CAD Equitek E100-2 User Manual

Auto Power Shut Off Configuration

The following instructions are only important if you plan on

using the e100

2

 without a phantom power supply, such as for remote

DAT recording. The Equitek e100

2

 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 battery cover of the

microphone.  To gain access to the configuration jumper, remove the

single allen head screw near the bottom of the microphone on the

back side using the supplied 2.5mm allen wrench. Then remove the

battery cover and batteries for access to the configuration jumper. If

you do not plan to use the microphone without phantom power, it is

recommended that the configuration jumper remain in its default ON position.

ON

OFF

AUTO SHUT-OFF

AUTO SHUT-OFF

OFF

ON

A Special Note About Batteries

The high quality rechargeable batteries used in the Equitek e100

2

 are Nickel Metal Hydride, or Nickle Cadmium 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 e100

2

 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,

Use only high quality Nickel Metal Hydride, or Nickle Cadmium type batteries.

Mic Cable Removal

When using the included suspension mount, the microphone cable can be easily

removed by gripping the mic firmly in one hand, while pressing on the back of the

suspension mount with the thumb of your other hand, This will press the unlock button on

you mic cable which will allow the cable to be removed. Note the illustration to the left.

Optional Accessories:

EPF-15 .....

P-pop filter mounted on 15" gooseneck with standard bracket

40-350 ....... 50 ft. broadcast quality extension cable terminated with professional 3 pin

male/female connectors.

40-351 ....... 100 ft. broadcast quality extension cable.

40-352 ....... 25 ft. broadcast quality extension cable.

User Techniques and Applications

The Equitek e100

2

 includes a suspension shock mount which greatly reduces handling noise. It also has an optional

swivel mount adaptor that can be used when the suspension mount isn’t practical. Both mounting adaptors allow for easy

microphone positioning and mates to any microphone stand that has standard 5/8" X 27 threads. A thread adaptor is included for

the smaller threaded mic

stands. To remove the microphone and switch to the microphone stand adaptor, loosen the large

thumb screw on the back of the mic. The e100

2

 can be used in a broad number of applications,

ranging from live reinforcement to the most critical studio situations.  The e100

2

 is ideal for

vocals and voice overs, yet it also excels at some of the most demanding instrumental

projects.  The e100

2

 is great for virtually all acoustic, wind, and amplified instruments.

One of the most popular uses for the e100

2

 is in miking drum sets, especially kick drums.

The e100

2

 has been proven to be outstanding in all of these applications and more.  Its

uncolored sonic characteristics allow you to decide how a instrument or vocal will

sound in the mix. The supercardoid polar pattern is very useful in live applications

where feedback control and tight miking are required.

ON = Microphone Power On

OFF = Microphone Power Off  (Use this position switch position for fastest

charging of batteries. See below.)

Power

Pad

Hi-Pass

Left position = Low end roll off below 80 Hz.

Right Position = Flat low end response

0dB = Full gain (Highest Sensitivity)

-20dB = 20dB Gain reduction (Highest Clipping Level)

Switch Functions

The Equitek e100

2

 combines

an electret condenser cap-

sule design with advanced

electronics. Typical FET

(field effect transistor) con-

denser microphones use

discrete designs. This

means they use individual

transistors that must be

carefully matched for proper

characteristics. Even with

careful matching, discrete

designs are inherently non-

linear. Equitek microphones

use a different approach.

We do not use any discrete

FETs.  Instead, we use ad-

vanced high speed OpAmps

(Operational Amplifiers).

These OpAmps are individu-

ally laser trimmed for opti-

mum performance and have

very high gain.  This allows

a large amount of negative

feedback to be used to sig-

nificantly reduce any non-

linearity.  During transients,

these OpAmps may require

more current than typical

phantom power supplies

can deliver.  The extra cur-

rent demands are accommo-

dated by our unique power

supply design.  Instead of

using phantom power to op-

erate the microphone, we

use it to charge a pair of re-

chargeable batteries.  This

system creates a huge cur-

rent reserve for the

microphone's electronics,

yet there is no maintenance

involved because the micro-

phone automatically keeps

the batteries charged during

use.  The use of OpAmps is

not the only unique feature

of Equitek microphones.

For example, we also em-

ploy servo circuitry to mini-

mize DC offset and eliminate

interstage coupling capaci-

tors.  The bottom line is we

believe you will find the

Equitek e100

2

 to have a re-

markably open and clean

sound that will enhance any

project.

Professional Microphones

e100

2

Description

The Equitek e100

2

 from CAD is a single pattern supercardioid side address

microphone designed for recording, broadcast and live applications.  The implementation

of high speed, low noise, low distortion electronics makes the Equitek e100

2

 the ideal

candidate for the most critical applications.

The Equitek e100

2

 incorporates a number of unique features including:

• Servo head amplifiers.

• High SPL Capability (148 dB SPL with pad).

• Transformerless balanced output circuits.

• Internal Power reservoir system that can supply ten times the current

        available from phantom powering alone.

• Triple point internal shock isolation system..

• Remote operation without phantom power using internal batteries.

• 20 dB non capacitive pad.

• Stainless steel internal pop/EMI filter.

• Automatic power shut down circuit.

Getting Started

The e100

2

 requires 48 volt phantom power and the internal batteries must be

charged for proper operation. Although the internal batteries were charged at the factory,

the batteries will gradually self-discharge if the microphone has been in storage for a long

time. It may be necessary to charge the batteries before initial use. Please see the section

below on powering the Equitek e100

2

.

Caution!

The high gain and wide bandwidth of the e100

2

 microphone will easily overload

the inputs of many professional mixing consoles if adequate precautions are not taken.

This is especially true if the mic is going to be used on percussion or amplified electronic

instruments.  If you have never used this microphone before, we strongly recommend that

you initially reduce the system gain by doing one or more of the following:

• Enable the pad switch on the input of your mixing console.

• Start with the input trim control on your mixing console turned down to a low

level.

• Enable the -20 dB pad switch on the e100

2

 microphone.

Powering the Equitek E-100

2

The Equitek e100

2

 is powered by a combination of 48 volt phantom power and a

pair of rechargeable 9 volt batteries.  This powering arrangement overcomes the inherent

current limiting associated with most phantom power supplies.  The batteries are trickle

charged by the phantom supply.  When needed, the batteries provide the extra current

necessary during high SPL transients.  The microphone will not function properly without

the batteries present.  The microphone can be used without phantom power for periods of

up to 6 hours provided the batteries are fully charged.  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. of current.  Supplies that do not meet this

requirement will not allow continuous operation of the microphone.  Before initial use, the

batteries may  need to be fully charged. 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 battery

charger.

   * See the section on Auto Power Shut Off.

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 power is removed.)