Description
The Equitek E-200 from Conneaut Audio Devices is a multi-pattern side address microphone designed for recording
and broadcast applications. The implementation of high speed, low noise, low distortion electronics makes the Equitek E-200
the ideal candidate for the most critical applications.
Conneaut Audio Devices
Equitek E-200
The Equitek E-200 combines a
dual electret condenser capsule
design with advanced electronics.
Typical FET (field effect transistor) condenser 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 nonlinear.
Equitek microphones use a different approach. We do not use
any discrete FETs. Instead, we
use advanced high speed
OpAmps (Operational Amplifiers). These OpAmps are individually laser trimmed for optimum performance and have very
high gain. This allows a large
amount of negative feedback to
be used to significantly reduce
any non-linearity. 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
NiCad 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. 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.
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.
Dual cantilevered capsule shock isolators.
Remote operation without phantom power using internal batteries.
20 dB non capacitive pad
Stainless steel internal pop/EMI filter.
Automatic power shut down circuit.
Switch Functions
Power
Hi-Pass
1 = Microphone Power On
0 = Microphone Power Off (Use this switch
position for fastest charging of batteries.)
Left position = Low end roll off below 80
Hz.
Right Position = Flat low end response.
Pattern
Pad
= Omnidirectional Pattern
= Cardioid Pattern
= Figure 8 Pattern
0dB = Full gain (Highest Sensitivity)
-20dB = 20dB Gain reduction (Highest Clipping Level)
Getting Started
Although the internal NiCad batteries were charged at the factory, the batteries will gradually self-discharge if the
microphone has been in storage for quite a while. It may be necessary to charge the batteries before initial use. Please see the
section below on powering the Equitek E-200.
Caution!
The high gain and wide bandwidth of the E-200 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 E-200 microphone.
Powering the Equitek E-200
The Equitek E-200 is powered by a combination of 48 Volt phantom power and a pair of rechargeable 9 volt NiCad
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 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. (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. Before initial use, the batteries 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 NiCad 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!
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. Two disable the circuit, pull off the jumper and replace it so that
the two pins towards the M (For manual mode) are shorted. The microphone can 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.
Made with pride in Conneaut,
Ohio U.S.A.
User Techniques and Applications
The Equitek E-200 can be used in a broad number of applications, ranging from live reinforcement to the most critical studio situations. The E-200 is ideal for vocals and
voice overs, yet it also excels at some of the most demanding instrumental projects. The E-200 is great for virtually all acoustic, wind, and amplified instruments. It will even
handle the explosive dynamics of drum kits with ease. The E-200 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.
Specifications
Type:
Frequency Response:
Polar Patterns:
Impedance:
Output Level At 1 kHz.:
Dynamic Range:
Equivalent Noise Level:
Maximum Output Level:
Maximum SPL:
Total Harmonic Distortion:
Signal-To-Noise Ratio:
Capsule Capacitance:
Powering:
Connector:
Finish:
Dimensions:
Net Weight:
Side Address, Dual Capsule Electret Condenser
10-18 kHz (See Back Cover)
Cardioid, Figure eight, Omnidirectional (See Back Cover)
Low (200 ohms nominal).
Power Level:
-34 dB (0 dB = 1 mW per 10 microbars).
Open Circuit Voltage:
-55 dB (0 dB = 1 volt per microbar).
17.8 mV/Pascal.
132 dB.
16 dB Equivalent SPL, A weighted
With pad, .89 dBV
Without pad, 8.9 dBV
148 dB SPL (With pad on)
Less than 0.15%
78 dB (At 94 dB SPL)
60 pF
Minimum Requirements are 48 - 52 Volts Phantom Power capable of
delivering at least 8 mA. or CAD EPS-1 high current 24 volt supply.
Three pin male XLR type.
Durable black urethane. Brass plated front screen.
2.5" (63.5 mm) Dia., x 9.312" (236.5 mm) High
29.3 oz. (830 grams)
Included Accessories:
SM-1 ....... Swivel Mount
Optional Accessories:
ZM-1....... Shock Mount (See cover photo)
EPS-1 ...... High Current Phantom Power Supply
WS-1 ....... Foam Windscreen
40-350 .... 50 ft. broadcast quality extension cable terminated with
40-351 .... 100 ft. broadcast quality extension cable
40-352 .... 25 ft. broadcast quality extension cable
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.
warranties or merchantability or fitness for a particular purpose are hereby disclaimed and CAD hereby disclaims liability for incidental, special or consequential damages
resulting from the use or unavailability of this product.
incidental or consequential damages or limitations on how long an implied warranty lasts, so the above exclusions and limitations may not apply to you.
professional 3 pin male/female connectors
Shown with included SM-1 swivel mount.
TWO-YEAR LIMITED WARRANTY
CTI Audio, Inc. (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
This warranty excludes exterior finish or appearance, damage from abuse, misuse of the product, use contrary to CADs instructions or unauthorized repair. All implied
This warranty gives you specific legal rights and you may also have other rights which vary from state to state. Some states do not allow the exclusion or limitation of
Note: No other warranty, written or oral is authorized by CTI Audio, Inc.
Cardioid
Figure 8
Equitek E-200 Frequency and Polar Response
Omnidirectional
Equitek E-200 Schematic
A Division of CTI Audio, Inc. * 341 Harbor St. * Conneaut, OH 44030 * (216) 593-1111 * Fax (216) 593-5395
R97L07E05
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