T3
The T3 is a high quality pressure gradient condenser microphone with
a circuit designed around a selected 12AY7 (6072) dual triode with a
transformer balanced output. The capsule is a 1.06” (27mm) Braunmuhl
Weber based, center terminated, dual membrane design. Power to
the microphone is derived from a proprietary power supply (PS3). It is
from the power supply that the polar patterns of the mic are controlled.
Available patterns are omni directional, wide cardioid, cardioid, hyper-
cardiod and figure of 8. The T3’s response is quite linear with a slight
rise in frequency response around 5kHz to 12 kHz. Signals originating
from the side and rear of the mic are reproduced accurately and with
little phase coloration.
The T3 vacuum tube microphone is supplied with a shock mount, vari-
able pattern power supply, dedicated 7pin XLR cable, windscreen and
heavy duty road case with locking latches.
T3 SPECIFICATIONS
Type: Large dual diaphragm
vacuum tube microphone.
Polar pattern: cardioid/ omni directional
/figure 8
and 6 intermediate stages.
Frequency response: 20Hz~20000Hz.
Sensitivity: 14mV/Pa=-37 dB (0dB=1V/Pa).
Output impedance: <250 Ohm.
Load impedance: >1000 Ohm.
Max. SPL: 125dB SPL for 1% THD
@1000Hz (0 dB SPL=0.00002Pa).
Noise: (Line) ---28 dB (A weighted)---18 dB-A.
S/N ratio: 76 dB.
Power requirement: Supplied Power Supply (SPT3) 110/220
Current: 200V DC high voltage, <1.5mA
Filament: 6.3V DC, <370mA.
Connector: Gold-plated 7-pin XLR
Diameter: 2.1” length: 8.9”
Weight: 26.9oz
76
C3
The C3 is a high quality externally polarized pressure gradient micro-
phone with a low-noise, discrete, FET impedance converter driving a
balanced class-A output stage. It has three selectable polar patterns,
cardioid, omni, and figure of eight. Like the C1, the C3 has a 3-posi-
tion switch which alternately enables a -10dB pad, a high pass filter at
150Hz, or none of the above. The C3 employs a 1.06” (27mm) 6 um
capsule for natural reproduction of sound. The hallmark features of this
combination are that of low noise and wide dynamic range.
The C3 is supplied with a shock mount, windscreen and heavy duty road
case with locking latches.
C3 SPECIFICATIONS
Type: 1 inch large dual diaphragm FET
condenser microphone.
Polar pattern: cardioid/omni directional/figure of 8.
Frequency response: 30Hz~20000Hz.
Sensitivity: 12mV/Pa=-38dB (0dB=1V/Pa).
Output impedance: <200 Ohm.
Load impedance: >1000 Ohm.
Max. SPL: 132/142dB SPL for 1% THD @1000Hz
(0 dB/-10 dB pad, 0 dB SPL=0.00002Pa).
Noise: (Line) ---28 dB (A weighted)---18 dB.
S/N ratio: 76 dB.
Power requirement: 48 +/- 4V.
Current consumption: <2.5mA.
Circuit: transformerless circuit, featuring extremely
low self noise and large dynamic range.
Connector: Gold-plated 3-pin XLR.
Pad: 10 dB
Low cut: 6 dB/Octave at 150 Hz.
Diameter: 2.1” length: 8.9”
Weight: 26.9oz
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