DIY Stereo Phono EQ amplifier (No.2) (May 16, 2020)
DIY Stereo Phono EQ amplifier (No.2) (May 16, 2020)
Specification.
- Gain: 33.5dB for MM cartridge
- Input Impedance: 47K ohm
- DC Supply Range: +-15V to +-20V
note:
operational amplifier IC: TEXAS INSTRUMENTS OPA604AP(BURR-BROWN)
using Audio grade resistors at negative feedback circuit.
Over view.
Design and parts planning.
Build on universal board.
Connection to the each parts on the board.
Insert operational amplifier IC on the IC socket.
The Phono EQ amplifier unit.
The Phono EQ amplifier unit.(bottom)
Attached cables to the phono EQ amplifier circuit board.
Testing the phono EQ amplifier.(No.2)
Power control circuit board.
Power control circuit board.(bottom)
Assembled on the plastic case.
Connect to the turntable, the control amplifier and the power amplifier.
Top: Phono EQ amplifier (No.2)
Middle: Control amplifier
Bottom: Power amplifier
If you interested in the control amplifire, refer to 'DIY Stereo Control Amplifire'.
If you interested in the power Amplifier, refer to 'DIY LM1875T STEREO Power Amplifier'.
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