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Very rare Vintage Sony C-37P FET Variable-Directivity Condenser Studio Microphone
The Sony Model C-37P FETVariable-Directivity Condenser Studio Microphone
FeaturesExcellent responseThe C-37P covers the entire frequency range with smooth frequency response and uniform directional characteristics. The use of the unique intermodulation distortion circuit in the FET preamplifier, plus wide dynamic range and remarkably low inherent noise level assure unexcelled performance.
Unique powering systemThe C-37P can be phantom powered from an external DC power supply voltage (DC 48-54 V) without any additional conductors and cables. The phantom power system is an internationally accepted standard which permits complete interchangeability of microphones, regardless of type.
Variable directivityUni- or Omni-directional characteristics are easily selected by switch.
Operating instructionsPower connectionThe C-37P can be operated from an external power supply voltage using the Sony AC-148A Power Supply or equivalent.
Directivity Select SwitchDirectivity of the C-37P may be switched from cardioid to omni-directional by setting the Directivity Select Switch (located on the rear cage) to either the U or N position with the supplied screwdriver. The U represents the uni-directional (cardioid) characteristics; the N indicates the non-directional (omni-directional) characteristics. Note: To avoid undesirable microphone output noise caused when the Directivity Select Switch is moved, reduce the microphone amplifier level or select the directivity pattern before connecting the microphone.
Function Select SwitchThe Function Select Switch has four functions: M provides flat (full range) frequency response. M1 provides slight low-frequency attenuation. V1 provides low-frequency attenuation. V2 provides severe low-frequency attenuation (roll-off). M, M1, V1, V2 can be selected to provide the best frequency response characteristics for the specific sound pickup circumstances.
Pad SwitchTo prevent overload of the impedance translator resulting from the pickup of extremely high-level sound sources, the pad switch (located on the center rear of the microphone) reduces the output level of the microphone capsule by approximately 8 dB. This allows even the highest sound levels encountered in practice to be reproduced without distortion. In general, set the switch to its 0 position. When the recording of high sound levels is necessary, set the switch to its 8 dB position. The output level of the microphone is reduced by approximately 8 dB.
Windscreen and shock mountingThe microphone grille is equipped with a windscreen which surrounds the capsule. The capsule is fully shock-mounted to eliminate the pickup of vibrations transmitted through the microphone stand.
Phantom power systemThe C-37P utilizes the standard phantom power (DC 48-54 V) system. The phantom power system consists of a DC power source, the standard two-conductor shielded microphone cable and center-tap transformer of the C-37P. The Sony AC Power Supply Model AC-148A is recommended as an optional accessory. In this form of powering, the supply current (positive potential) is fed to the center tap of the power supply transformer, and is conducted symmetrically via the A and B conductors whose original function is to carry the microphone output signal. Then, this voltage is fed to the center tap of the microphone transformer. The negative potential is sent through the shield. The phantom powering DC voltage is completely isolated from the audio signal of the microphone, and has no adverse effect on the signal. This powering system offers the following advantages.
FET preamplifier circuitThe FET circuit of the C-37P assures extremely low intermodulation and total harmonic distortion. This circuit provides superior linearity and dynamic range. Intermodulation distortion remains less than 1% at the sound pressure levels up to 154 dB-SPL1, and total harmonic distortion remains less than 1% at 1 kHz. This circuit has an equivalent inherent noise level of less than 24 dB-SPL. Accordingly, an extraordinary dynamic range of 130 dB is obtained.
All circuit components are mounted on an epoxy-tetron printed board that is completely moisture proof and is protected by a dust cover. This assures stable operation even in the most humid operating conditions.————————————–
Tested and works absolutely beautifully. Warm, luscious sound as you would expect from this timeless classic.
Excellent investment which will only increase in value. They don’t make them like this any more.
would prefer pickup or arrange your own courier.
Paypal or bank transfer only
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no warranty is given or impliedno returns
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Category: Musical Instruments:Pro Audio Equipment:Microphones
Location: Chelmsford