User manual CAD AUDIO E-100

[. . . ] During transients, these OpAmps may require more current than typical phantom power supplies can deliver. The extra current demands are accommodated by our unique power supply design. Instead of using phantom power to operate the microphone, we use it to charge a pair of rechargeable batteries. This system creates a huge current reserve for the microphone's electronics, yet there is no maintenance involved because the microphone automatically keeps the batteries charged during use. [. . . ] Remove the batteries from the microphone and charge using a standard battery charger. IF USING ALKALINE 9 VOLT BATTERIES, DO NOT APPLY PHANTOM POWER TO THE MICROPHONE!DOING SO COULD CAUSE PERMANENT DAMAGE TO THE MICROPHONE AND VOID YOUR WARRANTY!NOTE: If you normally operate the microphone from phantom power, it is best to leave the microphone power switch in the "on" position at all times. (The microphone automatically shuts off to conserve battery power when phantom is power removed. ) Powering the Equitek E-100 Made with pride in Conneaut, Ohio U. S. A. The following instructions are only important if you plan on using the E-100 without a phantom power supply, such as for remote DAT recording. The Equitek E-100 incorporates a circuit which shuts the microphone off if phantom power is removed. This is done so that battery power will be conserved if the user forgets to turn the microphone off. If it is desired to operate the microphone using only the batteries, this feature must be disabled or the microphone will not function. This is easily done by means of a small movable configuration jumper located inside the microphone. To gain access to the inside of the microphone, remove the grille screen by removing the two top screws. Then remove the switch cover by removing the two screws in the back of the mic behind the switch cover. The jumper is labeled JP1 and is located near the center of the printed circuit board. (See diagram. ) The jumper shorts two of three available pins Auto Power Shut Off Configuration to select the proper mode. From the factory, the two pins towards the left are shorted to enable the auto shut off circuit. To disable the circuit, pull off the jumper and replace it so that the two pins towards the right are shorted. The microphone can also be used with phantom power when it is in this mode, however you must remember to turn the microphone off when not in use or the batteries will be depleted. A Special Note About Batteries The high quality rechargeable batteries used in the Equitek E-100 are Nickel Metal Hydride type. They were selected to provide long life with virtually no maintenance and have a number of properties that make them superior to most commonly available rechargeable "9 volt" batteries: 1) Higher output voltage 2) Lower self discharge rate 3) High immunity to overcharging If the E-100 is operated with a 48 volt phantom power supply it is unlikely they will ever need to be recharged, even if the microphone is unused for months. If it should ever become necessary to replace the batteries or if you simply want a spare set, we suggest that you buy replacements from us. This is not because we are trying to sell batteries, but because we want you to continue to realize the maximum performance capability of your Equitek microphone. Contact the CAD sales department to purchase replacement or additional batteries. User Techniques and Applications The Equitek E-100 has a built in swivel that allows easy microphone positioning and mates to any microphone stand that has standard 5/8" X 27 threads. Loosen the large thumb screw on the back of the mic to change the mic position. The E-100 can be used in a broad number of applications, ranging from live reinforcement to the most critical studio situations. [. . . ] (CAD) hereby warrants that this product will be free of defects in material and workmanship for a period of two years from the date of purchase. In the unlikely event a defect occurs CAD will, at its option, either repair or replace it with a new unit of equal or greater value. You should retain proof of purchase to validate the purchase date and return it with any warranty claim. Return warranty claims carefully packed, insured and prepaid to the Service Department at the address listed below. [. . . ]