User manual CAD AUDIO E-200

[. . . ] 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. The use of OpAmps is not the only unique feature of Equitek microphones. For example, we also employ servo circuitry to minimize dc offset and eliminate interstage coupling capacitors. The bottom line is we believe you will find the Equitek E-200 to have a remarkably open and clean sound that will enhance any project. Bob Eaton Senior Microphone Engineer The Equitek E-200 incorporates a number of unique features including: Servoed head amplifiers. [. . . ] Standard 9 volt alkaline batteries can also be used if extended operation is needed when no phantom power is available. * (Auto power shut off circuit must be disabled for battery operation without phantom power. ) The minimum requirement for the phantom supply is a regulated 48 volts with the capability of supplying at least 8 mA. (Or the CAD EPS-1 high current 24 volt supply. ) Supplies that do not meet this requirement will not allow continuous operation of the microphone. The high quality NiCad batteries used in the Equitek E-200 have a higher output voltage than most normal 9 volt NiCad batteries. These batteries require the same care as any other type of rechargeable battery. Once the batteries have received this initial charge, they should not need to be charged in this manner again, unless the microphone is unused for a long time. The batteries can be charged by two different means: Connect the microphone to a phantom supply and allow the batteries to charge 12 - 14 hours with the mic turned off. Remove the batteries from the microphone and charge using a standard NiCad 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! Auto Power Shut Off Configuration The Equitek E-200 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 XLR end cap by first removing the two screws. Then, loosen the screw on the back of the microphone and slide off the microphone housing. The jumper is labeled JP1 and is located next to the battery holder on the side of the card opposite the XLR connector. The jumper shorts two of three available pins to select the proper mode. From the factory, the two pins towards the A are shorted to enable the auto shut off circuit. [. . . ] (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 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. [. . . ]