Three Band Tone Control

FEATURES

1. Support 3 bands (bass, mid and treble frequency) tone control for stereo channel. Frequency range is turnable by three variable resistors.
2. Use of very low distortion high quality audio opamp TDA2320A, 0.03% at f=1kHz typical 3. High power rejection ratio: 80dB and channels isolation: 100dB
4. Symmetric PCB design for both R and L channels.
5. Implemented with WIMA, nichicon capacitors and Dale resistors.
6. High quality PCB, blue solder mask, double layer, 2.4mm thickness, 2oz copper.
7. Required power supply: +/-15V DC
8. Dimension: 141mm x 56.4mm

ASSEMBLY GUIDE

1. Solder all the components according to the part list which can be downloaded from this forum.
2. Unplugged the ICs before applying +15V and -15V DC supply.
3. Plug back the ICs if there is no abnormal large current drawing from the supply.

TEST RESULTS
Yellow trace show the input signal
Blue trace show the output signal
Attenuation for frequency at 100Hz, 1kHz, and 10kHz





Yellow trace show the input signal
Blue trace show the output signal

Gainfor frequency at 100Hz, 1kHz, and 10kHz