houses are labeled as "4 to 8 ohm compatible" and are in fact 4 ohm speakers. These speakers can damage the older transistor radios. 4 ohm speakers will measure around 3.2 ohms with a DC ohmmeter. An 8 - 10 ohm speaker will measure around 7.4 ohms with a DC ohmmeter. The DC resistance is the critical number for the Delco radios as the output transistor is in series with the speaker. A 4 ohm speaker will draw twice the current of an 8 ohm and cause the amplifier transistor (the half dollar size device mounted to the black finned heat sink on the back of a Delco radio) to run very hot. The speaker cone should be displaced in an upward (away from the magnet) direction about 1/8" when a Delco radio is turned on. If the cone moves down toward the magnet, the speaker leads need to be reversed. Warning: Never run 4 ohm speakers on any vintage car automobile radio using transistor output circuits.
