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Professional
studio vacuum tube microphone do-it-yourself
kit!
This kit includes
everything you need to build a professional large diaphragm vacuum
tube condenser
microphone.
Use
the included components for an excellent sounding tube microphone.
Or for those more adventurous DIYers, swap out components and
create your own custom high-end tube microphone.
There
is already a large following for these kits and many
builders have created their own modifications to mimic
classic vacuum tube microphones that can cost 10x's the
price.
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Professional
studio FET microphone do-it-yourself
kit!
Brought
to you by popular demand! The first ever DIY Large Diaphragm
FET studio condenser microphone kit.
Use
the included components for an excellent sounding FET studio
condenser microphone.
Or for those more adventurous DIYers, swap out components and
create your own custom mic.
This
kit includes a widely used 1 inch large diaphragm capsule
and the industry standard SK170 FET. As bonus features this
kit also includes a 100Hz roll-off swtich and circuit and a
-6dB Pad switch and circuit. Once complete this will be a
highly versatile studio microphone for many recording
applications.
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Kit Includes
Beautifully machined (unpainted) brass microphone body and head-grill assembly
Internal mounting cage assembly to mount circuit board, capsule, transformer and connector
housings.
Components included
1 - 32mm/1in large diaphragm pressure gradient capsule (assembled)
A550MP comes with 1 - 32mm/1in large dual-diaphragm multi-polar pattern capsule (assembled)
1 - Plastic capsule mount
1 - Pre-amp circuit PCB
1 - Tube socket PCB
1 - Vacuum tube, 12AX7
1 - 9-pin tube socket
1 - 7-pin XLR male connector
2 - Ceramic insulators for both ends of C4
1 - Film Resistor, 1/2 W 10KΩ
1 - Film Resistor, 2W 100KΩ
2 - Film Resistor, 1/2 W 270KΩ
2 - Resistor, 51M
1 - Resistor, 200M
1 - Film Resistor, RJ 1/2 W 3KΩ
1 - Resistor, 1 KM
3 - Capacitor, 1μ/400V
2 - Capacitor, .022μ/630V
1 - Capacitor, 1000 pF/630V
1 - Capacitor, 100μ/25V
3 - Capacitor, 0.1μ/63V
1 - Capacitor, 1000μ/10V
1 - Ceramic Capacitor, 2pF
1 - Transformer, turns ratio 10:1
1 - Fully assembled power supply (A5500MP comes with 9-step
selectable PSU)
1 - Power cable for power supply
1 - 7-pin microphone cable
Printed documents
Schematic
circuit board layouts |
Kit Includes
Beautifully machined (unpainted) brass microphone body and head-grill assembly
Internal mounting cage assembly to mount circuit board, capsule, transformer and connector
housings.
Components included
1 - 32mm/1in large diaphragm pressure gradient capsule (assembled)
1 - Plastic capsule mount
2 - circuit PCBs
1 - 3-pin XLR male connector
R1 Resistor 1/4W 6.8K
R2 Resistor 1/4W 560
R3 Resistor 1/4W 1M
R4 Resistor 1KM
R5 Resistor 1KM
R6 Resistor 1/4W 2K-3.9k
R7 Resistor 1/4W 1.8K
R8 Resistor 1/4W 20K
R9 Resistor 1/4W 180K
R10 Resistor 1/4W 7.5K
R11 Resistor 1/4W 2.2K
R12 Resistor 1/4W 2.2K
R13 Resistor 1/4W 47
R14 Resistor 1/4W 47
R15 Resistor 1/4W 150K
R16 Resistor 1/4W 150K
R17 Resistor 1/4W 330K
R18 Resistor 1/4W 4.7K
C1 Capacitor CBB 0.01μ
C2 Capacitor NPO 1000P
C3 Capacitor NPO 220P
C4 Capacitor CA42 22μF/16V
C5 Capacitor 0.47μ
C6 Capacitor CBB 0.047μ
C7 Capacitor CBB 6800P
C8 Capacitor CA42 4.7μF/35V
C9
C10 Capacitor 330P
C11 Capacitor 330P
C12 Capacitor CA42 6.8Vμ/40V
C13 Capacitor CA42 2.2Vμ/50V
C14 Capacitor CA42 2.2Vμ/50V
CF Capacitor CC1-150p
D1 FET 2SK170
D2 Transistor 1015
L1 Inductor 47μH
L2 Inductor 47μH
Transformer, turns ratio 10:1
Printed documents
Schematic
circuit board layouts |
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Approximate
Specifications after assembly:
Type: large dual diaphragm
pressure gradient condenser
Frequency response: 20Hz to 20 kHz
Polar Pattern: cardioid
Sensitivity: 14mV/Pa (@1kHz, 74dB SPL)
Output impedance: <200 ohms
Equivalent noise level: <17dB-A Max. SPL (@0,5%): 130dB |
Approximate
Specifications after assembly:
Type: Large Diaphragm Pressure Gradient True Condenser
Frequency Response: 20 Hz to 20 kHz
Polar Pattern: Cardioid
Sensitivity: 16mV/Pa -40±2dB (0 dB=1V/Pa 1000Hz)
Output Impedance: <200 ohm
Equivalent Noise Level: <20dB,
A weighted Max SPL: <0.5% at 135 dB SPL
Special Feature: -6dB PAD and 100Hz Roll-off
Power Requirement: +48v Phantom Power
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